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DATA SHEET
LM25141-Q1 2.2-MHz, 42-V Synchronous Buck Controller With Low IQ
1 Features
- AEC-Q100 Qualified for Automotive Applications:
- Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature
- Device HBM ESD Classification Level 2
- Device CDM ESD Classification Level C4B
- VIN 3.8 V to 42 V (47 V Absolute Maximum)
- Output: Fixed 3.3 V, 5 V, or Adjustable From
1.5 V to 15 V With ±0.8% Accuracy
- Optional Frequency Shift by Varying an Analog Voltage or RT Resistor
- Meets CISPR 25 / EN 55025 EMI Standards
- Fixed 2.2-MHz or 440-kHz Switching Frequency With ±5% Accuracy
- High-Side and Low-Side Gate Drive With Slew Rate Control
- Optional Spread Spectrum
- Optional Synchronization to an External Clock
- Shutdown Mode IQ: 10 µA Typical
- Low Standby Mode IQ: 35 µA Typical
- 75-mV Current Limit Threshold With ±0.9% Accuracy
- External Resistor or DCR Current Sensing
- Output Enable Logic Input
- Hiccup Mode for Sustained Overload
- Power-Good Indication Output
- Selectable Diode Emulation or Forced PWM
- VQFN-24 Package With Wettable Flanks
- Create a Custom Design Using the LM25141-Q1 With the WEBENCH® Power Designer
2 Applications
- Automotive Applications Including:
- Infotainment Systems
- Instrumentation Clusters
- Advanced Driver Assistance Systems (ADAS)
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