Data Sheet
LM5190 80V, Synchronous, Buck Controller With Constant-Current and Constant-Voltage Regulation
1 Features
- Functional Safety-Capable
- Wide input voltage operating range: 5V to 80V
- Adjustable output voltage from 0.8V to 79V, or fixed output of 5V or 12V
- Constant-Current Constant-Voltage
(CC-CV) operation
- Current regulation accuracy: ±3%
- Voltage regulation accuracy: ±1%
- Current monitoring and constant
current features
- Analog voltage proportional to output current (IMON)
- Programmable average output current limit (ILIM)
- Dynamic average output current limit (ISET)
- 2.3µA typical shutdown mode IQ and 15µA typical sleep mode IQ
- Standard-level MOSFET gate drivers
- Power-good status indicator (PGOOD)
- Programmable switching frequency from 100kHz to 2.2MHz
- Optional external clock synchronization
- Selectable dual random spread spectrum (DRSS) feature for enhanced EMI performance across low and high-frequency bands
- Internal slope compensation and bootstrap diode
- Dual-input VCC regulator to reduce power dissipation (BIAS)
Typical Application Schematic