Datasheet > ELM93

ELM93

更新时间： 2022-02-26 13:18:01

品牌	Logo	应用领域
ELM-TECH		/
页数	文件大小	规格书
8页	1037K
描述
High efficiency PFM step-up DC/DC converter

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数据手册

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ELM93 数据手册

CMOS High efficiency PFM step-up DC/DC converter

ELM93xxxB

http://www.elm-tech.com

■General description

ELM93xxxB is CMOS step-up DC/DC converter which consists of reference voltage source, error amplifier,

oscillation circuit, start-up circuit, PFM control circuit, switching transistor and output voltage setting resistor.

For external parts, coil, diode and capacitor are possible choices; with external parts, ELM93 series is able to

acquire constant output voltage higher than input voltage. The standard output voltages are 2.7V, 3.0V, and 3.3V;

ELM93 series can also be designed as semi-custom IC within the range of 1.8V to 3.8V by 0.1V step.

■Features

■Application

• Output voltage range

• Low voltage operation

• Low power operation

• High efficiency

: 1.8V to 3.8V (by 0.1V)

: Vin≥0.9V(RL=30kΩ)

: Typ.24μW(ELM9330xB)

: Typ.85%

• Constant voltage source for battery-

operated devices

• Constant voltage source for cameras

• Portable communications equipments

• Local regulator

• High output voltage accuracy : ±2.5%

• Output current (e.g.)

• Package

: 40mA(Vin=1.5V, Vout=3.0V)

: SOT-89, SOT-23

■Maximum absolute ratings

Parameter

Apply voltage to LX pin

Apply voltage to VOUT pin

Output current of LX pin

Symbol

Vlx

Vout

Ilx

Limit

Unit

200

500 (SOT-89)

250 (SOT-23)

-40 to +85

-55 to +125

Power dissipation

Operating temperature

Storage temperature

Top

Tstg

°C

■Selection guide

ELM93xxxB-x

Symbol

e.g. :

27: Vout=2.7V

30: Vout=3.0V

33: Vout=3.3V

a, b

Output voltage

ELM93 x x x B - x

↑ ↑ ↑ ↑ ↑

A: SOT-89

B: SOT-23

S: Refer to PKG file

N: Refer to PKG file

a b c d e

Package

Product version

Taping direction

Rev.1.0

8 - 1

12 3 4 5 6 7 8

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与ELM93相关器件

型号	品牌	描述	获取价格	数据表
ELM9327AB-N	ELM-TECH	CMOS High efficiency PFM step-up DC/DC converter	获取价格
ELM9327AB-S	ELM-TECH	CMOS High efficiency PFM step-up DC/DC converter	获取价格
ELM9327BB-N	ELM-TECH	CMOS High efficiency PFM step-up DC/DC converter	获取价格
ELM9327BB-S	ELM-TECH	CMOS High efficiency PFM step-up DC/DC converter	获取价格
ELM9330AB-N	ELM-TECH	CMOS High efficiency PFM step-up DC/DC converter	获取价格
ELM9330AB-S	ELM-TECH	CMOS High efficiency PFM step-up DC/DC converter	获取价格