TS2951 Taiwan Semiconductor 150mA Ultra Low Dropout Voltage Regulator DESCRIPTION FEATURES The TS2951 are low power voltage regulators. These Output voltage available in 5V, 3V & 3.3V devices are excellent choice for use in battery-powered Extremely low quiescent current applications such as cordless telephone, radio control Low dropout voltage systems, and portable computers. Extremely tight load and line regulation The TS2951 is features very low quiescent current Very low temperature coefficient (75A Typ.) and very low drop output voltage (Typ. Need only 1F for stability 40V at light load and 380mV at 100mA). This includes Use as Regulator or Reference a tight initial tolerance of 1% (A version), extremely Stable with low-ESR output capacitors good load and line regulation 0.05% typ. and very low Current and thermal limiting output temperature coefficient, making the TS2951 Error Flag warns of output dropout useful as a low-power voltage reference. Logic-Controlled electronic shutdown TS2951 have other key additional feature. The error flag Additional voltage tap output feature is used as power-on reset for warn of a Output voltage sense low output voltage, due to following batteries on input. Output programmable from 1.24 to 29V The logic-compatible shutdown input which enable the APPLICATION regulator to be switched on/off. The regulator output Battery powered systems voltage may be pin-strapped for a 5.0 & 3.3 & 3.0 of SMPS Post-Regulator and Voltage Reference programmed from 1.24V to 29V with external pair of Voltage Reference resistors. Using of as design, processing and testing Portable consumer equipment techniques make TS2951 superior over similar products. SOP-8 Pin Definition: 1. Output 5. Error flag 2. Sense 6. Voltage tap 3. Shutdown 7. FB 4. Ground 8. Input Notes: Moisture sensitivity level: level 3. Per J-STD-020 TYPICAL APPLICATION CIRCUIT Adjustable Regulator Document Number: DS P0000207 1 Version: G15 TS2951 Taiwan Semiconductor ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL LIMIT UNIT -0.3 ~ +30 V Input Supply Voltage V IN V -1.5 ~ +30 V Feedback Input Voltage FB Shutdown Input Voltage V -0.3 ~ +30 V SHUTDOWN V -0.3 ~ +30 V Error Comparator Output Voltage ERROR P Internally Limited W Power Dissipation D o -40 ~ +125 C Operating Junction Temperature Range T J o T -65 ~ +150 C Storage Temperature Range STG THERMAL PERFORMANCE PARAMETER SYMBOL LIMIT UNIT Junction to Case Thermal Resistance R 45 C/W JC Junction to Ambient Thermal Resistance R 180 C/W JA 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 o ELECTRICAL SPECIFICATIONS (V =V +1V, T =25 C, unless otherwise specified.) IN OUT A (Note 2) PARAMETER CONDITIONS MIN TYP MAX UNIT o T =25 C 0.985 1.015 J 5.0 Output Voltage Full Operating temp 0.980 3.3 1.020 V 3.0 100uA I 100mA 0.975 1.025 L -- 50 150 Output Voltage Temperature o ppm/ C (Note 1) Coefficient -- 20 100 (Note 3) (Note 4) Line Regulation 6V V 30V -- 0.04 0.2 % IN (Note 3) Load Regulation 100A I 100mA -- 0.1 0.3 % L I =100A 50 80 mV L (Note 5) Dropout Voltage -- I =100mA 380 450 mV L I =100A 75 120 A L -- Ground Current I =100mA 8 12 mA L Dropout Ground Current V = 4.5V, I = 100uA -- 110 170 A IN L Current Limit V = 0 -- 160 200 mA OUT -- 0.05 0.2 %W Thermal Regulation -- C = 1F 430 -- L Output Noise, 10Hz to 100KHz -- 100 V/ rms C = 3.3F -- L Bypass=0.01uF -- C = 200F 160 -- L 1.21 1.235 1.27 V V V (Vin-1V), REF OUT (Note 6) Reference Voltage 2.3 Vin 30V, 1.185 1.235 1.285 V 100uA I 100mA, L T T (max) J J Document Number: DS P0000207 2 Version: G15