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| 型号： | AS1340 EB |
| 厂商： | ams |
| 文件页数： | 1/17页 |
| 文件大小： | 0K |
| 描述： | EVAL BOARD FOR AS1340 DC-DC |
| 设计资源： | Design Support Tool |
| 标准包装： | 1 |
| 系列： | * |
| 其它名称： | Q6687728 |
AS1340
5 0 V, M i c r o p o w e r, D C - D C B o o s t C o n v e r t e r
1 General Description
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 voltages up to 50V output.
The output voltage can easily be adjusted by an external resistor
divider.
The AS1340 uses a unique control scheme providing the highest
efficiency over a wide range of load conditions. An internal 1.4A
MOSFET reduces external component count, and a fixed high
switching frequency (1MHz) allows for tiny surface-mount
components.
The AS1340 also features power-OK circuitry which monitors the
output voltage.
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.
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.
The device is available in a low-profile TDFN-8 3x3mm package.
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
?? High Output Currents:
- 100mA @ 12V from 3.3V V IN
- 50mA @ 24V from 3.3V V IN
- 30mA @ 36V from 3.3V V IN
?? Efficiency: Up to 93%
?? Switching Frequency: 1MHz
?? Output Disconnect
?? Power-OK Output
?? Operating Supply Current: 30μA
?? Shutdown Current: 0.1μA
?? 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
L 1
4.7μH
L 1
3
6
V IN = 2.7V to
5.5V
3
6
V OUT
V IN = 2.7V
to 5.5V
2
SWVIN
SWOUT
5
V OUT = > V IN to 50V
VCC
LX
C IN
VCC
4
AS1340
LX
8
R 1
C OUT
V IN = 2.7V to
~V OUT
L 1
On
Off
POK
1
EN
FB
7, 9
GND
R 2
V IN = 2.7V to
5.5V
VCC
3
6
LX
V OUT
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.ams.com/DC-DC_Step-Up/AS1340
Revision 1.20
1 - 17
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AS1341 | 制造商:AMSCO 制造商全称:austriamicrosystems AG 功能描述:20V, 600mA, 100% Duty Cycle, Step-Down Converter |
| AS1341 EB | 功能描述:BOARD EVAL AS1341 RoHS:否 类别:编程器，开发系统 >> 评估板 - DC/DC 与 AC/DC（离线）SMPS 系列:- 产品培训模块:Obsolescence Mitigation Program 标准包装:1 系列:True Shutdown™ 主要目的:DC/DC，步升 输出及类型:1，非隔离 功率 - 输出:- 输出电压:- 电流 - 输出:1A 输入电压:2.5 V ~ 5.5 V 稳压器拓扑结构:升压 频率 - 开关:3MHz 板类型:完全填充 已供物品:板 已用 IC / 零件:MAX8969 |
| AS1341_1 | 制造商:AMSCO 制造商全称:austriamicrosystems AG 功能描述:20V, 600mA, 100% Duty Cycle, Step-Down Converter |
| AS1341-BTDM | 功能描述:Buck Switching Regulator IC Positive Adjustable (Fixed) 1.25V (5V) 1 Output 600mA 8-WDFN Exposed Pad 制造商:ams 系列:- 包装:带卷（TR） 零件状态:有效 功能:降压 输出配置:正 拓扑:降压 输出类型:可调（固定） 输出数:1 电压 - 输入（最小值）:4.5V 电压 - 输入（最大值）:20V 电压 - 输出（最小值/固定）:1.25V（5V） 电压 - 输出（最大值）:20V 电流 - 输出:600mA 频率 - 开关:200kHz 同步整流器:无 工作温度:-40°C ~ 85°C（TA） 安装类型:表面贴装 封装/外壳:8-WDFN 裸露焊盘 供应商器件封装:8-TDFN（3x3） 标准包装:1,000 |
| AS1341BTDT | 制造商:AMS 功能描述:IC STEP-DOWN DC/DC CONVERTER TDFN-8 制造商:AMS 功能描述:IC, STEP-DOWN DC/DC CONVERTER, TDFN-8 制造商:AMS 功能描述:IC, STEP-DOWN DC/DC CONVERTER, TDFN-8; Primary Input Voltage:12V; No. of Outputs:1; Output Voltage:20V; Output Current:600mA; No. of Pins:8; Operating Temperature Min:-40C; Operating Temperature Max:85C; Output Current Max:600mA ;RoHS Compliant: Yes |
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