Texas Instruments LM5190-Q1

Description

The LM5190-Q1 is an 80V, ultra-low IQ, synchronous buck DC/DC controller with Constant-Current Constant-Voltage (CC-CV) regulation. The controller uses a peak current-mode control architecture for easy loop compensation, fast transient response, and excellent load and line regulation. The integrated CC-CV operation features a high accuracy for the regulation of both voltage (± 1%) and current (± 4.5%) . The CC-CV operation also provides seamless transition between constant-current and constantvoltage mode. The CC-CV operation effectively reduces the bill of materials (BOM) count and cost for applications that require average output current control. The output current limit is programmable and can be dynamically changed. The LM5190-Q1 has an output current monitor.

Features

• AEC-Q100 qualified for automotive applications:– Device temperature grade 1: –40°C to +125°Cambient operating temperature
• Wide input voltage operating range: 5V to 80V
• Adjustable output voltage from 0.8V to 80V, orfixed output of 5V or 12V
• Constant-Current Constant-Voltage (CC-CV)operation– Current regulation accuracy: ± 4.5%– 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 typicalsleep mode IQ
• Standard-level MOSFET driver
• Power-good output voltage status indicator(PGOOD)
• Programmable switching frequency from 100kHzto 2.2MHz
• Optional external clock synchronization
• Selectable dual random spread spectrum (DRSS)feature for enhanced EMI performance across lowand high-frequency bands
• Internal slope compensation and internal bootstrapdiode
• Dual-input VCC regulator to reduce powerdissipation (BIAS)

Typical applications

• USB power delivery
• Server battery-backup unit (BBU)
• E-bikes
• Power tools
• Energy storage system and solar energy
• Super capacitor energy backup

More information

• Datasheet
• IC product information