The ADP1762 is a low noise, low dropout (LDO) linear regulator. It is designed to operate from a single input supply with an input voltage as low as 1.10 V, without the requirement of an external bias supply, to increase efficiency and provide up to 2 A of output current.The low 62 mV typical dropout voltage at a 2 A load allows the ADP1762 to operate with a small headroom while maintaining regulation and providing better efficiency.The ADP1762 is optimized for stable operation with small 10 ?F ceramic output capacitors. The ADP1762 delivers optimal transient performance with minimal board area.The ADP1762 is available in fixed output voltages ranging from 0.9 V to 1.5 V. The output of the adjustable output model can be set from 0.5 V to 1.5 V through an external resistor connected between VADJ and ground.The ADP1762 has an externally programmable soft start time by connecting a capacitor to the SS pin. Short-circuit and thermal overload protection circuits prevent damage in adverse conditions. The ADP1762 is available in a small 16-lead LFCSP package for the smallest footprint solution to meet a variety of applications.APPLICATIONS Regulation to noise sensitive applications such as radio frequency (RF) transceivers, analog-to-digital converter (ADC) and digital-to-analog converter (DAC) circuits, phase-locked loops (PLLs), voltage controlled oscillators (VCOs) and clocking integrated circuits Field-programmable gate array (FPGA) and digital signal processor (DSP) supplies Medical and healthcare Industrial and instrumentation?

The ADP1763 is a low noise, low dropout (LDO) linear regulator. Itis designed to operate from a single input supply with an inputvoltage as low as 1.10 V without the requirement of an external biassupply to increase efficiency and provide up to 3 A of output current.The low 95 mV typical dropout voltage at a 3 A load allows theADP1763 to operate with a small headroom while maintainingregulation and providing better efficiency.The ADP1763 is optimized for stable operation with small 10 ?Fceramic output capacitors. The ADP1763 delivers optimaltransient performance with minimal board area.The ADP1763 is available in fixed output voltages ranging from0.9 V to 1.5 V. The output of the adjustable output model can beset from 0.5 V to 1.5 V through an external resistor connectedbetween VADJ and ground.The ADP1763 has an externally programmable soft start time byconnecting a capacitor to the SS pin. Short-circuit and thermaloverload protection circuits prevent damage in adverse conditions.The ADP1763 is available in a small 16-lead LFCSP package for thesmallest footprint solution to meet a variety of applications.APPLICATIONS Regulation to noise sensitive applications such as RF transceivers, analog-to-digital converter (ADC) and digital-to-analog converter (DAC) circuits, phase-locked loops (PLLs), voltage controlled oscillators (VCOs) and clocking integrated circuits Field-programmable gate array (FPGA) and digital signal processor (DSP) supplies Medical and healthcare Industrial and instrumentation Automotive

The ADP1764 is a low noise, low dropout (LDO) linear regulator. It is designed to operate from a single input supply with an input voltage as low as 1.10 V without the requirement of an external bias supply to increase efficiency and provide up to 4 A of output current (IOUT).The low 47 mV typical dropout voltage at a 4 A load allows theADP1764 to operate with a small headroom while maintainingregulation and providing better efficiency.The ADP1764 is optimized for stable operation with small 22 ?F ceramic output capacitors. The ADP1764 delivers optimal transientperformance with minimal printed circuit board (PCB) area.The ADP1764 is available in fixed output voltages ranging from 0.55 V to 1.5 V. The output voltage (VOUT) of the adjustableoutput model can be set from 0.5 V to 1.5 V through an external resistor connected between VADJ and ground.The ADP1764 has an externally programmable soft start time by connecting a capacitor to the SS pin. Short-circuit and thermaloverload protection circuits prevent damage in adverse conditions.The ADP1764 is available in a small, 16-lead LFCSP package forthe smallest footprint solution to meet a variety of applications.Applications Regulation to noise sensitive applications such as radio frequency (RF) transceivers, analog-to-digital converter (ADC) and digital-to-analog converter (DAC) circuits, phase-locked loops (PLLs), voltage controlled oscillators (VCOs) and clocking integrated circuits Field-programmable gate array (FPGA) and digital signal processor (DSP) supplies Medical and healthcare Industrial and instrumentation

The ADP1853 is a wide range input, dc-to-dc, synchronousbuck controller capable of running from commonly used 3.3 Vto 12 V (up to 20 V) voltage inputs. The device nominallyoperates in current mode with valley current sensing providingthe fastest step response for digital loads. It can also beconfigured as a voltage mode controller with low noise andcrosstalk for sensitive loads.The ADP1853 can be used as a master synchronization clockfor the power system and for convenient synchronizationbetween controllers. The CLKOUT signal can synchronizeother devices in the ADP185x family such that slave devicesare phase-shifted from the master to reduce the input ripplecurrent, improve EMI, and reduce the size of the input bulkcapacitance. The ADP1853 can also be configured as a slavedevice for current sharing. Additionally, the ADP1853 includesaccurate tracking, precision enable, and power good functionsfor sequencing. The ADP1853 provides a high speed, high peakcurrent gate driving capability to enable energy efficient powerconversion. The device can be configured to operate in powersaving mode by skipping pulses, reducing switching losses andimproving efficiency at light load and standby conditions.The accurate current limit allows design within a narrowerrange of tolerances and can reduce overall converter size andcost. The ADP1853 can regulate down to 0.6 V output using ahigh accuracy reference with ?1% tolerance over thetemperature range from ?40?C to 125?C.With a wide range input voltage, the ADP1853 is designed toprovide the designer with maximum flexibility for use in avariety of system configurations; loop compensation, soft start,frequency setting, power saving mode, current limit, andcurrent sense gain can all be programmed using externalcomponents. In addition, the external RAMP resistor allowschoosing optimal slope and VIN feedforward in both currentand voltage mode for excellent line rejection. The linearregulator and the boot strap diode for the high-side driver areinternal.Protection features include undervoltage lock out, overvoltage,overcurrent/short circuit, and overtemperature.Applications Intermediate bus and POL systems requiring sequencing and tracking, including Telecom base station and networking Industrial and Instrumentation Medical and healthcare

The ADP1870 / ADP1871?are versatile current-mode, synchronous step-down controllers that provide superior transient response, optimal stability, and current-limit protection by using a constant on-time, pseudo-fixed frequency with a programmable current limit, current-control scheme. In addition, these devices offer optimum performance at low duty cycles by utilizing valley current-mode control architecture. This allows the ADP1870 / ADP1871 to drive all N-channel power stages to regulate output voltages as low as 0.6 V.The ADP1871 is the power saving mode (PSM) version of the device and is capable of pulse skipping to maintain output regulation while achieving improved system efficiency at light loads (see the Power Saving Mode (PSM) Version (ADP1871) section for more information).Available in three frequency options (300 kHz, 600 kHz, and 1.0 MHz, plus the PSM option), the ADP1870 / ADP1871 are well suited for a wide range of applications that require a single-input power supply range from 2.95 V to 20 V. Low voltage biasing is supplied via a 5 V internal LDO.In addition, an internally fixed soft start period is included to limit input in-rush current from the input supply during startup and to provide reverse current protection during soft start for a precharged output. The low-side current-sense, current-gain scheme and integration of a boost diode, along with the PSM/forced pulse width modulation (PWM) option, reduce the external part count and improve efficiency.The ADP1870 / ADP1871 operate over the -40?C to +125?C junction temperature range and are available in 10-lead MSOP package.

The ADP1872?/ ADP1873 are versatile current-mode, synchronous step-down controllers that provide superior transient response, optimal stability, and current limit protection by using a constant on-time, pseudo-fixed frequency with a programmable current-sense gain, current-control scheme. In addition, these devices offer optimum performance at low duty cycles by utilizing valley current-mode control architecture. This allows the ADP1872 /ADP1873 to drive all N-channel power stages to regulate output voltages as low as 0.6 V.The ADP1873 is the power-saving mode (PSM) version of the device and is capable of pulse skipping to maintain output regulation while achieving improved system efficiency at light loads.Available in three frequency options (300 kHz, 600 kHz, and 1.0 MHz), the ADP1872 / ADP1873 are well suited for a wide range of applications. These ICs not only operate from a 2.75 V to 5.5 V bias supply, but also can accept a power input as high as 20 V.In addition, an internally fixed soft start period is included to limit input in-rush current from the input supply during startup and to provide reverse current protection during soft start for a pre-charged output. The low-side current-sense, current-gain scheme, along with the PSM/forced pulse-width modulation (PWM) option, reduces the external part count and improves efficiency. The ADP1872 / ADP1873 operate over the ?40?C to +125?C junction temperature range and are available in a 10-lead MSOP.APPLICATIONS Telecom and networking systems Mid to High End servers Set-top boxes DSP core power supplies

The ADP1882?/ ADP1883 are versatile current-mode, synchronous step-down controllers that provide superior transient response, optimal stability, and current-limit protection by using a constant on-time, pseudo-fixed frequency with a programmable current-limit, current-control scheme. In addition, these devices offer optimum performance at low duty cycles by using valley current-mode control architecture. This allows the ADP1882 / ADP1883 to drive all N-channel power stages to regulate output voltages as low as 0.8 V.The ADP1883 is the power saving mode (PSM) version of the device and is capable of pulse skipping to maintain output regulation while achieving improved system efficiency at light loads (see the Power Saving Mode (PSM) Version (ADP1883) section for more information).Available in three frequency options (300 kHz, 600 kHz, and 1.0 MHz, plus the PSM option), the ADP1882/ADP1883 are well suited for a wide range of applications. These ICs not only operate from a 2.75 V to 5.5 V bias supply, but they also can accept a power input as high as 20 V.In addition, an internally fixed soft start period is included to limit input in-rush current from the input supply during startup and to provide reverse current protection during soft start for a pre-charged output. The low-side current-sense, current-gain scheme and integration of a boost diode, along with the PSM/forced pulse-width modulation (PWM) option, reduce the external part count and improve efficiency.The ADP1882 / ADP1883 operate over the -40?C to +125?C junction temperature range and are available in a 10-lead MSOP.

The ADP1882?/ ADP1883 are versatile current-mode, synchronous step-down controllers that provide superior transient response, optimal stability, and current-limit protection by using a constant on-time, pseudo-fixed frequency with a programmable current-limit, current-control scheme. In addition, these devices offer optimum performance at low duty cycles by using valley current-mode control architecture. This allows the ADP1882 / ADP1883 to drive all N-channel power stages to regulate output voltages as low as 0.8 V.The ADP1883 is the power saving mode (PSM) version of the device and is capable of pulse skipping to maintain output regulation while achieving improved system efficiency at light loads (see the Power Saving Mode (PSM) Version (ADP1883) section for more information).Available in three frequency options (300 kHz, 600 kHz, and 1.0 MHz, plus the PSM option), the ADP1882/ADP1883 are well suited for a wide range of applications. These ICs not only operate from a 2.75 V to 5.5 V bias supply, but they also can accept a power input as high as 20 V.In addition, an internally fixed soft start period is included to limit input in-rush current from the input supply during startup and to provide reverse current protection during soft start for a pre-charged output. The low-side current-sense, current-gain scheme and integration of a boost diode, along with the PSM/forced pulse-width modulation (PWM) option, reduce the external part count and improve efficiency.The ADP1882 / ADP1883 operate over the -40?C to +125?C junction temperature range and are available in a 10-lead MSOP.

The ADP197 is a high-side load switch designed for operation between 1.8 V and 5.5 V. This load switch provides power domain isolation, helping extended power domain isolation. The device contains a low on-resistance, N-channel MOSFET that supports more than 3 A of continuous current and minimizes power loss. The low 18 ?A quiescent current and ultralow shutdown current make the ADP197 ideal for battery-operated portable equipment. The built-in level shifter for enable logic makes the ADP197 compatible with many processors and GPIO controllers.Overtemperature protection circuitry activates if the junction temperature exceeds 125?C, thereby protecting itself and downstream circuits from potential damage.In addition to operating performance, the ADP197 occupies minimal printed circuit board (PCB) space with an area of less than 1.5 mm2 and a height of 0.60 mm.The ADP197 is available in an ultrasmall, 1 mm ? 1.5 mm, 6-ball, 0.5 mm pitch WLCSP.

The ADP2105 / ADP2106 / ADP2107 are low quiescent current,synchronous, step-down dc-to-dc converters in a compact 4 mm ?4 mm LFCSP package. At medium to high load currents, thesedevices use a current mode, constant frequency pulse-widthmodulation (PWM) control scheme for excellent stability andtransient response. To ensure the longest battery life in portableapplications, the ADP2105 / ADP2106 / ADP2107 use a pulsefrequency modulation (PFM) control scheme under light loadconditions that reduces switching frequency to save power.The ADP2105 / ADP2106 / ADP2107 run from input voltages of2.7 V to 5.5 V, allowing single Li+/Li? polymer cell, multiplealkaline/NiMH cells, PCMCIA, and other standard power sources.The output voltage of ADP2105 / ADP2106 / ADP2107 is adjustablefrom 0.8 V to the input voltage (indicated by ADJ), whereas theADP2105 / ADP2106 / ADP2107 are available in preset outputvoltage options of 3.3 V, 1.8 V, 1.5 V, and 1.2 V (indicated by x.x V).Each of these variations is available in three maximum currentlevels: 1 A (ADP2105), 1.5 A (ADP2106), and 2 A (ADP2107).The power switch and synchronous rectifier are integrated forminimal external part count and high efficiency. During logiccontrolled shutdown, the input is disconnected from the output,and it draws less than 0.1 ?A from the input source. Other keyfeatures include undervoltage lockout to prevent deep batterydischarge and programmable soft start to limit inrush current atstartup.Applications Mobile handsets PDAs and palmtop computers Telecommunication/networking equipment Set top boxes Audio/video consumer electronics