G962-25T45U

Global Mixed-mode Technology Inc. G962 2A Low Dropout Regulator with Enable Features 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 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. 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 G962-25T45U G962-33T45U G962-50T45U G962-15ADJTJU G962-18ADJTJU G962-25ADJTJU ORDER NUMBER (Pb free) G962-25T45Uf G962-33T45Uf G962-50T45Uf G962-15ADJTJUf G962-18ADJTJUf G962-25ADJTJUf MARKING G962-25 G962-33 G962-50 G962-15 G962-18 G962-25 TEMP. RANGE -40°C ~ +85°C -40°C ~ +85°C -40°C ~ +85°C -40°C ~ +85°C -40°C ~ +85°C -40°C ~ +85°C PACKAGE TO-252 TO-252 TO-252 TO-252-5 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 G962-XXT45 Typical Application Circuit R3 VEN VEN VIN IENH G962 VEN VIN VO GND Top View 1 2 3 VO R1 C1 4.7µF C2 10µF R2 ADJ VIN GND VO TO-252 Top View 1 2 3 4 5 VO = VEN VIN GND VO ADJ Volts R2 R2=12kΩ is recommended R3 should be connected for current IENH restriction as VEN > VIN+0.3V 1.2 (R1+R2) TO-252-5 Ver: 1.0 Jan 08, 2007 TEL: 886-3-5788833 http://www.gmt.com.tw 1 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 G962 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 Quiescent Current Ripple Rejection VO 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 IQ Dropout Voltage VD V Short Circuit Current Over Temperature VEN Voltage High VEN Voltage Low VEN Bias Current Low ADJ Reference Voltage ADJ Pin Threshold VENH VENL IENL VREF 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 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. 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. Load Regulation The change in output voltage for a change in load Ver: 1.0 Jan 08, 2007 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. Maximum Power Dissipation The maximum total device dissipation for which the regulator will operate within specifications. 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. TEL: 886-3-5788833 http://www.gmt.com.tw 2 Global Mixed-mode Technology Inc. Typical Characteristics VEN=VIN, =5V, IO = 0.5A, CIN = 4.7µF, COUT =10µF, TA = TJ = 25°C G962-18 Line Transient Response G962 G962-25 Line Transient Response G962-33 Line Transient Response G962-50 Line Transient Response G962-18 Load Transient Response G962-25 Load Transient Response Ver: 1.0 Jan 08, 2007 TEL: 886-3-5788833 http://www.gmt.com.tw 3 Global Mixed-mode Technology Inc. Typical Characteristics (continued) G962-33 Load Transient Response G962 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 Ver: 1.0 Jan 08, 2007 TEL: 886-3-5788833 http://www.gmt.com.tw 4 Global Mixed-mode Technology Inc. Typical Characteristics (continued) G962-18 Overcurrent Protection Characteristics G962 G962-25 Overcurrent Protection Characteristics G962-50 Overcurrent Protection Characteristics G962-18 Start-UP G962-25 Start-UP G962-50 Start-UP Ver: 1.0 Jan 08, 2007 TEL: 886-3-5788833 http://www.gmt.com.tw 5 Global Mixed-mode Technology Inc. Typical Characteristics (continued) G962-18 Ripple Rejection 70 60 Ripple Rejection (dB) G962 G962-25 Ripple Rejection IL=1A 70 IL=1A Ripple Rejection (dB) 60 50 40 30 20 10 0 VIN=5V COUT=10µF Vripple=224mV 50 40 30 20 10 0 10 100 1000 10000 100000 1000000 IL=2A IL=2A VIN=5V COUT=10µF Vripple=224mV 10 100 1000 10000 100000 1000000 Frequency (Hz) Frequency (Hz) G962-33 Ripple Rejection 60 50 Ripple Rejection (dB) G962-50 Ripple Rejection 60 50 Ripple Rejection (dB) IL=100mA IL=2A 40 30 20 10 0 -10 -20 (VIN-VOUT)>VDROPOUT VRIPPLE