TS2940 Taiwan Semiconductor 1A Ultra Low Dropout Voltage Regulator GENERAL DESCRIPTION FEATURES The TS2940 series of fixed-voltage monolithic micro- Dropout voltage typically 0.6V Io=800mA power voltage regulators is designed for a wide range of Output current up to 1A applications. This device excellent choice of use in Output voltage trimmed before assembly battery-power application. Furthermore, the quiescent -18V Reverse peak voltage current increases on slightly at dropout, which prolongs +30V Input over voltage protection battery life. This series of fixed-voltage regulators +60V Transient peak voltage features low drop output voltage (Typ. 60mV at light Internal current limit load and 600mV at 800mA). This includes a tight initial Thermal shutdown protection tolerance of 2%, extremely good line regulation of 0.05% typ., and very low output temperature coefficient. APPLICATION Post Regulator for SMPS Industrial Instrumentation 2 TO-220 TO-263 (D PAK) TO-252 (DPAK) SOT-223 Pin Definition: 1. Input 2. Ground 3. Output Notes: Moisture sensitivity level: level 3. Per J-STD-020 TYPICAL APPLICATION CIRCUIT Document Number: DS P0000211 1 Version: D15 TS2940 Taiwan Semiconductor ABSOLUTE MAXIMUM RATINGS (T = 25C unless otherwise noted) A PARAMETER SYMBOL LIMIT UNIT (Note 2) Input Supply Voltage V IN -18 ~ +60 V Input Supply Voltage V 26 V OPR (Note 3) Power Dissipation P Internally Limited W D Operating Junction Temperature Range C T -40 ~ +125 J Storage Temperature Range T -65 ~ +150 C STG THERMAL PERFORMANCE PARAMETER PACKAGE TYPE SYMBOL LIMIT UNIT TO-220 60 Thermal Resistance TO-263 80 R C/W JA Junction to Ambient TO-252 150 SOT-223 170 Notes: R is the sum of the junction-to-case and case-to-ambient thermal resistances. The case thermal reference is defined JA at the solder mounting surface of the drain pins. R is guaranteed by design while R is determined by the users board JA CA design. R shown below for single device operation on FR-4 PCB in still air. JA ELECTRICAL SPECIFICATIONS (V =V +1V, I =5mA, C =22F, T =25C, unless otherwise noted) IN OUT L O A PARAMETER CONDITIONS MIN TYP MAX UNIT Input Supply Voltage -- -- 26 V 5mA I 800mA, 5.0 L Output Voltage 0.970 Vo 1.030 Vo V Vo+5V V 26V 3.3 IN Output Voltage Temperature -- 50 150 ppm/C Coefficient Line Regulation Vo+2V V 26V -- 0.05 0.5 % IN Load Regulation 5mA I 800mA -- 0.2 1.0 % L I =100mA -- 100 200 L (Note 4) I =500mA Dropout Voltage -- 300 500 mV L I =800mA -- 600 800 L I =5mA -- 10 15 L (Note 5) Quiescent Current mA I =800mA -- 75 110 L (Note 6) Short Circuit Current V =0 -- -- 1.5 A OUT C =2.2F L -- 500 -- Output Noise, C =3.3F L -- 350 -- Vrms 10Hz to 100KHz, I =10mA L C =33F L -- 120 -- Document Number: DS P0000211 2 Version: D15