ILC 6370/71

SOT-89 Step up Switching Regulator with Shutdown

Impala Linear Corporation

Impala Linear Corporation

1

(408) 574-3939

www.impalalinear.com

July 1999

ILC6370/1 1.3

50mA boost converter in 5-lead SOT-89 package. Only 3

external components are needed to complete the switcher

design, and frequency options of 50, 100, and 180kHz gives

the designer the ability to trade off system needs with

switcher design size.

87% max duty cycle gives conversion efficiencies of 85%.

Standard voltage options of 2.5V, 3.3V, and 5.0V at ±2.5%

accuracy feature on-chip phase compensation and soft-

start design.

ILC6371 drives an external transistor for higher current

switcher design, with all of the features and benefits of

the ILC6370.

! 85% efficiency at 50mA

! Start-up voltages as low as 900mV

! ±2.5% accurate outputs

! Complete switcher design with only 3 external components

! 50, 100 and 180kHz switching frequency versions available

! Shutdown to 0.5µA

! External transistor option allows several hundred milliamp

switcher design

! Cellular Phones, Pagers

! Portable Cameras and Video Recorders

! Palmtops and PDAs

Ordering Information*

ILC6370CP-25

2.5V±2.5%@50kHz

ILC6370CP-25

3.3V±2.5%@50kHz

ILC6370CP-50

5.0V±2.5%@50kHz

ILC6370BP-25

2.5V±2.5%@100kHz

ILC6370BP-33

3.3V±2.5%@100kHz

ILC6370BP-50

5.0V±2.5%@100kHz

ILC6370AP-25

2.5V±2.5%@180kHz

ILC6370AP-33

3.3V±2.5%@180kHz

ILC6370AP-50

5.0V±2.5%@180kHz

ILC6371CP-25

2.5V±2.5%@50kHz, external xtor

ILC6371CP-33

3.3V±2.5%@50kHz, external xtor

ILC6371CP-50

5.0V±2.5%@50kHz, external xtor

ILC6371BP-25

2.5V±2.5%@100kHz, external xtor

ILC6371BP-33

3.3V±2.5%@100kHz, external xtor

ILC6371BP-50

5.0V±2.5%@100kHz, external xtor

ILC6371AP-25

2.5V±2.5%@180kHz, external xtor

ILC6371AP-33

3.3V±2.5%@180kHz, external xtor

ILC6371AP-50

5.0V±2.5%@180kHz, external xtor

Standard Product offering comes in tape and reel,

quantity 1000 per reel, orientation right for SOT-89

V

PWM Co ntrol led

BUFFER

EXT

+

-

CHIP ENABLE

OSC

50/ 100/180KHz

V

DD

V

OUT

CE

P hase com p

V

re f

Slow Start

V

DD

is i nternall y connected to the V

SOT -89-5

(TOP VI EW)

13

2

V

OUT

CE

L

X

4

5

V

SS

N/C

SOT -89-5

(TOP VI EW)

13

2

V

OUT

CE

EXT

4

5

V

SS

N/C

ILC6370

ILC6371

General Description

Features

Applications

Block Diagram

Pin-Package Configurations