Datasheet > SS6638-33CXTR

SS6638-33CXTR

更新时间： 2024-11-26 05:40:07

品牌	Logo	应用领域
SSC		/
页数	文件大小	规格书
16页	187K
描述
Switching Regulator/Controller

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SS6638-33CXTR 数据手册

SS6638

1-Cell, 3-Pin, Step-Up DC/DC Converter

FEATURES

GENERAL DESCRIPTION

Guaranteed start-up from less than 0.9 V.

The SS6638 is a high efficiency step-up DC/DC

converter for applications using 1 to 4 NiMH battery cells.

Three external components are required to deliver a

fixed output voltage of 2.7, 3.0V, 3.3V, or 5V. The

SS6638 starts up from less than 0.9V input with 1mA

load. The Pulse Frequency Modulation scheme offers

optimized performance for applications with light output

loading and low input voltages. The output ripple and

noise are lower than with circuits operating in PSM

mode.

High efficiency.

Low quiescent current.

Fewer external components needed.

Low ripple and low noise.

Fixed output voltage: 2.7, 3.0V, 3.3V, and 5V.

Space-saving package: SOT-89 and TO-92.

APPLICATIONS

Pagers.

The PFM control circuit operating up to 100 KHz

switching rate results in smaller passive components.

The space-saving SOT-89 and TO-92 packages make

the SS6638 an ideal choice of DC/DC converter for

space-conscious applications, such as pagers,

electronic cameras, and wireless microphones.

Cameras.

Wireless Microphones.

Pocket Organizers.

Battery Backup Suppliers.

Portable Instruments.

TYPICAL APPLICATION CIRCUIT

V_IN

V_OUT

GS SS12

100mH

SS6638-27

SS6638-30

SS6638-33

SS6638-50

47mF

22mF

VOUT

GND

One Cell Step-Up DC/DC Converter

Rev.2.01 6/26/2003

www.SiliconStandard.com

1 of 16

12 3 4 5 6 7...16

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