Datasheet > AS1312-BTDT-33

AS1312-BTDT-33

更新时间： 2022-05-10 13:28:46

品牌	Logo	应用领域
艾迈斯 - AMSCO		/
页数	文件大小	规格书
20页	577K
描述
Ul t ra Low Quiescent Cur rent , Hysteret ic DC-DC Step-Up Conver ter

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AS1312-BTDT-33 数据手册

AS1312

Ultra Low Quiescent Current, Hysteretic DC-DC Step- Up Converter

1 General Description

The AS1312 is an ultra low IQ hysteretic step-up DC-DC converter.

2 Key Features

ꢀ

Input voltage range: 0.7V to 5.0V

Fixed output voltage range: 2.5V to 5.0V

Peak output current: 200mA

The AS1312 achieves an efficiency of up to 94% and is designed to

operate from a +0.7V to +5.0V supply, the output voltage is fixed in

50mV steps from +2.5V to 5.0V.

Quiescent current: 1µA

In order to save power the AS1312 features a shutdown mode,

where it draws less than 100nA. In shutdown mode the battery is not

connected to the output.

Shutdown current: < 100nA

Up to 94% efficiency

If the input voltage exceeds the output voltage the device is in a

feedthrough mode and the input is directly connected to the output

voltage.

Output disconnect in shutdown

Feedthrough mode when VIN > VOUT

Adjustable low battery detection or Power-OK output selectable

No external diode or transistor required

Over temperature protection

In light load operation, the device enters a sleep mode when most of

the internal operating blocks are turned off in order to save power.

This mode is active approximately 50µs after a current pulse

provided that the output is in regulation.

Packages:

The AS1312 also offers an adjustable low battery detection. If the

battery voltage decreases below a threshold defined by two external

resistors on pin LBI, the LBO output is pulled to logic low. LBO is

working as Power-OK when LBI is connected to GND.

- 8-pin (2x2) TDFN

- 8-pin WL-CSP with 0.4mm pitch

The AS1312 is available in a 8-pin (2x2) TDFN and a 0.4mm pitch 8-

pin WL-CSP package.

3 Applications

The AS1312 is an ideal solution for handheld devices and battery

powered products.

Figure 1. AS1312 - Typical Application Diagram

L1 = 6.8µH

0.7V to 5.0V

Low Battery Detect

VIN

LBI

LBO

C1 = 22µF

OUT

2.5V to 5.0V

AS1312

VOUT

REF

C2 = 10µF

Off

REF = 100nF

GND

www.ams.com/DC-DC_Step-Up

Revision 1.12

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