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PDF VN5025AJ-E Data sheet ( Hoja de datos )
| Número de pieza | VN5025AJ-E | |
| Descripción | Single channel high side driver | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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VN5025AJ-E
Single channel high side driver with analog sense
for automotive applications
Features
Max supply voltage
Operating voltage range
Max on-state resistance
Current limitation (typ)
Off state supply current
VCC
VCC
RON
ILIMH
IS
41 V
4.5 to 36V
25 mΩ
40 A
2 µA
■ General features
– Inrush current active management by
power limitation
– Very low stand-by current
– 3.0V CMOS compatible input
– Optimized electromagnetic emission
– Very low electromagnetic susceptibility
– In compliance with the 2002/95/EC
european directive
■ Diagnostic functions
– proportional load current sense
– high current sense precision for wide range
currents
– current sense disable
– thermal shutdown indication
– very low current sense leakage
■ Protection
– Undervoltage shut-down
– Overvoltage clamp
– package
– Load current limitation
– Self limiting of fast thermal transients
– Protection against loss of ground and loss
of Vcc
– Thermal shut down
PowerSSO-12
– Reverse battery protection (see Application
schematic )
– Electrostatic discharge protection
Application
■ All types of resistive, inductive and capacitive
loads
■ Suitable as LED driver
Description
The VN5025AJ-E is a monolithic device made
using STMicroelectronics VIPower technology. It
is intended for driving resistive or inductive loads
with one side connected to ground. Active VCC pin
voltage clamp protects the device against low
energy spikes (see ISO7637 transient
compatibility table). This device integrates an
analog current sense which delivers a current
proportional to the load current (according to a
known ratio) when CS_DIS is driven low or left
open. When CS_DIS is driven high, the
CURRENT SENSE pin is in a high impedance
condition. Output current limitation protects the
device in overload condition. In case of long
overload duration, the device limits the dissipated
power to safe level up to thermal shut-down
intervention. Thermal shut-down with automatic
restart allows the device to recover normal
operation as soon as fault condition disappears.
Table 1.
Device summary
Package
PowerSSO-12
Tube
VN5025AJ-E
Order codes
Tape and Reel
VN5025AJTR-E
February 2008
Rev 5
1/31
www.st.com
31
1 page  
VN5025AJ-E
Block diagram anwdwpwi.nDadteasShceriept4tiUo.cnom
1 Block diagram and pin description
Figure 1. Block diagram
VCC
GND
INPUT
CS_DIS
VCC
CLAMP
LOGIC
UNDERVOLTAGE
DRIVER
PwCLAMP
PwrLIM
ILIM
VDSLIM
OVERTEMP.
IOUT
K
OUTPUT
CURRENT
SENSE
Table 2. Pin function
Name
Function
VCC
OUTPUT
GND
INPUT
Battery connection.
Power output.
Ground connection. Must be reverse battery protected by an external
diode/resistor network.
Voltage controlled input pin with hysteresis, CMOS compatible. Controls
output switch state.
CURRENT SENSE Analog current sense pin, delivers a current proportional to the load current.
CS_DIS
Active high CMOS compatible pin, to disable the current sense pin.
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VN5025AJ-E
Electricwawlws.pDeactaifSihceaetti4oUn.csom
Table 9. Protection and diagnostics(1)
Symbol
Parameter
Test conditions
Min. Typ. Max. Unit
IlimH
DC short circuit
current
IlimL
Short circuit current
during thermal cycling
TTSD
Shutdown
temperature
TR Reset temperature
TRS
Thermal reset of
STATUS
THYST
Thermal hysteresis
(TTSD-TR)
VDEMAG
Turn-Off output
voltage clamp
Output voltage drop
VON limitation
VCC= 13V
5V<VCC<36V
28 40 56 A
56 A
VCC= 13V; TR<Tj<TTSD
16 A
150 175 200
TRS + 1 TRS + 5
135
°C
°C
°C
7 °C
IOUT= 2A; VIN=0; L=6mH
IOUT= 0.2A
Tj= -40°C...150°C
(see Figure 9)
VCC-41 VCC-46 VCC-52 V
25 mV
1. To ensure long term reliability under heavy overload or short circuit conditions, protection and related
diagnostic signals must be used together with a proper software strategy. If the device operates under
abnormal conditions this software must limit the duration and number of activation cycles.
Table 10. Current sense (8V<VCC<16V)
Symbol
Parameter
Test conditions
KLED
K0
dK0/K0(1)
K1
dK1/K1(1)
K2
IOUT/ISENSE
IOUT/ISENSE
Current Sense ratio
drift
IOUT/ISENSE
Current Sense ratio
drift
IOUT/ISENSE
IOUT= 0.05A, VSENSE=0.5V,
VCSD=0V
Tj= -40°C...150°C
IOUT= 0.5A; VSENSE=0.5V;
VCSD=0V;
Tj= -40°C...150°C
IOUT=0.5 A; VSENSE= 0.5 V;
VCSD=0V;
TJ= -40 °C to 150 °C
IOUT= 2A; VSENSE=4V; VCSD=0V;
Tj= -40°C...150°C
Tj= 25°C...150°C
IOUT=2A; VSENSE= 4V;
VCSD=0V;
TJ= -40 °C to 150 °C
IOUT= 3A; VSENSE=4V; VCSD=0V;
Tj= -40°C...150°C
Tj= 25°C...150°C
Min. Typ. Max. Unit
1420 3420 5180
2010 3100 4160
-12 12 %
2220 2880 3600
2310 2880 3450
-10 10 %
2380 2870 3400
2490 2870 3250
11/31
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| PDF Descargar | [ Datasheet VN5025AJ-E.PDF ] | |
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