器件名称: CDRH3D16
功能描述: Dual 1.2MHz, 800mA Synchronous Step-Down Converter
文件大小: 298.01KB 共8页
简 介:TM
MP2109
Dual 1.2MHz, 800mA Synchronous Step-Down Converter
The Future of Analog IC Technology
TM
DESCRIPTION
The MP2109 contains two independent 1.2MHz constant frequency, current mode, PWM step-down converters. Each converter integrates a main switch and a synchronous rectifier for high efficiency without an external Schottky diode. The MP2109 is ideal for powering portable equipment that runs from a single cell Lithium-Ion (Li+) battery. Each converter can supply 800mA of load current from a 2.5V to 6V input voltage. The output voltage can be regulated as low as 0.6V. The MP2109 can also run at 100% duty cycle for low dropout applications.
FEATURES
Up to 95% Efficiency 1.2MHz Constant Switching Frequency 800mA Load Current on Each Channel 2.5V to 6V Input Voltage Range Output Voltage as Low as 0.6V 100% Duty Cycle in Dropout Current Mode Control Short Circuit Protection Thermal Fault Protection <0.1A Shutdown Current Internally Compensated Space Saving 10-Pin QFN Package Cellular and Smart Phones Microprocessors and DSP Core Supplies PDAs MP3 Players Digital Still and Video Cameras Portable Instruments
EVALUATION BOARD REFERENCE
Board Number EV2109DQ-00A Dimensions 1.5”X x 1.0”Y x 0.5”Z
APPLICATIONS
“MPS” and “The Future of Analog IC Technology” are Trademarks of Monolithic Power Systems, Inc.
TYPICAL APPLICATION
VIN1/IN2 2.5V to 6V
8 IN1 3 IN2 EN2 6
100 95
OFF ON
OFF ON
1
EN1
90
EFFICIENCY (%)
85 80 75 70 65 60 55 50 0
VOUT=3.3V
VOUT1 1……
