2.048V, Precision Micropower, Low Dropout, Low Voltage Reference Features: Initial Accuracy: ±2 mV Max Temperature Coefficient: 5 ppm/°C Max Low Supply Current: 45 µA Max Sleep Mode: 15 µA Max Low Dropout Voltage Load Regulation: 4 ppm/mA Line Regulation: 4 ppm/V High Output Current: 30 mA Short-Circuit Protection Download REF191-EP Data Sheet (pdf) Supports defense and aerospace applications (AQEC standard) Military temperature range (−55°C to +125°C) Controlled manufacturing baseline One assembly/test site One fabrication site Product change notification Qualification data available on request

Ultralow Noise, 150 mA CMOS Linear Regulator Features: Chinese data sheet available Ultralow noise: 9 μV rms, independent of VOUT No additional noise bypass capacitor required Stable with 1 μF ceramic input and output capacitors Maximum output current: 150 mA Input voltage range: 2.2 V to 5.5 V Low quiescent current IGND = 10 μA with zero load Low shutdown current: <1 μA Low dropout voltage: 105 mV at 150 mA load Initial output voltage accuracy: ±1% Up to 14 fixed output voltage options: 1.8 V to 3.3 V PSRR performance of 70 dB at 10 kHz Current limit and thermal overload protection Logic-controlled enable 5-lead TSOT package 4-ball, 0.8 mm × 0.8 mm, 0.4 mm pitch WLCSP AEC-Q100 qualified for automotive applications

EN55022B Compliant 58V, 4A Step-Down DC/DC Module Regulator Features: Complete Low EMI Switch Mode Power Supply EN55022 Class B Compliant Wide Input Voltage Range: 3.1V to 58V Up to 4A Output Current Output Voltage Range: 0.5V ≤ VOUT ≤ 0.94 • VIN ±1.67% Total DC Output Voltage Error Over Line, Load and Temperature (–40°C to 125°C) Parallel and Current Share with Multiple LTM4653s Analog Output Current Indicator Programmable Input Voltage Limiting Constant-Frequency Current Mode Control Power Good Indicator and Programmable Soft-Start Overcurrent/Overvoltage/Overtemperature Protection 15mm × 9mm × 5.01mm BGA Package

15V, 4A Step-Up Module Regulator Features: Complete Solution in <1cm2 (Single-Sided PCB) or 0.5cm2 (Dual-Sided PCB) Input Voltage Range: 1.8V to 5.5V, Down to 0.7V After Start-Up Output Voltage Range: 2.5V to 15V 4A Switch Current Dual Phase Operation ±3% Maximum Total DC Output Voltage Regulation Over Load, Line and Temperature Output Disconnect in Shut Down Inrush Current Limit External Frequency Synchronization Selectable Burst Mode® Operation Output Overvoltage and Overtemperature Protection 6.25mm × 6.25mm × 2.42mm BGA package

Dual 50A or Single 100A Module Regulator with Digital Power System Management Features: Dual 50A or Single 100A Digitally Adjustable Outputs with Digital Interface for Control, Compensation and Monitoring Wide Input Voltage: 4.5V to 16V Output Voltage Range: 0.5V to 1.8V ~90% Full Load Efficiency from 12VIN to 1VOUT at 100A ±0.5% Maximum DC Output Error Over Temperature ±3% Current Readback Accuracy (25°C to 125°C) Integrated Input Current Sense Amplifier 400kHz PMBus-Compliant I2C Serial Interface Supports Telemetry Polling Rates Up to 125Hz Integrated 16-Bit Σ ADC Constant Frequency Current Mode Control Parallel and Current Share Multiple Modules 15mm × 22mm × 7.87mm BGA PackageReadable Data: Input and Output Voltages, Currents, and Temperatures Running Peak Values, Uptime, Faults and Warnings Internal EEPROM and Fault Logging with ECCWritable Data and Configurable Parameters: Output Voltage, Voltage Sequencing and Margining Digital Soft-Start/Stop Ramp Optimize Analog Loop Compensation OV/UV/OT, UVLO, Frequency and Phasing

POWER MANAGEMENT - DC / DC;

The ADM1186-1 and ADM1186-2 are integrated, four-channel, voltage monitoring and sequencing devices. A 2.7 V to 5.5 V power supply is required on the VCC pin for power.Four precision comparators monitor four voltage rails, with all comparators sharing a 0.6 V reference and a worst-case accuracy of 0.8%. Resistor networks that are external to the VIN1, VIN2, VIN3, and VIN4 pins set the Under Voltage (UV) trip points for the monitored supply rails.The ADM1186-1 and ADM1186-2 have four open drain enable outputs, OUTx, that are used to enable power supplies. An open drain power good output, PWRGD, is provided that indicatesthe four VINx inputs are above their UV thresholds.A state machine monitors the state of the UP and?DOWN pins on the ADM1186-1 or the UP/overbar: DOWN pin on the ADM1186-2 to control the supply sequencing direction. In the ?Wait Start?state, a rising edge transition on the UP or UP/DOWN pin triggers a power-up sequence. A falling edge transition on the DOWN or UP/DOWN pin in the ?Power Up Done? statetriggers a power down sequence.During a power up sequence, the state machine enables each power supply in turn. The supply output voltage is monitored to determine if it rises above the UV threshold level within a userdefined duration called the blanking time. If a supply rises above the UV threshold then the next enable output in the sequence is turned on. In addition to the blanking time a user may also define sequencing time delays between each enable output turning on. When all four enable outputs are on, and the four VINx pins are above their UV trip points the power up sequence is complete. The ADM1186-1 provides an open drain pin, SEQ_DONE, that is asserted high to provide an indication that an up sequence is complete. The SEQ_DONE pins is allows multiple cascadedADM1186-1 devices to be perform controlled power up and down sequences. During a power down sequence the enable outputs turn off inreverse order. The sequence time delays between successive supplies the same as during the power up sequence, and no blanking time is used during a power down sequence. At the end of a down sequence the SEQ_DONE pin is brought low. During sequencing and when powered up, the state machine continuously monitors for any fault conditions. Faults include a UV condition on any of the inputs, or an unexpected controlinput. Any fault that occurs causes the state machine to enter a fault handler. This immediately turns off all enable outputs, and ensures that the device is ready to start a new up sequence. The ADM1186-1 has a bi-directional open drain pin, FAULT, that facilitates fault handling when using multiple devices. An ADM1186-1 experiencing a fault condition drives the FAULT pin low, causing other connected ADM1186-1devices to enter their own fault handling state.The ADM1186-1 is available in a 20-lead QSOP package andthe ADM1186-2 is available in a 16-lead QSOP package.

Dual 5V, 2A Synchronous Step-Down DC/DCs in Tiny LQFN and WLCSP Features: Dual Outputs Each with 2A Output Current High Efficiency: 19mΩ NMOS and 75mΩ PMOS Wide Bandwidth, Fast Transient Response Switching Frequency Synchronizable Up to 3MHz VIN Range: 2.25V to 5.5V VOUT Range: 0.5V to VIN VOUT Accuracy: ±1% Low Ripple Burst Mode® Operation Peak Current Mode Control Minimum On-Time: 25ns Safely Tolerates Inductor Saturation in Overload Shutdown Current: 1.2µA Precision 400mV Enable Thresholds Internal Soft-Start and Compensation Power Good Output Low Profile, Thermally Enhanced 12-Lead 2mm × 2mm × 0.74mm LQFN and 16-Ball 1.64mm × 1.64mm × 0.5mm WLCSP Packages AEC-Q100 Qualified for Automotive Applications

Voltage References

Supervisory Circuits Watchdog Supervisor with MR. IC.