Pb Free Plating Product ISSUED DATE :2005/10/26 REVISED DATE : GSC103 D u a l O P - AM P an d 2 . 5V ±0. 7 % Vo l ta g e R ef e r en c e Description The GSC103 consists of 2 low-offset voltage amplifiers and a high-accuracy 2.5V voltage reference in SOP-8 package. The GSC103 provides a low cost and space saving solution for the application such as power supply and switching adapters. The GSC103 is available in a SOP-8 package. It can operate over the ambient temperature range from -40 to 105 . Features Precision ±0.7% Voltage Reference Vref sinking Current Capability:1mA to 100mA Low input Offset Voltage Max. 27V Voltage Rating Applications Switching Power Supply Adapter Portable Device Package Dimensions REF. A B C D E F Typical Circuit 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. M H L J K G Millimeter Min. Max. 0.10 0.25 0.35 0.49 1.35 1.75 0.375 REF. 45 1.27 TYP. Block Diagram GSC103 Fig 1. CC/CV Control for Switching Adapters GSC103 Page: 1/4 ISSUED DATE :2005/10/26 REVISED DATE : Pin Descriptions Pin 1 2 3 4 5 6 7 8 Name OUT1 IN1IN1+ GND IN2+ IN2OUT2 VCC Function Output of Op-amp 1 Negative terminal of Op-amp 1 Positive terminal of Op-amp 1, connected to internal reference voltage Ground Positive terminal of Op-amp 2 Negative terminal of Op-amp 2 Output of Op-amp 2 Supply voltage Absolute Maximum Ratings Parameter Supply Voltage VCC Differential Input Voltage(IN1+ to IN1-, IN2+ to IN2-) Input Voltage Maximum Junction Temperature Operating Ambient Temperature Range Storage Temperature Range Lead Temperature (PB Free, 10sec) Junction-to-Ambient Thermal Resistance ESD Level (Human Body Model) Ratings 27 27 -0.3 ~ VCC+0.3V 150 -40 ~ + 105 -65 ~ + 150 260 160 2k Unit V V V /W V Caution: Stresses beyond the ratings in “Absolute maximum ratings” may cause permanent damage to the device. This is a stress only rating and operation of device at these or any other conditions above those indicated in the operational sections of this specification is not limited. Electrical Characteristics Parameter Test Conditions VCC=5V, -40 ~105 Total Supply Current (No Load) VCC=27V, -40 ~105 (VCC=+5V, TA=+25 unless otherwise stated) Parameter OP-Amp1 & OP-Amp2 Input Offset Voltage (Common mode Voltage=0V) Input Offset Voltage Drift Input Bias Current (OP1) Test Conditions 25 -40 ~105 25 25 Input Bias Current (OP2) -40 ~105 VCC=15V, VO=2V Output Source Current Differential Input Voltage=1V VCC=15V, VO=2V Differential Input Voltage=-1V Output Sink Current VCC=15V, VO=0.2V Differential Input Voltage=-1V Output Short Current VCC=15V VCC=27V, RL=2k , 25 VCC=27V, RL=2k , -40 ~105 Output Voltage – High Level VCC=27V, RL=10k , 25 VCC=27V, RL=10k , -40 ~105 RL=10k , 25 Output Voltage – Low Level RL=10k , -40 ~105 Common mode Voltage=0V Large Signal Voltage Gain (OP1) VCC=15V, RL=2k VO=1.4V~11.4V, -40 ~105 VCC=15V, RL=2k , VO=1.4V~11.4V, 25 Large Signal Voltage Gain (OP2) VCC=15V, RL=2k , VO=1.4V~11.4V, -40 ~105 GSC103 Min Typ Max Unit - 0.7 - 1.2 2 mA Min Typ Max Unit - 1 7 20 20 - 4 5 150 200 20 40 - mA 10 - - mA 12 50 - A 23 23 24 24 - 40 24 25 5 - 60 20 20 mA - 100 - V/mV 50 25 100 - - V/mV mV V/ nA nA V mV Page: 2/4 ISSUED DATE :2005/10/26 REVISED DATE : Slew Rate at Unity Gail VIN=0.5V~2V, VCC=15V RL=2k , CL=100pF, Unity Gain Common mode Voltage=0V, VCC=5~27V VCC=27V, RL=2k , CL=100pF, f=100kHz, VIN=10mV VCC=27V, RL=2k , CL=100pF VO=2VPP, f=1kHz, AV=20dB 0.2 0.4 - V/ S 65 0.5 100 0.9 - dB MHz - 0.02 - % 0 0 70 60 - 2 85 50 75 150 VCC-1.5 VCC-2 - Reference Voltage (IK=10mA) 1 2.482 2.465 2.500 2.500 100 2.518 2.535 mA 25 -40 ~105 Reference Input Voltage Deviation Over Temperature Range(IK=10mA) -40 ~105 - 7 30 mV - 0.5 1 mA - 0.2 0.5 Supply Voltage Rejection Ratio Gain Bandwidth Product Total Harmonic Distortion OP-Amp2 Input Offset Current Input Common Mode Voltage Range Common Mode Rejection Ratio Equivalent Input Noise Voltage Reference Voltage Cathode Current 25 -40 ~105 VCC=27V, 25 VCC=27V, -40 ~105 25 -40 ~105 f=1kHz, RS=100 ,VCC=27V Minimum Cathode Current for Regulator Dynamic Impedance GSC103 IK=1~100mA, f<1kHz - - nA V dB nV/ Hz V Page: 3/4 ISSUED DATE :2005/10/26 REVISED DATE : Application Information—CC/CV Control for Switching Adapters GSC103 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 GSC103 Page: 4/4