MP8860 2.8 - 22V V , 1A I , 4-Switch, IN OUT Integrated Buck-Boost Converter 2 with I C Interface DESCRIPTION FEATURES Wide 2.8V to 22V Operating Input Voltage The MP8860 is a synchronous, 4-switch, Range integrated buck-boost converter capable of (1) 1V to 20.47V Output Voltage Range (5V regulating the output voltage from a 2.8V to 22V 2 Default) with 10mV Resolution through I C wide input voltage range with high efficiency. 1A Output Current or 4A Input Current The MP8860 uses constant-on-time (COT) Four Low R Internal Buck Power DS(ON) control in buck mode and constant-off-time MOSFETs control in boost mode, providing fast load Adjustable Accurate CC Output Current transient response and smooth buck-boost 2 Limit with Internal Sensing MOSFET via I C mode transient. The MP8860 provides auto 500kHz Switching Frequency PFM/PWM or forced PWM switching modes, Output Over-Voltage Protection (OVP) and programmable output constant current (CC) Hiccup current limit, which supports flexible design for Output Short-Circuit Protection (SCP) with different applications. Hiccup Full protection features include over-current Over-Temperature Warning and Shutdown protection (OCP), over-voltage protection 2 I C Interface with ALT Pin (OVP), under-voltage protection (UVP), 2 Four Programmable I C Addresses programmable soft start, and thermal shutdown. One-Time Programmable (OTP) Non- The MP8860 is available in a 16-pin QFN Volatile Memory 2 (3mmx3mm) package. I C Programmable Line Drop Compensation, PFM/PWM Mode, Soft Start, OCP, etc. EN Shutdown Discharge Programmable Available in a QFN-16 (3mmx3mm) Package APPLICATIONS Power Supply for Motor Buck-Boost Bus Supplies Industrial Systems Personal Medical Products DSLR Cameras 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 registered trademarks of Monolithic Power Systems, Inc. or its subsidiaries. NOTE: 1) For V < 3V applications, the switching frequency decreases. OUT MP8860 Rev 1.0 www.MonolithicPower.com 1 5/28/2019 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2019 MPS. All Rights Reserved. 2 MP8860 22V V , 1A I , INTEGRATED BUCK-BOOST WITH I C INTERFACE IN OUT TYPICAL APPLICATION C4 100nF Efficiency vs. Output Current VIN = 12V, VOUT = 5 - 20V, L = 4.7H, L1 4.7H VIN DCR = 19.5m, Forced PWM Mode 12V BST1 SW1 IN C5 100nF 100 + BST2 C1 C1A 100F 22F 95 SW2 R3 499k VOUT OUT 90 EN + C2 C2A C7 MP8860 10Fx2 100F 85 VCC 22nF R4 80 499k ADD ALT 75 R5 SCL VCC I2C slave Vout=5V 301k C3 SDA Vout=9V 1F 70 OC AGND GND Vout=12V 65 Vout=20V C6 R1 60 22nF 21.5k 0.01 0.1 1 OUTPUT CURRENT (A) MP8860 Rev 1.0 www.MonolithicPower.com 2 5/28/2019 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2019 MPS. All Rights Reserved. EFFICIENCY (%)