The ADM1232 is pin-compatible with the MAX1232, DS1232LP, and DS1232. The Analog Devices, Inc., ADM1232 is a micro-processor monitoring circuit that can monitor the following: Microprocessor supply voltageWhether a microprocessor has locked upExternal interruptsThe ADM1232 is available in four packages: an 8-lead MSOP (RM-8), an 8-lead PDIP (N-8), a 16-lead wide SOIC (RW-16), and an 8-lead narrow SOIC (R-8).ApplicationsMicroprocessor systemsPortable equipmentComputersControllersIntelligent instrumentsAutomotive systems

ADP7104 20 V, 500 mA, Low Noise, CMOS LDOThe ADP3334 is a member of the ADP333x family of precision low dropout anyCAP® voltage regulators. The ADP3334 operates with an input voltage range of 2.6 V to 11 V and delivers a continuous load current up to 500 mA. The novel anyCAP® architecture requires only a very small 1 µF output capacitor for stability, and the LDO is insensitive to the capacitor’s equivalent series resistance (ESR). This makes ADP3334 stable with any capacitor, including ceramic (MLCC) types for space restricted applications.

The ADP3338 is a member of the ADP330x family ofprecision low dropout anyCAP® voltage regulators. The ADP3338 operates with an input voltage range of +2.7 V to +8 V and delivers a load current up to 1 A. The ADP3338 stands out from the conventional LDOs with a novel architecture and an enhanced process that enables it to offer performance advantages and higher output currentthan its competition. Its patented design requires only a 1.0 µF output capacitor for stability. This device is insensitive to output capacitor Equivalent Series Resistance (ESR), and is stable with any good quality capacitor, including ceramic (MLCC) types for space-restricted applications.The ADP3338 achieves exceptional accuracy of ±0.9% at room temperature and ±1.8% over temperature, line and load variations. The dropout voltage of the ADP3338 is only 200 mV (typical) at 1 A. This device also includes a safety current limit and thermal overload protection. The ADP3338 has ultralow quiescent current 130 µA (typ) in light load situations.APPLICATIONS  Notebook, palmtop computers SCSI terminators Battery-powered systems Bar code scanners Camcorders, cameras Home entertainment systems Networking systems DSP/ASIC supplies

The LTC2924 is a power supply sequencer designed for use with external N-channel MOSFETs or power supplies with shutdown pins. Four power supplies can be fully sequenced by a single LTC2924 and up to five supplies can be sequenced to a sixth master supply. The LTC2924 requires a minimum of external components, using only two feedback resistors per sequenced power supply and a single resistor to set hysteresis.An internally regulated charge pump provides gate drive voltages for external logic and sub-logic-level MOSFETs. Adding a single capacitor enables an adjustable time delay between power supplies during both Power On and Power Off sequencing. A second capacitor can be added to enable a power good timer for detecting the failure of any power supply to turn on within the selected time. Errors in power supply sequencing and the control input are detected and reported at the FAULT output. The LTC2924 features precision input comparators which can provide 1% accuracy in monitoring power supply voltages.Multiple LTC2924s may be easily cascaded to sequence a virtually unlimited number of power supplies.Applications Sequenced Power Supplies for ASICs with Multiple I/O and Core Voltages Latch-Up Prevention in Systems with Multiple Power Supplies

Supervisory Circuits LTC1536 - Precision Triple Supply Monitor for PCI Applications

Power Management IC Development Tools LT4320IDD-1 3-Phase Ideal Diode Bridge R

Switching Voltage Regulators LTC3824 - High Voltage Step-Down Controller With 40- A Quiescent Current

The MAX1044 and ICL7660 are monolithic, CMOS switched-capacitor voltage converters that invert, double, divide, or multiply a positive input voltage. They are pin compatible with the industry-standard ICL7660 and LTC1044. Operation is guaranteed from 1.5V to 10V with no external diode over the full temperature range. They deliver 10mA with a 0.5V output drop. The MAX1044 has a BOOST pin that raises the oscillator frequency above the audio band and reduces external capacitor size requirements.The MAX1044/ICL7660 combine low quiescent current and high efficiency. Oscillator control circuitry and four power MOSFET switches are included on-chip. Applications include generating a -5V supply from a +5V logic supply to power analog circuitry. For applications requiring more power, the MAX660 delivers up to 100mA with a voltage drop of less than 0.65V.Applications-5V Supply from +5V Logic SupplyData AcquisitionEIA/TIA-232E and EIA/TIA-562 Power SuppliesHandheld Instruments (PDAs, Palmtops)Op-Amp Power SuppliesPanel MetersPersonal Communications EquipmentPortable Telephones

The LTC3423 and LTC3424 are high efficiency, fixed frequency, step-up DC/DC converters that can regulate output voltages as low as 1.5V from a single cell. An applied voltage of at least 2.7V to the VDD pin is required to power the internal control circuitry.The devices include a 0.16Ω N-channel MOSFET switch and a 0.21Ω P-channel synchronous rectifier. The LTC3423 is intended for applications requiring less than 0.75W of output power and the LTC3424 for 1.5W or less. Switching frequencies up to 3MHz are programmed with an external timing resistor and the oscillator can be synchronized to an external clock.Quiescent current is only 38µA in Burst Mode operation, maximizing battery life in portable applications. Burst Mode operation is user controlled and can be enabled by driving the MODE/SYNC pin high. If the MODE/SYNC pin has either a clock or is driven low then the operation is at constant fixed frequency.Other features include a 1µA shutdown, thermal shutdown and current limit. The LTC3423 and LTC3424 are available in the 10-lead MSOP package. For applications requiring an output voltage greater than 2.6V, the LTC3401 and LTC3402 are recommended without the need of a separate voltage for the VDD pin.Applications Pagers Handheld Instruments Cordless Phones Wireless Handsets GPS Receivers Battery Backup

The MAX696/MAX697 supervisory circuits reduce the complexity and number of components required for power-supply monitoring and battery-control functions in microprocessor (µP) systems. These include µP reset and backup-battery switchover, watchdog timer, CMOS RAM write protection, and power-failure warning. The MAX696/MAX697 significantly improve system reliability and accuracy compared to that obtained with separate ICs or discrete components.The MAX696 and MAX697 are supplied in 16-pin packages and perform six functions:A reset output during power-up, power-down, and brownout conditions. The threshold for this 'lowline' reset is adjustable by an external voltage-divider.A reset pulse if the optional watchdog timer has not been toggled within a specified time.Individual outputs for low-line and watchdog fault conditions.The reset time may be left at its default value of 50ms, or may be varied with an external capacitor or clock pulses.A separate 1.3V threshold detector for power-fail warning, low-battery detection, or to monitor a power supply other than VCC.The MAX696 also has battery-backup switching for CMOS RAM, CMOS microprocessor, or other low-power logic.The MAX697 lacks battery-backup switching, but has write-protection pins (active-low CE IN and active-low CE OUT) for CMOS RAM or EPROM. In addition, it consumes less than 250 microamperes.ApplicationsComputersControllersCritical µP Power MonitoringIntelligent Instruments