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CAT4016
16-Channel Constant Current LED Driver
FEATURES
16 Constant current-sink channels Serial interface up to 25MHz clock frequency 3V to 5.5V logic supply LED current range from 2mA to 100mA LED current set by external RSET resistor 300mV LED dropout at 30mA Thermal shutdown protection Available in RoHS-compliant 24-lead SOIC, TSSOP, QSOP, and 4 x 4mm TQFN packages
DESCRIPTION
The CAT4016 is a 16 channel constant current driver for LED billboard and other general display applications. LED channel currents are programmed together via an external RSET resistor. Low output voltage operation on the LED channels as low as 0.4V (for 2 to 100mA LED current) allows for more power efficient designs. A high-speed 4-wire serial interface of up to 25MHz clock frequency controls each individual channel using a shift register and latch configuration. A serial output data pin (SOUT) allows multiple devices to be cascaded and programmed via one serial interface. The device also includes a blanking control pin (BLANK) that can be used to disable all channels independently of the interface. Thermal shutdown protection is incorporated in the device to disable the LED outputs if the die temperature exceeds a set limit. The device is available in the 24-lead SOIC, TSSOP, QSOP and the compact TQFN 4 x 4mm packages.
APPLICATION
Billboard Display Marquee Display Instrument Display General Purpose Display
For Ordering Information details, see page 14.
TYPICAL APPLICATION CIRCUIT
VIN 3V to 5.5V 1F VDD LED1 LED2 LED16 20mA
CONTROLLER
BLANK LATCH SIN CLK GND
CAT4016
SOUT RSET
to next device
3k
(c) 2008 SCILLC. All rights reserved. Characteristics subject to change without notice.
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Doc. No. MD-5028 Rev. D
CAT4016
ORDERING INFORMATION
Part Number CAT4016W-T1 CAT4016Y-T2 CAT4016VS-T2 CAT4016VSR-T2 CAT4016HV6-T2 CAT4016HV6-GT2 Package SOIC24
(1) (1)
Quantity per Reel 1,000 2,000 2,000 2,000 2,000 2,000
Package Marking CAT4016W CAT4016Y 4016VS 4016VSR LAAA LAAD
TSSOP24 QSOP24 QSOP24 TQFN24 TQFN24
(1) (1)
(1) (2)
Notes: (1) Matte-Tin Plated Finish (RoHS-compliant) (2) NiPdAu Plated Finish (RoHS-compliant)
PIN CONFIGURATION
24-Lead SOIC (W), TSSOP (Y), QSOP (VS)
GND SIN CLK LATCH LED1 LED2 LED3 LED4 LED5 LED6 LED7 LED8
1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13
24-Lead QSOP (VSR)
LED15 LED16 BLANK SOUT RSET VDD GND SIN CLK LATCH LED1 LED2
1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13
VDD RSET SOUT BLANK LED16 LED15 LED14 LED13 LED12 LED11 LED10 LED9
LED14 LED13 LED12 LED11 LED10 LED9 LED8 LED7 LED6 LED5 LED4 LED3
24-Lead TQFN (HV6)
BLANK LED16 LED15 SOUT RSET
23
24 GND SIN CLK LATCH LED1 LED2 1 2 3 4 5 6 7
VDD LED3
22
21
20
19 18 LED14 17 LED13 16 LED12 15 LED11 14 LED10 13 LED9
8
9
10
11
12
LED7
LED8
LED4
LED5
LED6
Doc. No. MD-5028 Rev. D
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(c) 2008 SCILLC. All rights reserved. Characteristics subject to change without notice.
CAT4016
ABSOLUTE MAXIMUM RATINGS
Parameter VDD Supply Voltage Logic input/output voltage (SIN, SOUT, CLK, BLANK, LATCH) LEDn voltage DC output current on LED1 to LED16 Storage Temperature Range Junction Temperature Range Lead Soldering Temperature (10sec.) Rating 6 -0.3V to VDD+0.3V 6 150 -55 to +160 -40 to +150 300 Units V V V mA C C C
RECOMMENDED OPERATING CONDITIONS
Parameter VDD Voltage applied to LED1 to LED16 LED current RSET control range Ambient Temperature Range Range 3.0 to 5.5 0.4 to 5.5 up to 100 -40 to +85 Units V V mA C
ELECTRICAL OPERATING CHARACTERISTICS
DC Characteristics VDD = 5.0V, TAMB = 25 C, over recommended operating conditions unless specified otherwise. Symbol
ILED-ACC
Name
LED Current (any channel)
Conditions
VLED = 1V, RSET = 3k VLED = 1V, RSET = 1.5k VLED = 1V, RSET = 750 VLED = 1V, RSET = 3k VLED = 1V, RSET = 1.5k VLED = 1V, RSET = 750 VDD within 4.5V and 5.5V LED current 30mA VLED within 1V and 3V LED current 30mA RSET = 3k RSET = 750 RSET = 3k RSET = 750 VLED = 5V, outputs off
Min
18 36
Typ
20 40 80 1.5 1.5 2.0 0.1 0.05 3 8.5 4 10
Max
22 44
Units
mA
ILED-MAT IVDD IVLED IDDOFF IDDON ILKG RLATCH RBLANK VIH VIL VHYS IIL VOH VOL VRSET TSD THYST
LED Current Matching (ILED - ILEDAVR) / ILEDAVR LED current regulation vs. VDD LED current regulation vs. VLED Supply Current (all outputs off) Supply Current (all outputs on) LEDn output Leakage LATCH Pull-down Resistance BLANK Pull-up Resistance Logic high input voltage Logic low input voltage Logic input hysteresis voltage Logic Input leakage current (CLK, SIN) SOUT logic high output voltage SOUT logic low output voltage RSET Regulated Voltage Thermal Shutdown Thermal Hysteresis
-6.0
+6.0
% %/V %/V
8 9 1 300 300 0.3xVDD
mA mA mA mA A k k V V V
-1 100 100 0.7xVDD
180 180
0.1xVDD VI = VDD or GND IOH = -1mA IOL = 1mA -5 VCC-0.3V 1.17 1.20 160 20 0 5 0.3 1.23
A V V C C
(c) 2008 SCILLC. All rights reserved. Characteristics subject to change without notice.
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Doc. No. MD-5028 Rev. D
CAT4016
Timing Characteristics For 3.0V VDD 5.5V, TAMB = 25 C, unless specified otherwise. Symbol CLK fclk tcwh tcwl SIN tssu tsh LATCH tlwh Tlh Tlsu LEDn tld tls tlst tbd tlr tlf SOUT tor tof tod SOUT rise time (10% to 90%) SOUT fall time (90% to 10%) Propagation delay time SOUT CL = 15pF CL = 15pF CLK to SOUT 8 5 5 15 25 ns ns ns LED1 Propagation delay LED Propagation delay stagger LED Propagation delay stagger total BLANK Propagation delay LED rise time (10% to 90%) LED fall time (90% to 10%) LATCH to LED1 off/on LED(n) to LED(n+1) LED1 to LED16 BLANK to LED(n) off/on Pull-up resistor = 50 to 3.0V Pull-up resistor = 50 to 3.0V 40 17 250 60 40 30 300 200 250 300 40 ns ns ns ns ns ns LATCH Pulse width Hold time LATCH to CLK Setup time LATCH to CLK Channel Stagger Delay 20 4 800 ns ns ns Setup time SIN to CLK Hold time SIN to CLK 4 4 ns ns CLK Clock Frequency CLK Pulse Width High CLK Pulse Width Low 20 20 25 MHz ns ns Name Conditions Min (1) Typ (2) Max (1) Units
Test Circuit for AC Characteristics
VDD
1F
VDD LED1
Rp
50
CONTROLLER
BLANK LATCH SIN CLK RSET RSET GND SOUT Cl 15pF
CAT4016
LED16
Rp
50 V1 3V
Notes: (1) All min and max values are guaranteed by design. (2) VDD = 5V, LED current 30mA.
Doc. No. MD-5028 Rev. D
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(c) 2008 SCILLC. All rights reserved. Characteristics subject to change without notice.
CAT4016
1/fclk CLK tssu SIN tod SOUT tlh LATCH tlwh tlsu tsh tcwl tcwh
Figure 1. Serial Input Timing Diagram
tld LATCH tbd BLANK tls LED1
LED2 tlst = 15 tls LED16
Figure 2. LED Output Timing Diagram
(c) 2008 SCILLC. All rights reserved. Characteristics subject to change without notice.
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Doc. No. MD-5028 Rev. D
CAT4016
TYPICAL PERFORMANCE CHARACTERISTICS VDD = 5.0V, LED current 30mA, all LEDs On, TAMB = 25C unless otherwise specified. LED Current vs. LED Pin Voltage
70 LED CURRENT [mA] 60 50 40 30 20 10 0 0.0 0.3 0.6 0.9 LED PIN [V] 1.2 1.5
SUPPLY CURRENT [mA]
Supply Current vs. VDD Pin Voltage
6.0
All LED's ON
5.5 5.0 4.5 4.0 3.5
All LED's OFF
3.0 3.0 3.5 4.0 4.5 VDD [V] 5.0 5.5
LED Current vs. VDD Pin Voltage
31.5
Supply Current vs. RSET Current
12 SUPPLY CURRENT [mA]
All LED's ON
31.0 LED CURRENT [mA] 30.5 30.0 29.5 29.0 28.5 3.0 3.5 4.0 4.5 VDD [V] 5.0 5.5
10 8 6 4
All LED's OFF
2 0 0.0 0.5 1.0 1.5 RSET CURRENT [mA] 2.0
RSET Voltage vs. VDD Pin Voltage
1.30
LED Current vs. RSET Resistor
100 LED CURRENT [mA] 80 60 40 20 0 0.1 1.0 10.0 RSET [k] 100.0
RSET PIN [V]
1.25 1.20
1.15 1.10 3.0 3.5 4.0 4.5 VDD [V] 5.0 5.5
Doc. No. MD-5028 Rev. D
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(c) 2008 SCILLC. All rights reserved. Characteristics subject to change without notice.
CAT4016
TYPICAL PERFORMANCE CHARACTERISTICS VDD = 5.0V, LED current 30mA, all LEDs On, TAMB = 25C unless otherwise specified. RSET Voltage vs. Temperature
1.30
LED Current vs. Temperature
31.5 31.0 LED CURRENT [mA]
1.25 RSET PIN [V]
30.5 30.0 29.5 29.0 28.5
1.20
1.15
1.10 -50 0 50 100 TEMPERATURE [C] 150
-50
0 50 100 TEMPERATURE [C]
150
Internal Pull-Down Current (LATCH pin)
30 PULL-DOWN CURRENT [A] .
Internal Pull-Up Current (BLANK pin)
30 PULL-UP CURRENT [A] . 25 20 15 10 5 0
25 20 15 10 5 0 0 1 2 3 4 LATCH VOLTAGE [V] 5
0
1 2 3 4 BLANK VOLTAGE [V]
5
PWM Dimming on BLANK pin (f = 10kHz)
100 80 DUTY CYCLE [%] 60 40 20 0 0 5 10 15 20 25 LED CURRENT [mA] 30
BLANK Transient Response
(c) 2008 SCILLC. All rights reserved. Characteristics subject to change without notice.
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Doc. No. MD-5028 Rev. D
CAT4016
PIN DESCRIPTION
Name GND SIN CLK LATCH LED1-LED16 BLANK SOUT RSET VDD TAB (TQFN package only) Function Ground Serial data input pin Serial clock input pin Latch serial data to output registers LED channel 1 to 16 cathode terminals Enable / disable all channels Serial data output pin. LED current set pin Positive supply Voltage Connect to GND on the PCB
PIN FUNCTION
GND is the ground reference pin for the device. This pin must be connected to the ground plane on the PCB. SIN is the serial data input. Data is loaded into the internal register on each rising edge of CLK. CLK is the serial clock input. On each rising CLK edge, data is transferred from SIN to the internal 16bit serial shift register. LATCH is the latch data input. On the rising edge of LATCH, data is loaded from the 16-bit serial shift register into the output register latch. On the falling edge, this data is latched in the output register and isolated from the state of the serial shift register. LED1 - LED16 are the LED current sink channels. These pins are connected to the LED cathodes. The current sinks drive the LEDs with a current equal to 50 times RSET pin current. For the LED sink to operate correctly, the voltage on the LED pin must be above 0.4V. BLANK is the LED channel enable and disable input pin. When low, LEDs are enabled according to the output latch register content. When high, all LEDs are off, while preserving the data in the output latch register. SOUT is the serial data output of the 16-bit serial shift register. This pin is used to cascade several devices on the serial bus. The SOUT pin is then connected to the SIN input of the next device on the serial bus to cascade. RSET is the LED current setting pin. A resistor is connected between this pin and ground. Each LED channel current is set to 50 times the current pulled out of the pin. The RSET pin voltage is regulated to 1.2V. VDD is the positive supply pin voltage for the entire device. A small 1F ceramic is recommended close to pin.
Doc. No. MD-5028 Rev. D
8
(c) 2008 SCILLC. All rights reserved. Characteristics subject to change without notice.
CAT4016
BLOCK DIAGRAM
LED1 LED2 LED3 VDD VIN
+
LED16 + Current Setting 1.2V Ref GND RSET
CURRENT SINKS
BLANK
LATCH
L1
L2
L3
LATCHES
L16
SIN CLK
S1
S2
S3
SHIFT REGISTER
S16
SOUT
Figure 2. CAT4016 Functional Block Diagram
BASIC OPERATION
The CAT4016 uses 16 tightly matched current sinks to accurately regulate the LED current in each channel. The external resistor, RSET, is used to set the LED channel current to 50 times the current in RSET.
1.2 LED current = 50 x R SET
Pull-up and pull-down resistors are internally provided to set the state of the BLANK and LATCH pins to the off-state when not externally driven. SERIAL INTERFACE A high-speed serial 4-wire interface is provided to program the state of each LED on or off. The interface contains a 16-bit serial to parallel shift register (S1-S16) and a 16-bit latch (L1-L16). Programming the serial to parallel register is accomplished via SIN and CLK input pins. On each rising edge of the CLK signal, the data from SIN is moved through the shift register serially. Data is also moved out of SOUT which can be connected to a next device if programming more then one device on the same interface. On the rising edge of LATCH, the data contents of the serial to parallel shift register is reflected in the latches. On the falling edge of LATCH, the state of the serial to parallel register at that particular time is saved in the latches and does not change irrespective of the contents of the serial to parallel register. BLANK is used to disable all LEDs (turn off) simultaneously while maintaining the same data in the latch register. When low, the LED outputs reflect the data in the latches. When high, all outputs are high impedance (zero current).
Tight current regulation for all channels is possible over a wide range of input and LED voltages due to independent current sensing circuitry on each channel. The LED channels have a maximum dropout of 0.4V for most current and supply voltage conditions. This helps improve the heat dissipation and efficiency of the LED driver. Upon power-up, an under-voltage lockout circuit clears all latches and shift registers and sets all outputs to off. Once the under-voltage lockout threshold has been reached the device can be programmed. The driver delays the activation of each consecutive LED output channel by 17ns (typical). Relative to LED1, LED2 is delayed by 17ns, LED3 by 34ns and LED16 by 250ns typical. The delay is introduced when LATCH is activated. The delay minimizes the inrush current on the LED supply by staggering the turn on and off current spikes over a period of time and therefore allowing usage of smaller bypass capacitors.
(c) 2008 SCILLC. All rights reserved. Characteristics subject to change without notice.
9
Doc. No. MD-5028 Rev. D
CAT4016
PACKAGE OUTLINE DRAWINGS
SOIC 24-Lead 300mils (W) (1)
SYMBOL
MIN
NOM
MAX
A A1 A2 b
E1 E
2.35 0.10 2.05 0.31 0.20 15.20 10.11 7.34 1.27 BSC 0.25 0.40 0 5
2.65 0.30 2.55 0.51 0.33 15.40 10.51 7.60 0.75 1.27 8 15
c D E E1 e h
b PIN#1 IDENTIFICATION
e
L 1
TOP VIEW
D
h
h
1
A
A2
1
A1 SIDE VIEW
L END VIEW
c
For current Tape and Reel information, download the PDF file from: http://www.catsemi.com/documents/tapeandreel.pdf.
Notes: (1) All dimensions are in millimeters. Angles in degrees. (2) Complies with JEDEC MS-013.
Doc. No. MD-5028 Rev. D
10
(c) 2008 SCILLC. All rights reserved. Characteristics subject to change without notice.
CAT4016
TSSOP 24-Lead 4.4mm (Y) (1)
b
SYMBOL
MIN
NOM
MAX
A A1 A2 b
E1 E
1.20 0.05 0.80 0.19 0.09 7.70 6.25 4.30 7.80 6.40 4.40 0.65 BSC 1.00 REF 0.50 0 0.60 0.70 8 0.15 1.05 0.30 0.20 7.90 6.55 4.50
c D E E1 e L L1 1
e TOP VIEW
D c A2 A 1 L1 L SIDE VIEW END VIEW
A1
For current Tape and Reel information, download the PDF file from: http://www.catsemi.com/documents/tapeandreel.pdf.
Notes: (1) All dimensions are in millimeters. Angles in degrees. (2) Complies with JEDEC MO-153.
(c) 2008 SCILLC. All rights reserved. Characteristics subject to change without notice.
11
Doc. No. MD-5028 Rev. D
CAT4016
QSOP 24-Lead (VS, VSR) (1)
D
SYMBOL MIN NOM MAX
A A1 b c D
E1 E
1.37 0.10 0.20 0.19 8.56 5.82 3.81 0.635 BSC 0.28 0.41 0.254 BSC 0 7 BSC
1.73 0.25 0.31 0.25 8.74 6.19 3.98 0.48 0.86 8
E E1 e h L L2 1 2
e
TOP VIEW
b
2
h
A
1 L
END VIEW
A1
SIDE VIEW
c
L2
For current Tape and Reel information, download the PDF file from: http://www.catsemi.com/documents/tapeandreel.pdf.
Notes: (1) All dimensions are in millimeters. Angles in degrees. (2) Complies with JEDEC MO-137.
Doc. No. MD-5028 Rev. D
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(c) 2008 SCILLC. All rights reserved. Characteristics subject to change without notice.
CAT4016
TQFN 24-Pad 4 x 4mm (HV6) (1
D
A DETAIL A
E
E2
PIN#1 ID PIN#1 INDEX AREA TOP VIEW D2
A1 SIDE VIEW
BOTTOM VIEW
b SYMBOL MIN NOM MAX L
e
A A1 A3 b D D2 E E2 e L
0.70 0.00 0.18 3.90 2.40 3.90 2.40 0.30
0.75 0.02 0.20 REF 0.25 4.00 - 4.00 - 0.50 BSC 0.40
0.80 0.05
DETAIL A
0.30 4.10 2.90 4.10 2.90 0.50
A
FRONT VIEW
A3
)
For current Tape and Reel information, download the PDF file from: http://www.catsemi.com/documents/tapeandreel.pdf.
Notes: (1) All dimensions are in millimeters. Angles in degrees. (2) Complies with JEDEC MO-220.
(c) 2008 SCILLC. All rights reserved. Characteristics subject to change without notice.
13
Doc. No. MD-5028 Rev. D
CAT4016
EXAMPLE OF ORDERING INFORMATION (1)
Prefix CAT
Device # 4016
Suffix HV6 -G T2
Product Number 4016 Optional Company ID Package W: SOIC Y: TSSOP VS: QSOP VSR: QSOP(4) HV6: TQFN
Tape & Reel T: Tape & Reel 1: 1,000/Reel (5) 2: 2,000/Reel
Lead Finish Blank: Matte-Tin G: NiPdAu
For Product Top Mark Codes, click here: http://www.catsemi.com/techsupport/producttopmark.asp
Notes: (1) All packages are RoHS-compliant (Lead-free, Halogen-free). (2) The device used in the above example is a CAT4016HV6-GT2 (TQFN, NiPdAu, Tape & Reel, 2,000/Reel). (3) For additional package and temperature options, please contact your nearest ON Semiconductor Sales office. (4) Different pin outs, see page 2. (5) SOIC package availability in 1,000/Reel. All other packages are 2,000/Reel.
Doc. No. MD-5028 Rev. D
14
(c) 2008 SCILLC. All rights reserved. Characteristics subject to change without notice.
CAT4016
REVISION HISTORY
Date 26-Sep-07 17-Oct-07 09-Apr-08 19-Nov-08 Rev. A B C D Reason Initial Issue Update Absolute Maximum Ratings Update Ordering Information table, added TQFN in NiPdAu plated finish. Update Package Outline Drawings Update Example of Ordering Information Add Top Mark Codes link Change logo and fine print to ON Semiconductor
ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. "Typical" parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including "Typicals" must be validated for each customer application by customer's technical experts. SCILLC does not convey any license under its patent rights nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.
PUBLICATION ORDERING INFORMATION
LITERATURE FULFILLMENT: Literature Distribution Center for ON Semiconductor P.O. Box 5163, Denver, Colorado 80217 USA Phone: 303-675-2175 or 800-344-3860 Toll Free USA/Canada Fax: 303-675-2176 or 800-344-3867 Toll Free USA/Canada Email: orderlit@onsemi.com N. American Technical Support: 800-282-9855 Toll Free USA/Canada Europe, Middle East and Africa Technical Support: Phone: 421 33 790 2910 Japan Customer Focus Center: Phone: 81-3-5773-3850 ON Semiconductor Website: www.onsemi.com Order Literature: http://www.onsemi.com/orderlit For additional information, please contact your local Sales Representative
(c) 2008 SCILLC. All rights reserved. Characteristics subject to change without notice.
15
Doc. No. MD-5028, Rev. D

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