RT9261-36CX Richtek Technology Corporation, RT9261-36CX Datasheet

RT9261-36CX

Manufacturer Part Number

RT9261-36CX

Description

Manufacturer

Richtek Technology Corporation

Datasheet

1.RT9261-36CX.pdf (14 pages)

Specifications of RT9261-36CX

Date_code

2009+

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Part Number:

RT9261-36CX

Manufacturer:

RICHTEK/立錡

Quantity:

20 000

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General Description

The RT9261 Series are VFM Step-up DC/DC ICs

with ultra low supply current by CMOS process and

suitable for use with battery-powered instruments.

The RT9261 IC consists of an oscillator, a VFM

control circuit, a driver transistor (LX switch), a

reference voltage unit, an error amplifier, resistors for

voltage detection, and a LX switch protection circuit.

A low ripple and high efficiency step-up DC/DC

converter can be constructed of this RT9261 IC with

only three external components.

The RT9261A IC provides with a drive pin (EXT) for

an external transistor, so that a power transistor can

be externally applied. Therefore, the RT9261A IC is

recommended for applications where large currents

are required. CE pin enables circuit to set the

standby supply current at a maximum of 0.5µA.

Ordering Information

RT9261A-

DS9261/A-03 January 2002

Operating temperature range

C: Commercial standard

Output voltage

15 : 1.5V

16 : 1.6V

49 : 4.9V

50 : 5.0V

A : Use external switch

Package type

B : SOT-25

X : SOT-89

Use internal switch

Preliminary

VFM Step-up DC/DC Converter

Features

Applications

Pin Configurations

RT9261-

(Plastic SOT-89)

RT9261A-

(Plastic SOT-89)

RT9261-

(Plastic SOT-25)

RT9261A-

(Plastic SOT-25)

Part Number

Power source for battery-powered equipment

Power source for cameras, camcorders, VCRs,

PDAs, pagers, electronic data banks, and hand-

held communication equipment

Power source for applications, which require

higher voltage than that of batteries used in the

appliances

Minimal Number of External Components ( Only

an inductor, a diode, and a capacitor)

Ultra Low Input Current ( 5µ µ µ µ A at Switch Off)

± ± ± ± 2% High Output Voltage Accuracy

Low Ripple and Low Noise

Low Start-up Voltage, 0.85V at 1mA

75% Efficiency with Low Cost Inductor

+50 ppm/° ° ° ° C Low Temperature-Drift

SOT-89 and SOT-25 Small Packages

Pin Configurations

RT9261/A

www.richtek-ic.com.tw

1. GND

2. VOUT (TAB)

3. LX

1. GND

2. VOUT (TAB)

3. EXT

1. CE

2. VOUT

3. NC

4. GND

5. LX

TOP VIEW

1. CE

2. VOUT

3. NC

4. GND

5. EXT

TOP VIEW

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