Data Sheet, V1.0, January 2004
BTS 5234L
Smart High-Side Power Switch
PROFET
Two Channels, 60 mΩ
Automotive Power
N e v e r
s t o p
t h i n k i n g .
Smart High-Side Power Switch
BTS 5234L
Table of Contents
Page
Product Summary
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
1 Overview
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
1.1 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
1.2 Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
2 Pin Configuration
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
2.1 Pin Assignment BTS 5234L . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
2.2 Pin Definitions and Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
3 Electrical Characteristics
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
3.1 Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
4 Block Description and Electrical Characteristics
. . . . . . . . . . . . . . . . . . . . . . .10
4.1 Power Stages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
4.1.1 Output On-State Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.1.2 Input Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.1.3 Inductive Output Clamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.1.4 Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.2 Protection Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
4.2.1 Over Load Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.2.2 Reverse Polarity Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.2.3 Over Voltage Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.2.4 Loss of Ground Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.2.5 Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.3 Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
4.3.1 ON-State Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.3.2 OFF-State Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.3.3 Sense Enable Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.3.4 Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5 Package Outlines BTS 5234L
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
6 Revision History
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Data Sheet
2
V1.0, 2004-01-23
Smart High-Side Power Switch
PROFET
BTS 5234L
Product Summary
The BTS 5234L is a dual channel high-side power
switch in P-DSO-12-2 package providing embedded
protective functions.
The power transistor is built by a N-channel vertical
power MOSFET with charge pump. The device is
monolithically integrated in Smart SIPMOS
technology.
P-DSO-12-2
Operating voltage
Over voltage protection
On-State resistance
Nominal load current (one channel active)
Current limitation
Current limitation repetitive
Standby current for whole device with load
V
bb(on)
V
bb(AZ)
R
DS(ON)
4.5 .. 28 V
41 V
60 mΩ
3.5 A
23 A
6A
2.5 µA
I
L(nom)
I
L(LIM)
I
L(SCr)
I
bb(OFF)
Basic Features
•
•
•
•
•
•
•
Very low standby current
3.3 V and 5 V compatible logic pins
Improved electromagnetic compatibility (EMC)
Stable behavior at under voltage
Logic ground independent from load ground
Secure load turn-off while logic ground disconnected
Optimized inverse current capability
Type
BTS 5234L
Data Sheet
Ordering Code
Q67060-S6155
3
Package
P-DSO-12-2
V1.0, 2004-01-23
Smart High-Side Power Switch
BTS 5234L
Protective Functions
•
•
•
•
•
•
•
•
•
Reverse battery protection without external components
Short circuit protection
Overload protection
Multi-step current limitation
Thermal shutdown with restart
Thermal restart at reduced current limitation
Over voltage protection without external resistor
Loss of ground protection
Electrostatic discharge protection (ESD)
Diagnostic Functions
•
•
•
•
•
•
•
Enhanced IntelliSense signal for each channel
Enable function for diagnosis pins (IS1 and IS2)
Proportional load current sense signal by current source
High accuracy of current sense signal at wide load current range
Open load detection in ON-state by load current sense
Open load detection in OFF-state by voltage source
Feedback on over temperature and current limitation in ON-state
Applications
• µC compatible high-side power switch with diagnostic feedback for 12 V grounded
loads
• All types of resistive, inductive and capacitive loads
• Suitable for loads with high inrush currents, so as lamps
• Suitable for loads with low currents, so as LEDs
• Replaces electromechanical relays, fuses and discrete circuits
Data Sheet
4
V1.0, 2004-01-23
Smart High-Side Power Switch
BTS 5234L
Overview
1
Overview
The BTS 5234L is a dual channel high-side power switch (two times 60 mΩ) in
P-DSO-12-2 power package providing embedded protective functions.
The Enhanced IntelliSense pins IS1 and IS2 provide a sophisticated diagnostic feedback
signal including current sense function and open load in off state. The diagnosis signals
can be switched on and off by the sense enable pin SEN.
An integrated ground resistor as well as integrated resistors at each input pin (IN1, IN2,
SEN) reduce external components to a minimum.
The power transistor is built by a N-channel vertical power MOSFET with charge pump.
The inputs are ground referenced CMOS compatible. The device is monolithically
integrated in Smart SIPMOS technology.
1.1
Block Diagram
channel 1
VBB
load current
sense
clamp for
inductive load
internal
power
supply
logic
IN1
IS1
SEN
ESD
protection
gate control
&
charge pump
open load
detection
temperature
sensor
multi step
load current
limitation
OUT1
channel 2
IN2
IS2
control and protection circuit
equivalent to
channel 1
OUT2
R
GND
GND
Figure 1
Block Diagram
Data Sheet
5
V1.0, 2004-01-23
京公网安备 11010802033920号
EEWORLD
