Datasheet > LM2622_15

LM2622_15

更新时间： 2024-11-27 01:17:11

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描述
LM2622 600kHz/1.3MHz Step-up PWM DC/DC Converter

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LM2622_15 数据手册

LM2622

www.ti.com

SNVS068E –MAY 2000–REVISED MARCH 2013

LM2622 600kHz/1.3MHz Step-up PWM DC/DC Converter

Check for Samples: LM2622

FEATURES

DESCRIPTION

The LM2622 is a step-up DC/DC converter with a

1.6A, 0.2Ω internal switch and pin selectable

operating frequency. With the ability to convert 3.3V

to multiple outputs of 8V, -8V, and 23V, the LM2622

is an ideal part for biasing TFT displays. The LM2622

can be operated at switching frequencies of 600kHz

and 1.3MHz allowing for easy filtering and low noise.

An external compensation pin gives the user flexibility

in setting frequency compensation, which makes

possible the use of small, low ESR ceramic

capacitors at the output. The LM2622 is available in a

low profile 8-lead VSSOP package.

•

1.6A, 0.2Ω, Internal Switch

Operating Voltage as Low as 2.0V

600kHz/1.3MHz Pin Selectable Frequency

Operation

•

Over Temperature Protection

8-Lead VSSOP Package

APPLICATIONS

•

TFT Bias Supplies

Handheld Devices

Portable Applications

GSM/CDMA Phones

Digital Cameras

Typical Application Circuit

2.7V - 3.3V

10uH

V_IN

FSLCT

R_FB!

40.2k

LM2622

Battery or

Power

SHDN

V_C

GND

C_IN

Source

22UF

R_C

24k

R_FB2

7.5k

C_OUT

22uF

C_C

2.2nF

Figure 1. 600 kHz Operation

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

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