台湾致新 G5728TO1U TSOT-23-5 代理商主推
General Description
The G5728 is a high efficiency monolithic synchronous
buck regulator using a constant frequency, current
mode architecture. Supply current during operation is
only 50μA and drops to <1μA in shutdown. The 2.5V
to 6V input voltage range makes the G5728 ideally
suited for single Li-Ion battery-powered applications.
100% duty cycle provides low dropout operation, extending
battery run time in portable systems. Switching
frequency is internally set at 1MHz, allowing the use of
small surface mount inductors and capacitors. The
internal synchronous switch increase efficiency and
eliminates the need for an external Schottky diode.
Built-in soft start function eliminates in-rush current
that could damage the system.
Features
High Efficiency: Up to 93%
Low Quiescent Current: Only 50μA During Operation
Internal Soft Start Function
1A Output Current
2.5V to 6V Input Voltage Range
1MHz Switching Frequency
No Schottky Diode Required
100% Duty Cycle in Dropout Operation
0.6V Reference Allows Low Output Voltages
<1μA Shutdown Current
Current Mode Operation for Excellent Line and
Load Transient Response
Over Temperature Protected
RoHS Compliant
Applications
Cellular Telephones
Personal Information Appliances
Microprocessors and DSP Core Supplies
Wireless and DSL Modems
Digital Still and Video Cameras
MP3 Players
Portable Instrument |
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