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VN751PT
Datasheet (ST)
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Datasheet VN751PT Datasheet (ST)

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Features
VN751PT
High side driver
Typ e R
DS(on)
I
out
V
CC
VN751PT 60 mΩ 2.5 A 36 V
■ CMOS compatible input
■ Thermal shutdown
■ Shorted load protection
■ Protection against loss of ground
■ Very low standby current
■ Compliance to 61000-4-4 IEC test up to 4 kV
■ Open drain status output

Figure 1. Block diagram

PPAK
Description
The VN751PT 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 V 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.
V
CC
pin voltage
CC
OVERVOLTAGE
DETECTION
UNDERVOLTAGE
DETECTION
Power CLAMP
DRIVER
CURRENT LIMITER
OUTPUT
GND
INPUT
STATUS
V
CC
CLAMP
OVERTEMPERATURE
DETECTION
LOGIC
November 2009 Doc ID 12137 Rev 8 1/17
www.st.com
17
Contents VN751PT
Contents
1 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Pin connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4 Waveforms and truth table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5 Test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
6 Application schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
7 Reverse polarity protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
8 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
9 Order code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
10 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2/17 Doc ID 12137 Rev 8
VN751PT Maximum ratings

1 Maximum ratings

Table 1. Absolute maximum rating

Symbol Parameter Value Unit
V
- V
- I
I
- I
I
V
T
E
OUT
I
STAT
ESD
P
T
T
DC supply voltage (overvoltage protected) 45 V
CC
Reverse DC supply voltage -0.3 V
CC
DC reverse ground pin current -200 mA
GND
DC output current Internally limited A
Reverse DC output current -5 A
OUT
DC input current +/- 10 mA
IN
DC status current +/- 10 mA
Electrostatic discharge ( R = 1.5 kΩ; C = 100 pF ) 5000 V
Power dissipation TC = 25 °C
tot
Junction operating temperature Internally limited °C
J
Case operating temperature - 40 to 150 °C
c
Storage temperature - 55 to 150 °C
stg
Single-pulse avalanche energy 0.8 J
AS
Internally limited W

Table 2. Thermal data

Symbol Parameter Value Unit
R
R
1. When mounted on a FR-4 printed circuit board with 0.5 cm2 of Cu (at least 35μm thick) connected to all V
Thermal resistance junction-ambient Max
thJA
Thermal resistance junction-case Max 3 °C/W
thJC
pins.
CC
50
(1)
Doc ID 12137 Rev 8 3/17
°C/W
Pin connections VN751PT

2 Pin connections

Figure 2. Connection diagram (top view)

Figure 3. Current and voltage conventions

4/17 Doc ID 12137 Rev 8
VN751PT Electrical characteristics

3 Electrical characteristics

8 V < V
< 36 V; -40 °C < TJ < 125 °C, unless otherwise specified
CC

Table 3. Power

Symbol Parameter Test conditions Min Typ Max Unit
V
V
V
R
I
L(off)
CC
USD
OV
ON
I
Operating supply voltage
Undervoltage shut-down
Overvoltage shut-down
On state resistance
Supply current
S
Off state output current
I
= 2 A; TJ = 25 °C
OUT
= 2 A
I
OUT
Off state; V
On state; V
On state; V
= V
V
IN
OUT
= 24 V; T
CC
= 24 V
CC
= 24 V;T
CC
= 0 V
CASE
CASE
=25 °C
=100 °C
5.5 36 V
345.5V
36 V
60
180mΩmΩ
10
20
1.5
1.8
010μA

Table 4. Switching ( VCC = 24 V )

Symbol Parameter Test conditions Min Typ Max Unit
μA mA mA
dV
dV
t
d(on)
t
d(off)
OUT
OUT
/dt
/dt
Turn-on delay time
Turn-off delay time
Turn -on voltage slope
(on)
Turn -off voltage slope
(off)
= 12 Ω from VIN rising edge to
R
L
V
= 2.4 V
OUT
= 12 Ω from VIN falling edge to
R
L
= 21.6 V
V
OUT
= 12Ω from V
R
L
= 19.2 V
V
OUT
= 12 Ω from V
R
L
= 2.4 V
V
OUT
= 2.4 V to
OUT
= 21.6 V to
OUT
12 μs
35 μs
0.80 V/μs
0.30 V/μs
Doc ID 12137 Rev 8 5/17
Electrical characteristics VN751PT

Table 5. Input pin

Symbol Parameter Test conditions Min Typ Max Unit
V
IL
I
IL
V
IH
I
IH
V
hyst
I
IN
V
ICL
Input low level 1.25 V
Low level input current
V
= 1.25 V
IN
1 μA
Input high level 3.25 V
High level input current
Input hysteresis voltage
Input current
Input clamp voltage
V
= 3.25 V
IN
V
IN = VCC
I
= 1 mA
IN
= -1 mA
I
IN
= 5 V
0.5 V
6
6.8
-0.7
10 μA
10 μA
8 V

Table 6. Status pin

Symbol Parameter Test conditions Min Typ Max Unit
V
STAT
I
LSTAT
C
STAT
V
SCL
Status low output voltage
Status leakage current
Status pin input capacitance
Status clamp voltage
I
= 1.6 mA
STAT
Normal operation; V
Normal operation; V
= 1 mA;
I
STAT
=-1 mA
I
STAT
STAT
STAT
= 5 V
= 5 V
6 6.8
-0.7
0.5 V
10 µA
100 pF
8 V
V
V

Table 7. Protections

Symbol Parameter Test conditions Min Typ Max Unit
T
TSD
T
R
T
hyst
I
lim
V
demag
6/17 Doc ID 12137 Rev 8
Shut-down temperature
Reset temperature 135 °C
Thermal hysteresis 7 20 °C
Current limitation
CC
t = 0.4 ms
LOAD
V
= 24 V, R
Turn-off output clamp
RL =12 Ω; L = 6 mH
voltage
= 10 mΩ,
150 175 200 °C
2.7 6.0 A
V
-47VCC-52VCC-
CC
57
V
VN751PT Waveforms and truth table

4 Waveforms and truth table

Figure 4. Switching time waveforms

V
OUT
t
d(off)
90%
dV
OUT
/dt
(off)
t
t
80%
/dt
dV
OUT
(on)
10%
V
IN
t
d(on)

Table 8. Truth table

Conditions Input Output Status
Normal operation
Current limitation
Overtemperature
Undervoltage
Overvoltage
L
H
L H H
L H
L H
L H
L
H
L X X
L
L
L
L
L
L
(T
(T
J
J
< T
> T
TSD
TSD
H H
H
) H
) L
H
L
X X
H H
Doc ID 12137 Rev 8 7/17
Waveforms and truth table VN751PT

Figure 5. Waveforms

NORMAL OPERATION
INPUT
LOAD VOLTAGE
STATUS
UNDERVOLTAGE
V
CC
V
USD
V
USDhyst
INPUT
LOAD VOLTAGE
STATUS
undefined
V
CC
INPUT LOAD VOLTAGE
STATUS
T
J
INPUT
LOAD CURRENT
STATUS
T T
TSD R
V
CC<VOV
OVERVOLTAGE
VCC>V
OV
OVERTEMPERATURE
8/17 Doc ID 12137 Rev 8
VN751PT Test circuit

5 Test circuit

Figure 6. Peak short circuit current test circuit

R

Figure 7. Avalanche energy test circuit

R
Doc ID 12137 Rev 8 9/17
Application schematic VN751PT

6 Application schematic

Figure 8. Application schematic

10/17 Doc ID 12137 Rev 8
VN751PT 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:
R
≤ 600 mV / (IS in ON state max).
GND
R
≥ (-VCC) / (-I
GND
where -IGND is the DC reverse ground pin current and can be found in the absolute maximum rating section of the device datasheet.
GND
)
The power dissipation associated to R
PD = (-V
CC
)2/R
GND
during reverse polarity condition is:
GND
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 R
(given by IS in ON state max * R
GND
) produce a difference
GND
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 R
GND
.

Figure 9. Reverse polarity protection

+ Vcc
+ Vcc
Status
Status
i
i
Output
Output
i
Input
Input
(Optional)
(Optional)
i
i
GND
R
R
GND
GND
GND
i
Load
Load
Doc ID 12137 Rev 8 11/17
Package mechanical data VN751PT

8 Package mechanical data

In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK specifications, grade definitions and product status are available at: www.st.com. ECOPACK is an ST trademark.
®
packages, depending on their level of environmental compliance. ECOPACK®
12/17 Doc ID 12137 Rev 8
VN751PT Package mechanical data

Table 9. PPAK mechanical data

Dim. Min Typ Max
A 2.20 2.40
A1 0.90 1.10
A2 0.03 0.23
B 0.40 0.60
B2 5.20 5.40
C 0.45 0.60
C2 0.48 0.60
D1 5.1
D 6.00 6.20
E 6.40 6.60
E1 4.7
e1.27
G 4.90 5.25
G1 2.38 2.70
H 9.35 10.10
L2 0.8 1.00
L4 0.60 1.00
R0.2
V2 0º 8º
Package weight Gr. 0.3
Doc ID 12137 Rev 8 13/17
Package mechanical data VN751PT

Figure 10. Package dimensions

14/17 Doc ID 12137 Rev 8
VN751PT Order code

9 Order code

Table 10. Order codes

Order codes Package Packaging
VN751PT
PPAK
VN751PTTR Tape and reel
Tu b e
Doc ID 12137 Rev 8 15/17
Revision history VN751PT

10 Revision history

Table 11. Document revision history

Date Revision Changes
07-Mar-2006 1 Initial release
31-Mar-2006 2
10-Jul-2006 3
12-Mar-2007 4
15-May-2007 5
18-Sep-2007 6
08-Jul-2008 7 Added Section 7 on page 11
30-Nov-2009 8 Updated coverpage and Chapter 6 on page 10
Added V
Updated V
SCL
value Ta b le 1 , I
CC
min value Tab le 7
lim
Typo in Table 4 on page 5, updated P
Typo in Table 1 on page 3, V
Added I
valuein Table 1 on page 3
STAT
ESD
value Ta bl e 1.
tot
16/17 Doc ID 12137 Rev 8
VN751PT
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Doc ID 12137 Rev 8 17/17
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