TLE6365GXUMA1 - INFINEON TECHNOLOGIES AG

Type Package Marking

TLE 6365 G PG-DSO-8 6365G

Step Down Voltage Regulator with Reset

TLE 6365

P/PG-DSO-8-3, -6, -7, -8, -9

Data Sheet 1 Rev. 1.9, 2007-07-30

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

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.

Data Sheet 2 Rev. 1.9, 2007-07-30

TLE 6365

Pin Configuration

Figure 1 Pin Configuration (top view)

Table 1 Pin Definitions and Functions

Pin No. Symbol Function

1RReference Input; an external resistor from this pin to GND

determines the reference current and so the oscillator / switching

frequency.

2ROReset Output; open drain output from reset comparator with an

internal pull-up resistor

3BUCBuck-Converter Compensation Input; output of internal error

amplifier; for loop-compensation and therefore stability connect an

external R-C-series combination to GND.

4GNDGround; analog signal ground

5VCC Output Voltage Input; feedback input (with integrated resistor

divider) and logic supply input; external blocking capacitor

necessary

7BUOBuck Converter Output; source of the integrated power-DMOS

6BDSBuck Driver Supply Input; voltage to drive the buck converter

powerstage

8VSSupply Voltage Input; buck converter input voltage; external

blocking capacitor necessary.

A E P03319 .V S D

BUC

GND

BUO

BDS

VCC

TLE 6365 G

TLE 6365

Data Sheet 3 Rev. 1.9, 2007-07-30

Block Diagram

Figure 2 Block Diagram

AEA03315.VSD

TLE 6365 G

Biasing

and VREF

GND

5VCC

Buck

Converter 7BUO

BUC 3

6BDS

VInternal

Reference

Current

Generator

and

Oscillator

Undervoltage

Reset

Generator

2ROR1

Data Sheet 4 Rev. 1.9, 2007-07-30

TLE 6365

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.

Table 2 Absolute Maximum Ratings

Parameter Symbol Limit Values Unit Remarks

Min. Max.

Voltages

Supply voltage VS-0.3 46 V –

Buck output voltage VBUO -1 46 V –

Buck driver supply voltage VBDS -0.3 48 V 0°C≤Tj≤150°C

-0.3 47 V -40°C≤Tj<0°C

Buck compensation input

voltage

VBUC -0.3 6.8 V –

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 VHBM -2 2 kV –

Temperatures

Junction temperature Tj-40 150 °C–

Storage temperature Tstg -50 150 °C–

TLE 6365

Data Sheet 5 Rev. 1.9, 2007-07-30

Table 3 Operating Range

Parameter Symbol Limit Values Unit Remarks

Min. Max.

Supply voltage VS-0.3 40 V –

Supply voltage VS535VVS increasing

Supply voltage VS4.5 36 V VS decreasing

Supply voltage VS-0.3 4.5 V Buck-Converter

OFF

Buck output voltage VBUO -0.6 40 V –

Buck driver supply voltage VBDS -0.3 48 V 0°C≤Tj≤150°C

-0.3 47 V -40°C≤Tj<0°C

Buck compensation input

voltage

VBUC 03.0V–

Logic supply voltage VCC 4.0 6.2 V –

Reset output voltage VRO -0.3 VCC + 0.3 V –

Current reference voltage VCREF 01.23V–

Junction temperature Tj-40 150 °C–

Thermal Resistance

Junction ambient Rthj-a – 180 K/W –

Data Sheet 6 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 Unit Test Condition

Min. Typ. Max.

Current Consumption

Current consumption;

see Figure 6

IS–1.5 4 mA ICC = 0 mA

Current consumption;

see Figure 6

IS–510mAICC = 400 mA

Under- and Over-Voltage Lockout at VS

UV ON voltage;

buck conv. ON

VSUVON 4.0 4.5 5.0 V VS increasing

UV OFF voltage;

buck conv. OFF

VSUVOFF 3.5 4.0 4.5 V VS decreasing

UV Hysteresis voltage VSUVHY 0.2 0.5 1.0 V HY = ON - OFF

OV OFF voltage;

buck conv. OFF

VSOVOFF 34 37 40 V VS increasing

OV ON voltage;

buck conv. ON

VSOVON 30 33 36 V VS decreasing

OV Hysteresis voltage VSUVHY 1.5 4 10 V HY = OFF - ON

Over-Voltage Lockout at VCC

OV OFF voltage;

buck conv. OFF

VCCOVOFF 5.5 6.0 6.5 V VCC increasing

OV ON voltage;

buck conv. ON

VCCOVON 5.25 5.75 6.25 V VCC decreasing

OV Hysteresis voltage VCCOVHY 0.10 0.25 0.50 V HY = OFF - ON

TLE 6365

Data Sheet 7 Rev. 1.9, 2007-07-30

Buck-Converter; BUO, BDS, BUC and VCC

Logic supply voltage VCC 4.9 – 5.1 V 1 mA < ICC < 400 mA;

see Figure 6

Efficiency;

see Figure 6 η–85–%

ICC = 400 mA;

VS = 14 V

Power-Stage ON

resistance

RBUON –0.380.5ΩTj = 25 °C;

IBUO = 0.6 A

Power-Stage ON

resistance

RBUON –– 1.0ΩIBUO = 0.6 A

Buck overcurrent

threshold

IBUOC 0.7 0.9 1.2 A –

Input current on pin

VCC

ICC –– 500µAVCC = 5 V

Buck Gate supply

voltage;

VBGS = VS - VBDS

VBGS 57.210V–

Reference Input; R (Oscillator; Timebase for Buck-Converter and Reset)

Voltage on pin R VR–1.4– VRR = 100 kΩ

Oscillator frequency fOSC 85 95 105 kHz Tj = 25 °C

Oscillator frequency fOSC 75 – 115 kHz –

Cycle time for reset

timing

tCYL –1 –mstCYL = 100 / fOSC

Table 4 Electrical Characteristics (cont’d)

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 Unit Test Condition

Min. Typ. Max.

Data Sheet 8 Rev. 1.9, 2007-07-30

TLE 6365

Reset Generator; RO

Reset threshold;

VCC decreasing

VRT 4.50 4.65 4.75 V VRO H to L or L to H

transition;

VRO remains low down

to VCC > 1 V

Reset low voltage VROL –0.20.4VIROL = 1 mA;

2.5 V < VCC < VRT

Reset low voltage VROL –0.20.4VIROL = 0.2 mA;

1V < VCC < VRT

Reset high voltage VROH VCC -

0.1

–VCC +

0.1

VIROH = 0 mA

Reset pull-up current IRO –240–µA 0 V < VRO < 4 V

Reset Reaction time tRR 10 40 90 µsVCC < VRT

Power-up reset delay

time

tRD –128–tCYL VCC ≥ 4.8 V

Thermal Shutdown (Boost and Buck-Converter OFF)

Thermal shutdown

junction temperature

TjSD 150 175 200 °C–

Thermal switch-on

junction temperature

TjSO 120 – 170 °C–

Temperature

hysteresis ∆T–30– K–

Table 4 Electrical Characteristics (cont’d)

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 Unit Test Condition

Min. Typ. Max.

TLE 6365

Data Sheet 9 Rev. 1.9, 2007-07-30

Circuit Description

Below some important sections of the TLE 6365 are described in more detail.

Power On Reset

In order to avoid any system failure, a sequence of several conditions has to be passed.

In case of VCC power down (VCC < VRT for t > tRR) a logic LOW signal is generated at the

pin RO to reset an external microcontroller. When the level of VCC reaches the reset

threshold VRT, the signal at RO remains LOW for the Power-up reset delay time tRD

before switching to HIGH. If VCC drops below the reset threshold VRT for a time extending

the reset reaction time tRR, the reset circuit is activated and a power down sequence of

period tRD is initiated. The reset reaction time tRR avoids wrong triggering caused by short

“glitches” on the VCC-line.

Figure 3 Reset Function

AET03325.VSD

Invalid Invalid

Start Up

Invalid

VCC

VPG

VRT

Typ. 4.70 V

Typ. 4.65 V

1 V

< tRR < tRD

ON Delay

Started

ON Delay

Stopped

tRD

tRR tRD

ON Delay

Power Start-Up Normal Failed NFailed Normal

Data Sheet 10 Rev. 1.9, 2007-07-30

TLE 6365

Buck Converter

A stabilized logic supply voltage (typ. 5 V) for general purpose is realized in the system

by a buck converter. An external buck-inductance LBU is PWM switched by a high side

DMOS power transistor with the programmed frequency (pin R).

The buck converter uses the temperature compensated bandgap reference voltage (typ.

2.8 V) for its regulation loop.

This reference voltage is connected to the non-inverting input of the error amplifier and

an internal voltage divider supplies the inverting input. Therefore the output voltage VCC

is fixed due to the internal resistor ratio to typ. 5.0 V.

The output of the error amplifier goes to the inverting input of the PWM comparator as

well as to the buck compensation output BUC.

When the error amplifier output voltage exceeds the sawtooth voltage the output power

MOS-transistor is switched on. So the duration of the output transistor conduction phase

depends on the VCC level. A logic signal PWM with variable pulse width is generated.

External loop compensation is required for converter stability, and is formed by

connecting a compensation resistor-capacitor series-network (RBUC, CBUC) between pin

BUC and GND.

In the case of overload or short-circuit at VCC (the output current exceeds the buck

overcurrent threshold IBUOC) the DMOS output transistor is switched off by the

overcurrent comparator immediately.

In order to protect the VCC input as well as the external load against catastrophic failures,

an overvoltage protection is provided which switches off the output transistor as soon as

the voltage at pin VCC exceeds the internal fixed overvoltage threshold VCCOVOFF = typ.

6.0 V.

Also a battery undervoltage protection is implemented in the TLE 6365 to avoid wrong

operation of the following supplied devices, the typical threshold when decreasing the

battery voltage is at VSUVOFF = typ. 4.0 V.

TLE 6365

Data Sheet 11 Rev. 1.9, 2007-07-30

Figure 4 Buck Converter Block Diagram

AEA03316.VSD

trtr

Oscillator

trtr

Schmitt-Trigger 1

Vmax

Vmin

Vhigh

Vlow tt

Ramp

Pin 1

OFF

when H

Clock

Error-FF

L when

Tj > 175°C

RVCC2

28 Ω

RVCC1

22 ΩError

Amp.

GND

VRef

2.8 V

VCC

Pin 5

VCC

BUC

Pin 3 RProt1

Error-Signal

Error-Ramp

PWM

Comp. H when

Error-Signal <

Error-Ramp

Output Stage

OFF when H

NOR1

GND

L when Overcurrent

NAND 2

H =

OFF

PWM-FF

INV H =

Gate

Driver

Gate Driver

Supply

Power

D-MOS

BUO

Pin 7

BDS

Pin 6

Comp.

RSense

18 mΩ

VthOC

18 mV

Pin 8

RVCC4

10.3 Ω

RVCC3

39.7 ΩOV

Comp.

GND

VthOV

1.2 V

VCC

GND

Comp.

GND

VthUV

4 V

200 Ω

H when

OV at VCC

H when

UV at VBOOST

Data Sheet 12 Rev. 1.9, 2007-07-30

TLE 6365

Figure 5 Most Important Waveforms of the Buck Converter Circuit

AED02673_6365

Error

and

min

max

OCLK

PWM

BUO

BUOC

DBU

BUO

Overcurrent Threshold Exceeded

Controlled by theLoad-Current Increasing with Time;

Error Voltage

Overcurrent CompControlled by the Error Amp

TLE 6365

Data Sheet 13 Rev. 1.9, 2007-07-30

Application Circuit

Figure 6 Application Circuit

AEA03310.VSD

TLE 6365 G

Biasing

and VREF

GND

VCC

Buck

Converter BUO

BDS

VInternal

Reference

Current

Generator

and

Oscillator

Undervoltage

Reset

Generator

ROR1

100 kΩ

RCO

47 kΩ

CCO

470 nF

BUC

DBU

LBU

220 µH

+VCC

Reset

Output

CBU1

100 µF

CBU2

220 nF

ZD1

36 V

+CS

220 nF

10 µF

VBatt

CBOT

10 nF

Device

DBU

LBU

200 V; 1 A; SOT89

Remarks

220 µH; 0.8 A; 0.53 Ω

220 µH; 0.8 A; 0.61 Ω

Schottky; 100 V; 1 A

Infineon

Supplier

Epcos

Coilcraft

BAW78C

Type

SS14

B82476-A1224-M

DO3316P-224

Data Sheet 14 Rev. 1.9, 2007-07-30

TLE 6365

Diagrams: Oscillator and Boost/Buck-Converter Performance

In the following the behaviour of the Boost/Buck-converter and the oscillator is shown.

Efficiency Buck vs.

Boost Voltage

Feedback Voltage vs. Junction

Temperature

Oscillator Frequency Deviation vs.

Junction Temperature

Buck Overcurrent Threshold vs.

Junction Temperature

AED03017

655

15 25 V 30

= 5 V

Load

= 120 mA

80 mA

40 mA

AED03356.VSD

4.80 °C

4.85

4.90

4.95

5.00

5.05

5.10

5.15

VCC

-50 -25 025 50 75 100 150

IBUO = 400 mA

AED03016

-15

∆

fOSC

-10

-5

kHz

-50 -25 0 25 50 75 100 ˚C 150

= 25 ˚C

Referred to fOSC

AED03018

-50

-25 0 25 50 75 100 ˚C 150

0.8

0.9

1.1

1.2

1.3

1.4

(Buck-Converter)

BUOC

Data Sheet 15 Rev. 1.9, 2007-07-30

TLE 6365

Current Consumption vs.

Junction Temperature

Efficiency Buck vs. Load

Oscillator Frequency vs.

Resistor between R and GND

Buck ON Resistance vs.

Junction Temperature

AED02940

0.5

1.5

2.5

-50 -25 0 25 50 75 100 ˚C 150

Boost

Boost ON

Buck ON

BO boost

= 0 mA

AED02942

LOAD

50 150 250mA

RT, HT

AED02982

100

200

500

1000

OSC

10 20 50 100 200 k 1000Ω

= 25 ˚C@

kHz

AED03355.VSD

-50

°C

100

300

500

700

200

400

600

800

1000

-25 0 25 50 75 100 150

RBUON @ IBUO = 600 mA

mΩ

RON

Data Sheet 16 Rev. 1.9, 2007-07-30

TLE 6365

Package Outlines

Figure 7 PG-DSO-8-16 (Plastic Dual Small Outline)

Green Product (RoHS compliant)

To meet the world-wide customer requirements for environmentally friendly products

and to be compliant with government regulations the device is available as a green

product. Green products are RoHS-Compliant (i.e Pb-free finish on leads and suitable

for Pb-free soldering according to IPC/JEDEC J-STD-020).

1) Does not include plastic or metal protrusion of 0.15 max. per side

-0.06

-0.2

+0.1

0.41

1.27

0.1

0.2

(1.45)

0.175

1.75 MAX.

±0.2

0.64

-0.2

0.19

+0.06

0.35 x 45°

±0.25

MAX.8°

Index

Marking

±0.07

2) Lead width can be 0.61 max. in dambar area

GPS01229

You can find all of our packages, sorts of packing and others in our

Infineon Internet Page “Products”: http://www.infineon.com/products.

Dimensions in mm

SMD = Surface Mounted Device

TLE 6365

Data Sheet 17 Rev. 1.9, 2007-07-30

Revision History

Version Date Changes

Rev. 1.9 2007-07-30 Initial version of RoHS-compliant derivate of TLE 6365

Page 1: AEC certified statement added

Page 1 and Page 16:RoHS compliance statement and

Green product feature added

Page 1 and Page 16: Package changed to RoHS compliant

version

Legal Disclaimer and Infineon Logo updated

Edition 2007-07-30

Published by

Infineon Technologies AG

81726 Munich, Germany

Legal Disclaimer

The information given in this document shall in no event be regarded as a guarantee of conditions or

characteristics. With respect to any examples or hints given herein, any typical values stated herein and/or any

information regarding the application of the device, Infineon Technologies hereby disclaims any and all warranties

and liabilities of any kind, including without limitation, warranties of non-infringement of intellectual property rights

of any third party.

Information

For further information on technology, delivery terms and conditions and prices, please contact the nearest

Infineon Technologies Office (www.infineon.com).

Warnings

Due to technical requirements, components may contain dangerous substances. For information on the types in

question, please contact the nearest Infineon Technologies Office.

Infineon Technologies components may be used in life-support devices or systems only with the express written

approval of Infineon Technologies, if a failure of such components can reasonably be expected to cause the failure

of that life-support device or system or to affect the safety or effectiveness of that device or system. Life support

devices or systems are intended to be implanted in the human body or to support and/or maintain and sustain

and/or protect human life. If they fail, it is reasonable to assume that the health of the user or other persons may

be endangered.