LP6255-02

Feb.-2014

www.lowpowersemi.com

Page 1 of 10

Preliminary Datasheet

LP6255

High Efficiency Synchronous Boost Convertor

General Description

The LP6255 is a Synchronous current mode boost

DC-DC converter with external N-channel MOSFET

for large power output. Programmable high switching

frequency allows wide application range and easy

setting with a few capacitors or resistors. Its error

amplifier is connected to an internal 1.31V precision

reference voltage. Current mode control and external

compensation network make it easy and flexible to

stabilize the system.

Order Information

LP6255 □ □ □

Package Type

QV: QFN-20

Applications



Battery products



Host OTG



Audio power



Electronic cigarette

Pin Configurations

1

2

3

4

5

6

7

8

9

10

COMP

FB

SLP

VREF

GND

EN

NC MODE

SS

VREF

OUT

GND

CS

VIN

NC

BST

GND

15

14

13

12

11

20

19

18

17

16

RT

LDR

LX

HDR

Features





Adaptive Dead time Control



Optional Diode Emulation Mode



Programmable Over Input current Protection



Over Temperature Protection



Programmable frequency switching



1.31V Reference voltage for setting output voltage



Available in TQFN-20 3×3mm

Marking Information

Device

Marking

Package

Shipping

LP6255QVF

LPS

LP6255

YWX

QFN-20

3K/REEL

Marking indication:

Y:Production year W:Production week X:Production batch.

Typical Application Circuit

CS

VIN

COMP

LDR

HDR

VOUT

FB

MODE

LP6255

MODE

Control

VIN

L

High side

NMOS

Low side

NMOS

VOUT

66uF

EN

Chip

Enable

SLP