Datasheet > AS1301_1

AS1301_1

更新时间： 2022-12-20 06:17:00

品牌	Logo	应用领域
艾迈斯 - AMSCO		转换器升压转换器
页数	文件大小	规格书
16页	1029K
描述
5V/50mA Low Noise Inductorless Boost Converter

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Data Sheet

AS1301

5V/50mA Low Noise Inductorless Boost Converter

1 General Description

2 Key Features

ꢀ Up to 92% Efficiency

The AS1301 is a 50mA inductorless boost converter

using a double H-bridge charge-pump topology with two

external flying capacitors.

ꢀ 2.7 to 5.25V Input Voltage

ꢀ Regulated 5V Output

The AS1301 runs on a 1MHz fixed frequency and is

utilized with a low noise regulation scheme to allow

usage together with sensitive RF circuitry from the same

battery supply.

ꢀ Automatic Mode Up-Switching

ꢀ <5µA Shutdown Current

ꢀ 5V Tolerant Enable Signal

ꢀ Up to 50mA Load Current

ꢀ Overload Protection

Designed to reside in portable and space limited

equipment the 1MHz charge pump converts a 2.7 to

5.25V input to regulated 5V output with 5% accuracy.

ꢀ Output Disconnected During Shutdown

ꢀ Soft-Start

The shutdown function reduces the supply current to

<5µA and disconnects the load from the output. The

integrated soft-start circuitry prevents current spikes

being drawn from the battery during start-up.

ꢀ No Inductor Required

ꢀ Small External Components Required

(COUT ≤2.2µF, CFLY ≤220nF)

The AS1301 is available in TDFN (3x3x0.8mm) 10-pin

and WL-CSP 8-bumps packages.

ꢀ Low Noise Fixed Frequency 1MHz Charge Pump:

- 1:1 Battery Feed Through Mode

- 2:3 Single Phase Mode

- 1:2 Dual Phase Mode

ꢀ Package Options:

- TDFN (3x3x0.8mm) 10-pin

- WL-CSP 8-bumps with 0.5mm pitch

3 Applications

The device is ideal for two or three AA cells or a single

Li-Ion battery cell to 5V conversion, mobile phones,

portable instruments, microprocessor based systems

and remote data-acquisition systems.

Figure 1. Typical Application Diagram

C_FLY1

C1+

C_FLY2

C2+

C2-

C1-

VOUT = 5V

VBATT

VOUT

GND

C_BAT

C_OUT

2.2µF

AS1301

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