G941T74U

Global Mixed-mode Technology Inc. G940/G941 3.7V 400mA Low Dropout Regulator Features Dropout voltage typically 0.8V @ IO = 400mA Output current in excess of 400mA Output voltage accuracy +3%/-2% Quiescent current, typically 600µA Internal short circuit current limit Internal over temperature protection General Description The G940/G941 positive 3.7V voltage regulator features the ability to source 400mA of output current with a dropout voltage of typically 0.8V over the entire operating temperature range. A low quiescent current is provided over the entire output current range. The typical quiescent current is 0.6mA. Furthermore, the quiescent current is smaller when the regulator is in the dropout mode (VIN < 3.7V). Familiar regulator features such as over temperature and over current protection circuits are provided to prevent it from being damaged by abnormal operating conditions. Ordering Information ORDER NUMBER G940T21U G941T24U G940T73U PACKAGE TYPE SOT 89 SOT 89 SOT 23 1 VOUT GND GND PIN OPTION 2 GND VIN VOUT 3 VIN VOUT VIN *For other package types, pin options and package, please contact us at sales @gmt.com.tw Order Number Identification GXXX XX X X Packing Type Pin Option Package Type Part Number PACKAGE TYPE T2 : SOT 89 T6 : SOT 223 T7 : SOT 23 T8 : µTO92 1 1 : VOUT 2 : VOUT 3 : GND 4 : GND 5 : VIN 6 : VIN PIN OPTION 2 GND VIN VOUT VIN GND VOUT 3 VIN GND VIN VOUT VOUT GND PACKING U & D : Tape & Reel D Direction T : Tube B : Bag Typical Application [Note 4] : Type of COUT Package Type 3 IO VIN G940 C1 0.47µF IQ VOUT COUT 10µF Top View Top Top View Top View Top View Top View 1 2 1 2 3 1 2 3 SOT 89、223 µTO 92 SOT 23 Ver: 5.5 May 13, 2002 TEL: 886-3-5788833 http://www.gmt.com.tw 1 Global Mixed-mode Technology Inc. (Note 1) Absolute Maximum Ratings Input Voltage……………………………..……..…..…10V Power Dissipation Internally Limited ..(Note 2) Maximum Junction Temperature………….….…...150°C Storage Temperature Range…..…..…..-65°C ≤ TJ ≤+150°C Lead Temperature, Time for Wave Soldering SOT 89, SOT23 Package….….…..……..…....260°C, 4s Continuous Power Dissipation (TA = + 25°C) SOT 23(1)…….…………………….….……….……...0.3W SOT 89(1)……………………….………..………..…0.42W Note (1): See Recommended Minimum Footprint. (Note 1) Operating Conditions Input Voltage………………………….…………….4V~7V Temperature Range………………….…0°C ≤ TJ ≤125°C G940/G941 Electrical Characteristics VIN =5V, IO = 400mA, CIN = 1 µF, COUT =10 µF, All specifications apply for TA = TJ = 25°C. [Note 3] PARAMETER Output Voltage Accuracy Line Regulation Load Regulation Output Impedance Quiescent Current Ripple Rejection Dropout Voltage Short Circuit Current Over Temperature CONDITIONS IO = 10mA VIN = 4V to 7V, IO = 50mA IO = 10mA to 400mA 100mA DC and 100mA AC, fo = 120Hz VIN=5V fi = 120 Hz, 1VP-P, Io = 100mA IO = 400mA IO = 100mA MIN -2 - TYP 0.08 100 0.6 42 0.8 130 0.76 125 MAX +3 0.9 2.2 0.9 150 - UNITS % %/V % mΩ mA dB V mV A °C 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 130°C and IC will go into thermal shutdown. For the G940/G941 in SOT 23 package, θJA is 350°C/W and in the SOT 89 package is 250°C/W (See Recommend Minimum Footprint). The safe operation in SOT 23 & SOT 89 package, it can see “Typical Performance Characteristics” (Safe Operating Area). 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 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 100mV 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. Ver: 5.5 May 13, 2002 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. 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. TEL: 886-3-5788833 http://www.gmt.com.tw 2 Global Mixed-mode Technology Inc. Typical Performance Characteristics (VIN=5V, CIN=1µF, COUT=10µF, TA=25°C, unless otherwise noted.) G940/G941 Load Transient Line Transient Ch1: Vout (offset=3.70V) Ch2: Vin (offset=5.0V) Iout=100mA Ch1: Iout (400mA/div) Ch2: Vout (offset=3.70V) Output Voltage Accuracy vs. Load Current 2.000% Dropout Voltage vs. Load Current 900 800 Output Voltage Accuracy Dropout Voltage (mV) 1.500% 700 600 500 400 300 200 100 1.000% 0.500% 0.000% -0.500% -1.000% 0 50 100 150 200 250 300 350 400 450 500 550 600 0 0 50 100 150 200 250 300 350 400 450 Load Current (mA) Load Current (mA) Ground Current vs. Load Current 2.0 1.8 1.6 Ground Current (mA) 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 0 50 100 Load Current (mA) 150 200 250 300 350 400 Ver: 5.5 May 13, 2002 TEL: 886-3-5788833 http://www.gmt.com.tw 3 Global Mixed-mode Technology Inc. G940/G941 Maximum Power Dissipation of SOT 23 Safe Operating Area [Power Dissipation Limit] 500 450 400 350 300 250 200 150 100 50 0 0.0 0.4 0.8 1.2 1.6 2.0 2.4 2.8 1oz Copper on SOT 23 Package Mounted on recommended mimimum footprint (R θ JA=350°C/W) TA=25℃ TA=55℃ TA=85℃ 0.5 Maximum Recommended Output Current TA=25°C,Still Air 0.4 Power Dissipation (W) Output Current (mA) 0.3 0.2 0.1 Still Air 1oz Copper on SOT 23 Package Mounted on recommend mimimum footprint (R θ JA=350°C/W) 0.0 25 35 45 55 65 75 85 95 105 115 125 Input-Output Voltage Differential V IN-V OUT (V) Note: V IN(max)