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MAX1963 Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX1963 Datasheet(HTML) 1 Page - Maxim Integrated Products |
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General Description The MAX1963/MAX1976 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 (MAX1963) or 70ms (MAX1976) after the output voltage reaches regulation. These devices are offered in 6-pin thin SOT23 and 6-pin 3mm x 3mm thin DFN packages. An internal PMOS pass transistor allows the low supply current to remain independent of load and dropout volt- age, making these devices ideal for portable battery-pow- ered equipment such as personal digital assistants (PDAs), cell phones, cordless phones, and notebook com- puters. Other features include logic-controlled shutdown, short-circuit protection, and thermal-overload protection. Applications Notebook Computers Cellular and PCS Telephones Personal Digital Assistants (PDAs) Hand-Held Computers Digital Cameras PCMCIA Cards CD and MP3 Players 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 (MAX1963) or 70ms (MAX1976) 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) ♦ Thin 6-Pin TDFN Package (<0.8mm High) Low-Input-Voltage, 300mA LDO Regulators with RESET in SOT and TDFN ________________________________________________________________ Maxim Integrated Products 1 Ordering Information 19-3040; Rev 2; 5/07 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. PART* TEMP RANGE PIN-PACKAGE PKG CODE MAX1963EZT_ _ _-T -40°C to +85°C 6 Thin SOT23-6 Z6-1 MAX1963ETT_ _ _-T -40°C to +85°C 6 TDFN T633-2 MAX1976EZT_ _ _-T -40°C to +85°C 6 Thin SOT23-6 Z6-1 MAX1976ETT_ _ _-T -40°C to +85°C 6 TDFN T633-2 TOP VIEW TDFN 3mm x 3mm I.C. OUT RESET GND IN SHDN 1 2 3 6 5 4 MAX1963 MAX1976 GND RESET SHDN 1 6 OUT IN MAX1963 MAX1976 THIN SOT23 2 3 4 I.C. 5 Pin Configurations *Insert the desired three-digit suffix (see the Selector Guide) into the blanks to complete the part number. Contact the factory for other output voltages. Selector Guide appears at end of data sheet. MAX1963 MAX1976 INPUT 1.62V TO 3.6V COUT 4.7 μF ON OFF IN CIN 1 μF 300mA SHDN GND OUTPUT 0.75V TO 3.0V LOGIC SUPPLY 100k Ω TO μC OUT RESET Typical Operating Circuit |
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