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1
TC4403 1.5A HIGH-SPEED, FLOATING LOAD DRIVER
FEATURES
s s s s s s s Low Quiescent Current ......................... 300A Max Capacitive Inputs With 300mV Hysteresis Both Inputs Must Be Driven to Drive Load Low Output Leakage High Peak Current Capability Fast Output Rise Time Outputs Individually Testable
GENERAL DESCRIPTION
The TC4403 is a modified version of the TC4425 driver, intended to drive floating or isolated loads requiring highcurrent pulses. The load is intended to be connected between the outputs without other reference to supply or ground. Then, only when both logic inputs and the VDD input are energized, is power supplied to the load. This construction allows the implementation of a wide variety of redundant input controllers. The low OFF-state output leakage and independence of the two half-circuits permit a wide variety of testing schemes to be utilized to assure functionality. The high peak current capability, short internal delays, and fast output rise and fall times ensure that sufficient power will be available to the load when it is needed. The TTL and CMOS compatible inputs allow operation from a wide variety of input devices. The ability to swing the inputs negative without affecting device performance allows negative biases to be placed on the inputs for greater safety. In addition, the capacitive nature of the inputs allows the use of series resistors on the inputs for extra noise suppression. The TC4403 is built for outstanding ruggedness and reliability in harsh applications. Input voltage excursions above the supply voltage or below ground are clamped internally without damaging the device. The output stages are power MOSFETs with high-speed body diodes to prevent damage to the driver from inductive kickbacks.
2 3 4 5 6
APPLICATIONS
s s s Isolated Load Drivers Pulsers Safety Interlocks
ORDERING INFORMATION
Part No. TC4403CPA TC4403EPA TC4403MJA Package 8-Pin PDIP 8-Pin PDIP 8-Pin CerDIP Temperature Range 0C to 70C - 40C to +85C - 55C to +125C
PIN CONFIGURATION
NC IN (VDD) GND IN (GND) 1 2 3 4 TC4403 8 7 6 5 NC OUT (VDD) VDD OUT (GND)
(TOP VIEW)
FUNCTIONAL BLOCK DIAGRAM
6 VDD
7 300mV INPUT HYSTERESIS 5
OUT (VDD) OUT (GND)
7
IN (GND) IN (VDD)
4 2 TC4403
GND
3 EFFECTIVE INPUT C = 20pF (EACH INPUT)
TC4403-6 10/11/96
8
4-213
TELCOM SEMICONDUCTOR, INC.
1.5A HIGH-SPEED, FLOATING LOAD DRIVER TC4403
ABSOLUTE MAXIMUM RATINGS*
Supply Voltage ......................................................... +22V Maximum Chip Temperature ................................. +150C Storage Temperature Range ................ - 65C to +150C Lead Temperature (Soldering, 10 sec) ................. +300C Package Thermal Resistance CerDIP, RJ-A ............................................... 150C/W CerDIP, RJ-C ................................................. 50C/W PDIP, RJ-A .................................................. 125C/W PDIP, RJ-C .................................................... 42C/W Operating Temperature Range C Version ............................................... 0C to +70C E Version .......................................... - 40C to +85C M Version ....................................... - 55C to +125C
*Static-sensitive device. Unused devices must be stored in conductive material. Protect devices from static discharge and static fields. Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions above those indicated in the operational sections of the specifications is not implied. Exposure to Absolute Maximum Rating Conditions for extended periods may affect device reliability.
Thermal Derating Curves
1600 1400 8 Pin DIP 8 Pin CerDIP 1000 800 8 Pin SOIC 600 400 200 0 0 10 20 30 40 50 60 70 80 90 100 110 120
MAX. POWER (mW)
1200
AMBIENT TEMPERATURE (C)
ELECTRICAL CHARACTERISTICS: TA = +25C with 4.5V VDD 18V, unless otherwise specified.
Symbol Input
VIH VIL IIN Logic 1 High Input Voltage Logic 0 Low Input Voltage Input Current High Output Voltage Low Output Voltage Sourcing Output Resistance Grounding Output Resistance Peak Output Current Rise Time Fall Time Delay Time Delay Time Power Supply Current 2.4 -- -1000 VDD - 0.025 -- -- -- -- -- -- -- -- -- -- -- -- 10 -- -- 2.8 3.5 1.5 23 25 33 38 1.5 0.15 -- 0.8 +1000 -- 0.025 5 5 -- 35 35 75 75 2.5 0.25 V V nA V V A nsec nsec nsec nsec mA
Parameter
Test Conditions
Min
Typ
Max
Unit
- 5V VIN VDD
Output
VOH VOL ROS ROG IPK tR tF tD1 tD2 IS
IOUT = 10mA, VDD = 18V IOUT = -10mA, VDD = 18V
Switching Time (Note 1)
Figure 1, CL = 1800pF Figure 1, CL = 1800pF Figure 1, CL = 1800pF Figure 1, CL = 1800pF VIN = 3V (Both Inputs) VIN = 0V (Both Inputs)
Power Supply
NOTE: 1. Switching times guaranteed by design.
4-214
TELCOM SEMICONDUCTOR, INC.
1.5A HIGH-SPEED, FLOATING LOAD DRIVER TC4403
ELECTRICAL CHARACTERISTICS:
Symbol Input
VIH VIL IIN Logic 1 High Input Voltage Logic 0 Low Input Voltage Input Current High Output Voltage Low Output Voltage Sourcing Output Resistance Grounding Output Resistance Rise Time Fall Time Delay Time Delay Time Power Supply Current 2.4 -- -10,000 VDD - 0.025 -- -- -- -- -- 10 -- -- 3.7 4.3 -- 0.8 +10,000 -- 0.025 8 8 V V nA V V
1
Measured over operating temperature range with 4.5V VDD 18V unless otherwise specified. Test Conditions Min Typ Max Unit
Parameter
2 3 4 5
- 5V VIN VDD
Output
VOH VOL ROS ROG
VIN = 2.4V IOUT = 10mA, VDD = 18V VIN = 2.4V IOUT = -10mA, VDD = 18V Figure 1, CL = 1800pF Figure 1, CL = 1800pF Figure 1, CL = 1800pF Figure 1, CL = 1800pF VIN = 3V (Both Inputs) VIN = 0V (Both Inputs)
Switching Time (Note 1)
tR tF tD1 tD2 IS -- -- -- -- -- -- 28 32 32 38 2 0.2 60 60 100 100 3.5 0.3 nsec nsec nsec nsec mA
Power Supply
NOTE: 1. Switching times guaranteed by design.
VDD = 16V
1F WIMA MKS-2 0.1F MLC
VDD = 16V
1F WIMA MKS-2 0.1F MLC
10k
INPUT
OUTPUT
C L = 1800pF
TC4403
INPUT
TC4403
C L = 1800pF
6 7
OUTPUT
10K
+5V INPUT 0V
16V
+5V INPUT 10%
t D1 tF
0V
16V
10% 90%
t D1
90% OUTPUT 10% 0V
OUTPUT 0V
tR
10%
Figure 1. Switching Time Test Circuits
8
4-215
TELCOM SEMICONDUCTOR, INC.
1.5A HIGH-SPEED, FLOATING LOAD DRIVER TC4403
TYPICAL CHARACTERISTICS
Rise Time vs. Supply Voltage
100
4700pF TA = +25C
Fall Time vs. Supply Voltage
100
4700pF T = +25C A
80
tFALL (nsec)
tRISE (nsec)
80
3300pF 2200pF
3300pF
60 40 20
60
2200pF
40 20
470pF
1500pF 1000pF
470pF
1500pF 1000pF
0
4 6 8 10 12 VDD
0
14 16 18
4 6 8 10 12 VDD
14
16
18
Rise Time vs. Capacitive Load
100
T = +25C A
Fall Time vs. Capacitive Load
100
T = +25C A
80
tRISE (nsec)
5V
80
5V
t FALL (nsec)
60 40 20 0 100
10V 15V
60 40 20 0 100
10V 15V
1000 C LOAD (pF)
10,000
1000 C LOAD (pF)
10,000
Rise and Fall Times vs. Temperature
32 30 28
TIME (nsec)
Propagation Delay vs. Input Amplitude
100
CLOAD = 2200pF
CLOAD = 2200pF
VDD = 18V
t FALL
DELAY TIME (nsec)
t D1 80
VDD = 10V
26 24 22 20
t FALL t RISE
t RISE
60
40
t D2
18 -55 -35 -15 5 25 45 65 85 105 125 TEMPERATURE (C)
20
0 1 2 3 4567 INPUT (V) 8 9 10 11 12
4-216
TELCOM SEMICONDUCTOR, INC.
1.5A HIGH-SPEED, FLOATING LOAD DRIVER TC4403
TYPICAL CHARACTERISTICS (Cont.)
Delay Time vs. Supply Voltage
50
DELAY TIME (nsec)
1
Delay Time vs. Temperature
50
CLOAD = 2200pF
2 3
45 40 35 30 25 20 4 6 8 10
C LOAD = 2200pF T = +25C A
DELAY TIME (ns)
45 40 35 30 25 20 -55 -35 -15
tD2
tD2 t D1
tD1
12
14
16
18
5
25
45
65
85 105 125
VDD
TEMPERATURE (C)
Quiescent Current vs. Voltage
TA = +25C BOTH INPUTS = 1
Quiescent Current vs. Temperature
1.4 1.2
4 5
I QUIESCENT (mA)
I QUIESCENT (mA)
1
1.0 0.8 0.6 0.4 0.2 INPUTS = 0 5 25 45 65 85 105 125 INPUTS = 1
0.1
BOTH INPUTS = 0
0.01 4 6 8 10 12 14 16 18 VDD
0.0 -55 -35 -15
TEMPERATURE (C)
Typical Discharge Characteristics
5.7 5.1
CLOSED CIRCUIT VOLTAGE
TYPICAL APPLICATION
+15V TC4422 POWER 6 2 7
6 7
RLOAD 5 3
4.5 3.9 3.3 2.7 2.1 1.5 0 75 150 225 300 75 HOURS
HOURS OF SERVICE
2.768V 2.727V
FIRE
RT
+
+
ARM
RT
TC4403 4
1 M
1 M
525
-15V
8
4-217
TELCOM SEMICONDUCTOR, INC.

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