MAX388862.5V to 5.0V, 0.5A/2.5A, Charge/Discharge Regulator for Supercapacitor Backup Applications | Special Purpose Regulators | 2 | Active | The MAX38886 is a storage capacitor or capacitor bank backup regulator designed to efficiently transfer power between a storage element and a system supply rail in reversible buck and boost operations using the same inductor.When the main supply is present and above the minimum system supply voltage, the regulator operates in buck mode and charges the storage element at up to 500mA peak inductor current. Once the storage element is charged, the circuit draws only 2.5μA of current while it maintains the supercapacitor or other storage element in its ready state. When the main supply is removed, the regulator operates in boost mode and prevents the system from dropping below the minimum operating voltage, discharging the storage element at up to 2.5A peak inductor current.The MAX38886 is externally programmable for minimum and maximum voltage of the storage element, such as supercapacitor, minimum system voltage, and maximum charge and discharge currents. The internal DC-DC converter requires only a 1µH inductor.ApplicationsHandheld Industrial EquipmentPortable ComputersPortable Devices with a Removable Battery |
| Evaluation Boards | 3 | Active | |
MAX388892.5V–5.5V, 3A Reversible Buck/Boost Regulator for Backup Power Applications | Evaluation Boards | 3 | Active | ApplicationsAftermarket Automotive TrackingHandheld Industrial EquipmentIndustrial Sensor and ActuatorsPortable Devices/Computers with Removable Battery |
MAX388902.5V to 5.5V, 5A Reversible Buck/Boost Regulator for Backup Applications | Evaluation Boards | 3 | Active | The MAX38890 is a flexible storage capacitor or capacitor bank backup regulator transferring power efficiently between a storage element and a system supply rail.When the main supply is present and its voltage is above the minimum threshold system supply voltage, the regulator operates in charging mode and charges the storage element with a maximum 5A peak, 2.5A average inductor current. Once the storage element is charged, the circuit draws only 4μA of current while maintaining the storage element in its ready state. The supercapacitor needs to be fully charged to enable backup operation.When the main supply is removed, the regulator prevents the system from dropping below the set system backup operating voltage, boosting the supercapacitor voltage to a regulated VSYSby discharging the storage element with a maximum 5A peak inductor current. During this backup mode of operation, the MAX38890 utilizes an adaptive on-time, current-limited, pulse-frequency-modulation (PFM) control scheme. Once the MAX38890 is in backup mode, the BKB flag is low.The external pins allow various settings such as maximum supercapacitor voltage, system backup voltage (VSYS), and peak inductor charge and discharge current. The MAX38890 implements a True ShutdownTM feature, disconnecting SYS from CAP as well as protecting against a SYS short if VCAP> VSYS.Charging and backup can be disabled by keeping the ENC and ENB pins low, respectively. The backup system status can be monitored through two status outputs: the RDY flag that indicates when the supercapacitor is charged and the BKB flag that indicates when backup operation is occurring.APPLICATIONSHandheld Industrial EquipmentPortable Devices/Computers with Removable BatteryIndustrial Sensor and ActuatorsAftermarket Automotive Tracking |
MAX389High-Voltage, Fault-Protected Analog Multiplexers | Serializers, Deserializers | 12 | Active | High-Voltage, Fault-Protected Analog Multiplexers |
MAX3890210.5μVRMSLow Noise 500mA LDO Linear Regulator | Development Boards, Kits, Programmers | 14 | Active | The MAX38902A/B/C/D are low-noise, linear regulators that deliver up to 500mA of output current with only 10.5µVRMSof output noise from 10Hz to 100kHz. These regulators maintain ±1% output accuracy over a wide input voltage range, requiring only 100mV of input-to-output headroom at full load. The 365µA no-load supply current is independent of drop-out voltage.The MAX38902A have nine, pin-selectable output voltages 1.2V, 1.5V, 1.8V, 2.5V, 3.0V, 3.1V, 3.3V, 4.0V, and 5V. The MAX38902B/C have a resistor-adjustable output voltage in the range of 0.6V to 5.3V. The MAX38902B also includes an active-low POK output.The MAX38902D have factory-preset output voltages ranging from 0.7V to 5V. All versions include a programmable output soft-start rate, output over-current and thermal-overload protection.The MAX38902A/B are offered in an 8-pin TDFN package, while the MAX38902C/D are offered in a 2 x 3, 0.4mm wafer-level package (WLP).Design Solution: Modern Portable Devices Require a New Breed of LDOs ›ApplicationsAudio SystemsCommunication CircuitryHigh-Resolution Data Acquisition Systems |
MAX38902A10.5μVRMSLow Noise 500mA LDO Linear Regulator | Power Management (PMIC) | 1 | Active | The MAX38902A/B/C/D are low-noise, linear regulators that deliver up to 500mA of output current with only 10.5µVRMSof output noise from 10Hz to 100kHz. These regulators maintain ±1% output accuracy over a wide input voltage range, requiring only 100mV of input-to-output headroom at full load. The 365µA no-load supply current is independent of drop-out voltage.The MAX38902A have nine, pin-selectable output voltages 1.2V, 1.5V, 1.8V, 2.5V, 3.0V, 3.1V, 3.3V, 4.0V, and 5V. The MAX38902B/C have a resistor-adjustable output voltage in the range of 0.6V to 5.3V. The MAX38902B also includes an active-low POK output.The MAX38902D have factory-preset output voltages ranging from 0.7V to 5V. All versions include a programmable output soft-start rate, output over-current and thermal-overload protection.The MAX38902A/B are offered in an 8-pin TDFN package, while the MAX38902C/D are offered in a 2 x 3, 0.4mm wafer-level package (WLP).Design Solution: Modern Portable Devices Require a New Breed of LDOs ›ApplicationsAudio SystemsCommunication CircuitryHigh-Resolution Data Acquisition Systems |
MAX38902C10.5μVRMSLow Noise 500mA LDO Linear Regulator | Integrated Circuits (ICs) | 1 | Active | The MAX38902A/B/C/D are low-noise, linear regulators that deliver up to 500mA of output current with only 10.5µVRMSof output noise from 10Hz to 100kHz. These regulators maintain ±1% output accuracy over a wide input voltage range, requiring only 100mV of input-to-output headroom at full load. The 365µA no-load supply current is independent of drop-out voltage.The MAX38902A have nine, pin-selectable output voltages 1.2V, 1.5V, 1.8V, 2.5V, 3.0V, 3.1V, 3.3V, 4.0V, and 5V. The MAX38902B/C have a resistor-adjustable output voltage in the range of 0.6V to 5.3V. The MAX38902B also includes an active-low POK output.The MAX38902D have factory-preset output voltages ranging from 0.7V to 5V. All versions include a programmable output soft-start rate, output over-current and thermal-overload protection.The MAX38902A/B are offered in an 8-pin TDFN package, while the MAX38902C/D are offered in a 2 x 3, 0.4mm wafer-level package (WLP).Design Solution: Modern Portable Devices Require a New Breed of LDOs ›ApplicationsAudio SystemsCommunication CircuitryHigh-Resolution Data Acquisition Systems |
MAX38902D10.5μVRMSLow Noise 500mA LDO Linear Regulator | Voltage Regulators - Linear, Low Drop Out (LDO) Regulators | 2 | Active | The MAX38902A/B/C/D are low-noise, linear regulators that deliver up to 500mA of output current with only 10.5µVRMSof output noise from 10Hz to 100kHz. These regulators maintain ±1% output accuracy over a wide input voltage range, requiring only 100mV of input-to-output headroom at full load. The 365µA no-load supply current is independent of drop-out voltage.The MAX38902A have nine, pin-selectable output voltages 1.2V, 1.5V, 1.8V, 2.5V, 3.0V, 3.1V, 3.3V, 4.0V, and 5V. The MAX38902B/C have a resistor-adjustable output voltage in the range of 0.6V to 5.3V. The MAX38902B also includes an active-low POK output.The MAX38902D have factory-preset output voltages ranging from 0.7V to 5V. All versions include a programmable output soft-start rate, output over-current and thermal-overload protection.The MAX38902A/B are offered in an 8-pin TDFN package, while the MAX38902C/D are offered in a 2 x 3, 0.4mm wafer-level package (WLP).Design Solution: Modern Portable Devices Require a New Breed of LDOs ›ApplicationsAudio SystemsCommunication CircuitryHigh-Resolution Data Acquisition Systems |
MAX38902E14μVRMSLow Noise 500mA LDO Linear Regulator | Power Management (PMIC) | 1 | Unknown | The MAX38902E is low-noise linear regulator that delivers up to 500mA of output current with only 14μVRMSof output noise from 10Hz to 100kHz. This regulator maintains ±1% output accuracy over a wide input voltage range, requiring only 100mV of input-to-output headroom at full load. The 600µA no-load supply current is independent of dropout voltage.The MAX38902E has a resistor adjustable output voltage in the range of 0.8V to 5.0V and includes an active-low POK output. The device features a programmable output soft-start rate, output over-current and thermal overload protection.The MAX38902E is offered in an 8-pin TDFN package.ApplicationsAudio SystemsCommunication CircuitryHigh-Resolution Data Acquisition Systems |
