TC1223/TC1224 50mA and 100mA CMOS LDOs with Shutdown Features General Description Extremely Low Ground Current for Longer Battery The TC1223 and TC1224 are high accuracy (typically Life 0.5%) CMOS upgrades for older (bipolar) low dropout regulators such as the LP2980. Designed specifically Very Low Dropout Voltage for battery-operated systems, the devices CMOS Choice of 50mA and 100mA Output (TC1223, construction eliminates wasted ground current, TC1224, Respectively) significantly extending battery life. Total supply current High Output Voltage Accuracy is typically 50A at full load (20 to 60 times lower than Standard or Custom Output Voltages in bipolar regulators). Power Saving Shutdown Mode The devices key features include ultra low noise Over Current and Over Temperature Protection operation very low dropout voltage (typically 85mV, Space-Saving 5-Pin SOT-23A Package TC1223 and 180mV, TC1224 at full load) and fast Pin Compatible Upgrades for Bipolar Regulators response to step changes in load. Supply current is reduced to 0.5 A (max) and V falls to zero when OUT Applications the shutdown input is low. The devices incorporate both Battery Operated Systems over temperature and over current protection. Portable Computers The TC1223 and TC1224 are stable with an output Medical Instruments capacitor of only 1 F and have a maximum output current of 50mA and 100mA respectively. For higher Instrumentation output current versions, please see the TC1107, Cellular/GSM/PHS Phones TC1108 and TC1173 (I = 300mA) data sheets. OUT Linear Post-Regulators for SMPS Pagers Typical Application Device Selection Table 1 5 V V V V IN IN OUT OUT Junction + Part Number Package TC1223 1F Temp. Range TC1224 TC1223-xxVCT 5-Pin SOT-23A -40C to +125C 2 GND TC1224-xxVCT 5-Pin SOT-23A -40C to +125C NOTE: xx indicates output voltages Available Output Voltages: 2.5, 2.7, 2.8, 2.85, 3.0, 3.3, 3.6, 3 4 4.0, 5.0. SHDN NC Other output voltages are available. Please contact Microchip Technology Inc. for details. Package Type 5-Pin SOT-23A V OUT NC Shutdown Control (from Power Control Logic) 4 5 TC1223 TC1224 132 V GND SHDN IN NOTE: 5-Pin SOT-23A is equivalent to the EIAJ (SC-74A) 2002-2012 Microchip Technology Inc. DS21368C-page 1TC1223/TC1224 Stresses above those listed underAbsolute Maximum 1.0 ELECTRICAL SPECIFICATIONS Rating may cause permanent damage to the device. These Absolute Maximum Ratings* are stress ratings only and functional operation of the device at these or any other conditions above those indicated in the Input Voltage .........................................................6.5V operation sections of the specifications is not implied. Output Voltage........................... (-0.3V) to (V + 0.3V) Exposure to Absolute Maximum Rating conditions for IN extended periods may affect device reliability. Power Dissipation..............................Internally Limited Maximum Voltage on Any Pin ........V +0.3V to -0.3V IN Operating Temperature Range...... -40C < T < 125C J Storage Temperature..........................-65C to +150C TC1223/TC1224 ELECTRICAL SPECIFICATIONS Electrical Characteristics: V = V + 1V, I = 100 A, 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 8 IN I Maximum Output Current 50 mA TC1223 OUTMAX 100 TC1224 V Output Voltage V 2.5% V 0.5% V + 2.5% V Note 1 OUT R R R 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 %I = 0.1mA to I OUT OUT L OUTMAX (Note 3) V -V Dropout Voltage 2 mV I = 100 A IN OUT L 65 I = 20mA L 85 120 I = 50mA L TC1224 180 250 I = 100mA (Note 4) L I Supply Current 50 80 A SHDN = V , I = 0 (Note 7) 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 SHDN Input V SHDN Input High Threshold 45 %V V = 2.5V to 6.5V IH IN IN V SHDN Input Low Threshold 15 %V V = 2.5V to 6.5V IL IN IN 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 0.1mA 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 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 MAX at V = 6V for T = 10 msec. L 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: Apply for Junction Temperatures of -40C to +85C. 8: 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 DS21368C-page 2 2002-2012 Microchip Technology Inc.