AP1625

更新时间： 2024-10-03 08:31:43

品牌	Logo	应用领域
易亨 - ANACHIP		控制器
页数	文件大小	规格书
5页	159K
描述
PWM/PFM Dual Mode Step-down DC/DC Controller

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AP1625 数据手册

AP1625

PWM/PFM Dual Mode Step-down DC/DC Controller

Features

General Descriptions

The AP1625 series are multi-functional step-down

DC/DC converters with built-in speed, low ON

resistance drivers. A more than 1A output current is

possible using an externally connected transistor,

coil, diode and capacitor.

- Input voltage range:2.2V~8V（V_OUTtype）

- Adjustable version（±2.5%）

- Oscillator frequency: 270KHz（±15%）

- High Efficiency: 92%（typ .）

- Stand-by capability: I_STB＝3µA.（max .）

- Soft-start time set-up externally type possible

- Output voltage type possible（FB）

- Package: SOT23-5

Output voltage is set-up by external resistor（. ±2.5%

accuracy）.

With a 270KHz switching frequency, the size of the

external components can be reduced.

Control switches from PWM to PFM during light

loads with the AP1625（PWM/PFM switchable）and

the series is highly efficient from light loads to large

output currents.

Applications

● Electronic Information Organizers

● Palmtops

In relation to soft-start time external capacitor

regulated types.

● Cellular and portable phones

● Portable Audio Systems

● Various Multi-function Power Supplies

During stand-by time （CE pin “LOW”）,current

consumption is reduced to less than 0.5µA.

With U.V.L.O internal, the external MOSFET. Will

be forcibly switched off if used below the stipulated

voltage.

Pin Assignment

Pin Descriptions

(Top View)

Pin No.

Function

Name

V _OUTExternal PMOSFET Connection

V _DDPower Supply

GND Ground

Chip Enable

Soft-start capacitor connection

FB Feedback pin

V_OUT

V_DD

GND

SOT23-5

This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of

this product. No rights under any patent accompany the sale of the product.

Rev.1.1 May.27, 2004

1/5

12 3 4 5

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