Datasheet > SS6612COTR

SS6612COTR

更新时间： 2024-11-21 06:13:59

品牌	Logo	应用领域
SSC		转换器
页数	文件大小	规格书
16页	597K
描述
High-Efficiency Synchronous Step-up DC/DC Converter with Selectable Current Limit

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SS6612COTR 数据手册

SS6612

High-Efficiency Synchronous Step-up DC/DC

Converter with Selectable Current Limit

DESCRIPTION

FEATURES

High efficiency (93% with VIN=2.4V, VOUT= 3.3V,

I_OUT=200mA)

Output current up to 500mA. (VIN=2.4V, at

_OUT=3.3V, CLSEL=OUT)

The SS6612 is a high-efficiency step-up

DC/DC converter, with a start-up voltage as low

as 0.8V, and an operating voltage down to 0.7V.

Consuming only 20µA of quiescent current,

this device includes a built-in synchronous rec-

tifier that reduces size and cost by eliminating

the need for an external Schottky diode, and

improves overall efficiency by minimizing

losses.

Quiescent supply current of 20mA

Power-saving shutdown mode (0.1µA typical).

Internal synchronous rectifier (no external diode

required).

Selectable current limit for reduced ripple.

Low-noise, anti-ringing feature.

On-chip low-battery detector.

Low-battery hysteresis.

The switching frequency can range up to

500KHz depending on the load and input volt-

age. The output voltage can be easily set; by

two external resistors for 1.8V to 5.5V; con-

necting FB to OUT to get 3.3V; or connecting

to GND to get 5.0V. For additional design flexibil-

ity, the peak current of the internal switch is

selectable (0.65A or 1.0A). The SS6612 also

features a circuit that eliminates noise caused

by inductor ringing.

Space-saving package: MSOP-10

APPLICATIONS

Palmtop & Notebook Computers.

ꢀ

PDAs

ꢀ

Wireless Phones

ꢀ

Pocket Organizers.

ꢀ

Digital Cameras.

ꢀ

Hand-Held Devices with 1 to 3 Cells of

NiMH/NiCd Batteries.

TYPICAL APPLICATION CIRCUIT

47µF

200Ω

22µH

BATT

OFF

SHDN

Output 3.3V, 5.0V

or Adj. (1.8V to

Selectable Current Limit

(1.0A or 0.65A)

OUT

CLSEL

5.5V) up to 300mA

47µF

SS6612

LBI

LBO

Low Battery

Detection

Low-battery

Detect Out

REF

GND FB

0.1µF

Rev.2.02 12/06/2003

www.SiliconStandard.com

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