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车规 ET8131AM
General Description
The ET8131AM 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, ET8131AM operates in pulse frequency modulation (PFM) mode, which maintains high efficiency.
ET8131AM operates over an ambient temperature range of -40°C to +125°C.
Features
3A Converters Integrated 90mΩ and 50mΩ FET
ACOT mode control with fast transient response
Input Voltage Range: 4.5 V to 17 V
Output Voltage Range: 0.76 V to 7 V
PFM mode during light load operation
580KHz 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
Automotive AEC-Q100 Grade 1 Qualified
Applications
Car Players Power Supply
Car Networking Terminal Power Supply
Pin Configuration
Block Diagram
Application Circuits
