ADP5134Dual 3 MHz, 1200mA Buck Regulators and Two 300mA LDO Regulators With Precision Enable and Power-Good Output | Development Boards, Kits, Programmers | 2 | Active | The ADP5134 combines two high performance buck regulators and two low dropout (LDO) regulators. It is available in a 24-lead 4 mm × 4 mm LFCSP.The high switching frequency of the buck regulators enables tiny multilayer external components and minimizes the board space. When the MODE pin is set to high, the buck regulators operate in forced pulse-width modulation (PWM) mode. When the MODE pin is set to low, the buck regulators operate in PWM mode when the load is above a predefined threshold. When the load current falls below a predefined threshold, the regulator operates in power save mode (PSM), improving the light load efficiency.The two buck regulators operate out of phase to reduce the input capacitor requirement. The low quiescent current, low dropout voltage, and wide input voltage range of the ADP5134 LDO regulators extend the battery life of portable devices. The ADP5134 LDO regulators maintain power supply rejection greater than 60 dB for frequencies as high as 10 kHz while operating with a low headroom voltage of 500 mV.Regulators in the ADP5134 are activated through 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.ApplicationsPower for processors, application specific integrated circuits(ASICs), field programmable gate arrays (FPGAs), andradio frequency (RF) chipsetsPortable instrumentation and medical devicesSpace constrained devices |
| Integrated Circuits (ICs) | 2 | Active | |
| DC/DC & AC/DC (Off-Line) SMPS Evaluation Boards | 3 | Active | |
ADP5140Power Management IC for Automotive Application | Voltage Regulators - Linear + Switching | 1 | Active | The ADP5140 integrates four high performance, synchronous, step-down buck regulators (BUCK1 to BUCK4), one boost regulator, and seven low noise, low dropout (LDO) regulators (LDO1 to LDO7). The buck regulators support input voltages from 2.7 V to 5.5 V and provide output currents from 2.5 A to 3 A. The boost regulator provides a fixed 5 V output and provides a 400 mA load current. The seven LDOs provide a clean output voltage for the system. LDO5 provides an ultralow noise output that can be used to power noise sensitive loads.The ADP5140 runs in a fixed 2.2 MHz switching frequency (fSW) or can synchronize to an external clock from its 1.9 MHz to 2.4 MHz synchronization range, which is outside of the amplitude modulation (AM) band. The four buck regulators run at 90° out of phase to reduce the input ripple current and the input capacitor size, which lowers the system electromagnetic interference (EMI).All regulators integrate internal compensation to simplify the design. The internal soft start circuitry and power-up sequencing reduce the input inrush current.Each voltage rail is monitored internally and any fault event is reported to the system through theRESET,FAULT, andSTATUSpins. Two window watchdogs (WD0 and WD1) and one question answer (QA) watchdog monitor the processor or other devices in the system to ensure that any software or hardware errors are detected. The ADP5140 integrates a serial peripheral interface (SPI) for system control and diagnostics.Additional protection includes current-limit protection, overvoltage protection, undervoltage protection, and thermal shutdown (TSD).The ADP5140 operates over a junction temperature range of −40°C to +150°C and is available in a 56-terminal, land grid array (LGA).APPLICATIONSAdvanced driver assistance (ADAS)Automotive electronicsInfotainment systemIndustrial and instrumentation |
| Power Management (PMIC) | 4 | Active | |
ADP530150 mA/500 mA, High Efficiency, Ultralow Power Step-Down Regulator | Voltage Regulators - DC DC Switching Regulators | 4 | Active | The ADP5301 is a high efficiency, ultralow quiescent current step-down regulator that draws only a 180 nA quiescent current to regulate the output at no load.The ADP5301 runs from an input startup voltage range of 2.15 V to 6.50 V, allowing the use of multiple alkaline/NiMH, Li-Ion cells, or other power sources. The output voltage is selectable from 0.8 V to 5.0 V by an external VID resistor and factory fuse. The total solution requires only four tiny external components.The ADP5301 can operate between hysteresis mode and PWM mode via the SYNC/MODE pin. The regulator in hysteresis mode achieves excellent efficiency at a power of less than 1 mW and provides up to 50 mA of output current. The regulator in PWM mode produces a lower output ripple and supplies up to 500 mA of output current. The flexible configuration capability during operation of the device enables very efficient power management to meet both the longest battery life and low system noise requirements.The ADP5301 contains a VOUTOK flag, which monitors the output voltage and runs at a 2 MHz switching frequency in PWM mode. SYNC/MODE can synchronize to an external clock from 1.5 MHz to 2.5 MHz.Other key features in the ADP5301 include separate enabling, quick output discharge (QOD), and safety features such as overcurrent protection (OCP), thermal shutdown (TSD), and input undervoltage lockout (UVLO).The ADP5301 is available in a 9-ball, 1.65 mm × 1.87 mm WLCSP rated for a −40°C to +125°C junction temperature range.ApplicationsEnergy (gas and water) meteringPortable and battery-powered equipmentMedical applicationsKeep-alive power supplies |
| Development Boards, Kits, Programmers | 4 | Active | |
| Voltage Regulators - DC DC Switching Regulators | 3 | Active | |
ADP5304Ultralow Power Step-Down Regulator with Input Voltage Monitor and Regulation | DC/DC & AC/DC (Off-Line) SMPS Evaluation Boards | 3 | Active | The ADP5304 is a high efficient, ultralow quiescent current step-down regulator that draws only 260 nA of quiescent current to regulate the output at no load.The ADP5304 runs from an input voltage range of 2.15 V to 6.50 V, allowing the use of the multiple alkaline, NiMH, and Lithium cells, or the use of a high impedance power source. The output voltage is selectable from 0.8 V to 5.0 V by an external VID resistor to ground. The total solution requires only four tiny external components.The ADP5304 operates in hysteresis mode via connecting the MODE pin to ground. In hysteresis mode, the regulator achieves excellent efficiency at a power of less than 1 mW and provides up to 50 mA of output load. The device enables very efficient power management to achieve the collection of small amounts of energy from the high impedance battery or the energy harvester to charge up the conventional capacitor or super capacitor.The ADP5304 integrates an ultralow power comparator with a factory programmable voltage reference to monitor the voltage of the input power source. The voltage reference, with hysteresis, is the threshold for the stopping and starting of switching, allowing the use of the high impedance power source.Other key features of the ADP5304 include separate enabling and an output discharge function (QOD). Safety features, such as overcurrent protection, thermal shutdown (TSD), and input undervoltage (UVLO), are also included.The ADP5304 is available in 10-lead, 3 mm × 3 mm LFCSP package rated for the −40°C to +125°C junction temperature range.ApplicationsEnergy (gas, water) meteringEnergy harvesting applicationsPortable and battery-powered equipmentMedical applicationsKeep-alive power supply |
ADP53103-Channel, Integrated Ultralow Power Solution with Dual Buck Regulators and Load Switch | Evaluation Boards | 5 | Active | The ADP5310 combines dual buck regulators and one load switch in a 16-lead TSSOP_EP package that meets demanding performance and board space requirements. The device enables direct connection to a wide input voltage range of 2.7 V to 15.0 V, allowing the use of multiple alkaline/NiMH or lithium cells and other power sources.The buck regulator in Channel 1 uses a current mode, constant frequency pulse-width modulation (PWM) control scheme for excellent stability and transient performance, which provides up to 800 mA of output current. The automatic PWM/pulse skipping mode (PSM) control scheme achieves excellent efficiency in light output current. A power-good signal indicates that the output of Channel 1 is within 92% of its nominal value.An ultralow power buck regulator is integrated in Channel 2 with the SYNC/MODE pin to control its operation mode. When SYNC/MODE is set to low, the buck regulator operates in hysteresis mode, which draws only 700 nA of quiescent current to regulate the output under zero load and provides up to 50 mA of output current. Hysteresis mode helps achieve excellent efficiency at less than 1 mW and can work as a keep-alive power supply in a batterypowered system. When the SYNC/MODE pin is set to high, the buck regulator switches to a traditional constant frequency PWM control scheme to provide low output ripple for noise sensitive applications, and the buck regulator provides up to 300 mA of output current in PWM mode.Channel 3 integrates a high-side load switch that operates from 1.65 V to 5.5 V with its input connected to the output of Channel 2. The load switch provides power domain isolation and extends battery operation time.Other key safety features of the ADP5310 include overcurrent protection (OCP), thermal shutdown (TSD), and input undervoltage lockout (UVLO). The ADP5310 is rated for the −40°C to +125°C junction temperature range.ApplicationsEnergy (gas and water) meteringPortable and battery-powered equipmentMedical applicationsKeep-alive power supplies |
