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产品名称：LM3668
产品封装：LLP-12
产品品牌：National Semiconductor
库 存：查看
电 话：0755-83035811
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产品介绍
LM3668Features
45µA typical quiescent current
For 2.8V/3.3V and 3.0/3.4V versions:
- 1A maximum load current for VIN = 2.8V to 5.5V
- 800mA maximum load current for VIN = 2.7V
- 600mA maximum load current for VIN = 2.5V
For 4.5/5V
- 1A maximum load current for VIN = 3.9V to 5.5V
- 800mA maximum load current for VIN = 3.4V to 3.8V
- 700mA maximum load current for VIN = 3.0V to 3.3V
- 600mA maximum load current for VIN = 2.7V to 2.9V
2.2MHz PWM fixed switching frequency (typ.)
Automatic PFM-PWM Mode or Forced PWM Mode
Wide Input Voltage Range: 2.5V to 5.5V
Internal synchronous rectification for high efficiency
Internal soft start: 600µs Maximum startup time after VIN settled
0.01µA typical shutdown current
Current overload and Thermal shutdown protection
Frequency Sync Pin: 1.6MHz to 2.7MHz
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