G965 Global Mixed-mode Technology Inc. 1.5A Low Dropout Regulator with Enable Features General Description Adjustable Output from 1.2V to 4.8V Using External Resistors 1.5V, 1.8V and 2.5V Options by Setting ADJ Pin Below 0.2V Over Current and Over Temperature Protection 500mV Dropout @1.5A Enable Pin 10µA Quiescent Current in Shutdown SOP-8 Package The G965 is a high performance positive voltage regulator designed for use in applications requiring very low dropout voltage at up to 1.5 Amps. Since it has superior dropout characteristics compared to regular LDOs, it can be used to supply 2.5V on motherboards or 1.5V, 1.8V on peripheral cards from the 3.3V supply thus allowing the elimination of costly heatsinks. An enable pin further reduces power dissipation while shut down. The G965 provides excellent regulation over variations in line, load and temperature. Applications Notebook Computers Battery Powered Systems Motherboards Peripheral Cards Network Cards Set Top Boxes Medical Equipment The SOP-8 is available with 1.5V, 1.8V and 2.5V internally preset outputs that are also adjustable using external resistors. Ordering Information ORDER NUMBER ORDER NUMBER (Pb free) MARKING TEMP. RANGE PACKAGE G965-15ADJP1U G965-15ADJP1Uf G965-15 -40°C ~ +85°C SOP-8 G965-18ADJP1U G965-25ADJP1U G965-18ADJP1Uf G965-25ADJP1Uf G965-18 G965-25 -40°C ~ +85°C -40°C ~ +85°C SOP-8 SOP-8 Note: P1: SOP-8 U : Tape & Reel e.g. 18 denotes the 1.8V output voltage. Pin Configuration Typical Application Circuit VEN VEN VEN 8 1 GND VIN 2 7 GND VO 3 6 GND ADJ 4 5 GND G965 IENH R3 G965 VIN VIN VO VO R1 C1 22µF GND ADJ C2 47µF R2 SOP-8 1.2 (R1+R2) Volts R2 R2=12kΩ is recommended R3 should be connected for current IENH restriction as VEN > VIN+0.3V VO = TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 1.5 Apr 01, 2005 1 G965 Global Mixed-mode Technology Inc. Absolute Maximum Ratings (Note 1) Input Voltage……………………….……..……….……7V VEN Voltage…………..……………….…………VIN+0.3V Power Dissipation Internally Limited (Note 2) Maximum Junction Temperature…………………150°C Storage Temperature Range…..…-65°C ≤TJ ≤ +150°C Reflow Temperature (soldering, 10sec)…….….260°C Thermal Resistance Junction to Ambient, (θJA) SOP-8……………………………………..….…162°C/W Thermal Resistance Junction to Case, (θJC) SOP-8……………………………………………....31°C/W ESD Rating (Human Body Model)………..……..…2kV Operation Conditions (Note 1) Input Voltage……………………………….….2.2V ~5.5V Temperature Range………….………-40°C ≤TA ≤ +85°C Electrical Characteristics VEN=VIN, VIN =5V, IO = 0.5A, CIN = 4.7µF, COUT =10µF, TA = TJ = 25°C unless otherwise specified (Note 3) PARAMETER SYMBOL Supply Voltage Output Voltage Line Regulation Load Regulation VIN VO Quiescent Current IQ Ripple Rejection Dropout Voltage VD CONDITION MIN TYP MAX UNIT 2.2 -2 ----- --VO 0.2 0.8 5.5 2 2 2 V % % % VIN=3.3V,VEN=VIN --- 1.7 2.5 mA VIN=3.3V,VEN=0V fi=120Hz, 1VP-P, IO=100mA ----- 16 55 35 --- µA dB VIN=VO +0.7V, IO=10mA VO+0.7V < VIN < 5.5V, IO=10mA 10mA < IO < 1.5A IO=1.5A Short Circuit Current Over Temperature VEN Voltage High VEN Voltage Low VENH VENL Output Active Output Disabled VEN Bias Current Low ADJ Reference Voltage IENL VREF VEN=0.4V VIN=2.2V, VADJ=VOUT, IO=10mA ADJ Pin Threshold --- 0.5 0.65 V ----- 0.8 150 ----- A °C 1.6 --- ----- --0.4 V V --1.188 --1.2 20 1.212 µA V --- 0.2 --- V Note 1: Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Conditions are conditions under which the device functions but the specifications might not be guaranteed. For guaranteed specifications and test conditions see the Electrical Characteristics. Note2: The maximum power dissipation is a function of the maximum junction temperature, TJmax ; total thermal resistance, θJA, and ambient temperature TA. The maximum allowable power dissipation at any ambient temperature is (Tjmax-TA) / θJA. If this dissipation is exceeded, the die temperature will rise above 150°C and IC will go into thermal shutdown. Note3: Low duty pulse techniques are used during test to maintain junction temperature as close to ambient as possible. Note4: The type of output capacitor should be tantalum or aluminum. Definitions Load Regulation The change in output voltage for a change in load current at constant chip temperature. The measurement is made under conditions of low dissipation or by using pulse techniques such that average chip temperature is not significantly affected. Dropout Voltage The input/output Voltage differential at which the regulator output no longer maintains regulation against further reductions in input voltage. Measured when the output drops 2% below its nominal value, dropout voltage is affected by junction temperature, load current and minimum input supply requirements. Maximum Power Dissipation The maximum total device dissipation for which the regulator will operate within specifications. Line Regulation The change in output voltage for a change in input voltage. The measurement is made under conditions of low dissipation or by using pulse techniques such that average chip temperature is not significantly affected. Quiescent Bias Current Current which is used to operate the regulator chip and is not delivered to the load. TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 1.5 Apr 01, 2005 2 Global Mixed-mode Technology Inc. G965 Typical Performance Characteristics VEN=VIN, VIN =5V, IO = 0.5A, CIN = 4.7µF, COUT =10µF, TA = TJ = 25°C Line Transient(G965-15) Load Transient(G965-15) Line Transient Response(G965-18) Load Transient Response(G965-18) Line Transient Response(G965-25) Load Transient Response(G965-25) TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 1.5 Apr 01, 2005 3 Global Mixed-mode Technology Inc. G965 Typical Performance Characteristics (continued) Overcurrent Protection Characteristics(G965-15) Start-UP(G965-15) Start-up(G965-18) Overcurrent Protection Characteristics(G965-18) Overcurrent Protection Characteristics(G965-25) Start-up(G965-25) TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 1.5 Apr 01, 2005 4 G965 Global Mixed-mode Technology Inc. Typical Performance Characteristics (continued) Dropout Voltage vs.Temperature(G965-15) 700 1.65 600 Dropout Voltage (mV) Quiescent Current (mA) Quiescent Current vs. Temperature(G965-15) 1.7 1.6 VIN=5V 1.55 1.5 1.45 VIN=3V 1.4 500 IL=1A 400 300 200 100 1.35 IL=300mA 0 1.3 -25 -15 -5 5 -25 -15 -5 15 25 35 45 55 65 75 85 5 15 25 35 45 55 65 75 85 Temperature (°C) Temperature (°C) Quiescent Current vs. Temperature(G965-18) Dropout Voltage vs. IL(G965-18) 2.00 700 600 1.90 Dropout Voltage (mV) Quiescent Current (mA) 1.95 VIN=5V 1.85 1.80 1.75 1.70 VIN=3V 1.65 500 T=85°C 400 T=25°C 300 200 T=-25°C 1.60 100 1.55 1.50 0 -25 -15 -5 5 15 25 35 45 55 65 75 85 Temperature (°C) 0 700 3.75 600 Dropout Voltage (mV) Quiescent Current (mA) 500 750 1000 IL (mA) 1250 1500 Dropout Voltage vs. IL(G965-25) Quiescent Current vs. Temperature(G965-25) 4.00 3.50 VIN=5V 3.25 3.00 250 VIN=4V 2.75 500 T=85°C 400 T=25°C 300 200 100 T=-25°C 0 2.50 -25 -15 -5 5 0 15 25 35 45 55 65 75 85 Temperature (°C) 0.25 0.5 0.75 IL (A) 1 1.25 1.5 TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 1.5 Apr 01, 2005 5 G965 Global Mixed-mode Technology Inc. Typical Performance Characteristics (continued) Output Voltage vs. VIN(G965-15) Output Voltage vs. Temperature(G965-15) 1.54 1.54 IL=10mA IL=10mA 1.53 1.52 Output Voltage (V) Output Voltage (V) 1.53 VIN=5V 1.51 VIN=3V 1.5 1.52 T=25°C 1.51 T=-25°C 1.5 1.49 1.49 1.48 1.48 -25 -15 -5 5 2.5 15 25 35 45 55 65 75 85 Temperature (°C) 1.824 3.5 4 4.5 VIN (V) 5 5.5 1.825 IL=10mA IL=10mA 1.82 1.814 VIN=5V Output Voltage (V) Output Voltage (V) 3 Output Voltage vs. VIN(G965-18) Output Voltage vs. Temperature(G965-18) 1.819 T=85°C 1.809 1.804 VIN=3V 1.799 1.794 T=85°C 1.815 1.81 T=25°C 1.805 1.789 T=-25°C 1.784 1.8 -25 -15 -5 5 15 25 35 45 55 65 75 85 Temperature (°C) 2.5 3.5 4.5 VIN (V) 5.5 6.5 Output Voltage vs. VIN(G965-25) Output Voltage vs. Temperature(G965-25) 2.545 2.545 2.540 IL=10mA IL=10mA 2.535 2.525 Output Voltage (V) Output Voltage (V) 2.535 VIN=5V 2.515 2.505 VIN=4V 2.495 2.530 T=85°C 2.525 T=25°C 2.520 2.515 T=-25°C 2.510 2.485 2.505 2.475 2.500 -25 -15 -5 5 15 25 35 45 55 65 75 85 Temperature (°C) 3 4 5 VIN (V) 6 7 TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 1.5 Apr 01, 2005 6 G965 Global Mixed-mode Technology Inc. Typical Performance Characteristics (continued) Ripple Rejection Short Circuit Current 60 IL=10mA Ripple Rejection (dB) 50 IL=1.5A 40 IL=500mA 30 V IN=4V COUT =10µF V ripple=224mV 20 10 0 10 100 1000 10000 100000 1000000 Frequency (Hz) G965 Max. Power Dissipation vs. TAMB (still air) G965 Max. Power Dissipation vs. PCB Top Copper Area 2.5 Unit:in2 2.5 Max. Dissipation Power (W) Max. Dissipation Power (W) A=0.1 2 1.5 1 0.5 2 A=0.2 A=0.3 A=0.4 A=0.5 1.5 A=1.0 A=1.5 A=2.0 1 A=2.5 A=3.0 A=3.5 0.5 A=4.0 A=4.5 0 A=5.0 0 0 1 2 3 4 5 25 PCB Top Copper Area (in2) 35 45 55 65 75 85 TAMB (°C) Recommended Minimum Footprint SOP-8 TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 1.5 Apr 01, 2005 7 G965 Global Mixed-mode Technology Inc. Package Information C E H L D θ 7 ° (4X) A2 A A1 y e B SOP-8 Package Note: 1. Package body sizes exclude mold flash and gate burrs 2. Dimension L is measured in gage plane 3. Tolerance 0.10mm unless otherwise specified 4. Controlling dimension is millimeter converted inch dimensions are not necessarily exact. MIN DIMENSION IN MM NOM MAX MIN DIMENSION IN INCH NOM MAX A A1 A2 1.45 0.10 1.35 1.60 ----1.45 1.75 0.25 1.55 0.057 0.004 0.053 0.063 ----0.057 0.069 0.010 0.061 B C 0.306 0.153 --------- 0.506 0.253 0.012 0.006 --------- 0.020 0.010 D E e H L θ 4.81 3.84 ----5.84 0.45 --------1.27 --------- 5.01 4.04 ----6.24 1.00 0.189 0.151 ----0.230 0.018 --------0.050 --------- 0.197 0.159 ----0.246 0.039 0º ----- 8º 0º ----- 8º SYMBOL Taping Specification PACKAGE Q’TY/REEL SOP-8 2,500 ea Feed Direction Typical SOP Package Orientation GMT Inc. does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and GMT Inc. reserves the right at any time without notice to change said circuitry and specifications. TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 1.5 Apr 01, 2005 8