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VN751S
High side driver
Features
Type VN751S

RDS(on) 60 m
Iout 2.5 A
VCC 36 V SO-8
CMOS compatible input Thermal shutdown Shorted load protection Undervoltage and overvoltage shutdown Protection against loss of ground Very low stand-by current Compliance to 61000-4-4 IEC test up to 4 kV
Description
The VN751S is a monolithic device designed in STMicroelectronics VIPower M0-3 technology, intended for driving any kind of load with one side connected to ground. Active VCC pin voltage clamp protects the device against low energy spikes. Active current limitation combined with thermal shutdown and automatic restart protect the device against overload. Device automatically turns off in case of ground pin disconnection. This device is especially suitable for industrial applications in conformity with IEC 61131-2 programmable controllers international standard.
Figure 1.
Block diagram
VCC
VCC CLAMP
OVERVOLTAGE DETECTION UNDERVOLTAGE DETECTION
GND
Power CLAMP
DRIVER INPUT LOGIC CURRENT LIMITER STATUS OUTPUT
OVERTEMPERATURE DETECTION
July 2008
Rev 6
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Contents
VN751S
Contents
1 2 3 4 5 6 7 8 9 10 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Pin connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Waveforms and truth table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Application schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Reverse polarity protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Order code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
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VN751S
Maximum ratings
1
Maximum ratings
Table 1.
Symbol VCC - VCC - IGND IOUT - IOUT IIN ISTAT VESD Ptot TJ Tc Tstg EAS
Absolute maximum rating
Parameter DC supply voltage (overvoltage protected) Reverse DC supply voltage DC reverse ground pin current DC output current Reverse DC output current DC input current DC status current Electrostatic discharge ( R = 1.5 k; C = 100 pF ) Power dissipation TC = 25 C Junction operating temperature Case operating temperature Storage temperature Single-pulse avalanche energy Value 45 -0.3 -200 Internally limited -5 +/- 10 +/- 10 5000 Internally limited Internally limited - 40 to 150 - 55 to 150 0.8 Unit V V mA A A mA mA V W C C C J
Table 2.
Symbol RthJA RthJC
Thermal data
Parameter Thermal resistance junction-ambient Thermal resistance junction-case Max 82(2) Max 15 C/W Value 93(1) Unit C/W
1. When mounted on a standard single-sided FR-4 board with 0.5 cm2 of Cu (at least 35m) thick connected to all VCC pins. Horizontal mounting and no artificial air flow. 2. When mounted on a standard single-sided FR-4 board with 2 cm2 of Cu (at least 35m) thick connected to all VCC pins. Horizontal mounting and no artificial air flow.
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Pin connections
VN751S
2
Figure 2.
Pin connections
Connection diagram (top view)
Figure 3.
Current and voltage conventions
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VN751S
Electrical characteristics
3
Electrical characteristics
8 V < VCC < 36 V; -40 C < TJ < 125 C, unless otherwise specified
Table 3.
Symbol VCC VUSD VOV RON
Power
Parameter Operating supply voltage Undervoltage shut-down Overvoltage shut-down On state resistance IOUT = 2 A; TJ = 25 C IOUT = 2 A Off state; VCC = 24 V; TCASE =25 C 10 1.5 Test conditions Min 5.5 3 36 60 180 20 1.8 0 10 4 Typ Max 36 5.5 Unit V V V m m A mA mA A
IS
Supply current
On state; VCC = 24 V On state; VCC = 24 V;TCASE =100 C
IL(off)
Off state output current
VIN = VOUT = 0 V
Table 4.
Symbol td(on) td(off) dVOUT/dt(on) dVOUT/dt(off)
Switching ( VCC = 24 V )
Parameter Turn-on delay time Test conditions RL = 12 from VIN rising edge to VOUT = 2.4 V RL = 12 from VIN falling edge to VOUT = 21.6 V RL = 12 from VOUT = 2.4 V to VOUT = 19.2 V RL = 12 from VOUT = 21.6 V to VOUT = 2.4 V Min Typ 12 Max Unit s s
Turn-off delay time Turn -on voltage slope Turn -off voltage slope
35
0.80
V/s
0.30
V/s
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Electrical characteristics
VN751S
Table 5.
Symbol VIL IIL VIH IIH Vhyst IIN VICL
Input pin
Parameter Input low level Low level input current Input high level High level input current Input hysteresis voltage Input current Input clamp voltage VIN = VCC = 5 V IIN = 1 mA IIN = -1 mA 6 6.8 -0.7 VIN = 3.25 V 0.5 10 8 VIN = 1.25 V 1 3.25 10 Test conditions Min Typ Max 1.25 Unit V A V A V A V V
Table 6.
Symbol VSTAT ILSTAT CSTAT VSCL
Status pin
Parameter Status low output voltage Status leakage current Status pin input capacitance Status clamp voltage Test conditions ISTAT = 1.6 mA Normal operation; VSTAT = 5 V Normal operation; VSTAT = 5 V ISTAT = 1 mA; ISTAT =-1 mA 6 6.8 -0.7 Min Typ Max 0.5 10 100 8 Unit V A pF V V
Table 7.
Symbol TTSD TR Thyst Ilim Vdemag
Protections
Parameter Shut-down temperature Reset temperature Thermal hysteresis Current limitation VCC = 24 V, RLOAD = 10 m, t = 0.4 ms Test conditions Min 150 135 7 2.7 VCC47 VCC52 20 6.0 VCC57 Typ 175 Max 200 Unit C C C A V
Turn-off output clamp RL =12 ; L = 6 mH voltage
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VN751S
Waveforms and truth table
4
Waveforms and truth table
Figure 4. Switching time waveforms
VOUT 90% 80%
dVOUT/dt(on) 10%
dVOUT/dt(off)
t
VIN td(on) td(off)
t
Table 8.
Truth table
Input L H L H H L H L H L H Output L H L X X L L L L L L Status H H H (TJ < TTSD) H (TJ > TTSD) L H L X X H H
Conditions Normal operation
Current limitation
Overtemperature Undervoltage Overvoltage
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Waveforms and truth table Figure 5. Waveforms
VN751S
NORMAL OPERATION INPUT LOAD VOLTAGE STATUS UNDERVOLTAGE VUSDhyst VUSD
VCC INPUT LOAD VOLTAGE STATUS
undefined
OVERVOLTAGE VCCVOV
TJ INPUT LOAD CURRENT STATUS
TTSD TR
OVERTEMPERATURE
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VN751S
Test circuit
5
Figure 6.
Test circuit
Peak short circuit current test circuit
R
Figure 7.
Avalanche energy test circuit
R
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Application schematic
VN751S
6
Figure 8.
Application schematic
Application schematic
VN751S
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VN751S
Reverse polarity protection
7
Reverse polarity protection
A schematic solution to protect the IC against a reverse polarity condition is proposed. This schematic is effective with any type of load connected to the outputs of the IC. The RGND resistor value can be selected according to the following conditions to be met: 1. 2. RGND 600 mV / (IS in ON state max). RGND (-VCC) / (-IGND)
where -IGND is the DC reverse ground pin current and can be found in the absolute maximum rating section of the device datasheet. The power dissipation associated to RGNG during reverse polarity condition is: PD = (-VCC)2/RGND This resistor can be shared by several different ICs. In such case IS value on formula (1) is the sum of the maximum ON-state currents of the different devices. Please note that if the microprocessor ground and the device ground are separated then the voltage drop across the RGND (given by IS in ON state max * RGND) produce a difference between the generated input level and the IC input signal level. This voltage drop will vary depending on how many devices are ON in the case of several high side switches sharing the same RGND. Figure 9. Reverse polarity protection
+ Vcc Statusi Inputi GND Outputi
RGND (Optional)
Load
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Package mechanical data
VN751S
8
Package mechanical data
In order to meet environmental requirements, ST offers these devices in ECOPACK(R) packages. These packages have a lead-free second level interconnect . The category of second level interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com
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VN751S
Package mechanical data
Table 9.
Dim.
SO-8 mechanical data
mm Min Typ Max 1.75 0.1 0.25 1.65 0.65 0.35 0.19 0.25 0.85 0.48 0.25 0.5 45 ( typ. ) 4.8 5.8 1.27 3.81 3.8 0.4 4.0 1.27 0.6 8 (max.) 0.14 0.015 5.0 6.2 0.188 0.228 0.050 0.150 0.157 0.050 0.023 0.196 0.244 0.025 0.013 0.007 0.010 0.003 Min inch Typ Max 0.068 0.009 0.064 0.033 0.018 0.010 0.019
A a1 a2 a3 b b1 C c1 D E e e3 F L M S
Figure 10. Package dimensions
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Package mechanical data Figure 11. SO-8 tape and reel information
VN751S
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VN751S
Order code
9
Order code
Table 10. Order codes
Order codes VN751S VN751STR Package SO-8 SO-8 Packaging Tube tape and reel
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Revision history
VN751S
10
Revision history
Table 11.
Date
Document revision history
Revision 1 2 3 4 5 6 Initial release Document reformatted, typo in Section Table 3.: Power on page 5, updated Ptot value Table 2. Typo in Table 1 on page 3 VESD Added ISTAT valuein Table 1 on page 3 Updated Table 2 on page 3 Added Section 7 on page 11 Changes
18-Sep-2006 12-Mar-2007 15-May-2007 18-Sep-2007 11-Oct-2007 08-Jul-2008
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VN751S
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