G962 Global Mixed-mode Technology Inc. 2A Low Dropout Regulator with Enable Features General Description The G962 is a high performance positive voltage regulator designed for use in applications requiring very low dropout voltage at up to 2 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 G962 provides excellent regulation over variations in line, load and temperature. 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 Fixed 2.5V, 3.3V and 5V Output for TO-252 Over current and over temperature protection 500mV dropout @2A Enable pin 10µA quiescent current in shutdown Output recovery mode in OTP Connect ADJ to GND for fixed output mode TO-252 and TO-252-5 Package The G962 is available with 1.5V, 1.8V, 2.5V, 3.3V and 5V internally preset outputs. Applications Battery powered systems Motherboards Peripheral cards Set Top Boxes Notebook Computers Ordering Information ORDER NUMBER ORDER NUMBER (Pb free) MARKING TEMP. RANGE PACKAGE G962-25T45U G962-25T45Uf G962-25 -40°C ~ +85°C TO-252 G962-33T45U G962-50T45U G962-33T45Uf G962-50T45Uf G962-33 G962-50 -40°C ~ +85°C -40°C ~ +85°C TO-252 TO-252 G962-15ADJTJU G962-15ADJTJUf G962-15 -40°C ~ +85°C TO-252-5 G962-18ADJTJU G962-25ADJTJU G962-18ADJTJUf G962-25ADJTJUf G962-18 G962-25 -40°C ~ +85°C -40°C ~ +85°C TO-252-5 TO-252-5 Note: T4: TO-252 TJ:TO-252-5 U : Tape & Reel e.g. 18 denotes the 1.8V output voltage. Pin Configuration Typical Application Circuit 2 3 VIN GND VO VIN VIN VO VO R1 C1 4.7µF 3 4 ADJ R2 Top View 2 GND C2 10µF TO-252 1 G962 VEN VEN Top View 1 IENH R3 G962-XXT45 1.2 (R1+R2) Volts R2 R2=12kΩ is recommended R3 should be connected for current IENH restriction as VEN > VIN+0.3V VO = 5 VEN VIN GND VO ADJ TO-252-5 TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 1.0 Jan 08, 2007 1 G962 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, 10 sec) . . . . . .260°C Thermal Resistance Junction to Ambient, (θJA) TO-252, TO-252-5 . . . . . . . . . . . . . . . . . . . . .95°C/W Thermal Resistance Junction to Case, (θJC) TO-252, TO-252-5. . . . . . . . . . . . . . . . . . . . . . 8°C/W ESD Rating (Human Body Model) . . . . . . . . . . . . .2kV Operation Conditions (Note 1) Input Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.2V ~7V 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 CONDITION MIN TYP MAX UNIT Output Voltage Line Regulation Load Regulation VO Quiescent Current IQ Ripple Rejection Dropout Voltage Short Circuit Current Over Temperature VEN Voltage High VEN Voltage Low VEN Bias Current Low ADJ Reference Voltage ADJ Pin Threshold VD VENH VENL IENL VREF VIN=VO +0.7V, IO=10mA VO+0.7V < VIN < 5.5V, IO=10mA 10mA < IO < 2A VO=3.3V,VEN=VIN VEN=0V fi=120Hz, 1VP-P, IO=100mA G962-15, IOUT = 2A G962-18, IOUT = 2A G962-25, IOUT = 2A G962-33, IOUT = 2A G962-50, IOUT = 2A, VIN=6V (Note 4) Output Active Output Disabled VEN=0.4V VIN=2.2V, VADJ=VOUT, IO=10mA -2 ------------------------1.6 ----1.176 --- VO 0.2 0.8 3 16 55 0.9 0.7 0.6 0.5 0.45 0.8 150 ------1.2 0.2 2 2 2 3.5 35 --1.1 0.9 0.7 0.6 0.55 ------0.4 20 1.224 --- % % % mA µA dB V A °C V V µA V 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 over temperature point is guarantee by design. Definitions 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. Output Capacitor for Stable Condition The G962 can be stable for X5R MLCC capacitor larger than 10µF or POSCAP capacitor larger than 47µF. Load Regulation The change in output voltage for a change in load TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 1.0 Jan 08, 2007 2 Global Mixed-mode Technology Inc. G962 Typical Characteristics VEN=VIN, =5V, IO = 0.5A, CIN = 4.7µF, COUT =10µF, TA = TJ = 25°C G962-25 Line Transient Response G962-18 Line Transient Response G962-33 Line Transient Response G962-50 Line Transient Response G962-18 Load Transient Response G962-25 Load Transient Response TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 1.0 Jan 08, 2007 3 Global Mixed-mode Technology Inc. G962 Typical Characteristics (continued) G962-33 Load Transient Response G962-50 Load Transient Response G962-18 Short Circuit Current G962-25 Short Circuit Current G962-33 Short Circuit Current G962-50 Short Circuit Current TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 1.0 Jan 08, 2007 4 G962 Global Mixed-mode Technology Inc. Typical Characteristics (continued) G962-18 Overcurrent Protection Characteristics G962-25 Overcurrent Protection Characteristics G962-50 Overcurrent Protection Characteristics G962-18 Start-UP G962-25 Start-UP G962-50 Start-UP TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 1.0 Jan 08, 2007 5 G962 Global Mixed-mode Technology Inc. Typical Characteristics (continued) G962-18 Ripple Rejection G962-25 Ripple Rejection 70 70 IL=1A 50 IL=2A 40 30 VIN=5V COUT=10µF Vripple=224mV 20 10 IL=1A 60 Ripple Rejection (dB) Ripple Rejection (dB) 60 50 IL=2A 40 30 VIN=5V COUT=10µF Vripple=224mV 20 10 0 0 10 100 1000 10000 100000 10 1000000 100 1000 Frequency (Hz) G962-33 Ripple Rejection 1000000 60 IL=100mA 40 IL=2A 50 Ripple Rejection (dB) 50 Ripple Rejection (dB) 100000 G962-50 Ripple Rejection 60 IL=2A 30 IL=1A 20 COUT=47µF 10 40 IL=10mA 30 IL=1A 20 10 (VIN-VOUT)>VDROPOUT VRIPPLE<0.5VP-P COUT=47µF 0 -10 -20 0 10 100 1000 10000 100000 1000000 10 100 1000 G962-18 Quiescent Current vs. Temperature 10000 Frequency (Hz) Frequency (Hz) 100000 G962-25 Quiescent Current vs. Temperature 4.00 2.00 1.95 3.75 Quiescent Current (mA) 1.90 Quiescent Current (mA) 10000 Frequency (Hz) VIN=5V 1.85 1.80 1.75 1.70 VIN=3V 1.65 1.60 3.50 VIN=5V 3.25 3.00 VIN=4V 2.75 1.55 1.50 2.50 -25 -15 -5 5 -25 -15 -5 15 25 35 45 55 65 75 85 Temperature (°C) 5 15 25 35 45 55 65 75 85 Temperature (°C) TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 1.0 Jan 08, 2007 6 G962 Global Mixed-mode Technology Inc. Typical Characteristics (continued) G962-33 Quiescent Current vs. Temperature G962-50 Quiescent Current vs. Temperature 5 8 4.5 7 Quiescent Current (mA) Quiescent current (mA) 4 VIN=6V 3.5 3 2.5 2 VIN=4V VIN=5V 1.5 1 6 VIN=7V 5 4 VIN=6V 3 0.5 0 2 -40 -20 0 20 40 60 80 -40 100 -20 0 Temperature (°C) 700 900 800 600 700 600 Dropout Voltage (mV) Dropout Voltage (mV) 80 G962-25 Dropout Voltage vs. Temperature G962-18 Dropout Voltage vs. Temperature T=85°C 500 400 T=25°C 300 200 T=85°C 500 400 T=25°C 300 T=-25°C 200 100 T=-25°C 100 0 0 0 0.5 1 IL (A) 1.5 0 2 G962-33 Dropout Voltage vs. Temperature 0.5 1 IL (mA) 1.5 2 G962-50 Dropout Voltage vs. Temperature 0.5 800 700 IL=2A Dropout Voutput (mV) 0.4 Dropout Voltage (V) 20 40 60 Temperature (°C ) 0.3 0.2 0.1 IL=2A 600 500 400 300 200 100 0 0 -40 -20 0 20 40 60 80 100 -40 Temperature (°C) -15 10 35 60 85 Temperature (°C ) TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 1.0 Jan 08, 2007 7 G962 Global Mixed-mode Technology Inc. Typical Characteristics (continued) G962-18 Output Voltage vs. Temperature G962-25 Output Voltage vs. Temperature 1.864 2.545 IL=10mA 2.535 1.844 1.824 Output Voltage (V) Output Voltage (V) IL=10mA VIN=5V 1.804 VIN=3V 1.784 2.525 VIN=5V 2.515 2.505 VIN=4V 2.495 2.485 2.475 1.764 -25 -15 -5 5 -25 -15 -5 15 25 35 45 55 65 75 85 Temperature (°C) G962-33 Output Voltage vs. Temperature 5.2 IL=1A 3.45 5.15 IL=1A 3.4 3.35 Output Voltage (V) Output Voltage (V) 15 25 35 45 55 65 75 85 Temperature (°C) G962-50 Output Voltage vs. Temperature 3.5 VIN=7V 3.3 3.25 VIN=5V 3.2 VIN=7V 5.1 5.05 VIN=6V 5 4.95 3.15 3.1 4.9 -40 -20 0 20 40 60 80 100 -40 -20 Temperature (°C) 0 20 40 60 80 100 Temperature (°C ) Max. Power Dissipation vs. TAMB (still air) ( Different PCB Top Copper Area ) Max. Power Dissipation vs. PCB Top Copper Area 4.0 4 Max. Dissipation Power (W) TAMB = 25°C ; Still Air 3.5 Max. Dissipation Power (W) 5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 PCB Top Copper Area (in2) Unit: in2 A=0.5 3.5 A=1.0 3 A=1.5 2.5 A=2.0 2 A=2.5 A=3.0 1.5 A=3.5 1 A=4.0 0.5 A=4.5 0 A=5.0 25 35 45 55 65 TAMB (°C) 75 85 TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 1.0 Jan 08, 2007 8 Global Mixed-mode Technology Inc. G962 Recommend Minimum Footprint TO-252-5 TO-252 TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 1.0 Jan 08, 2007 9 G962 Global Mixed-mode Technology Inc. Package Information D A D1 C1 B V E A1 L b1 L3 L1 L2 b e e1 C TO-252 (T4) Package SYMBOL MILLIMETERS INCHES MIN. MAX. MIN. MAX. A A1 2.190 0.000 2.400 0.127 0.086 0.000 0.094 0.005 B b 0.880 0.500 1.650 0.880 0.035 0.020 0.065 0.035 b1 C 0.700 0.430 0.900 0.580 0.028 0.017 0.035 0.023 C1 D 0.430 6.350 0.580 6.730 0.017 0.250 0.023 0.265 D1 E 5.200 5.400 5.460 6.220 0.205 0.213 0.215 0.245 e e1 4.500 4.700 0.177 0.185 9.400 2.550 1.400 0.350 10.42 2.900 1.780 1.020 0.370 0.100 0.055 0.014 0.410 0.114 0.070 0.040 L L1 L2 L3 V 2.300 TYP 0.091 TYP 4.320 REF 0.170 REF TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 1.0 Jan 08, 2007 10 G962 Global Mixed-mode Technology Inc. D A D1 c1 V E L1 A1 L3 L2 e c b e1 TO-252-5 (TJ) Package SYMBOL MILLIMETERS MIN. INCHES MAX. MIN. MAX. A 2.190 2.400 0.086 0.094 A1 b c 0.000 0.400 0.430 0.127 0.880 0.580 0.000 0.016 0.017 0.005 0.035 0.023 c1 D 0.430 6.350 0.580 6.730 0.017 0.250 0.023 0.265 D1 E 5.200 5.400 5.460 6.220 0.205 0.213 0.215 0.245 e e1 L1 L2 L3 V 1.270 TYP 2.540 TYP 9.400 1.400 2.550 0.050 TYP 1.000 TYP 9.900 1.780 2.900 0.370 0.055 0.100 3.800 REF 0.410 0.070 0.114 0.150 REF Taping Specification Feed Direction TO-252 Package Orientation PACKAGE Q’TY/REEL TO-252 2,500 ea TO-252-5 2,500 ea Feed Direction TO-252-5 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: 1.0 Jan 08, 2007 11