ISSUED DATE :2004/12/22 REVISED DATE : G2123 C M O S P o s i t i v e Vo l t a g e R e g u l a t o r Description The G2123 series of positive, linear regulators feature low quiescent current (30 A typ.) with low dropout voltage, making them ideal for battery applications. These rugged devices have both Thermal Shutdown, and Current Fold-back to prevent device failure under the “Worst” of operating conditions. The G2123 is stable with an output capacitance of 2.2 F or greater. Features Block Diagram Very Low Dropout Voltage Guaranteed 300mA output Over-Temperature Shutdown Current Limiting Short Circuit Current Fold-back Factory Pre-set Output Voltage Highly Accurate± 1.5% Temperature Coefficient Applications Battery Powered Widgets Instrumentation Wireless Devices Cordless Phones PC Peripherals Portable Electronics Electronic Scales Package Dimensions D TO-92 E A S1 b1 SEATING PLANE L REF. e1 e b C A S1 b b1 C Millimeter Min. Max. 4.45 4.7 1.02 0.36 0.51 0.36 0.76 0.36 0.51 REF. D E L e1 e Millimeter Min. Max. 4.44 4.7 3.30 3.81 12.70 1.150 1.390 2.42 2.66 Typical Application Circuit 1/5 ISSUED DATE :2004/12/22 REVISED DATE : Absolute Maximum Ratings Parameter Symbol Ratings Unit Input Voltage VIN 8 V Output Current IOUT PD/(VIN-VO) mA Output Voltage VOUT 1.3~3.8 V Operating Ambient Temperature Topr -40 ~ +85 Tj -40 ~ +125 Tj Max 150 Junction Temperature Maximum Junction Temperature jc 80 /W ja 180 /W PD 625 mW Thermal Resistance Power Dissipation( T=100 ) EDS Classification B Electrical Characteristics Ta=25 Parameter Output Voltage Output Current Current Limit Load Regulation Dropout Voltage Symbol VOUT (E) VIN=VOUT(T)+1V, IO=1mA -1.5% IO VIN=VOUT(T)+2V, VOUT VOUT(E)*0.96 300 - ILIM REGLOAD VO>1.2V 300 VIN=VOUT(T)+2V, IO=1mA to 300mA -1 VDROPOUT 1.3V VOUT(T) 2.0V IO=300mA VO=VOUT(E)-2% 2.0V<VOUT(T) 2.8V (Note1) Condition Min 2.8V<VOUT(T) Quiescent Current Line Regulation IQ VIN= VOUT(T)+1V Over Temperature Shutdown Over Temperature Hysterisis Unit 1.5% V - mA 450 - mA 0.2 1 % - - 1300 - - 400 - - 300 - 30 50 - 0.2 (Note2) 1.4V -0.2 1.4V<VOUT(T) 2.0V -0.15 - 0.15 -0.1 0.02 0.1 -0.4 0.2 0.4 VIN OTS OTH Note3 - 7 - 150 - - 30 - TC - 30 - - 150 300 REGLINE Output Voltage Temperature Coefficient Short Circuit Current(Note4) Power Supply Rejection Max 1.3V VOUT(T) IO=1mA VIN=VOUT(T)+1 to VOUT(T)+2 2.0V<VOUT(T)<4 4.0V VOUT(T) Input Voltage TYP VOUT(T) ISC VIN=VOUT(T)+1V VOUT=0V PSRR Io=100mA Co=2.2 F eN f=10Hz~100kH z Io=10mA Output Voltage Noise f=1kHz - 50 - f=10kHz - 20 - f=100kHz - 15 - Co=2.2 F - 30 - mV A % V ppm/ mA dB Vrms Note 1: VOUT (E) =Effective Output Voltage (i.e. the output voltage when “VOUT (T) +1.0V” is provided at the VIN pin while maintaining a certain IOUT value). 2: VOUT (T) =Specified Output Voltage 3: V IN (MIN) =VOUT+V DROPOUT 4: To prevent the Short Circuit Current protection feature from being prematurely activated, the input voltage must be applied before a current source load is applied. 2/5 ISSUED DATE :2004/12/22 REVISED DATE : Ordering Information ( contd.) Part Number G2123-15 G2123-25 G2123-2H G2123-29 G2123-31 G2123-34 G2123-36 G2123-38 Marking 3P152 XX 3P252 XX 3P2H2 XX 3P292 XX 3P312 XX 3P342 XX 3P362 XX 3P382 XX Output Voltage Part Number 1.5V G2123-18 2.5V G2123-27 2.85V G2123-28 2.9V G2123-30 3.1V G2123-33 3.4V 3.6V G2123-35 G2123-37 Marking 3P182 XX 3P272 XX 3P282 XX 3P302 XX 3P332 XX 3P352 XX 3P372 XX Output Voltage 1.8V 2.7V 2.8V 3.0V 3.3V 3.5V 3.7V 3.8V Characteristics Curve 3/5 ISSUED DATE :2004/12/22 REVISED DATE : 4/5 ISSUED DATE :2004/12/22 REVISED DATE : 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 5/5