Analog Devices Inc./Maxim Integrated

The ADP5030 combines two high performance, low dropout (LDO) voltage regulators, a low RDSON load switch, and level shifting logic in a tiny, 16-ball, 1.6 mm × 1.6 mm WLCSP to meet demanding performance and board space requirements.The low quiescent current, low dropout voltage, and wide input voltage range of the ADP5030 LDOs extend the battery life of portable devices. The ADP5030 LDOs maintain power supply rejection greater than 60 dB for frequencies as high as 100 kHz while operating with a low headroom voltage.The ADP5030 can be configured in two different activation modes for LDO2 and the load switch; these modes are selected by a dedicated pin (MSEL).APPLICATIONSRF subsystemsGPS devices

The ADP5034 combines two high performance buck regulators and two low dropout (LDO) regulators in a small, 24-lead 4 mm × 4 mm LFCSP (QFN) 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 is around the nominal value. When the load current falls below a predefined 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 capaci-tor requirement. The low quiescent current, low dropout voltage, and wide input voltage range of the ADP5034 LDOs extend the battery life of portable devices. The ADP5034 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 ADP5034 are activated though dedicated enable pins. The default output voltages can be externally set in the adjustable version, or factory programmable in the fixed voltage version, and can be set to a wide range of preset valuesAPPLICATIONSPower for processors, ASICS, FPGAs, and RF chipsetsPortable instrumentation and medical devicesSpace constrained devices

The ADP5040 combines one high performance buck regulator and two low dropout regulators (LDO) in a small 20-lead LFCSP to meet demanding performance and board space requirements.The high switching frequency of the buck regulator enables the use of tiny multilayer external components and minimizes board space.When the MODE pin is set to logic high, the buck regulator operates in forced pulse width modulation (PWM) mode. When the MODE pin is set to logic low, the buck regulator operates in PWM mode when the load is around the nominal value. When the load current falls below a predefined threshold the regulator operates in power save mode (PSM) improving the light-load efficiency. The low quiescent current, low dropout voltage, and wide input voltage range of the ADP5040 LDOs extend the battery life of portable devices. The ADP5040 LDOs maintain a power supply rejection greater than 60 dB for frequencies as high as 10 kHz while operating with a low headroom voltage.Each regulator in the ADP5040 is activated by a high level on the respective enable pin. The output voltages of the regulators are programmed though external resistor dividers to address a variety of applications.

The ADP5041 combines one high performance buck regulator and two low dropout (LDO) regulators in a small 20-lead LFCSP to meet demanding performance and board space requirements.The high switching frequency of the buck regulator enables use of tiny multilayer external components and minimizes board space.When the MODE pin is set to logic high, the buck regulator operates in forced PWM mode. When the MODE pin is set to logic low, the buck regulator operates in PWM mode when the load is around the nominal value. When the load current falls below a predefined threshold, the regulator operates in power save mode (PSM), improving the light load efficiency. The low quiescent current, low dropout voltage, and wide input voltage range of the ADP5041 LDOs extend the battery life of portable devices. The ADP5041 LDOs maintain a power supply rejection greater than 60 dB for frequencies as high as 10 kHz while operating with a low headroom voltage.Each regulator in the ADP5041 is activated by a high level on the respective enable pin. The output voltages of the regulators and the reset threshold are programmed through external resistor dividers to address a variety of applications. The ADP5041 contains supervisory circuits that monitor power supply voltage levels and code execution integrity in microprocessor-based systems. They also provide power-on reset signals. An on-chip watchdog timer can reset the microprocessor if it fails to strobe within a preset timeout period.

The ADP5042 combines one high performance buck regulator and two low dropout regulators (LDO) in a small 20-lead LFCSP to meet demanding performance and board space requirements.The high switching frequency of the buck regulator enables use of tiny multilayer external components and minimizes the board space.The MODE pin selects the buck mode of operation. When set to logic high, the buck regulators operate in forced PWM mode. When the MODE pin is set to logic low, the buck regulators operate in PWM mode when the load is around the nominal value. When the load current falls below a predefined threshold the regulator operates in power save mode (PSM) improving the light-load efficiency.The low quiescent current, low dropout voltage, and wide input voltage range of the ADP5042 LDOs extend the battery life of portable devices. The two LDOs maintain power supply rejection greater than 60 dB for frequencies as high as 10 kHz while operating with a low headroom voltage.Each regulator is activated by a high level on the respective enable pin. The ADP5042 is available with factory programmable default output voltages and can be set to a wide range of options.The ADP5042 contains supervisory circuits that monitor power supply voltage levels and code execution integrity in microprocessor-based systems. They also provide power-on reset signals. An on-chip dual watchdog timer can reset the microprocessor or power cycle the system (Watchdog 2) if it fails to strobe within a preset timeout period.

The ADP5043 combines one high performance buck regulator and one low dropout (LDO) regulator in a small 20-lead LFCSP to meet demanding performance and board space requirements.The high switching frequency of the buck regulator enables use of tiny multilayer external components and minimizes board space.The MODE pin selects the buck’s mode of operation. When set to logic high, the buck regulator operates in forced PWM mode. When the MODE pin is set to logic low, the buck regulator operates in PWM mode when the load is around the nominal value. When the load current falls below a predefined threshold, the regulator operates in power save mode (PSM) improving the light-load efficiency.The low quiescent current, low dropout voltage, and wide input voltage range of the ADP5043 LDO extend the battery life of portable devices. The LDO maintains a power supply rejection of greater than 60 dB for frequencies as high as 10 kHz while operating with a low headroom voltage.Each regulator is activated by a high level on the respective enable pin. The ADP5043 is available with factory programmable default output voltages and can be set to a wide range of options.The ADP5043 contains supervisory circuits that monitor power supply voltage levels and code execution integrity in microprocessor-based systems. The ADP5043 also provides power-on reset signals. An on-chip dual watchdog timer can reset the microprocessor or power cycle the system (Watchdog 2) if it fails to strobe within a preset timeout period.