G5728 致新代理商 GMT DC-DC系列 同步降压转换器 G5728TO1U
| Part Number | Vin (V)min. | Vin (V) max. | IOUT (A) | FSW (k Hz) | FB (V) | Dmax (%) | IQ(uA) | Note | Package |
| G5728 | 2.5 | 6 | 1 | 1,000 | 0.6 | 100 | 50 | EN, GND, LX, VIN, VFB, SS=0.6ms | T/SOT-23-5 |
1MHz 1A Synchronous Step-Down Regulator
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, ex-tending 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 Op-eration
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
Instruments
Ordering Information
| ORDER NUMBER | MARKING | OUTPUT VOLTAGE | TEMP.RANGE | PACKAGE (Green) |
| G5728TO1U | 5728x | Ajustable | ~40℃±85℃ | TSOT-23-5 |
| G5728T11U | 5728x | Ajustable | ~40℃±85℃ | SOT-23-5 |
Pin Configuration Typical Application Circuit
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