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MAX1976A：Low-Input-Voltage, 300mA LDO Regulators with RESET in SOT and TDFN

The MAX1963A/MAX1976A low-dropout linear regulators operate from a +1.62V to +3.6V supply and deliver a guaranteed 300mA continuous load current with a low 100mV dropout. The high-accuracy (±0.5%) output voltage is preset to an internally trimmed voltage in the +0.75V to +3.0V range. An active-low, open-drain reset output remains asserted for at least 2.2ms (MAX1963A) or 70ms (MAX1976A) after the output voltage reaches regulation. These devices are offered in thin SOT23 and thin DFN packages. An internal pMOS pass transistor allows the low supply current to remain independent of load and dropout voltage, making these devices ideal for portable battery-powered equipment.

Key Features Low 1.62V Minimum Input Voltage Guaranteed 300mA Output Current ±2.5% Accuracy Over Load/Line/Temp Low 100mV Dropout at 300mA Load 2.2ms (MAX1963A) or 70ms (MAX1976A) Active-Low RESET Output Flag Supply Current Independent of Load and Dropout Voltage Logic-Controlled Shutdown Thermal-Overload and Short-Circuit Protection Preset Output Voltages (0.75V to 3.0V) Tiny 6-Pin Thin SOT23 Package (< 1.1mm High) TDFN Package (< 0.8mm High)

MAX1963A, MAX1976A: Typical Operating Circuit Applications/Uses Cellular/Smart/PDA Phones DSC, CD/MP3 Players Notebook/Handheld Computers PCMCIA Cards

DataSheet

Parametrics

Quality and Environmental Data

• MAX1976A.pdf

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