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PDF VN5050AJ-E Data sheet ( Hoja de datos )
| Número de pieza | VN5050AJ-E | |
| Descripción | Single channel high side driver | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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VN5050AJ-E
Single channel high side driver with analog
current 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
50 mΩ
16.5 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
– 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 VN5050AJ-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
VN5050AJ-E
Order codes
Tape and Reel
VN5050AJTR-E
February 2008
Rev 6
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www.st.com
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1 page  
VN5050AJ-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 Battery connection.
OUTPUT
Power output.
GND
Ground connection. Must be reverse battery protected by an external
diode/resistor network.
INPUT
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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VN5050AJ-E
Electricwawlws.pDeactaifSihceaetti4oUn.csom
Table 10. Current sense (8V<VCC<16V)
Symbol
Parameter
Test conditions
K0 IOUT/ISENSE
IOUT= 0.05A; VSENSE=0.5V; VCSD=0V;
Tj= -40°C...150°C
K1 IOUT/ISENSE
IOUT=1A; VSENSE=0.5V; VCSD=0V;
Tj= -40°C...150°C
IOUT= 1A; VSENSE= 0.5V; VCSD= 0V;
Tj= 25°C...150°C
dK1/K1(1)
Current sense ratio
drift
IOUT=1A; VSENSE= 0.5V;
VCSD=0V;
TJ=-40 °C to 150 °C
K2 IOUT/ISENSE
IOUT= 2A; VSENSE= 4V; VCSD= 0V;
Tj= -40°C...150°C
IOUT= 2A; VSENSE= 4V; VCSD= 0V;
Tj= 25°C...150°C
dK2/K2(1)
Current sense ratio
drift
IOUT= 2 A; VSENSE= 4 V;
VCSD= 0V;
TJ= -40 °C to 150 °C
K3 IOUT/ISENSE
IOUT= 4A; VSENSE= 4V; VCSD= 0V;
Tj= -40°C...150°C
IOUT= 4A; VSENSE= 4V; VCSD= 0V;
Tj= 25°C...150°C
dK3/K3(1)
Current sense ratio
drift
IOUT= 4 A; VSENSE= 4 V;
VCSD=0V;
TJ=-40 °C to 150 °C
ISENSE0
Analog sense
leakage current
IOUT= 0A; VSENSE=0V;
VCSD= 5V; VIN=0V; Tj= -40°C...150°C
VCSD= 0V; VIN=5V; Tj= -40°C...150°C
IOUT= 2A; VSENSE= 0V;
VCSD= 5V; VIN=5V; Tj= -40°C...150°C
Openload ON state
IOL current detection VIN = 5V, ISENSE= 5 µA
threshold
VSENSE
Max analog sense
output voltage
IOUT=2A; VCSD=0V
VSENSEH
Analog sense
output voltage in
overtemperature
condition
VCC=13V; RSENSE=10KΩ
ISENSEH
Analog sense
output current in
overtemperature
condition
VCC=13V, VSENSE=5V
Min. Typ. Max. Unit
1100 2440 3480
1600 2030 2580
1630 2030 2430
-10 +10 %
1770 2000 2310
1800 2000 2200
-6 +6 %
1860 1970 2140
1870 1970 2120
-3 +3 %
0 1 µA
0 2 µA
0 1 µA
4 20 mA
5V
9V
8 mA
11/31
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| Páginas | Total 31 Páginas | |
| PDF Descargar | [ Datasheet VN5050AJ-E.PDF ] | |
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