SS6621

更新时间： 2024-11-25 06:13:59

品牌	Logo	应用领域
SSC		转换器二极管超快恢复二极管快速恢复二极管
页数	文件大小	规格书
12页	630K
描述
High Efficiency Synchronous Step-Up DC/DC Converter

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SS6621 数据手册

SS6620/21/2

High Efficiency Synchronous Step-Up DC/DC Converter

DESCRIPTION

FEATURES

High efficiency of 93% (V_IN=2.4V, V_OUT=3.3V,

The SS6620/21/22 are high-efficiency step-

up DC/DC converters, with start-up voltage as

low as 0.8V and operating with an input voltage

down to 0.7V. Consuming only 20mA of quies-

cent current, these devices offer a built-in syn-

chronous rectifier that reduces size and cost by

eliminating the need for an external Schottky

diode, improving overall efficiency by minimiz-

ing losses.

I_OUT=200mA).

Quiescent supply current of 20mA.

Power-saving shutdown mode (0.1mA typical).

Internal synchronous rectifier (no external diode )

Selectable current limit for reduced ripple

(SS6622).

Low noise, anti-ringing feature (SS6622)

On-chip low-battery detector.

Low-battery hysteresis

The switching frequency depends on the load

and the input voltage and can range up to

500KHz. The peak current of the internal switch

is fixed at 0.8A (SS6620), at 0.45A

(SS6621), or is selectable (SS6622) for

APPLICATIONS

Palmtop & notebook computers.

PDAs

Wireless phones

Pocket organizers.

Cameras.

design flexibility. Ripple does not exceed the

product of the switch current limit and the filter

capacitor equivalent-series-resistance (ESR).

The SS6622 also features a circuit that

eliminates noise caused by inductor ringing.

1 to 2-cell hand-held devices

TYPICAL APPLICATION CIRCUIT

100mF

22mH

Output 3.3V, or

Adj. (1.8V to 4.0V)

up to 300mA

OFF

SHDN

SS6620

OUT

220mF

SS6621

SS6622

Low-Battery

Detect In

LBI

Low-Battery

Detect Out

LBO

REF

0.1mF

FB GND

LBO

Rev.2.01 6/06/2003

www.SiliconStandard.com

1 of 12

12 3 4 5 6 7...12

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与SS6621相关器件

型号	品牌	获取价格	描述	数据表
SS6621COTR	SSC	获取价格	High Efficiency Synchronous Step-Up DC/DC Converter
SS6621U	SENSITRON	获取价格	Rectifier Diode, 1 Phase, 1 Element, 1.2A, Silicon, HERMETIC SEALED, GLASS, 106, 2 PIN
SS6621US	SENSITRON	获取价格	Rectifier Diode, 1 Phase, 1 Element, 1.2A, 400V V(RRM), Silicon, HERMETIC SEALED, GLASS, M
SS6622	SSC	获取价格	High Efficiency Synchronous Step-Up DC/DC Converter
SS6622COTR	SSC	获取价格	High Efficiency Synchronous Step-Up DC/DC Converter
SS6622U	SENSITRON	获取价格	Rectifier Diode, 1 Phase, 1 Element, 1.2A, Silicon, HERMETIC SEALED, GLASS, 106, 2 PIN
SS6622US	SENSITRON	获取价格	Rectifier Diode, 1 Phase, 1 Element, 1.2A, 600V V(RRM), Silicon, HERMETIC SEALED, GLASS, M
SS6625	SENSITRON	获取价格	Rectifier Diode, 1 Phase, 1 Element, 1.5A, 1000V V(RRM), Silicon, 106, 2 PIN
SS6625U	SENSITRON	获取价格	Rectifier Diode, 1 Phase, 1 Element, 1A, Silicon, HERMETIC SEALED, GLASS, 106, 2 PIN
SS6625US	SENSITRON	获取价格	Rectifier Diode, 1 Phase, 1 Element, 1A, 1000V V(RRM), Silicon, HERMETIC SEALED, GLASS, ME