MIC23158YML-T5 Microchip

MIC23158/9 3 MHz PWM Dual 2A Buck Regulator with HyperLight Load and Power Good Features General Description 2.7V to 5.5V Input Voltage The MIC23158/9 is a high efficiency, 3 MHz, dual, 2A synchronous buck regulator with HyperLight Load Adjustable Output Voltage (Down to 1.0V) mode, power good output indicator, and programmable Two Independent 2A Outputs soft start. Up to 94% Peak Efficiency The MIC23159 also provides an auto-discharge 83% Typical Efficiency at 1 mA feature that switches in a 225 pull-down circuit on its Two Independent Power Good Indicators output to discharge the output capacitor when disabled. Independent Programmable Soft-Start HyperLight Load provides very high efficiency at light 45 A Typical Quiescent Current loads and ultra-fast transient response which makes the MIC23158/9 perfectly suited for supplying 3 MHz PWM Operation in Continuous Conduction Mode processor core voltages. An additional benefit of this proprietary architecture is very low output ripple voltage Ultra-Fast Transient Response throughout the entire load range with the use of small Fully Integrated MOSFET Switches output capacitors. The 20-pin 3mm x 4mm QFN Output Pre-Bias Safe package saves precious board space and requires 0.1 A Shutdown Current seven external components for each channel. Thermal-Shutdown and Current-Limit Protection The MIC23158/9 is designed for use with a very small 20-Pin 3 mm x 4 mm QFN Package inductor, down to 0.47 H, and an output capacitor as Internal 225 Pull-Down Circuit on Output small as 2.2 F that enables a total solution size, less (MIC23159) than 1 mm in height. 40C to +125C Junction Temperature Range The MIC23158/9 has a very low quiescent current of 45A and achieves a peak efficiency of 94% in Applications continuous conduction mode. In discontinuous conduction mode, the MIC23158/9 can achieve 83% Solid State Drives (SSD) efficiency at 1 mA. Smartphones The MIC23158/9 is available in a 20-pin 3 mm x 4 mm Tablet PCs QFN package with an operating junction temperature Mobile Handsets range from 40C to +125C. Portable Devices (PMP, PND, UMPC, GPS) Package Type WiFi/WiMax/WiBro Applications MIC23158/9 20-Lead QFN (ML) (Top View) 20 19 18 17 VIN1 16 1 FB1 15 PG1 PGND1 2 14 SS1 SW1 3 13 SS2 SW2 4 12 EP PG2 PGND2 5 VIN2 6 11 FB2 78 9 10 2018 Microchip Technology Inc. DS20006020A-page 1 AVIN2 AVIN1 AGND2 AGND1 EN2 EN1 SNS2 SNS1MIC23158/9 Typical Application Circuit MIC23158/9 VIN C1 C2 4.7F/6.3V 4.7F/6.3V AVIN1 AVIN2 VIN2 VIN1 L1 1H L2 1H SW1 SW2 VOUT2 VOUT1 SNS1 SNS2 R5 R1 R3 R6 10k 301k 316k 10k FB1 FB2 C4 C3 U1 4.7F/ 4.7F/ R4 R2 6.3V MIC23158/9 6.3V 158k 221k EN1 EN1 EN2 EN2 PG1 PG2 PG2 PG1 SS1 SS2 PGND1 PGND2 C5 C6 470pF 470pF AGND1 AGND2 DS20006020A-page 2 2018 Microchip Technology Inc.