MP7230

42V, 1.2A, Synchronous Buck-Boost or 3A Buck Infrared LED Driver

Description

The MP7230 is a fixed-frequency, constant-current, buck-boost LED driver with integrated power MOSFETs. The device offers a compact solution that can achieve up to 1.2A of continuous output current (I_OUT) across a wide input voltage (V_IN) supply range, with excellent load and line regulation. The MP7230 can also be configured to buck mode to provide up to 3A of constant load current.

The MP7230 can support pulse-width modulation (PWM) dimming frequencies as low as 10Hz to adjust infrared radiation (IR) in LED driver applications. It is also compatible with 30FPS, 60FPS, and 120FPS dimming. Constant frequency hysteretic control mode provides extremely fast transient response without loop compensation.

Full protection features include over-current protection (OCP), thermal derating, and thermal shutdown (TSD). The MP7230 requires a minimal number of readily available, standard external components, and is available in a space-saving QFN-19 (3mmx4mm) package.

Features & Benefits

Built for a Wide Range of Infrared Radiation (IR) LED Applications:
- Wide 6V to 42V Operating Input Voltage (V_IN) Range
- 10Hz to 2kHz Pulse-Width Modulation (PWM) Dimming Frequency
- Compatible with 30FPS, 60FPS, and 120FPS Dimming
High Performance for Improved Thermals:
- Configurable LED Current without Sensing Resistor
- 44mΩ/40mΩ Low R_DS(ON) Internal Power MOSFETs
- High-Efficiency Synchronous Mode
Optimized for EMC/EMI Reduction:
- 410kHz Default Switching Frequency (f_SW) with Frequency Spread Spectrum (FSS)
- EMI Reduction Technique
Full Protection Features:
- LED Short to Ground Protection
- LED Short to Battery Protection
- LED Open Protection
- Output Over-Voltage Protection (OVP) with Fault Indication
- Over-Current Protection (OCP) with Latch-Off Mode
- Configurable Thermal Derating via NTC Remote Temperature Sense
- Thermal Shutdown
Additional Features:
- Configurable 1.2A Current in Buck-Boost Mode or 3A in Buck Mode
- 5% LED Current Accuracy with 700mA to 1.2A in Buck-Boost Mode or 1A to 2A in Buck Mode
- Available in a QFN-19 (3mmx4mm) Package
- Available in a Wettable Flank Package