HM3420B
HM3420B is N-Channel Enhancement Mode Power MOSFET manufactured by H&M Semiconductor.
Features
- 1.5MHz Constant Frequency Operation
- No Schottky Diode Required
- Low Dropout Operation:100% Duty Cycle
- PFM Mode for High Efficiency in Light Load
- Over temperature Protected
- Low Quiescent Current: 40μA
- Short Circuit Protection
- Inrush Current Limit and Soft Start
- SOT23
-5 package
Applications
- Cellular and Smart Phones
- Wireless and DSL Modems
- PDAs
- Portable Instruments
- Digital Still and Video Cameras
- PC Cards
+03420B
- General Description
The HM3420B is a high-efficiency monolithic synchronous buck regulator using a constant frequency, current mode architecture. The device is available in an adjustable version. Supply current with no load is 40u A and drops to <1u A in shutdown. The 2.5V to 5.5V input voltage range makes the HM3420B ideally suited for single Li- Ion battery powered applications. 100% duty cycle provides low dropout operation, extending battery life in portable systems. PWM/PFM mode operation...
