A7121A中文资料PDF规格书
A7121A规格书详情
DESCRIPTION
The A7121A is a high efficiency synchronous step-down DC-DC converter. Its input voltage range is from 2.7V to 6V and provides an adjustable regulated output voltage from 0.6V to 3.4V while delivering up to 2A of output current.
The current mode architecture of A7121A operation with internal compensation allows the transient response to be optimized over a wide range of loads and output capacitors.
The very low supply current with no load is 60uA and even drops to <1uA in shutdown. The 2.7V to 6.0V input voltage range makes the A7121A ideally designed for single Li-Ion, two to four AA battery-powered applications. It’s 100 duty cycle provides low dropout operation to extend battery life in portable systems.
The PWM pulse skipping mode of A7121A, 1MHz internal switching frequency, allows very small inductors and capacitors and provides very low output ripple voltage for noise sensitive applications.
The A7121A is available in SOT-25 and SOT-26 packages.
FEATURES
High Efficiency: Up to 97
Vin Range from 2.7V to 6V
Output Voltage as Low as 0.6V , V REF =0.6V
1MHz Constant Switching Frequency
2.0A Output Current at V IN =3V
Quiescent Current: 60μA (input <
Slope Compensated Current Mode Control for
Excellent Line and Load Transient Response
Robust protection features, OCP, SCP, TSD
100 Duty Cycle in Dropout
Shutdown Current <1uA
Internal Soft start Circuitry
Available in SOT 2 5 and SOT 26 p ackag e s
APPLICATION
Set Top Box , Cable Modem, xDSL Platforms
LCD TV Power Supply & Metering Platforms
General Purpose Point of Load (POL)
Portable Instruments , Notebook Computer
Battery Powered Equipment
Wireless Access Point Router
Microprocessors and DSP Core Supplies
Digital Still and Video Cameras
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
AIT |
21+ |
DFN10 |
1000 |
优势代理渠道,原装正品,可全系列订货开增值税票 |
询价 | ||
AIT |
新年份 |
DFN10 |
69850 |
一级代理原装正品现货,支持实单! |
询价 | ||
AIT |
12+ |
NA |
880000 |
明嘉莱只做原装正品现货 |
询价 | ||
AIT |
21+ |
DFN10 |
1000 |
原装现货假一赔十 |
询价 | ||
AIT |
22+ |
DFN10 |
6852 |
只做原装正品现货!或订货假一赔十! |
询价 | ||
AIT |
22+23+ |
DFN10 |
77832 |
绝对原装正品现货,全新深圳原装进口现货 |
询价 | ||
AMICCOM/笙科 |
2023+ |
QFN32 |
80000 |
一级代理/分销渠道价格优势 十年芯程一路只做原装正品 |
询价 | ||
AIT |
23+ |
DFN |
999999 |
原装正品现货量大可订货 |
询价 | ||
AMICCOM/笙科 |
21+ |
QFN32 |
35200 |
一级代理/放心采购 |
询价 | ||
N/A |
2022 |
QFP/44 |
2058 |
原厂原装正品,价格超越代理 |
询价 |