Multifunctional Voltage Regulator and Watchdog
TLE 6363
Data Sheet
Overview
Features
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Step up converter (Boost Voltage)
Boost Over- and Under-Voltage-Lockout
Step down converter (Logic Voltage)
2% output voltage tolerance
Logic Over- and Under-Voltage-Lockout
Overtemperature Shutdown
Power ON/OFF reset generator
Digital window watchdog
System Enable Output
Ambient operation temperature range – 40
°
C to 125
°
C
Wide Supply voltage operation range
Very low current consumption
Very small P-DSO-14-2 SMD package
Ordering Code
Q67006-A9601
Package
P-DSO-14-2
P-DSO-14-2
Type
TLE 6363 G
Functional Description
General
The
TLE 6363 G
is a multifunctional power supply circuit especially designed for
automotive applications.
It delivers a programmable step up voltage (Boost) and a precise 5 V fully short circuit
protected output voltage (Buck).
The
TLE 6363 G
contains a power on reset feature to start up the system, an integrated
digital window watchdog to monitor the connected microcontroller and a system enable
output to indicate the microcontroller window watchdog faults.
The device is based on Infineon’s power technology SPT
®
which allows bipolar and
CMOS control circuitry to be integrated with DMOS power devices on the same
monolithic circuitry.
The very small
P-DSO-14-2
SMD packages meet the application requirements.
Data Sheet Rev. 1.2
1
2003-06-02
TLE 6363
Furthermore, the build-in features like under- and overvoltage lockout for boost- and
buck-voltage and the overtemperature shutdown feature increase the reliability of the
TLE 6363 G
supply system.
Pin Definitions and Functions
Pin No.
SO-14
1
2
3
4
5
6
Symbol Function
R
RO
WDI
GND
SEN
BUC
Reference Input;
an external resistor from this pin to GND
determines the reference current and the oscillator frequency
Reset Output;
open drain output from reset comparator with an
internal pull up resistor
Watchdog Input;
input for the watchdog control signal from the
controller
Ground;
analog signal ground
System Enable Output;
open drain output from Watchdog
fail-circuit with an internal pull up resistor
Buck-Converter Compensation Input;
output of internal error
amplifier; for loop-compensation connect an external R-C-series
combination to GND
Supply Voltage Output;
buck converter output; external blocking
capacitor necessary
Buck Converter Output;
source of the integrated power-DMOS
Boost Converter Input;
input supply voltage of the IC; coming
from the boost converter output voltage; buck converter input
voltage
Buck Driver Supply Input;
voltage to drive the buck converter
powerstage
Boost Status Output;
open drain output from boost PWM
comparator
Boost Converter Feedback Input;
connect boost voltage divider
to this pin; internal reference is the boost feedback threshold
7
8
9
V
CC
BUO
V
BOOST
10
11
12
BDS
OVL
BOFB
V
BOFBTH
13
14
BOGND
Boost-Ground;
power signal ground; source of boost converter
power-DMOS
BOI
Boost Converter Input;
drain of the integrated buck converter
power-DMOS
Data Sheet Rev. 1.2
2
2003-06-02
TLE 6363
Pin Configuration
R
RO
WDI
GND
SEN
BUC
V
CC
1
2
3
4
5
6
7
14
13
12
11
10
9
8
AEP02960
BOI
BOGND
BOFB
OVL
BDS
V
Boost
BUO
Figure 1
Pin Configuration
(top view)
Data Sheet Rev. 1.2
3
2003-06-02
TLE 6363
Block Diagram
TLE 6363 G
BOFB
12
14
Boost
Converter
BOI
BOGND
BDS
13
10
Biasing
V
Boost
V
REF
9
BUC
6
Buck
Converter
V
BOOST
BUO
8
7
V
Internal
5
Reference
Current
Generator
and
Oscillator
Reset,
Window
Watchdog
and
System
Enable
V
CC
SEN
3
R
1
WDI
2
RO
11
4
GND
OVL
AEB03008
Figure 2
Block Diagram
Data Sheet Rev. 1.2
4
2003-06-02
TLE 6363
Absolute Maximum Ratings
Parameter
Symbol
Limit Values
min.
Voltages
Boost input voltage
Boost output voltage
Boost feedback voltage
Buck output voltage
Buck driver supply voltage
Buck compensation input
voltage
Logic supply voltage
Reset output voltage
System Enable output
voltage
Current reference voltage
Watchdog input voltage
OVL output voltage
max.
Unit
Remarks
V
BOI
V
BOOST
V
BOFB
V
BUO
V
BDS
V
BUC
V
CC
V
RO
V
SEN
V
R
V
WDI
V
OVL
– 0.3
– 0.3
– 0.3
–1
– 0.3
– 0.3
– 0.3
– 0.3
– 0.3
– 0.3
– 0.3
– 0.3
46
46
46
46
48
6.8
6.8
6.8
6.8
6.8
6.8
6.8
V
V
V
V
V
V
V
V
V
V
V
V
–
–
–
–
–
–
–
–
–
–
–
–
ESD-Protection (Human Body Model;
R
= 1.5 kΩ;
C
= 100 pF)
All pins to GND
Temperatures
Junction temperature
Storage temperature
V
HBM
–2
2
kV
–
T
j
T
stg
– 40
– 50
150
150
°
C
°
C
–
–
Note: Stresses above those listed here may cause permanent damage to the device.
Exposure to absolute maximum rating conditions for extended periods may affect
device reliability.
Data Sheet Rev. 1.2
5
2003-06-02
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