300 mA, Low Dropout CMOS Linear Regulator Features: Maximum output current: 300 mA Input voltage range: 2.5 V to 5.5 V Light load efficient IGND = 75 μA with 100 μA load Low shutdown current: <1 μA Very low dropout voltage: 170 mV @ 300 mA load Initial accuracy: ±1% Accuracy over line, load, and temperature: ±2% 16 fixed output voltage options with tracking: 0.75 V to 3.3 V Low output noise: 40 μV rms High PSRR: 72 dB @ 1 kHz Stable with small 2.2 μF ceramic output capacitor See data sheet for additional features

Configurable, Dual 2 A/Single 4 A, Synchronous Step-Down DC-to-DC Regulator Features: Configurable 3 A/1 A or 2 A/2 A dual output load combinations or 4 A combined single output High efficiency: up to 95% Input voltage VIN: 2.75 V to 5.5 V Selectable fixed output: 0.8 V, 1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.3 V or adjustable output voltage to 0.6 V minimum ±1.5% accuracy reference voltage Selectable fixed switching frequency: 300 kHz, 600 kHz, or 1.2 MHz Optimized gate slew rate for reduced EMI External synchronization or internal clock output Dual-phase, 180° shifted PWM channels Current mode for fast transient response, no current sense resistor required Pulse-skip under light load or forced PWM operation See data sheet for additonal features

20 V, 4 A, Synchronous Step-Down DC-to-DC Regulator Features: Input voltage: 4.5 V to 20 V Integrated MOSFET: 44 m/11.6 m Reference voltage: 0.6 V ± 1% Continuous output current: 4 A 180° out of phase clock synchronizationSynchronizes to external clock: 200 kHz to 1.4 MHz Programmable switching frequency: 200 kHz to 1.4 MHz Precision enable and power good External compensation Internal soft start with external adjustable option Startup into a precharged output Supported by ADIsimPower design tool

20 V, 6 A, Synchronous, Step-Down DC-to-DC Regulator Features: Input voltage range: 4.5 V to 20 V Integrated MOSFET: 44 mΩ typical/11 mΩ typical Reference voltage: 0.6 V ± 1% Continuous output current: 6 A Programmable current-limit thresholdProgrammable switching frequency: 200 kHz to 1400 kHz Precision enable and power good External compensation Internal soft start with external adjustable option Startup into a precharged output Supported by ADIsimPower design tool

18 V, 12 A Step-Down Regulator with Programmable Current Limit Features: Input voltage: 4.5 V to 18 V Continuous output current: 12 A Integrated MOSFETs: 17 mΩ high-side/4.5 mΩ low-side 0.6 V ± 0.5% reference voltage Programmable switching frequency range: 200 kHz to 2200 kHz Enhanced transient response Programmable current limit with ±10% accuracy Precision enable and power good External compensation and soft start Start up into a precharged output Supported by the ADIsimPower design tool

Ultralow Power Energy Harvester PMU with MPPT and Charge Management Features: Boost regulator with maximum power point tracking (MPPT) with dynamic sensing or no sensing mode Hysteresis mode for best ultralight load efficiency Operating quiescent current of SYS pin (VIN > VCBP ≥ VMINOP): 510 nA Sleeping quiescent current of SYS pin (VCBP < VMINOP): 390 nA Input voltage operating range: 0.08 V to 3.3 V Fast cold start from 380 mV (typical) with charge pump Programmable shutdown point on MINOP pin based on the input open circuit voltage (OCV) 150 mA regulated output from 1.5 V to 3.6 V Battery terminal charging threshold (2.2 V to 5.2 V) to support charging storage elements Optional BACK_UP power path management Radio frequency (RF) transmission conducive to shutting down the switcher temporarily via microcontroller unit (MCU) communication

50 mA/500 mA, High Efficiency, Ultralow Power Step-Down Regulator Features: Input start-up voltage range: 2.15 V to 6.50 V Operates down to 2.00 V voltage Ultralow 180 nA quiescent current with no load Selectable output voltage of 1.2 V to 3.6V or 0.8V to 5.0V ±1.5% output accuracy over full temperature range in PWM mode Selectable hysteresis mode or PWM operation mode Output current Up to 50 mA in hysteresis mode Up to 500 mA in PWM mode VOUTOK flag monitors the output voltage 100% duty cycle operation mode 2 MHz switching frequency with optional synchronization input from 1.5 MHz to 2.5 MHz QOD option UVLO, OCP, and TSD protection 9-ball, 1.65 mm × 1.87 mm WLCSP −40°C to +125°C junction temperature

50 mA/500 mA, High Efficiency, Ultralow Power Step-Down Regulator Features: Input start-up voltage range: 2.15 V to 6.50 V Operates down to 2.00 V voltage Ultralow 180 nA quiescent current with no load Selectable output voltage of 1.2 V to 3.6V or 0.8V to 5.0V ±1.5% output accuracy over full temperature range in PWM mode Selectable hysteresis mode or PWM operation mode Output current Up to 50 mA in hysteresis mode Up to 500 mA in PWM mode VOUTOK flag monitors the output voltage 100% duty cycle operation mode 2 MHz switching frequency with optional synchronization input from 1.5 MHz to 2.5 MHz QOD option UVLO, OCP, and TSD protection 9-ball, 1.65 mm × 1.87 mm WLCSP −40°C to +125°C junction temperature

Ultralow Power Step-Down Regulator with Input Voltage Monitor and Regulation Features: Input start-up voltage range: 2.15 V to 6.50 V  Operation down to 2.00 V  Ultralow, 260 nA quiescent current with no load Selective output voltage from 1.2 V to 3.6 V (or 0.8 V to 5.0 V) ±2.5% output accuracy over the full temperature range Selectable hysteresis or pulse-width modulation (PWM) operation mode Output current up to 50 mA in hysteresis mode VINOK flag to monitor the input voltage Ultrafast stop switching control 100% duty cycle operation mode Quick output discharge (QOD) option Undervoltage lockout (UVLO), OCP, and thermal shutdown (TSD) protection 10-lead, 3 mm × 3 mm LFCSP package −40°C to +125°C operating junction temperature range

Ultralow Power Step-Down Regulator with Input Voltage Monitor and Regulation Features: Input start-up voltage range: 2.15 V to 6.50 V  Operation down to 2.00 V  Ultralow, 260 nA quiescent current with no load Selective output voltage from 1.2 V to 3.6 V (or 0.8 V to 5.0 V) ±2.5% output accuracy over the full temperature range Selectable hysteresis or pulse-width modulation (PWM) operation mode Output current up to 50 mA in hysteresis mode VINOK flag to monitor the input voltage Ultrafast stop switching control 100% duty cycle operation mode Quick output discharge (QOD) option Undervoltage lockout (UVLO), OCP, and thermal shutdown (TSD) protection 10-lead, 3 mm × 3 mm LFCSP package −40°C to +125°C operating junction temperature range