TC1107 300mA CMOS LDO with Shutdown and V Bypass REF Features General Description Extremely Low Supply Current (50 A, Typ.) The TC1107 is a fixed output, high accuracy (typically 0.5%) CMOS upgrade for older (bipolar) low dropout Very Low Dropout Voltage regulators. Total supply current is typically 50 Aatfull 300mA Output Current load (20 to 60 times lower than in bipolar regulators). High Output Voltage Accuracy TC1107 key features include ultra low noise operation Standard or Custom Output Voltages (plus optional Bypass input) very low dropout voltage Power Saving Shutdown Mode (typically 240mV at full load), and fast response to step Bypass Input for Ultra Quiet Operation changes in load. Supply current is reduced to 0.05 A Over Current and Over Temperature Protection (typical) and V falls to zero when the shutdown OUT input is low. Space-Saving MSOP Package Option The TC1107 incorporates both over temperature and Applications over current protection. The TC1107 is stable with an output capacitor of only 1 F and has a maximum Battery Operated Systems output current of 300mA. Portable Computers Medical Instruments Typical Application Instrumentation 1 8 Cellular/GSM/PHS Phones V V V V OUT IN OUT IN + C1 Linear Post-Regulators for SMPS 1 F Pagers 7 2 GND NC Device Selection Table TC1107 6 3 Junction NC NC Part Number Package Temp. Range TC1107-xxVOA 8-Pin SOIC -40C to +125C 4 5 Bypass SHDN TC1107-xxVUA 8-Pin MSOP -40C to +125C C BYPASS NOTE: xx indicates output voltages 470pF Available Output Voltages: 2.5, 2.8, 3.0, 3.3, 5.0. (Optional) Shutdown Control Other output voltages are available. Please contact Microchip (from Power Control Logic) Technology Inc. for details. Package Type 8-Pin MSOP 8-Pin SOIC 1 8 V V OUT IN V 1 8 V OUT IN 2 7 GND NC TC1107VUA GND NC 2 7 3 6 NC NC TC1107VOA 4 5 NC 3 6 NC Bypass SHDN Bypass 4 5 SHDN 2002 Microchip Technology Inc. DS21356B-page 1TC1107 *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 TC1107 ELECTRICAL SPECIFICATIONS Electrical Characteristics: V =V +1V, I =0.1mA,C =3.3 F, SHDN>V ,T = 25C, unless otherwise noted. Boldface IN OUT L L IH A type 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 300 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 0.05 0.35 %(V +1V) V 6V OUT IN R IN V /V Load Regulation 1.1 2.0 %I = 0.1mA to I OUT OUT L OUTMAX V -V Dropout Voltage 20 30 mV I =0.1mA IN OUT L 80 160 I =100mA L 270 480 I =300mA (Note 4) L I Supply Current 50 90 A SHDN =V SS1 IH, I Shutdown Supply Current 0.05 0.5 A SHDN =0V SS2 PSRR Power Supply Rejection Ratio 60 dB F 1kHz RE I Output Short Circuit Current 550 650 mA V =0V OUTSC OUT V / P Thermal Regulation 0.04 V/W Note 5 OUT D eN Output Noise 260 nV/Hz F=1kHz,C =1 F, OUT R =50 LOAD SHDN Input V SHDN Input High Threshold 45 %V IH IN V SHDN Input Low Threshold 15 %V IL IN Note 1: V is the regulator output voltage setting. R 6 2: TC V =(V V )x10 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 DS21356B-page 2 2002 Microchip Technology Inc.