MP2109双路独立的1.5MHZ恒定频率、电流模脉宽调制（PWM）架构的降压型变换器。每一路变换器都集成了一个主开关管和同步整流管以提高效率，无需外部肖特基二极管。MP2109是单节锂电池供电应用的理想选择。当输入电压范围在2.5V～5.5V时，每路变换器可以提供800mA的电流，输出电压可调节低至0.6V。MP2109可以在100%的占空比下低压降工作。

 

The MP2109 contains two independent 1.2MHz constant frequency, current mode, PWM step down converters. MP2109 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.

 

• 【MP2109 】Up to 95% Efficiency
• 【MP2109 】1.2MHz Constant Switching Frequency
• 【MP2109 】800mA Load Current on Each Channel
• 【MP2109 】2.5V to 6V Input Voltage Range
• 【MP2109 】Output Voltage as Low as 0.6V
• 【MP2109 】100% Duty Cycle in Dropout
• 【MP2109 】Current Mode Control
• 【MP2109 】Short Circuit Protection
• 【MP2109 】Thermal Fault Protection
• <0.1μA Shutdown Current
•【MP2109 】 Internally Compensated
• 【MP2109 】Space Saving 10-Pin QFN Package

 

 

 

 

 

Vin (Min) (V)	2.5
Vin (Max) (V)	6
lout (Max) (A)	0.8 (2x)
Isw Typ (A)	1.3
Iq (Typ) (mA)	0.4
Vfb (V)	0.6
Freq 1 (kHz)	1240
Freq 2 (kHz)
Soft Start	-
Package 1	QFN10