MP28160GC-Z

MP28160 5.5V/0.5A High-Efficiency Integrated Buck-Boost Converter with 3.3V Fixed Output in 1.4x1.8mm CSP Package DESCRIPTION FEATURES The MP28160 is an integrated buck-boost converter in a small CSP package. The buckboost converter can operate from an input voltage above, equal to, or below the output voltage. It uses current mode control with a 1.8MHz fixed PWM frequency to optimize stability and transient response. In a light load condition, it enters auto PFM/PWM mode to get high light load efficiency. Integrated MOSFETs minimize the solution size while maintaining high efficiency.             Fault protection includes output hiccup current limiting, OVP, and thermal shutdown. The MP28160 is available in a tiny CSP-12 (1.4mmx1.8mm) package. 2.5V to 5.5V Input Voltage Range 1.8MHz Switching Frequency for CCM 3.3V Fixed Output Voltage 500mA Continuous Output Current 1ms Soft-Start Time Auto PFM/PWM Mode Output Over-Voltage Protection Hiccup Over-Current Protection 1µA Shutdown Current Active Low System EN Pin Over-Temperature Shutdown Available in a Wafer Level Chip Scale Packaging: CSP-12(1.4mmx1.8mm) APPLICATIONS    USB-C Cable Thunderbolt Portable Devices All MPS parts are lead-free, halogen free, and adhere to the RoHS directive. For MPS green status, please visit MPS website under Quality Assurance. “MPS” and “The Future of Analog IC Technology” are Registered Trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION L1 1µH SW1 95 OUT C1B 0.1µF C2A 22µF MP28160 EN VCC NC RSV AGND GND MP28160 Rev.1.0 2/19/2019 100 VOUT 3.3V/0.5A SW2 IN C1A 10µF Efficiency vs. Load Current C3 1µF C2B 22µF 90 EFFICIENCY (%) VIN 2.5V-5.5V 85 80 75 Vin=5V 70 Vin=3.3V 65 Vin=2.7V 60 0.001 0.01 0.1 LOAD CURRENT (A) www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2019 MPS. All Rights Reserved. 1 1 MP28160 – 5.5V/500mA/3.3V FIXED OUTPUT, INTEGRATED BUCK-BOOST ORDERING INFORMATION Part Number* MP28160GC Package CSP-12(1.4mmx1.8mm) Top Marking See Below * For Tape & Reel, add suffix –Z (e.g. MP28160GC–Z) TOP MARKING JL: Product code of MP28160GC Y: Year code LLL: Lot number PACKAGE REFERENCE TOP VIEW 1 2 3 A IN IN SW 1 B IN AG ND GN D C VC C EN SW 2 D NC RSV OU T CSP-12 (1.4mmx1.8mm) MP28160 Rev.1.0 2/19/2019 www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2019 MPS. All Rights Reserved. 2 MP28160 – 5.5V/500mA/3.3V FIXED OUTPUT, INTEGRATED BUCK-BOOST PIN FUNCTIONS CSP-12 Pin # Name A1, B1, A2 IN A3 SW1 B2 AGND B3 GND C1 VCC C2 EN C3 SW2 D1 D2 D3 NC RSV OUT MP28160 Rev.1.0 2/19/2019 Description The buck-boost input pin. The MP28160 operates from a 2.5V to 5.5V VIN voltage. Place a 10µF or larger capacitor for decoupling. Switch1. The first half-bridge switch node is connected to SW1. Connect an inductor between SW1 and SW2. Analog ground. Connect it to GND. Power ground. Reference ground of the regulated output voltage. GND requires extra care during PCB layout. Connect to GND with copper traces and vias. Internal 5V LDO regulator output. Decouple with a 1µF capacitor. On/off control for entire chip. EN is active low. Drive EN high to turn off the chip; drive EN low, or float, to turn on the device. It has internal 600kΩ pulldown resistor to ground. Switch2. The internal second half-bridge switch node is connected to SW2. Connect an inductor between SW1 and SW2. No connection. Reserved pin. RSV must be left floating or shorted to GND. Output pin. www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2019 MPS. All Rights Reserved. 3 MP28160 – 5.5V/500mA/3.3V FIXED OUTPUT, INTEGRATED BUCK-BOOST ABSOLUTE MAXIMUM RATINGS (1) Thermal Resistance (4) Supply Voltage (VIN)........................-0.3V to +6V VSW1..................................................................... –0.3V (-5V for