MP7200 42V, 1.2A Buck-Boost or 3A Buck Synchronous LED Driver DESCRIPTION FEATURES The MP7200 is a high-frequency, constant- Wide 6V to 42V Operating Input Range current, buck-boost LED driver with integrated 44m/40m Low R Internal Power DS(ON) power MOSFETs. It offers a very compact MOSFETs solution to achieve up to 1.2A of continuous High-Efficiency Synchronous Mode output current, with excellent load and line Operation regulation across a wide input supply range. The Configurable 1.2A Buck-Boost or 3A Buck MP7200 can also be configured to buck mode to Mode provide up to 3A of constant load current. Configurable LED Current without Current- Sense Resistor Constant frequency hysteretic control mode Default 2.3MHz Switching Frequency for provides extremely fast transient response Buck Mode and 1.15MHz Switching without loop compensation. The switching Frequency for Buck-Boost Mode with frequency goes up to a fixed 2.3MHz in buck Spread Spectrum mode to reduce the current ripple and improve PWM Dimming (Dimming Frequency from EMI, and down to 1.15MHz in buck-boost mode to optimize efficiency and thermal performance. 100Hz to 2kHz) Internal 500Hz Two-Step Dimming with Full protection features include over-current Configurable Duty Cycle protection (OCP), output over-voltage (OV) and Fault Indication for LED Short (to GND and under-voltage (UV), thermal derating (TD), and Battery) and Open, Output Over-Voltage, thermal shutdown (TSD). The fault indicator and Thermal Shutdown outputs an active logic low signal if a fault Over-Current Protection (OCP) with Latch- condition occurs. Off Mode The MP7200 requires a minimal number of Configurable Thermal Derating via NTC readily available, standard external components, Remote Temperature Sense and is available in a space-saving QFN-19 EMI Reduction Technique (3mmx4mm) package. Available in a QFN-19 (3mmx4mm) Package with Wettable Flanks APPLICATIONS Turn Indicator Lights Daytime Running Lights (DRLs) Fog Lights Rear Lights All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive. For MPS green status, please visit the MPS website under Quality Assurance. MPS, the MPS logo, and Simple, Easy Solutions are trademarks of Monolithic Power Systems, Inc. or its subsidiaries. MP7200 Rev. 1.0 www.MonolithicPower.com 1 1/21/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2021 MPS. All Rights Reserved. MP7200 42V, 1.2A, BUCK-BOOST OR 3A BUCK SYNCHRONOUS LED DRIVER TYPICAL APPLICATIONS IN BST VIN MP7200 INGND SW EN/DIM EN/DIM IREF FAULT ISET DUTY VCC NTC AGND PGND Figure 1: Buck-Boost Topology (9.09k RIREF) VIN BST IN MP7200 SW LED+ EN/DIM EN/DIM VCC IREF ISET FAULT LED- INGND DUTY AGND PGND NTC Figure 2: Buck Topology (14.7k RIREF) MP7200 Rev. 1.0 www.MonolithicPower.com 2 1/21/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2021 MPS. All Rights Reserved.