Datasheet > ELM92272B-S

ELM92272B-S

更新时间： 2024-02-24 16:04:22

品牌	Logo	应用领域
ELM-TECH		转换器
页数	文件大小	规格书
15页	142K
描述
CMOS 600kHz High output current PWM step-up DC/DC converter

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技术参数
数据手册

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ELM92272B-S 技术参数

生命周期：	Contact Manufacturer	包装说明：	,
Reach Compliance Code：	unknown	风险等级：	5.77
Base Number Matches：	1

ELM92272B-S 数据手册

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

■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

• Output voltage range

• Low voltage operation

• Oscillating frequency

• Output current(e.g.)

: 2.5V to 5.5V (by 0.1V)

: Vin≥0.9V

: Typ.600kHz

: 250mA (When Vin=1.5V, Vout=3.0V)

• CE(Chip-enable pin) available : Max. 0.5μA (ELM92xx2x Iss at Shutdown)

• High efﬁciency

• Switching current limiter

• Package

: Typ. 85%

: SOT-89, SOT-89-5, SON-6

■Application

• Constant voltage source for battery-operated devices

• Constant voltage source for PDAs, cameras, portable communications equipments and videos

• Local regulator

■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

300 (SOT-89)

500 (SOT-89-5)

500 (SON-6)

-40 to +85

Power dissipation

Operating temperature

Storage temperature

Top

Tstg

°C

-55 to +125

15 - 1

12 3 4 5 6 7...15

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