TC1262 500mA Fixed Output CMOS LDO Features Package Type Very Low Dropout Voltage 3-Pin DDPAK 3-Pin TO-220 500mA Output Current Front View Tab is GND Tab is GND High Output Voltage Accuracy Standard or Custom Output Voltages Over Current and Over Temperature Protection TC1262 TC1262 Applications 1 2 3 1 2 3 Battery Operated Systems Portable Computers 3-Pin SOT-223 Medical Instruments Front View Instrumentation Cellular/GSM/PHS Phones V 3 OUT Linear Post-Regulators for SMPS 2 GND Pagers Device Selection Table 1 V IN TC1262 Junction Part Number Package Temp. Range General Description TC1262-xxVDB 3-Pin SOT-223 -40C to +125C The TC1262 is a fixed output, high accuracy (typically TC1262-xxVAB 3-Pin TO-220 -40C to +125C 0.5%) CMOS low dropout regulator. Designed specif- TC1262-xxVEB 3-Pin DDPAK -40C to +125C ically for battery-operated systems, the TC1262s CMOS construction eliminates wasted ground current, NOTE: xx indicates output voltages. significantly extending battery life. Total supply current Available Output Voltages: 2.5, 2.8, 3.0, 3.3, 5.0. is typically 80A at full load (20 to 60 times lower than Other output voltages are available. Please contact Microchip in bipolar regulators). Technology Inc. for details. TC1262 key features include ultra low noise operation, very low dropout voltage (typically 350mV at full load), and fast response to step changes in load. The TC1262 incorporates both over temperature and over current protection. The TC1262 is stable with an output capacitor of only 1 F and has a maximum output current of 500mA. It is available in 3-Pin SOT-223, 3-Pin TO-220 and 3-Pin DDPAK packages. Typical Application V V V V IN IN OUT OUT + C1 TC1262 1F GND 2002-2012 Microchip Technology Inc. DS21373C-page 1 V IN GND V OUT Tab is GND V IN GND V OUTTC1262 *Stresses above those listed underAbsolute Maximum 1.0 ELECTRICAL Rating may cause permanent damage to the device. These CHARACTERISTICS are stress ratings only and functional operation of the device at these or any other conditions above those indicated in the Absolute Maximum Ratings* operation sections of the specifications is not implied. Exposure to Absolute Maximum Rating conditions for Input Voltage .........................................................6.5V extended periods may affect device reliability. Output Voltage.................. (V 0.3V) to (V + 0.3V) SS IN Power Dissipation................Internally Limited (Note 6) Maximum Voltage on Any Pin ........V +0.3V to -0.3V IN Operating Temperature Range...... -40C < T < 125C J Storage Temperature..........................-65C to +150C TC1262 ELECTRICAL SPECIFICATIONS Electrical Characteristics: V = V + 1V, I = 100 A, C = 3.3 F, T = 25C, unless otherwise noted. Boldface type IN OUT L L A specifications apply for junction temperatures of -40C to +125C. Symbol Parameter Min Typ Max Units Test Conditions V Input Operating Voltage 2.7 6.0 V Note 7 IN I Maximum Output Current 500 mA OUTMAX V Output Voltage V 0.5% V Note 1 OUT R V 2.5% V + 2.5% R R V /TV Temperature Coefficient 40 ppm/C Note 2 OUT OUT V /V Line Regulation .003 0.35 %/V (V + 1V) V 6V OUT IN R IN V /V Load Regulation 0.002 0.01 %/mA I = 0.1mA to I (Note 3) OUT OUT L OUTMAX V -V Dropout Voltage 20 30 mV I = 100A IN OUT L 60 130 I = 100mA L 200 390 I = 300mA L 350 650 I = 500mA (Note 4) L I Supply Current 80 130 AI = 0 DD L PSRR Power Supply Rejection Ratio 64 dB F 1kHz RE I Output Short Circuit Current 1200 mA V = 0V OUTSC OUT V /P Thermal Regulation 0.04 V/W Note 5 OUT D eN Output Noise 260 nV/ Hz I = I , F = 10kHz L OUTMAX RE Note 1: V is the regulator output voltage setting. R 6 2: TC V = (V V ) x 10 OUT OUTMAX OUTMIN V x T OUT 3: Regulation is measured at a constant junction temperature using low duty cycle pulse testing. Load regulation is tested over a load range from 0.1mA to the maximum specified output current. Changes in output voltage due to heating effects are covered by the thermal regulation specification. 4: Dropout voltage is defined as the input to output differential at which the output voltage drops 2% below its nominal value measured at a 1V differential. 5: Thermal Regulation is defined as the change in output voltage at a time T after a change in power dissipation is applied, excluding load or line regulation effects. Specifications are for a current pulse equal to I at V = 6V for T = 10 msec. LMAX IN 6: The maximum allowable power dissipation is a function of ambient temperature, the maximum allowable junction temperature and the thermal resistance from junction-to-air (i.e., T , T , ). Exceeding the maximum allowable power dissipation causes the device to initiate A J JA thermal shutdown. Please see Section 4.0 Thermal Considerations for more details. 7: The minimum V has to justify the conditions: V V + V and V 2.7V for I = 0.1mA to I . IN IN R DROPOUT IN L OUTMAX DS21373C-page 2 2002-2012 Microchip Technology Inc.