Packaging information
| Package | Pins VQFN (RGR) | 20 |
| Operating temperature range (°C) -40 to 150 |
| Package qty | Carrier 3,000 | LARGE T&R |
Features for the LM5123-Q1
- 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, or from 15 V to 57 V
- Minimum boost input 0.8 V when BIAS ≥ 3.8 V
- Bypass operation when VSUPPLY > VLOAD
- 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 ≤ 38 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
- Maximum switching frequency 2.2 MHz
- 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
- Switching frequency from 100 kHz to 2.2 MHz
- 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
- PGOOD indicator
- Integrated protection features
- Cycle-by-cycle peak current limit
- Overvoltage protection
- HB-SW short protection
- Thermal shutdown
Description for the LM5123-Q1
The LM5123-Q1 device is a wide input range synchronous boost controller that employs peak current mode control.