Analog Devices Inc./Maxim Integrated

The ADPL44002 is a CMOS, low dropout (LDO) linear regulator that operates from 2.7V to 40V and provides up to 200mA of output current. This high input voltage LDO is ideal for the regulation of high performance analog and mixed signal circuits operating from 39V down to 1.2V rails. Using an advanced proprietary architecture, the device provides high power supply rejection, low noise, and achieves excellent line and load transient response with a small 2.2μF ceramic output capacitor. The ADPL44002 regulator output noise is 20μVRMSindependent of the output voltage for the fixed options of 5V or less.The ADPL44002 is available in four fixed output voltage options. The following voltages are available from stock: 1.2V (adjustable), 1.8V, 2.5V, 3.3V, and 5.0V.Each fixed output voltage can be adjusted above the initial set point with an external feedback divider. This allows the ADPL44002 to provide an output voltage from 1.2V to VIN− VDOwith high PSRR and low noise.User programmable soft start with an external capacitor is available in the LFCSP package.The ADPL44002 is available in a 6-lead, 2mm × 2mm LFCSP, making it not only a very compact solution, but it also provides excellent thermal performance for applications requiring up to 200mA of output current in a small, low profile footprint. The ADPL44002 is also available in a 5-lead TSOT.APPLICATIONSRegulation to Noise Sensitive ApplicationsADC, DAC Circuits, Precision Amplifiers, Power for VCO VTUNEControlCommunications and InfrastructureMedical and HealthcareIndustrial and Instrumentation

The ADPL62933 is an ultra-low-current (200nA, typ) microprocessor (μP) supervisory circuit that combines voltage monitoring, watchdog timer, and manual reset input functions in a 5- pin SOT23 package. This device asserts a reset signal whenever the monitored voltage drops below the factory-trimmed reset threshold voltage, manual reset is asserted, or the watchdog timer expires. The reset output remains asserted for a minimum timeout period after VCCrises above the reset threshold and manual reset is deasserted. Factory-trimmed reset threshold voltages are offered from +1.575V to +4.625V in approximately 100mV increments (see the Table 1). Each device is offered with six minimum reset timeout options, ranging from 10ms to 1200ms.The ADPL62933 offers a watchdog timer that monitors activity at the WDI input to prevent code execution errors. It also offers watchdog timeout options of 3.3s or 209s (typ). Open-drain, active-low reset outputs is available.Portable/Battery-Powered EquipmentPDAs/Cell PhonesMP3 Players/PagersGlucose Monitors/Patient Monitors

The ADPL62935 is a low-voltage microprocessor (μP) supervisory circuit that combines voltage monitoring and manual reset input functions in a 5-pin SOT23 package. Microprocessor supervisory circuits significantly improve the system’s reliability and accuracy compared to separate ICs or discrete components. These devices assert a reset signal whenever the monitored voltage drops below its preset threshold, keeping it asserted for a minimum timeout period after VCC rises above the threshold. In addition, a debounced manual reset is also available. The ADPL62935 monitors voltages from +1.8V to +5.0V. These outputs are guaranteed to be in the correct state for VCC down to +1.0V.Nine preprogrammed reset threshold voltages are available (see the Threshold Suffix Guide). The ADPL62935 has a manual reset input and both push-pull RESET and push-pull RESET.APPLICATIONSSet-Top BoxesComputers and ControllersEmbedded ControllersIntelligent InstrumentsCritical μP MonitoringPortable/Battery-Powered Equipment

The ADPL63164 low-power microprocessor (μP) supervisory circuits monitor single/dual system supply voltages from 1.575V to 5V and provide maximum adjustability for reset and watchdog functions. These devices assert a reset signal whenever the VCCsupply voltage or RESET IN falls below its reset threshold or when manual reset is pulled low. The reset output remains asserted for the reset timeout period after VCCand RESET IN rise above the reset threshold. The reset function features immunity to power-supply transients.The ADPL63164 has a ±2% factory-trimmed reset threshold voltage in approximately 100mV increments from 1.575V to 5V and/or adjustable reset threshold voltages using external resistors.The reset and watchdog delays are adjustable with external capacitors. The ADPL63164 contains a watchdog select input that extends the watchdog timeout period by 128x.The ADPL63164 is available with an open-drain active-low RESET output. The ADPL63164 is available in an 8-pin SOT23 package and is fully specified over the temperature range of -40°C to +125°C.APPLICATIONSMedical EquipmentAutomotiventelligent InstrumentsPortable EquipmentBattery-Powered Computers/ControllersEmbedded ControllersCritical Microprocessor MonitoringSet Top BoxesComputers