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
■
V
CC
V
CC
R
ON
I
LIMH
I
S
41 V
4.5 to 36V
25 m
40 A
2 µA
PowerSSO-12
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 V
cc
– Thermal shut down
Device summary
– 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 V
CC
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.
Order codes
Package
Tube
PowerSSO-12
VN5025AJ-E
Tape and Reel
VN5025AJTR-E
September 2013
Rev 6
1/31
www.st.com
31
Contents
VN5025AJ-E
Contents
1
2
Block diagram and pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1
2.2
2.3
2.4
Absolue maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Electrical characteristics curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3
Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.1
GND protection network against reverse battery . . . . . . . . . . . . . . . . . . . 21
3.1.1
3.1.2
Solution 1: resistor in the ground line (RGND only) . . . . . . . . . . . . . . . . 21
Solution 2: a diode (DGND) in the ground line . . . . . . . . . . . . . . . . . . . 22
3.2
3.3
3.4
Load dump protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
MCU I/Os protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Maximum demagnetization energy (VCC = 13.5V) . . . . . . . . . . . . . . . . . 23
4
Package and PC board thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.1
PowerSSO-12
TM
thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
5
Package and packing information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
5.1
5.2
5.3
ECOPACK® packages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
PowerSSO-12™ mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Packing information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
6
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
2/31
VN5025AJ-E
List of tables
List of tables
Table 1.
Table 2.
Table 3.
Table 4.
Table 5.
Table 6.
Table 7.
Table 8.
Table 9.
Table 10.
Table 11.
Table 12.
Table 13.
Table 14.
Table 15.
Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Pin function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Suggested connections for unused and N.C. pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Power section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Switching (VCC=13V, Tj=25°C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Logic input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Protection and diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Current sense (8V<V
CC
<16V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Truth table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Electrical transient requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Thermal parameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
PowerSSO-12
TM
mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
3/31
List of figures
VN5025AJ-E
List of figures
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
Figure 8.
Figure 9.
Figure 10.
Figure 11.
Figure 12.
Figure 13.
Figure 14.
Figure 15.
Figure 16.
Figure 17.
Figure 18.
Figure 19.
Figure 20.
Figure 21.
Figure 22.
Figure 23.
Figure 24.
Figure 25.
Figure 26.
Figure 27.
Figure 28.
Figure 29.
Figure 30.
Figure 31.
Figure 32.
Figure 33.
Figure 34.
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Configuration diagram (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Current and voltage conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Current sense delay characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Delay response time between rising edge of ouput current and rising edge of current sense
(CS enabled) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
I
OUT
/I
SENSE
Vs. I
OUT
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Maximum current sense ratio drift vs load current- to update. . . . . . . . . . . . . . . . . . . . . . . 14
Switching characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Output voltage drop limitation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Off state output current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
High level input current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Input clamp voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Input low level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Input high level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Input hysteresis voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
On state resistance vs. T
case
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
On state resistance vs. V
CC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Undervoltage shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Turn- On voltage slope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
I
LIMH
vs. T
case
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Turn- Off voltage slope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
CS_DIS high level voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
CS_DIS clamp voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
CS_DIS low level voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Application schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Maximum turn Off current versus inductance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
PowerSSO-12
TM
PC board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Rthj-amb Vs. PCB copper area in open box free air condition . . . . . . . . . . . . . . . . . . . . . . 24
PowerSSO-12
TM
thermal impedance junction ambient single pulse . . . . . . . . . . . . . . . . . 25
Thermal fitting model of a single channel HSD in PowerSSO-12
TM
. . . . . . . . . . . . . . . . . . 25
PowerSSO-12™ package dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
PowerSSO-12
TM
tube shipment (no suffix) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
PowerSSO-12
TM
tape and reel shipment (suffix “TR” . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
4/31
VN5025AJ-E
Block diagram and pin description
1
Block diagram and pin description
Figure 1.
Block diagram
V
CC
V
CC
CLAMP
UNDERVOLTAGE
PwCLAMP
DRIVER
OUTPUT
I
LIM
V
DSLIM
GND
LOGIC
INPUT
Pwr
LIM
OVERTEMP.
I
OUT
CURRENT
SENSE
K
CS_DIS
Table 2.
Name
V
CC
Pin function
Function
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.
OUTPUT
GND
INPUT
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.
5/31
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