600 mA, Ultralow Noise, High PSRR, RF Linear Regulator Features: Input voltage range: 2.3 V to 5.5 V Output voltage range: 1.2 V to 3.4 V Maximum load current: 600 mA Low noise 0.9 μV rms total integrated noise from 100 Hz to 100 kHz 1.6 μV rms total integrated noise from 10 Hz to 100 kHz Noise spectral density: 1.5 nV/√Hz from 10 kHz to 1 MHz PSRR: >90 dB from 200 Hz to 200 kHz; 57 dB at 1 MHz Dropout voltage: 120 mV typical at VOUT = 3.3 V, IOUT = 600 mA Initial accuracy: ±0.5% Accuracy over line, load, and temperature: −2.0% (minimum), +1.5% (maximum) Quiescent current, IGND = 4 mA at no load Low shutdown current: 0.2 μA Stable with a 10 μF ceramic output capacitor 8-lead LFCSP and 8-lead SOIC packages Precision enable Supported by ADIsimPower tool

Supervisory Circuit with Manual Reset, Active-Low and Active-High Push-Pull Reset Outputs Features: 27 reset threshold options 2.5 V to 5 V in 100 mV increments 4 reset timeout options 1 ms, 20 ms, 140 ms, and 1120 ms (minimum) 4 watchdog timeout options 6.3 ms, 102 ms, 1.6 sec, and 25.6 sec (typical) Manual reset input Multiple reset output options Low power consumption Specified over wide temperature range (−40°C to +125°C) Qualified for automotive applications 5-lead SOT-23 package

Switching Voltage Regulators 3A Fixed CL Boost 0.65/1.3MHz

Dual, 300 mA Fixed Output, Low Noise, High PSRR Voltage Regulator Features: Input voltage range: 2.5 V to 5.5 V Small, 8-lead, 2 mm x 2 mm LFCSP package Initial accuracy: ±1% High PSRR: 70 dB at 10 kHz, 60 dB at 100 kHz, 40 dB at 1 MHz Low noise: 27 μV rms at VOUT = 1.2 V, 50 μV rms at VOUT = 2.8 V Excellent transient response Low dropout voltage: 170 mV at 300 mA load 65 μA typical ground current at no load, both LDOs enabled Overcurrent and thermal protection

20 V, 500 mA, Low Noise LDO Regulator with Soft Start Features: Input voltage range: 3.3 V to 20 V Maximum output current: 500 mA Low noise: 15 μV rms for fixed output versions PSRR performance of 60 dB at 10 kHz, VOUT = 3.3 V Reverse current protection Low dropout voltage: 350 mV at 500 mA Initial accuracy: ±0.8% Accuracy over line, load, and temperature −2% to +1%, TJ = −40°C to +125°C −1.25% to +1%, TJ = 0°C to +85°C Low quiescent current: 900 μA at VIN = 10 V, IOUT = 500 mA Low shutdown current: <50 μA at VIN = 12 V, stable with small 1 μF ceramic output capacitor 3 fixed output voltage options: 1.8, 3.3 V and 5 V Adjustable output from 1.22 V to 19 V Programmable soft start for inrush current control Foldback current-limit and thermal overload protection User programmable precision UVLO/enable Power-good indicator 8-lead LFCSP and 8-lead SOIC packages

Supervisory Circuit with Watchdog, Manual Reset, and Active-Low/High Push-Pull Features: 26 reset threshold options 2.5 V to 5 V in 100 mV increments 4 reset timeout options 1 ms, 20 ms, 140 ms, and 1120 ms (minimum) 4 watchdog timeout options 6.3 ms, 102 ms, 1600 ms, and 25.6 sec (typical) Manual reset input Reset output stages Push-pull active low Open-drain active low Push-pull active high Low power consumption: 5 μA Guaranteed reset output valid to VCC = 1 V Power supply glitch immunity Specified over industrial temperature range 5-lead SOT-23 package

DC / DC CONTROLLERS

Open-Drain Microprocessor Supervisory Circuit in 4-Lead SOT-143 Features: Specified over temperature Low power consumption (5 μA typical) Precision voltage monitor of voltages from 2.5 V to 5 V at 100 mV increments Reset assertion down to VCC > 1 V Reset timeout periods: 1 ms, 20 ms, 140 ms, or 1120 ms (minimum) Built-in manual reset Pin compatible with the ADM811 Available in SOT-143 package

MAX809 3PIN MICROPROCESSOR RESET CIRCUIT;

20 V, 6 A Synchronous Step-Down Regulator with Low-Side Driver Features: Input voltage: 4.5 V to 20 V Integrated 44 m high-side MOSFET 0.6 V ±1% reference voltage over temperature Continuous output current: 6 A Programmable switching frequency: 250 kHz to 1.4 MHz Synchronizes to external clock: 250 kHz to 1.4 MHz 180° out-of-phase synchronization Programmable UVLO Power-good output External compensation Internal soft start with external adjustable option Startup into a precharged output Supported by ADIsimPower design tool