TC2117 800 mA Fixed Low Dropout Positive Regulator Features: General Description: Fixed Output Voltages: 1.8V, 2.5V, 3.0V, 3.3V The TC2117 is a fixed, high-accuracy (typically 0.5%) CMOS low dropout regulator. Designed specifically for Very Low Dropout Voltage battery operated systems, the TC2117s CMOS Rated 800 mA Output Current construction eliminates wasted ground current, High Output Voltage Accuracy significantly extending battery life. Total supply current Standard or Custom Output Voltages is typically 80 A at full load (20 to 60 times lower than Overcurrent and Overtemperature Protection in bipolar regulators). Space Saving SOT-223 Package TC2117 key features include ultra low noise, very low dropout voltage (typically 450 mV at full load), and fast Applications: response to step changes in load. The TC2117 incorporates both overtemperature and overcurrent 5V to 3.3V Linear Regulator protection. The TC2117 is stable with an output Portable Computers capacitor of only 1F and has a maximum output Instrumentation current of 800 mA. This device is available in 3-Pin Battery Operated Systems SOT-223 and 3-Pin DDPAK packages. Linear Post-Regulator for SMPS Package Types Core Voltage Supply for FPGAs, PLDs, CPUs and DSPs 3-Pin SOT-223 3-Pin DDPAK Front View Front View Typical Application Tab is V OUT V IN TC2117 V V V IN OUT OUT C 1 C 2 V OUT 1F TC2117 1F Battery 12 3 GND GND TC2117 2010 Microchip Technology Inc. DS21665D-page 1 Tab is V OUT 1 2 3 GND V OUT V INTC2117 Notice: Stresses above those listed underAbsolute 1.0 ELECTRICAL Maximum Rating may cause permanent damage to the CHARACTERISTICS device. These are stress ratings only and functional operation of the device at these or any other conditions above those Absolute Maximum Ratings indicated in the 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 0.3) to (V + 0.3V) SS IN Power Dissipation................Internally Limited (Note 7) Maximum Voltage on Any Pin .........V +0.3V to -0.3V IN Operating Temperature ............... -40C < T < +125C J Storage temperature ..........................-65C to +150C DC CHARACTERISTICS Electrical Specifications: Unless otherwise indicated, V = V + 1.5V, (Note 1), I = 100 A, C = 3.3 F, T = +25C. IN R L L A Boldface type specifications apply for junction temperatures of -40C to +125C. Parameters Sym Min Typ Max Units Conditions Input Operating Voltage V 2.7 6.0 V Note 2 IN Maximum Output Current I 800 mA OUTMAX Output Voltage V V 2.5% V 0.5% V + 2.5% VV 2.5V OUT R R R R V 2% V 0.5% V + 3% V = 1.8V R R R R V Temperature Coefficient V /T 40 ppm/C Note 3 OUT OUT Line Regulation V / V 0.007 0.35 %(V + 1V) V 6V OUT IN R IN Load Regulation (Note 4) V /V -0.01 0.002 0 %/mA I = 0.1 mA to I OUT OUT L OUTMAX Dropout Voltage (Note 5) V V 20 30 mV V 2.5V, I = 100 A IN OUT R L 50 160 V 2.5V, I = 100 mA R L 150 480 V 2.5V, I = 300 mA R L 260 800 V 2.5V, I = 500 mA R L 450 1300 V 2.5V, I = 800 mA R L 1000 1200 V = 1.8V, I = 500 mA R L 1200 1400 I = 800 mA L Supply Current I 80 130 A SHDN = V , I = 0 DD IH L Power Supply Rejection Ratio PSRR 55 db F 1kHz Output Short Circuit Current I 1200 mA V = 0V OUTSC OUT Thermal Regulation V / P 0.04 V/W Note 6 OUT D Output Noise eN 300 nV/ Hz I = 100 mA, F = 10 kHZ L Note 1: V is the regulator output voltage setting. R 2: 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 6 3: V V 10 OUTMAX OUTMIN TCV = ------------------------------------------------------------------------- OUT V T OUT 4: 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. 5: Dropout voltage is defined as the input-to-output differential at which the output voltage drops 2% below its nominal value measured at a 1.5V differential. 6: 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 7: 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 A J JA dissipation causes the device to initiate thermal shutdown. Please see Section 4.2 Thermal Considerations for more details. DS21665D-page 2 2010 Microchip Technology Inc.