Document
Step Down Voltage Regulator with Reset
TLE 6365
Features
• Step down converter • Supply Over- and Under-Voltage-Lockout • Low Output voltage tolerance • Output Overvoltage Lockout • Output Under-Voltage-Reset with delay • Overtemperature Shutdown • Wide Ambient operation range -40 °C to 125 °C • Wide Supply voltage operation range • Very low current consumption • Very small PG-DSO-8 SMD package • Green Product (RoHS compliant) • AEC Qualified
P/PG-DSO-8-3, -6, -7, -8, -9
Functional Description
The TLE 6365 G is a power supply circuit especially designed for automotive applications. 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 TLE 6365 G contains a buck converter and a power on reset feature to start up the system
The very small PG-DSO-8 SMD package meets the application requirements.
It delivers a precise 5 V fully short circuit protected output voltage.
Furthermore, the build-in features like under- and overvoltage lockout for supply- and output-voltage and the overtemperature shutdown feature increase the reliability of the TLE 6365 G supply system.
Type TLE 6365 G
Data Sheet
Package PG-DSO-8
1
Marking 6365G
Rev. 1.9, 2007-07-30
TLE 6365
Pin Configuration
R RO BUC GND
TLE 6365 G
18 27 36 45
AEP03319 .VSD
VS
BUO BDS
VCC
Figure 1 Pin Configuration (top view)
Table 1 Pin No. 1
2 3
4 5
7 6 8
Pin Definitions and Functions
Symbol Function
R Reference Input; an external resistor from this pin to GND determines the reference current and so the oscillator / switching frequency.
RO Reset Output; open drain output from reset comparator with an internal pull-up resistor
BUC
Buck-Converter Compensation Input; output of internal error amplifier; for loop-compensation and therefore stability connect an
external R-C-series combination to GND.
GND Ground; analog signal ground
VCC Output Voltage Input; feedback input (with integrated resistor
divider) and logic supply input; external blocking capacitor
necessary
BUO Buck Converter Output; source of the integrated power-DMOS
BDS
Buck Driver Supply Input; voltage to drive the buck converter powerstage
VS Supply Voltage Input; buck converter input voltage; external
blocking capacitor necessary.
Data Sheet
2 Rev. 1.9, 2007-07-30
Block Diagram
TLE 6365
VS 8
Biasing and VREF
6 BDS
BUC 3
Buck Converter
7 BUO
TLE 6365 G
VInternal
5 VCC
R1
Reference Current
Generator and
Oscillator
Undervoltage Reset
2 RO
Generator
4 GND
AEA03315.VSD
Figure 2 Block Diagram
Data Sheet
3 Rev. 1.9, 2007-07-30
TLE 6365
Table 2
Absolute Maximum Ratings
Parameter
Symbol Limit Values Unit Remarks
Min. Max.
Voltages Supply voltage Buck output voltage Buck driver supply voltage
Buck compensation input voltage
VS VBUO VBDS
VBUC
-0.3 46 -1 46 -0.3 48 -0.3 47 -0.3 6.8
V V V V V
–
–
0°C≤Tj≤150°C -40°C≤Tj<0°C
–
Logic supply voltage
VCC -0.3 6.8 V –
Reset output voltage
VRO -0.3 6.8 V –
Current reference voltage
VR
-0.3 6.8 V
–
ESD-Protection (Human Body Model; R = 1.5 kΩ; C = 100 pF)
All pins to GND Temperatures
VHBM
-2
2
kV –
Junction temperature Storage temperature
Tj -40 150 °C – Tstg -50 150 °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
4 Rev. 1.9, 2007-07-30
TLE 6365
Table 3
Operating Range
Parameter
Symbol Limit Values Unit Remarks
Min. Max.
Supply voltage Supply voltage Supply voltage Supply voltage
VS -0.3 40
VS 5
35
VS 4.5 36
VS -0.3 4.5
V–
V VS increasing V VS decreasing
V Buck-Converter OFF
Buck output voltage
VBUO
Buck driver supply voltage VBDS
Buck compensation input VBUC
voltage
-0.6 -0.3 -0.3 0
40 48 47 3.0
V–
V 0°C≤Tj≤150°C V -40°C≤Tj<0°C
V–
Logic supply voltage Reset output voltage Current reference voltage Junction temperature Thermal Resistance
VCC VRO VCREF Tj
4.0 -0.3 0 -40
6.2 V
VCC + 0.3 V
1.23 V 150 °C
– – – –
Junction ambient
Rthj-a
–
180 K/W –
Data Sheet
5 Rev. 1.9, 2007-07-30
TLE 6365
Table 4
Electrical Characteristics
8 V < VS < 35 V; 4.75 V < VCC < 5.25 V; -40 °C < Tj < 150 °C; RR = 47 kΩ; all voltages
with respect to ground; positive current defined flowing into the pin; unless otherwise
specified
Parameter
Symbol
Limit Values
Min. Typ. Max.
Current Consumption
Current consumption; IS
see Figure 6
– 1.5 4
Current consumption; IS
see Figure 6
–5
10
Under- and Over-Voltage Lockout at VS
UV ON voltage; buck conv. ON
VSUVON 4.0 4.5
5.0
UV OFF voltage; buck conv. OFF
VSUVOFF 3.5 4.0 4.5
UV Hysteresis voltage VSUVHY 0.2 0.5
OV OFF voltage; buck conv. OFF
VSOVOFF 34
37
1.0 40
OV ON voltage; buck conv. ON
VSOVON 30 33
36
OV Hysteresis voltage VSUVHY
Over-Voltage Lockout at VCC
OV OFF voltage; buck conv. OFF
VCCOVOFF
1.5 5.5
4 6.0
10 6.5
OV ON voltage; buck conv. O.