Datasheet > AS1340_1

AS1340_1

更新时间： 2024-09-24 06:37:39

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	1437K
描述
50V, Micropower, DC-DC Boost Converter

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AS1340_1 数据手册

Datasheet

AS1340

50V, Micropower, DC-DC Boost Converter

1 General Description

2 Key Features

ꢀ

2.7V to 50V Adjustable Output Voltage

2.7V to 50V Input Voltage Range

2.7V to 5.5V Supply Voltage Range

The AS1340 boost converter contains a 1.4A internal

switch in a tiny TDFN-8 3x3mm package. The device

operates from a 2.7 to 5.5V supply, and can boost volt-

ages up to 50V output.

The output voltage can easily be adjusted by an external

resistor divider.

High Output Currents:

The AS1340 uses a unique control scheme providing

the highest efficiency over a wide range of load condi-

tions. An internal 1.4A MOSFET reduces external com-

ponent count, and a fixed high switching frequency

(1MHz) allows for tiny surface-mount components.

- 100mA @ 12V from 3.3V VIN

- 50mA @ 24V from 3.3V VIN

- 30mA @ 36V from 3.3V VIN

ꢀ

Efficiency: Up to 93%

The AS1340 also features power-OK circuitry which

monitors the output voltage.

Switching Frequency: 1MHz

Output Disconnect

Additionally the AS1340 features a low quiescent supply

current and a shutdown mode to save power. During

shutdown an output disconnect switch separates the

input from the output.

Power-OK Output

The AS1340 is ideal for LCD or OLED panels with low

current requirements and can also be used in a wide

range of other applications.

Operating Supply Current: 30µA

Shutdown Current: 0.1µA

TDFN-8 3x3mm Package

The device is available in a low-profile TDFN-8 3x3mm

package.

3 Applications

The device is ideal for OLED display power supply, LED

power supply, LCD bias generators, mobile/cordless

phones, palmtop computers, PDAs and organizers,

handy terminals or any other portable, battery-powered

device.

Figure 1. AS1340 - Typical Application Diagram

4.7µH

VIN = 2.7V

to 5.5V

VOUT

SWVIN

SWOUT

VCC

VIN = 2.7V

to 5.5V

VOUT = > VIN to 50V

VCC

CIN

COUT

VIN = 2.7V

to ~VOUT

AS1340

POK

VIN = 2.7V

to 5.5V

VOUT

7, 9

Off

VCC

GND

If not needed the output disconnect switch can be left unconnected which will also increase the efficiency.

Additionally the supply of the chip can be split to allow higher supply voltages for the coil. In this case the output disconnect switch must not be used.

www.austriamicrosystems.com

Revision 1.10

1 - 16

12 3 4 5 6 7...16

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与AS1340_1相关器件

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AS1340A-BTDT-10	AMSCO	获取价格	50V, Micropower, DC-DC Boost Converter
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AS1341_1	AMSCO	获取价格	20V, 600mA, 100% Duty Cycle, Step-Down Converter
AS1341_13	AMSCO	获取价格	650mA, Ul t ra low Ripple Step Down DC/DC Conver ter
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AS1341-BTDT-1K	AMSCO	获取价格	650mA, Ul t ra low Ripple Step Down DC/DC Conver ter
AS1341-BTDT-6K	AMSCO	获取价格	650mA, Ul t ra low Ripple Step Down DC/DC Conver ter
AS1343	AMSCO	获取价格	42V, 1-2 Cells, Micropower, DC-DC Boost Converter
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