TC1072/TC1073 50mA and 100mA CMOS LDOs with Shutdown, ERROR Output and V Bypass REF Features: General Description 50 A Ground Current for Longer Battery Life The TC1072 and TC1073 are high accuracy (typically 0.5%) CMOS upgrades for older (bipolar) low dropout Very Low Dropout Voltage regulators. Designed specifically for battery-operated Choice of 50 mA (TC1072) and 100 mA (TC1073) systems, the devices CMOS construction eliminates Output wasted ground current, significantly extending battery High Output Voltage Accuracy life. Total supply current is typically 50 A at full load Standard or Custom Output Voltages (20 to 60 times lower than in bipolar regulators). Power-Saving Shutdown Mode The devices key features include ultra low noise Output Can Be Used as a Low Battery ERROR operation (plus optional Bypass input) very low Detector or Processor Reset Generator dropout voltage (typically 85 mV, TC1072 and 180 mV, Bypass Input for Ultra Quiet Operation TC1073 at full load) and fast response to step changes ) is asserted when the in load. An error output (ERROR Overcurrent and Overtemperature Protection devices are out-of-regulation (due to a low input Space-Saving 6-Pin SOT-23 Package voltage or excessive output current). ERROR can be Pin Compatible Upgrades for Bipolar Regulators used as a low battery warning or as a processor Standard Output Voltage Options: RESET signal (with the addition of an external RC - 1.8V, 2.5V, 2.6V, 2.7V, 2.8V, 2.85V, 3.0V, network). Supply current is reduced to 0.5 A (max) 3.3V, 3.6V, 4.0V, 5.0V and ERROR are disabled when the and both V OUT Other output voltages are available. Please shutdown input is low. The devices incorporate both contact Microchip Technology Inc. for details. overtemperature and overcurrent protection. The TC1072 and TC1073 are stable with an output Applications: capacitor of only 1 F and have a maximum output current of 50 mA, and 100 mA, respectively. For higher Battery Operated Systems output current versions, please see the TC1185, Portable Computers =150mA) and TC1107, TC1186, TC1187 (I OUT Medical Instruments TC1108 and TC1173 (I = 300 mA) data sheets. OUT Instrumentation Cellular/GSM/PHS Phones Package Type Linear Post-Regulators for SMPS 6-Pin SOT-23 Pagers V Bypass ERROR OUT Typical Application Circuit 5 6 4 R P 1 6 V V V V IN IN OUT OUT + TC1072 1 F TC1073 2 5 GND Bypass C BYPASS 1 2 3 470 pF V GND SHDN IN 3 4 ERROR SHDN ERROR Shutdown Control (from Power Control Logic) 2007 Microchip Technology Inc. DS21354D-page 1TC1072/TC1073 Note: Stresses above those listed underAbsolute 1.0 ELECTRICAL Maximum Rating may cause permanent damage to CHARACTERISTICS the device. These are stress ratings only and functional operation of the device at these or any other conditions Absolute Maximum Ratings above those indicated in the operation sections of the specifications is not implied. Exposure to Absolute Input Voltage .........................................................6.5V Maximum Rating conditions for extended periods may + 0.3V) Output Voltage........................... (-0.3V) to (V IN affect device reliability. Power Dissipation................Internally Limited (Note 6) Maximum Voltage on Any Pin ........V +0.3V to -0.3V IN < 125C Operating Temperature Range...... -40C < T J Storage Temperature..........................-65C to +150C TC1072/TC1073 ELECTRICAL SPECIFICATIONS Electrical Characteristics: Unless otherwise noted, V =V + 1V, I = 0.1 mA, C =3.3 F, SHDN>V , T =+25C. IN OUT L L IH A Boldface 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 9 IN I Maximum Output Current 50 mA TC1072 OUTMAX 100 mA TC1073 V Output Voltage V V 0.5% V + 2.5% V Note 1 OUT R R R 2.5% TCV V Temperature Coefficient 20 ppm/C Note 2 OUT OUT 40 V /V Line Regulation 0.05 0.35 %(V + 1V) V 6V OUT IN R IN V /V Load Regulation 0.5 2.0 %I = 0.1 mA to I OUT OUT L OUTMAX (Note 3) V -V Dropout Voltage 2 mV I =0.1mA IN OUT L 65 I =20mA L 85 120 I =50mA L 180 250 I = 100 mA (Note 4), L TC1073 I Supply Current 50 80 A SHDN =V , I =0 (Note 8) IN IH L I Shutdown Supply Current 0.05 0.5 A SHDN =0V INSD PSRR Power Supply Rejection Ratio 64 dB F 1kHz RE I Output Short Circuit Current 300 450 mA V =0V OUTSC OUT V /P Thermal Regulation 0.04 V/W Notes 5, 6 OUT D T Thermal Shutdown Die Temperature 160 C SD T Thermal Shutdown Hysteresis 10 C SD eN Output Noise 260 nV/Hz I =I L OUTMAX 470 pF from Bypass to GND Note 1: V is the regulator output voltage setting. For example: V = 2.5V, 2.7V, 2.85V, 3.0V, 3.3V, 3.6V, 4.0V, 5.0V. R 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 0.1 mA 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. 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 ms. 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 5.0 Thermal Considerations for more details. 7: Hysteresis voltage is referenced by V . R 8: Apply for Junction Temperatures of -40C to +85C. 9: The minimum V has to justify the conditions = V V +V and V 2.7V for I = 0.1 mA to I . IN IN R DROPOUT IN L OUTMAX DS21354D-page 2 2007 Microchip Technology Inc.