ISSUED DATE :2005/11/30 REVISED DATE : GSCLP2951 1 0 0 m A L o w - D r o p o u t Vo l t a g e R e g u l a t o r Description The GSCLP2951 is a low power voltage regulator. This device excellent choice for use in battery powered application such as cordless telephone, radio control systems, and portable computers. The device features very low quiescent current (75uA Typ.) and very low drop output voltage (Typ. 40mV at light load and 380mV at 100mA). This includes a tight initial tolerance of 0.5% typ., extremely good load and line regulation of 0.05% typ., and very low output temperature coefficient, marking the part useful as a low-power voltage reference. The error flag output feature is used as power-on reset for warns of a low output voltage, due to following batteries on input. Other feature is the logic-compatible shutdown input which enable the regulator to be switched on and off. The regulator output voltage may be pin-strapped for fixed output voltage or programmed from 1.24V to 29V with external pair of resistors. Features High accuracy output voltage Extremely low quiescent current and dropout voltage Extremely tight load and line regulation Current and thermal Limiting Very low temperature coefficient Error flag warns of output dropout Logic-Controlled electronic shutdown Applications Battery powered equipment Cellular Phones Portable/Palm top/Notebook computers Package Dimensions REF. A B C D E F Millimeter Min. Max. 5.80 4.80 3.80 0° 0.40 0.19 6.20 5.00 4.00 8° 0.90 0.25 REF. Millimeter Min. Max. M H L J K G 0.10 0.25 0.35 0.49 1.35 1.75 0.375 REF. 45° 1.27 TYP. Block Diagram and Typical Applications GSCLP2950 Page: 1/4 ISSUED DATE :2005/11/30 REVISED DATE : Absolute Maximum Ratings Parameter Symbol Ratings Input Voltage VCC -0.3 ~ +30 V Output Current IOUT 100 mA Feedback Input Voltage VFB -1.5 ~ +30 V Shutdown Input Voltage VSD -0.3 ~ +30 V V Error Comparator Output VCO -0.3 ~ +30 Storage Temperature Tstg -65 ~ +150 Maximum Junction Temperature Tjmax 150 Operating Junction Temperature Tj -55 ~ +150 Unit Electrical Characteristics (Ta=25 , VIN=15V, unless otherwise specified) (Note2) Parameter Output Voltage Condition GLP2950-2H GLP2950-30 GLP2950-33 GLP2950-50 100 A IO 100mA TJ TJMAX Line Regulation (Note3) VO+1 VIN 30V (Note4) Load Regulation (Note3) 100 A IO 100mA Current Limit VOUT =0 Output Voltage Temperature Coefficient (Note1) IO=100 A Dropout Voltage (Note5) IO=100mA IO=100 A Ground Current IO=100mA Dropout Ground Current VIN=VO-0.5V, IO=100 A Thermal Regulator CL=1 F Output Voltage Noise CL=200 F f=10Hz~100kHz CL=3.3 F (Bypass=0.01 F pins 7 to 1) Reference Voltage Reference Voltage Over Temperature(Note6) Feedback pin Bias Current Reference Voltage Temperature (Note1) Coefficient Feedback pin Bias Current Temperature Coefficient Error Comparator Output Leakage Current VOh=30V Output Low Voltage VIN=4.5V, IOL=400 A (Note7) Upper Threshold Voltage (Note7) Low Threshold Voltage (Note7) Hysteresis Shutdown Input Low (Regulator ON) Input Logic Voltage High (Regulator OFF) VS=2.4V Shutdown pin Input Current VS=30V VOUT =5.0V Regulator Output Current in Shutdown 3.3V VOUT<5.0V (Note8) 2.0V VOUT<3.30V GSCLP2950 Min 2.793 2.940 3.234 4.900 1.210 1.185 - TYP 2.85 3.00 3.30 5.00 0.04 0.1 160 50 50 380 75 8 110 0.05 430 160 100 1.235 20 Max 2.907 3.060 3.366 5.100 0.4 0.3 200 150 80 450 120 12 170 0.2 1.260 1.285 40 Unit - 50 - ppm/ - 0.1 - nA / 40 - 0.01 150 60 75 15 1.0 250 95 - 2 - 1.3 30 450 3 - 0.7 50 600 10 20 30 V % % mA ppm/ mV A mA A %/W Vrms V V nA A mV mV mV mV V A A Page: 2/4 ISSUED DATE :2005/11/30 REVISED DATE : Note 1: Output or reference voltage temperature coefficient is defined as the worst case voltage change divided by the total temperature range. Note 2: Unless otherwise specified all limits guaranteed for Tj=25 , Vin =Vo+1V, IL=100uA and CL=1uF. Additional conditions are feedback tied to GSCLP2951-XX tap and output tied to Sense (Vout=XX V) and Vshutdown 0.8V. Note 3: Regulations is measured at constant junction temperature, using pulse testing with a low duty cycle. Changes in output voltage due to heating effects are covered under the specification for thermal regulation. Note 4: Line regulation for GSCLP2951-XX is tested at 150 for IL=1mA. For IL=100uA and Tj=125 , line regulation is guaranteed by design to 0.2%. See typical performance characteristics for line regulation versus temperature and load current. Note 5: Dropout voltage is defined as the input to output differential at which the output voltage drops 100mV below its nominal value measured at 1V differential. At very low values of programmed output voltage, the minimum input supply voltage of 2V (2.3V over temperature) must be taken into account. Note 6: Vref Vout (Vin-1V), 2.3V Vin 30V, 100uA IL 100mA, Tj Tjmax. Note 7: Comparator thresholds are expressed in terms of a voltage differential at the feedback terminal below the nominal reference voltage measured at Vo + 1V input. To express these thresholds in terms of output voltage change, multiply by the error amplifier gain = Vout/Vref = (R1+R2)/R2. For example, at a programmed output voltage of 5V, the error output is guaranteed to go low when the output drops by 95mV x 5V/1.235V=384mV. Thresholds remain constant as a percent of Vout as Vout is varied, with the dropout warning occurring at typical 5% below nominal, 7.5% guaranteed. Note 8: Vshutdown 2V, Vin 30V, Vout=0, Feed-back pin tied to –XX V Tap. Characteristics Curve Fig 2. Input Current (uA) Fig 1. Dropout Characteristics Fig 3. Dropout Voltage GSCLP2950 Fig 4. Ground Pin Current Page: 3/4 ISSUED DATE :2005/11/30 REVISED DATE : Fig 5. Ground Pin Current Fig 6. Dropout Voltage Fig 7. Short Circuit Current Fig 8. Shutdown Threshold Voltage Fig 9. Feedback Bias Current Fig 10. Error Comparator Output Important Notice: All rights are reserved. Reproduction in whole or in part is prohibited without the prior written approval of GTM. GTM reserves the right to make changes to its products without notice. GTM semiconductor products are not warranted to be suitable for use in life-support Applications, or systems. GTM assumes no liability for any consequence of customer product design, infringement of patents, or application assistance. Head Office And Factory: Taiwan: No. 17-1 Tatung Rd. Fu Kou Hsin-Chu Industrial Park, Hsin-Chu, Taiwan, R. O. C. TEL : 886-3-597-7061 FAX : 886-3-597-9220, 597-0785 China: (201203) No.255, Jang-Jiang Tsai-Lueng RD. , Pu-Dung-Hsin District, Shang-Hai City, China TEL : 86-21-5895-7671 ~ 4 FAX : 86-21-38950165 GSCLP2950 Page: 4/4