Datasheet > ELM9433B-S

ELM9433B-S

更新时间： 2024-11-09 06:56:39

品牌	Logo	应用领域
ELM-TECH		转换器
页数	文件大小	规格书
6页	77K
描述
CMOS PFM step-up DC/DC converter

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中文翻译

获取价格

数据手册

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ELM9433B-S 数据手册

CMOS PFM step-up DC/DC converter

ELM94xxB

■General description

ELM94xxB 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, ELM94 series is able to

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

5.0V; ELM94 series can also be designed as semi-custom IC within the range of 2.5V to 5.5V by 0.1V step.

■Features

■Application

• Output voltage range

• Low voltage operation

• Low power operation

• High efﬁciency

: 2.5V to 5.5V (by 0.1V)

: Vin≥0.98V (RL=30kΩ)

: 12μW (Typ. ELM9430B)

: Typ. 80%

• Constant voltage source for battery-

operated devices

• Constant voltage source for cameras

• Portable communication equipments

• Local regulator

• High output voltage accuracy : 2.5%

• Output current(e.g.)

• Package

: 20mA (When Vin=1.5V, Vout=3.0V)

: SOT-89

■Maximum absolute ratings

Parameter

Apply voltage to LX pin

Apply voltage to VOUT pin

Output current of LX pin

Power dissipation

Symbol

Vlx

Vout

Ilx

Top

Limit

200

300

-40 to +85

-55 to +125

Unit

°C

Operating temperature

Storage temperature

Tstg

°C

■Selection guide

ELM94xxB-x

Symbol

e.g. :

a, b

Output voltage

27: Vout=2.7V 30: Vout=3.0V

33: Vout=3.3V 50: Vout=5.0V

S : Refer to PKG file

N: Refer to PKG file

ELM94 x x B - x

↑ ↑ ↑ ↑

a b c

Product version

Taping direction

■Pin configuration

SOT-89 (TOP VIEW)

Pin No.

Pin name

VSS

VOUT

6 - 1

12 3 4 5 6

中文翻译

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