The ADP2311 is a fully integrated, dual output, synchronous step-down dc-to-dc regulator. The regulator operates from input voltages of 4.5 V to 18 V, and the output can regulate down to 0.6 V. Each channel can provide up to 1 A of continuous output current.The ADP2311 integrates the high-side and low-side MOSFETs to provide a very high efficiency, compact solution. Both channels of the regulator run at 180? out of phase to reduce the input ripple current and the input capacitor size, thereby helping to lower system electromagnetic interference (EMI). The ADP2311 also integrates internal compensation and soft start circuitry to simplify the design.An on-chip watchdog timer can reset the microprocessor if it fails to strobe within a preset timeout period. Accurate voltage monitoring circuitry and a power fail comparator provide a controlled power-up and power-down sequence to enhance system reliability.The ADP2311 also includes undervoltage lockout (UVLO), overvoltage protection (OVP), overcurrent protection (OCP), and thermal shutdown (TSD).The ADP2311 operates over the ?40?C to +125?C junction temperature range and is available in a 24-lead LFCSP package.Applications Industrial and instrumentation Healthcare and medical DC-to-DC point of load applications

The ADP2360 is a high efficiency, high input voltage, discontinuous conduction mode (DCM) synchronous, step-down, dc-to-dc switching regulator. The ADP2360 operates with a wide input voltage range from 4.5 V to 60 V and can source up to 50 mA continuous output current, making it ideal for regulating power from a variety of voltage sources in space-constrained applications. The ADP2360 is available with an adjustable output (0.8 V to VIN) or in 3.3 V and 5.0 V factory-programmable fixed output voltage models.The ADP2360 uses a single-pulse PFM architecture with adjustable IPEAK control to minimize the input and output ripple. The adjustable IPEAK current limit allows the ADP2360 tooptimize the efficiency for the application operating conditions and minimize the compatible inductor size.The ADP2360 further offers a power-good (PG) pin to indicate when the output voltage is good. Other key features include 100% duty cycle operation, precision enable control, external soft start control, undervoltage lockout, and thermal shutdown.The ADP2360 requires no external compensation and the solution for the fixed output voltage options requires a minimum of three external components. The ADP2360 is available in a 3 mm ? 3 mm, 8-lead LFCSP package with an operating junction temperature range from ?40?C to +125?C.Applications 4 mA to 20 mA loop powered systems HART modems Building automation Distributed power systems Industrial control supplies Other high VIN, low IOUT systems

The ADP2503?/ ADP2504 are high efficiency, low quiescent current step-up/step-down dc-to-dc converters that can operate at input voltages greater than, less than, or equal to the regulated output voltage. The power switches and synchronous rectifiers are internal to minimize external device count. At high load currents, the ADP2503 / ADP2504 use a current-mode, fixed frequency pulse-width modulation (PWM) control scheme for optimal stability and transient response. To ensure the longest battery life in portable applications, the ADP2503 / ADP2504 have an optional power save mode that reduces the switching frequency under light load conditions. For wireless and other low noise applications where variable frequency power save mode may cause interference, the logic control input sync forces fixed frequency PWM operation under all load conditions.?The ADP2503 / ADP2504 can run from input voltages between 2.3 V and 5.5 V, allowing single lithium or lithium polymer cell, multiple alkaline or NiMH cells, PCMCIA, USB, and other standard power sources. The ADP2503 / ADP2504 have fixed output options, or using the adjustable model, the output voltage can be programmed through an external resistor divider. Compensation is internal to minimize the number of external components.During logic-controlled shutdown, the input is disconnected from the output and draws less than 1 ?A from the input source. Operating as boost converters, the ADP2503 / ADP2504 feature a true load disconnect function that isolates the load from the power source. Other key features include undervoltage lockout to prevent deep battery discharge, and soft start to prevent input current overshoot at startup.APPLICATIONSWireless handsetsDigital cameras/portable audio playersMiniature hard disk power suppliesUSB powered devices?

The ADP5003 integrates a high voltage buck regulator and an ultralow noise low dropout (LDO) regulator in a small, 5 mm ? 5 mm, 32-lead LFCSP package to provide highly efficient and quiet regulated suppliesThe buck regulator is optimized to operate at high output currents up to 3 A. The LDO is capable of a maximum output current of 3 A and operates efficiently with low headroom voltage while maintaining high power supply rejection.The ADP5003 can operate in one of two modes. Adaptive mode allows the LDO to operate with an optimized headroom by adjusting the buck output voltage internally in response to the LDO load current. Alternatively, the ADP5003 can operate in independent mode, where both regulators operate separately from each other, and where the output voltages are programmed using resistor dividers.The LDO regulator output can be accurately controlled at the point of load (POL) using remote sensing that compensates for the printed circuit board (PCB) trace impedance while delivering high output currents.Each regulator is activated via a dedicated precision enable input. The buck switching frequency can be synchronized to an external signal, or programmed with an external resistor.Safety features in the ADP5003 include thermal shutdown (TSD), input undervoltage lockout (UVLO) and independent current limits for each regulator. The ADP5003 is rated for a ?40?C to +125?C operating junction temperature range.APPLICATIONS Low noise power for high speed analog-to-digital converter (ADC) and digital-to-analog converter (DAC) designs Powering RF transceivers and clocking ICs

The ADP5014 combines four high performance, low noise buck regulators in a 40-lead LFCSP package. Relying on its low output noise (~25 ?V rms when VOUT ? VREF), the low noise buck regulator enables the powering up of the noise sensitive signal chain products.All channels in the ADP5014 integrate high-side and low-side power metal-oxide semiconductor field effect transistors (MOSFET). Channel 1 and Channel 2 deliver a programmable output current of 2 A or 4 A. Combining Channel 1 and Channel 2 in a parallel configuration provides a single output with up to 8 A of current.Channel 3 and Channel 4 deliver a programmable output current of 1 A or 2 A. Combining Channel 3 and Channel 4 in a parallel configuration can provide a single output with up to 4 A of current.The ADP5014 features two enable modes. The manual mode has four individual precision enable pins to enable each regulator manually. Alternatively, the sequence mode has one grouped precision enable signal with programmable power-up and power-down delay timers on each rail for specific rail sequence requirements.The switching frequency of the ADP5014 can be programmed or synchronized to an external clock from 500 kHz to 2.5 MHz.The ADP5014 offers other key features like selective forced pulse width modulation (FPWM)/power saving mode (PSM), an undervoltage output (UVO), active output discharge, and a power-good flag. Other safety features include input undervoltage lockout (UVLO), overvoltage protection (OVP), overcurrent protection (OCP) and thermal shutdown (TSD).Applications RF transceiver, high speed analog-to-digital converter (ADC)/digital-to-analog converter (DAC), mixed signal ASIC FPGA and processor applications Security and surveillance Medical applications

The ADP5024 combines two high performance buck regulators and one low dropout (LDO) regulators in a small, 24-lead 4 mm ? 4 mm LFCSP to meet demanding performance and board space requirements. The high switching frequency of the buck regulators enables tiny multilayer external components and minimizes the board space. When the MODE pin is set high, the buck regulators operate in forced PWM mode. When the MODE pin is set low, the buck regulators operate in PWM mode when the load current is above a predefined threshold. When the load current falls below a pre-defined threshold, the regulator operates in power save mode (PSM), improving the light load efficiency. The two bucks operate out of phase to reduce the input capacitor requirement. The low quiescent current, low dropout voltage, and wide input voltage range of the LDO extends the battery life of portable devices. The ADP5024 LDO maintains power supply rejection greater than 60 dB for frequencies as high as 10 kHz while operating with a low headroom voltage.Regulators in the ADP5024 are activated though dedicated enable pins. The default output voltages can be either externally set in the adjustable version or factory programmable to a wide range of preset values in the fixed voltage version.APPLICATIONS Power for processors, ASICS, FPGAs, and RF chipsets Portable instrumentation and medical devices Space constrained devices

The ADP5037 combines two high performance buck regulators and two low dropout (LDO) regulators in a small, 24-lead 4 mm ? 4 mm LFCSP to meet demanding performance and board spacerequirements.The high switching frequency of the buck regulators enables tiny multilayer external components and minimizes the board space. When the MODE pin is set high, the buck regulators operate in forced PWM mode. When the MODE pin is set low and the load is above a predefined threshold, the buck regulators operate in PWM mode. When the load current falls below apredefined threshold, the regulator operates in power savemode (PSM), improving the light-load efficiency.The two bucks operate out of phase to reduce the input capacitor requirement. The low quiescent current, low dropout voltage, and wide input voltage range of the ADP5037 LDOs extend the battery life of portable devices. The ADP5037 LDOs maintain power supply rejection greater than 60 dB for frequencies as high as 10 kHz while operating with a low headroom voltage.Regulators in the ADP5037 are activated though dedicated enable pins. The default output voltages can be externally set in the adjustable version or factory programmable to a wide range of preset values in the fixed voltage version.APPLICATIONS Power for processors, ASICS, FPGAs, and RF chipsets Portable instrumentation and medical devices Space constrained devices?

The ADP5050 combines four high performance buck regulators and one 200 mA low dropout (LDO) regulator in a 48-lead LFCSP package that meets demanding performance and board space requirements. The device enables direct connection to high input voltages up to 15 V with no preregulators.Channel 1 and Channel 2 integrate high-side power MOSFETs and low-side MOSFET drivers. External NFETs can be used in low-side power devices to achieve an efficiency optimized solution and deliver a programmable output current of 1.2 A, 2.5 A, or 4 A. Combining Channel 1 and Channel 2 in a parallel configuration can provide a single output with up to 8 A of current.Channel 3 and Channel 4 integrate both high-side and low-side MOSFETs to deliver output current of 1.2 A.The switching frequency of the ADP5050 can be programmed or synchronized to an external clock. The ADP5050 contains a precision enable pin on each channel for easy power-up sequencing or adjustable UVLO threshold.The ADP5050 integrates a general-purpose LDO regulator with low quiescent current and low dropout voltage that provides up to 200 mA of output current.The optional I2C interface provides the user with flexible configuration options, including adjustable and fixed output voltage options, junction temperature overheat warning, low input voltage detection, and dynamic voltage scaling (DVS).APPLICATIONS Small cell base stations FPGA and processor applications Security and surveillance Medical applications

The ADP5051 combines four high performance buck regulators,and a supervisory circuit with a voltage monitor, watchdog, andmanual reset in a 48-lead LFCSP package that meets demandingperformance and board space requirements. The device enablesdirect connection to high input voltages up to 15.0 V with nopreregulators.Channel 1 and Channel 2 integrate high-side power MOSFET andlow-side MOSFET drivers. In low-side power devices, use externalNFETs to achieve an efficiency optimized solution and deliver aprogrammable output current of 1.2 A, 2.5 A, or 4 A.Combining Channel 1 and Channel 2 in a parallel configurationprovides a single output with up to 8 A of current. Channel 3 andChannel 4 integrate both high-side and low-side MOSFETs todeliver an output current of 1.2 A.The ADP5051 supervisory circuits monitor voltage level. Thewatchdog timer generates a reset when the WDI does not togglewithin a preset timeout period. Select manual reset functionalityvia the processor reset mode or system power on/off switch mode.The optional I2C interface offers flexible configurations, including adjustable and fixed output voltage, junction temperature overheat warning, low input voltage detection, and dynamic voltage scaling.APPLICATIONS Small cell base stations FPGA and processor applications Security and surveillance Medical applications

The ADP5052 combines four high performance buck regulators and one 200 mA low dropout (LDO) regulator in a 48-lead LFCSP package that meets demanding performance and board space requirements. The device enables direct connection to high input voltages up to 15 V with no preregulators.Channel 1 and Channel 2 integrate high-side power MOSFETs and low-side MOSFET drivers. External NFETs can be used in low-side power devices to achieve an efficiency optimized solution and deliver a programmable output current of 1.2 A, 2.5 A, or 4 A. Combining Channel 1 and Channel 2 in a parallel configuration can provide a single output with up to 8 A of current.Channel 3 and Channel 4 integrate both high-side and low-side MOSFETs to deliver output current of 1.2 A.The switching frequency of the ADP5052 can be programmed or synchronized to an external clock. The ADP5052 contains a precision enable pin on each channel for easy power-up sequencing or adjustable UVLO threshold.The ADP5052 integrates a general-purpose LDO regulator with low quiescent current and low dropout voltage that provides up to 200 mA of output current.Applications Small cell base stations FPGA and processor applications Security and surveillance Medical applications