LT8253/LT8253A

1

Rev. 0

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TYPICAL APPLICATION

FEATURES

DESCRIPTION

40V USB Type-C Power Delivery

Buck-Boost Controller

The LT®8253/LT8253A are synchronous 4-switch buck-

boost controllers optimized for automotive USB-C power

delivery. The LT8253/53A are fully compliant to the USB

Power Delivery (PD) specification when used in conjunc-

tion with a USB Type-C or PD port controller. The output

voltage slew rate can be controlled through the FB pin.

The LT8253 can deliver up to 100W output power with

98% peak efficiency when running below the AM band.

The LT8253A can deliver up to 60W output power with

95% peak efficiency when running above the AM band.

The LT8253/8253A support single buck-boost output for

1 Type-C port with power good flag. Over-current, over-

voltage, and short-circuit protections are also available.

Automotive 60W USB-C Power Delivery Charger (400kHz)

APPLICATIONS

n

Proprietary Low-EMI Buck-Boost Architecture

n

Wide Input Range: 4V to 40V

n

Synchronous Switching: Up to 98% Efficiency

n

±1.5% Output Voltage Regulation

n

Single Output supports 1 Type-C Port up to 100W

n

Output Channel Enable Function

n

Programmable Switching Frequency with External

Synchronization and Spread Spectrum

n

Over-Current, Over-Voltage, Short-Circuit Protection

n

Available in 28-Lead Side Solderable QFN Package

n

AEC-Q100 Qualification in Progress

n

Automotive USB-C Power Delivery

n

General Purpose Voltage Regulator

All registered trademarks and trademarks are the property of their respective owners.

L1

6.8µH

0.1µF

0.1µF

200k

100k

100nF

5m

RS1

M1

M2

M4

M3

0.47µF

100k

L2

3.3µH

VIN

VOUT

EN/UVLO

FB

SSFM ON

NO SSFM/SYNC

SYNC

D1: DIODES INC BZT52C12TQ-7-F

FBIN: 2x MURATA BLM31KN471SZ1L

FBOUT: 2x TDK MPZ2012S102ATD25

L1: COILCRAFT XAL8080-682ME

L2: COILCRAFT XEL5050-332ME

M1-M4: INFINEON IPZ40N04S5L-4R8

M5: DIODES INC DMP3010LPSQ

RS1: SUSUMU KRL3216D-M-R005

RS2: SUSUMU KRL2012

LT8253

SW2

SW1

INTVCC

PGOOD

SYNC/SPRD

VC

RT

SS

400kHz

LSP

LSN

BST1

BST

BG1

TG1

BG2

TG2

1µF

50V

1µF

25V

VREF

VOUTEN

TEST

GND

2x

10µF

50V

2x

10µF

25V

47µF

50V

4.7µF

30k

2.2nF

200k

50k

270µF

25V

4.7µF

25V

VBUS

CC1

CC2

GND

D+2

D-1

D+1

D-2

USB Type-C

P1.0

P0.0

P0.1

P2.1

P_CTRL

C_CTRL

DP1

DM1

C_MON

CC1

CC2

DP0

DM0

GND

VCCD

VDDD

COMP

FB

CSP

VBUS_IN

CYPD3196

221k

10k

PVIN

1M

59k

0.1µF

D1

M5

470

10nF

RS2

5m

6.04k

DP0

390pF

390pF

SHEILD

100k

2.2nF

2kV

PVIN

1µF

+

0.1µF

1µF

+

0.1µF

1µF

+

0.1µF

VOUTEN

VOUTEN

EXT SYNC

VIN

10µF

+

0.1µF

FBIN

2x

10µF

50V

50V

10µF

+

0.1µF

FBOUT

25V

2

5.1

2

5.1

100k

10nF

10k

T1

INTVCC

NTC

100k

10nF

10k

T2

INTVCC

NTC

T1

T2

8253A TA01