Datasheet > ELM92

ELM92

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
14页	1089K
描述
600kHz High output current PWM step-up DC/DC converter

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数据手册

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ELM92 数据手册

ELM92xxxx _{CMOS 600kHz High output current PWM step-up DC/DC converter}

http://www.elm-tech.com

■General description

ELM92xxxx is CMOS PWM step-up DC/DC converter which consists of reference voltage source, error

amplifier, oscillation circuit, start-up circuit, output voltage setting resistor, LX transistor and switching current

limiter. For external parts, coil, diode and capacitor are possible choices; with external parts, ELM92 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; ELM92 series can also be designed as semi-custom IC within the range of 2.5V to 5.5V by 0.1V

step. Meanwhile, 600kHz high frequency PWM control scheme makes it easy to design DC/DC converter which

can generate large output current with high stability and small ripples by only using small external inductor.

With newly developed intermittent operation control scheme, ELM92 series is able to work with high efficiency

under wide range of load conditions.

■Features

■Application

• Output voltage range : 2.5V to 5.5V (by 0.1V)

• Low voltage operation : Vin≥0.9V

• Oscillating frequency : Typ.600kHz

• Output current(e.g.) : 250mA(Vin=1.5V, Vout=3.0V)

• CE(Chip-enable pin) available

• Constant voltage source for

battery-operated devices

• Constant voltage source for PDAs,

cameras, portable communications

equipments and videos

: Max.0.5μA(ELM92xx2x Iss at shutdown)

: Typ.85%

• Switching current limiter

• Local regulator

• High efficiency

• Package

: SOT-89, SOT-89-5

■Maximum absolute ratings

Parameter

Apply voltage to LX pin

Apply voltage to VOUT pin

Apply voltage to CE pin

Symbol

Vlx

Vout

Vce

Limit

Unit

Vss-0.3 to 8.0

500 (SOT-89)

500 (SOT-89-5)

-40 to +85

Power dissipation

Operating temperature

Storage temperature

Top

Tstg

°C

-55 to +125

■Selection guide

ELM92xxxx-x

Symbol

e.g. :

a, b

Output voltage

27: Vout=2.7V

33: Vout=3.3V

30: Vout=3.0V

50: Vout=5.0V

ELM92 x x x x - x

1: No CE type (SOT-89)

2: CE type (SOT-89-5)

B: SOT-89, SOT-89-5

S: Refer to PKG file

N: Refer to PKG file

↑ ↑ ↑ ↑

↑

CE selection

Package

a b c d

Taping direction

Rev.1.0

14 - 1

12 3 4 5 6 7...14

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与ELM92相关器件

型号	品牌	描述	获取价格	数据表
ELM92271B-N	ELM-TECH	CMOS 600kHz High output current PWM step-up DC/DC converter	获取价格
ELM92271B-S	ELM-TECH	CMOS 600kHz High output current PWM step-up DC/DC converter	获取价格
ELM92271C-N	ELM-TECH	CMOS 600kHz High output current PWM step-up DC/DC converter	获取价格
ELM92271C-S	ELM-TECH	CMOS 600kHz High output current PWM step-up DC/DC converter	获取价格
ELM92272B-N	ELM-TECH	CMOS 600kHz High output current PWM step-up DC/DC converter	获取价格
ELM92272B-S	ELM-TECH	CMOS 600kHz High output current PWM step-up DC/DC converter	获取价格