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DATA SHEET
LM5143-Q1 Automotive 3.5-V to 65-V Dual 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
- Functional Safety-Capable
- Versatile synchronous buck DC/DC controller
- Wide input voltage range of 3.5 V to 65 V
- 1% accurate, fixed 3.3-V, 5-V, or adjustable
outputs from 0.6 V to 55 V
- 150°C maximum junction temperature
- Shutdown mode current: 4 µA typical
- No-load standby current: 15 µA typical
- Two interleaved synchronous buck channels
- Dual-channel or single-output multiphase
- 65-ns tON(min) for high VIN/VOUT ratio
- 60-ns tOFF(min) for low dropout
- Inherent protection features for robust design
- Hiccup-mode overcurrent protection
- Independent ENABLE and PGOOD functions
- VCC, VDDA, and gate-drive UVLO protection
- Thermal shutdown protection with hysteresis
- Optimized for ultra-low EMI requirements
- Slew-rate controlled
adaptive gate drivers
- Spread spectrum reduces
peak emissions
- Optimized for CISPR 25 Class 5 requirements
- Switching frequency from 100 kHz to 2.2 MHz
- SYNC in and SYNC out
capability
- Selectable diode
emulation or FPWM
- VQFNP-40 pacakge with wettable flank pins
- Create a custom design using the LM5143-Q1 with WEBENCH® Power Designer
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