Supervisory Circuits Low-Cost, uP Supervisory Circuits

Supervisory Circuits 3.3V 1.3uA N-Ch Open

Supervisory Circuits VOLTAGE DETECTOR

6.5 V, 1 A, Ultralow Noise, High PSRR, Fast Transient Response CMOS LDO Features: Input voltage range: 2.3 V to 6.5 V Maximum load current: 1 A Low noise: 5 μV rms independent of output voltage at 100 Hz to 100 kHz Fast transient response: 1.5 μs for 1 mA to 500 mA load step 60 dB PSRR at 100 kHz Low dropout voltage: 42 mV at 500 mA load, VOUT = 3 V Initial accuracy: −0.5% (minimum), +1% (maximum) Accuracy over line, load, and temperature: ±1.5% Quiescent current, IGND = 0.7 mA with no load Low shutdown current: 0.25 μA at VIN = 5 V Stable with small 4.7 μF ceramic output capacitor Adjustable and fixed output voltage options: 1.2 V to 5.0 V Adjustable output from 1.2 V to VIN − VDO Precision enable Adjustable soft start 8-lead, 3 mm × 3 mm LFCSP package Supported by ADIsimPower tool

Ultracompact, 1 A Thermoelectric Cooler (TEC) Driver for Digital Control Systems Features: Patented high efficiency single inductor architecture Integrated low RDSON MOSFETs for TEC driver TEC voltage and current operation monitoring No external sense resistor required Programmable maximum TEC voltage External synchronization  Independent TEC heating and cooling current limit settings 2 MHz PWM switching frequency Digital thermal control loop compatible 2.50 V reference output with 1% accuracy Available in a 25-ball, 2.5 mm x 2.5 mm WLCSP or in a 24-lead, 4 mm x 4 mm LFCSP

Dual Monolithic Buck Regulator with Power-On Reset and Watchdog Timer Features: High Voltage Buck Regulator: 4V to 42V Operating Range 1.3A Output Current Input Transient Protection to 55V Low Voltage Synchronous Buck Regulator: 2.5V to 5.5V Input Voltage Range 1.1A Output Current Synchronizable, Adjustable 350kHz to 2.5MHz Switching Frequency Programmable Power-On Reset Timer Programmable Window Mode Watchdog Timer Typical Quiescent Current: 290μA Short-Circuit Robust Programmable Soft-Start Low Shutdown Current: IQ < 1μA Thermal Shutdown Available in Thermally Enhanced 28-Lead (4mm × 5mm) QFN and 28-Lead TSSOP Packages

36V 500mA Step-Down Regulator and 200mA LDO Features: Wide Input Range: Operation from 3.6V to 36V Overvoltage Lockout Protects Circuit Through 55V Transients on Input 500mA Output Current Switching Regulator High Switching Frequency: 750kHz 200mA Low Dropout Linear Regulator 1.2V to 16V Input; 0.8V to 8V Output 310mV Dropout Voltage VCC2 to OUT2 Precision Programmable Undervoltage Lockout Short-Circuit Robust Internal Soft-Start <2μA Shutdown Current Small Thermally Enhanced 16-Lead (3mm × 3mm) QFN and 12-Lead MSE Packages

1.2A Step-Down Switching Regulator with Output Current Limit Features: Wide Input Range: Operation from 7.5V to 36V Overvoltage Lockout Protects Circuit through 60V Transients Programmable Output Current Limit (0.4A to 1.2A) 3.3V and 5V Fixed Output Voltage Options Integrated Boost Diode Fixed Frequency, Peak Current Mode Control LT3663 fSW = 1.5MHz LT3663-X fSW = 1MHZ Low Switch VCESAT: 275mV at 1A Internally Compensated Thermal Protection Thermally Enhanced 8-Pin 2mm × 3mm DFN and

1.2A Step-Down Switching Regulator with Output Current Limit Features: Wide Input Range: Operation from 7.5V to 36V Overvoltage Lockout Protects Circuit through 60V Transients Programmable Output Current Limit (0.4A to 1.2A) 3.3V and 5V Fixed Output Voltage Options Integrated Boost Diode Fixed Frequency, Peak Current Mode Control LT3663 fSW = 1.5MHz LT3663-X fSW = 1MHZ Low Switch VCESAT: 275mV at 1A Internally Compensated Thermal Protection Thermally Enhanced 8-Pin 2mm × 3mm DFN and

1.2A Step-Down Switching Regulator with Output Current Limit Features: Wide Input Range: Operation from 7.5V to 36V Overvoltage Lockout Protects Circuit through 60V Transients Programmable Output Current Limit (0.4A to 1.2A) 3.3V and 5V Fixed Output Voltage Options Integrated Boost Diode Fixed Frequency, Peak Current Mode Control LT3663 fSW = 1.5MHz LT3663-X fSW = 1MHZ Low Switch VCESAT: 275mV at 1A Internally Compensated Thermal Protection Thermally Enhanced 8-Pin 2mm × 3mm DFN and