90% Efficiency

High Supply Capability to Deliver 5.0V 500mA

with input 3.6V-4.2V

14

µA Quiescent (switch-off) Supply Current

500KHz Fixed Switching Frequency

Zero Shutdown Mode Supply Current

Providing Flexibility for Using Internal and

External Power Switches

1.0V Low Start-up Input Voltage

Small SOT-26 & SOT89-5 Package

iency maintains long battery lifetime.

Ordering Information

Item

Package

Shipping

SOT89-5

KB3301MR

SOT-26

3000pcs/Reel&Tape

KB3301PR

SOT-89-5

3000pcs/Reel&Tape

Package Information

LCD Panel

DSC

MP3

Wireless Equipment

Portable Instrument

PDA

SOT89-5

SOT-26

Pin Configurations

SOT-26

SOT-89-5 Pin NamePin Function

1

1

CE

Chip enable

2

EXT

Output

3

5

GND

Ground

4

4

LX

Switching

5

2

VDD

Input

6

3

FB

Feedback input 1.25V

up to 300mA output current. The 500KHz high switching

The low start-up input voltage below 0.8V makes KB3301

the 14

µA low quiescent current together with high effic-

The KB3301 is available in small package SOT-26 and

The KB3301 is a small, high efficiency, and low voltage

step-up DC/DC converter with an Adaptive Current Mode

PWM control loop, includes an error amplifier, ramp

rate minimized the size of external components. Besides,

over a wide range of load currents. It operates in stable

waveforms

without

external

compensation.

suitable for 1 to 4 battery cells applications of providing

Step-up DC/DC converter

generator, comparator, switch pass element and driver

in which providing a stable and high efficient operation

Vin

3.3~10uH

L1

CE

EXT

VDD

GND

FB

LX

C3

100uF

C1

100uF

+

R1

1.6M/100K

1N5819

Vout

3.3V/5V

+

D1

R2

980k/33K

1uF

C2

P1 / 5

KB3301

KB3301

Note:Vin=3.6~4.2V, Vout=5.0V 500mA ( USB host application )

General Description

Features

Applications

Typical Application Circuit