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DATA SHEET
LM5152x-Q1 Automotive Low-IQ Synchronous Boost Controller for Start-Stop/Backup Battery Power Supply
1 Features
- AEC-Q100 qualified for automotive
applications
- Temperature grade 1: –40°C to +125°C, TA
- Functional Safety-Capable
- Suited for wide operating range automotive battery
powered applications
- 3.8-V to 42-V input operating range
- Dynamically programmable VOUT from 5 V to 20
V (protection up to 57 V)
- Minimum boost input 0.8 V when BIAS ≥ 3.8 V
- Bypass operation when VSUPPLY >
VLOAD
(LM5152 only, see the device comparison table)
- Minimized battery drain
- Shutdown current ≤ 3 μA
- Automatic mode transition
- Battery drain in deep sleep ≤ 11 μA (bypass operation,
charge pump off)
- Battery drain in deep sleep ≤ 33 μA (bypass operation,
charge pump on)
- BIAS IQ in sleep ≤ 13 μA (skip mode)
- Strong 5-V MOSFET drivers
- Small solution size and low cost
- 2.2-MHz maximum switching frequency
- Internal boot diode
- Constant peak current limit over VIN
- Supports DCR inductor current sensing
- QFN-20 with wettable flanks
- Avoid AM band interference and crosstalk
- Optional clock synchronization
- 100-kHz to 2.2-MHz switching frequency
- Selectable switching mode (FPWM, diode emulation, skip
mode)
- EMI mitigation
- Optional programmable spread spectrum
- Lead-less package
- Programmability and flexibility
- Dynamic VOUT tracking
- Dynamic switching frequency programming
- Programmable line UVLO
- Adjustable soft start
- Adaptive dead time
- Boost STATUS
indicator
- Integrated protection features
- Cycle-by-cycle peak current limit
- Overvoltage protection
- HB-SW short protection
- Thermal shutdown
