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车规 ET8132
General Description
The ET8132 is a highly integrated, wide input voltage, 3A output synchronous buck convertor.
The device is optimized to operate with minimum external component counts and also optimized to achieve low standby current.
This convertor adopts adaptive constant-on-time (ACOT) structure, and provides a fast transient response. It also supports both low-equivalent series resistance (ESR) output capacitors and ultra-low ESR ceramic capacitors with no external compensation components.
During light load operation, ET8132 operates in pulse frequency modulation (PFM) mode, which maintains high efficiency.
ET8132 is available in a SOT23-6 package.
Features
3A Converters Integrated 63mΩ and 36mΩ FET
ACOT mode control with fast transient response
Input Voltage Range: 4.5 V to 17 V
Output Voltage Range: 0.765 V to 7 V
PFM mode during light load operation
1MHz Switching Frequency
Low Shutdown Current Less than 5 µA
Start-up from Pre-Biased Output Voltage
Cycle-by-Cycle Over-current Limit
Hiccup-mode Over-current Protection
Non-Latch UVP and TSD Protections
Fixed Soft Start: 1.0ms
Applications
Digital TV Power Supply and Surveillance
Disc Players
Networking Home Terminal
Digital Set Top Box
Pin Configuration
Block Diagram
Application Circuits
