GMT G962 2A Low Dropout Regulator with Enable
Contents
1. 1 764 25 15 5 5 15 25 35 45 55 65 75 85 Temperature C Ver 0 8 Preliminary Apr 01 2005 Output Voltage V GUT siobai mixed mode Technoiogy me G962 Max Power Dissipation vs Taye Still air Different PCB Top Copper Area 4 Unit in 3 5 4 3 0 3 25 lt Do 2 D 2 a x 0 5 0 25 35 45 55 65 15 85 Tams C Dropout Voltage vs Temperature Dropout Voltage mV Output Voltage vs Vn 1 864 1 844 1 824 1 804 1 784 1 764 25 3 35 4 45 5 55 6 65 7 Vin V TEL 886 3 5788833 http www gmt com tw WI ciotatwixedmode Tecnnoiogy me G962 Recommend Minimum Footprint TO 252 5 fm 2 mm ka mn si f7 8 mm j 3 2 mm pi is e E 1 27 mm Ver 0 8 Preliminary TEL 886 3 5788833 Apr 01 2005 http www gmt com tw GUT iobal mixed mode Technoiogy me G962 Package Information Tou ia TO 252 5 TJ Package SYMB L INCH MIN MAKIN b oa 08 po oo n D 536 of a ou n 1 27BSC 0 050BSC Taping Specification PACKAGE Q TY REEL Cal OO TO225 250e 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 specifi2. 5 16 G 962 21H EMR ONR x Global Mixed mode Technology Inc G962 2A Low Dropout Regulator with Enable Features Adjustable Output from 1 2V to 4 8V Using Ex ternal Resistors m 1 5V 1 8V and 2 5V options by Setting ADJ Pin Below 0 2V Over current and over temperature protection 500mvV dropout 2A Enable pin 10pA quiescent current in shutdown Output recovery mode in OTP Connect ADJ to GND for fixed output mode TO 252 5 Package Applications Battery powered systems Motherboards Peripheral cards Set Top Boxes Notebook Computers Ordering Information ORDER NUMBER Ma LO MARKING OU TEMP RANGE PACKAGE G962 15ADJTJU G962 15ADJTJUf G962 15 40 C 85 C TO 252 5 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 TO 252 5 is available with 1 5V 1 8V and 2 5V internally preset outputs that are also adjustable using external resistors G962 18ADJTJU G962 18ADJTJUf G962 18 40 C 85 C TO 252 5 G962 25ADJTJU G9
3. 1 8V Line Transient Load Transient Tek Run M Trig Cin 4 7UF Cour 10uF T 10us TR 10us k 10mA A eee eee eee eee ere 4 ti J son CH1 VIN DRASET 411V CH1 L cae Chi 1 00V MB 20 0mv vw M40 0UMs A Chi S 4 22V MO 1ooAgwCh2 loomv CAM 200us A Chi J ROOMA Short Circuit Current Start UP Tek Stop 7 Tek Run CHw 4 TuF Cout iur a es Le CH1 l CHi k MIN 500mAGN M40 0ms A Chi J 440mA eR Tor aA DMch2 SOU anims Ach 7 240 W WE ino0ov w Overcurrent Protection Characteristics Ripple Rejection Tek Run Trig Ripple Rejection dB Vin 5V Cour10pF Vripple 224mV MOnwogs abeno nding chi S00mA AEE Sodom OM4 d0ms A Ch2 JO LAIN 10 100 1000 10000 100000 1000000 Frequency Hz Ver 0 8 Preliminary TEL 886 3 5788833 Apr 01 2005 http www gmt com tw Typical Characteristics continued Max Power Dissipation vs PCB Top Copper Area Tama 25 C Still Air Max Dissipation Power W 0 5 1 0 15 20 25 30 35 40 45 5 0 PCB Top Copper Area in Quiescent Current vs Temperature 2 00 1 95 1 90 1 85 1 80 1 75 1 70 1 65 1 60 1 55 1 50 Quiescent Current mA 25 15 5 5 15 25 35 45 55 65 75 85 Temperature C Output Voltage vs Temperature 1 864 1 844 1 824 1 804 Output Voltage V 1 784
4. 10mA 2 yo 2 Line Reguaton Wat 07 sa BV ma forf 2 a Te Regulation ponn 10mA lt lo lt 2A Quiescent Current Ripple Rejection o fr Dropout Voltage Eee lo 2A Short Circuit Current id 120HZ 1Vp p lo 100MA TOMA SIQSZ2A On MA re TE Nen ViN 3 3V VEN OV po 16 35 pa 5 aB 07 085 v Pp 08 Aa Se a oeg t e Ven Voltage High Vem OutputActive Vax Votlage Low vas Output Disabied o a vo MWA TI Ven Bias Current Low LO let Ven 0 4V ADJ Reference Voltage Veer Vw 2 2V VanJ Vour lo 10mA ADJ Pin Threshold BE 1 176 1 224 V l Vv Note 1 Absolute Maximum Ratings are limits beyond which damage to the device may occur Operating Con ditions 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 Oja and ambient temperature Ta The maximum allowable power dissipation at any ambient temperature is Tjmax Ta Qa 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 de
5. 62 25ADJTJUf G962 25 40 C 85 C TO 252 5 Note TJ TO 252 5 U Tape amp Reel e g 18 denotes the 1 8V output voltage Pin Configuration EN VIN GND VO ADJ TO 252 5 Ver 0 8 Preliminary Apr 01 2005 Typical Application Circuit M _1 2 RIR2 Volts R2 R2 12kQ is recommended R3 should be connected for current leny restriction as Ve gt Viy 0 3V TEL 886 3 5788833 http www gmt com tw Absolute Maximum Ratings Note 1 Input VOltage 0 cece ccc e cece eeeeeeeeeeeeeeeeeeeeaee eas TV Ven VONAGE cxccnucadossctanensaxeenaraesdacsenes needs Vint0 3V Power Dissipation Internally Limited Note 2 Maximum Junction Temperature 150 C Storage Temperature Range 65 C lt T lt 150 C Reflow Temperature Soldering 10 sec 260 C Thermal Resistance Junction to Ambient 8 TOR D e E ee ee ee ES 95 C W Thermal Resistance Junction to Case 0jc TO a N E 8 C W ESD Rating Human Body Model 55 2kV Electrical Characteristics Cwit Global Mixed mode Technology Inc G962 Operation Conditions Note 1 Input Voltage c cece cece cece sees teense eeaees 2 2V V Temperature Range 40 C lt T lt 85 C VEN Vin Vin 5V lo 0 5A Cn 4 7UF Cour 10pF Ta T 25 C unless otherwise specified Note 3 PARAMETER SYMBOL CONDITION MIN TYP MAX UNIT_ Output Voltage Vo VWEVO OTV los
6. cations Ver 0 8 Preliminary TEL 886 3 5788833 Apr 01 2005 http www gmt com tw
7. sign Definitions Dropout Voltage The input output voltage differential at which the regula tor 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 mini mum input supply requirements Line Regulation The change in output voltage for a change in input volt age The measurement is made under conditions of low dissipation or by using pulse techniques such that aver age chip temperature is not significantly affected Load Regulation The change in output voltage for a change in load Ver 0 8 Preliminary Apr 01 2005 current at constant chip temperature The measure ment is made under conditions of low dissipation or by using pulse techniques such that average chip tem perature 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 XSR MLCC capacitor lar ger than 10uF or POSCAP capacitor larger than 47uF TEL 886 3 5788833 http www gmt com tw KWIT Global mixed mode Technology inc Ss GO62 Typical Characteristics Ven Vins 5V lo 0 5A Cin 4 7 F Court 10UF TA T 25 C Vour
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GMT G962 2A Low Dropout Regulator with Enable