G905

Global Mixed-mode Technology Inc. G905 2.5V 600mA Low Dropout Regulator Features Dropout voltage typically 0.8V @ IO = 600mA Output current in 600mA Output voltage accuracy +2% Quiescent current, typically 0.3mA Internal short circuit current limit Internal over temperature protection General Description The G905 positive 2.5V voltage regulator features the ability to source 600mA of output current with a dropout voltage of typically 0.8V. A low quiescent current is provided. The typical quiescent current is 0.3mA. Familiar regulator features such as over temperature and over current protection circuits are provided to prevent it from being damaged by abnormal operating conditions. Application CD-R/W DVD-ROM DVD player LAN Switch Broadband access Ordering Information ORDER NUMBER G905T24U ORDER NUMBER (Pb free) G905T24Uf TEMP. RANGE -40°C to 85°C PACKAGE SOT-89 1 GND PIN OPTION 2 VIN 3 VOUT Order Number Identification GXXX XX X X Packing Type Pin Option Package Type Part Number PACKAGE TYPE T2 : SO-T89 1 4 : GND PIN OPTION 2 VIN 3 VOUT PACKING U & D : Tape & Reel Direction Package Type Typical Application [Note 4] : Type of COUT IO VIN G905 C1 1µF IQ VOUT COUT 10µF Top Top View 1 2 3 SOT-89 Ver: 1.4 Apr 11, 2005 TEL: 886-3-5788833 http://www.gmt.com.tw 1 Global Mixed-mode Technology Inc. Absolute Maximum Ratings (Note 1) Input Voltage…………………………………………...7V Power Dissipation Internally Limited……….…...(Note2) 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) SOT-89…..……………………….….……….…173°C/W Thermal Resistance Junction to Case, (θJc) SOT-89…..……………………….….….……..…25°C/W Note (1): See Recommended Minimum Footprint G905 Operating Conditions (Note 1) Input Voltage………………………….……..…3.3V ~ 6V Temperature Range………………..…-40°C ≤ TA ≤85°C Electrical Characteristics VIN =5V, IO = 600mA, CIN=1µF, COUT =10µF. All specifications apply for TA = TJ = 25°C. [Note 3] PARAMETER Output Voltage Line Regulation Load Regulation Quiescent Current Ripple Rejection Dropout Voltage Output Current Short Circuit Current Current Limit Over Temperature CONDITION 10mA < IO < 600mA 4V < VIN < 6V, IO = 10mA 10mA < IO < 600mA VIN = 5V fi = 120Hz, Vripple=2VP-P, Io = 100mA IO = 600mA IO = 300mA Continuous Test, VIN = 3.3V TA = 25°C, TJ < 125°C, VOUT within ±2% (Note 3) Minimum footprint MIN 2.45 --------------------- TYP 2.5 15 10 0.3 47 800 400 600 0.65 0.8 145 MAX 2.55 --------------------- UNIT V mV mV mA dB mV mA A 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 150°C and IC will go into thermal shutdown. For the G905 in SOT-89 (T2) package, θJA is 173°C/W (See recommend minimum footprint). The safe operation in 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: 1.4 Apr 11, 2005 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.) G905 Load Transient Line Transient Short Circuit Current Start-UP Overcurrent Protection Characteristics 70 60 Ripple Rejection (dB) 50 40 30 20 10 0 10 100 V IN=5.0V COUT =10µF Ripple Rejection IL=100mA IL=600mA 1000 10000 Frequency (Hz) 100000 1000000 Ver: 1.4 Apr 11, 2005 TEL: 886-3-5788833 http://www.gmt.com.tw 3 Global Mixed-mode Technology Inc. Typical Performance Characteristics (continued) G905 Dropout Voltage vs.IL Quiescent Current vs. Temperature 900 800 Quiescent Current (µA) Dropout Voltage (mV) 700 600 500 400 300 200 100 0 -25 -15 -5 5 15 25 35 45 55 65 75 85 Temperature (°C) V IN=4V V IN=5V 1000 900 800 700 600 500 400 300 200 100 0 100 TA=85°C TA=25°C TA=-25°C 200 300 400 IL (mA) 500 600 Output Voltage vs. Temperature 2.60 2.58 Output Voltage (V) 2.55 2.53 2.50 2.48 2.45 -25 -15 -5 5 15 25 35 45 55 65 75 85 Temperature (°C) V IN=4V V IN=5V V IN=6V IL=10mA Output Voltage (V) 2.6 Output Voltage vs. VIN IL=10mA 2.575 2.55 2.525 2.5 2.475 2.45 3 3.5 4 4.5 V IN (V) 5 5.5 6 TA=-25°C TA=25°C TA=85°C SOT-89 Max. Power Dissipation vs. PCB Top Copper Area TAMB = 25°C ; Still Air 2.5 Max. Dissipation Power (W) Max. Dissipation Power (W) 2.5 SOT-89 Max. Power Dissipation vs. TAMB (still air) ( Different PCB Top Copper Area ) Unit:in2 A=0.5 2 2 A=1.0 A=1.5 1.5 1.5 A=2.0 A=2.5 1 1 A=3.0 A=3.5 0.5 0.5 A=4.0 A=4.5 A=5.0 0 0.5 1.5 2.5 3.5 PCB Top Copper Area (in2) 4.5 0 25 45 TAMB (°C) 65 85 Ver: 1.4 Apr 11, 2005 TEL: 886-3-5788833 http://www.gmt.com.tw 4 Global Mixed-mode Technology Inc. Recommended Minimum Footprint SOT-89 G905 Ver: 1.4 Apr 11, 2005 TEL: 886-3-5788833 http://www.gmt.com.tw 5 Global Mixed-mode Technology Inc. Package Information G905 D D1 POLISH E HE A1 e C MATTE FINISH A b b1 b POLISH SOT-89 (T2) Package SYMBOL A A1 b b1 C D D1 HE E e DIMENSIONS IN MILLIMETER MIN NOM MAX 1.40 0.80 0.36 0.41 038 4.40 1.40 ----2.40 2.90 1.50 1.04 0.42 0.47 0.40 4.50 1.60 ----2.50 3.00 1.60 ----0.48 0.53 0.43 4.60 1.75 4.25 2.60 3.10 MIN 0.055 0.031 0.014 0.016 0.014 0.173 0.055 ----0.094 0.114 DIMENSIONS IN INCH NOM 0.059 0.041 0.016 0.018 0.015 0.177 0.062 ----0.098 0.118 MAX 0.063 ----0.019 0.020 0.017 0.181 0.069 0.167 0.102 0.122 Taping Specification PACKAGE SOT-89 Q’TY/REEL 1,000 ea Feed Direction SOT-89 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. Ver: 1.4 Apr 11, 2005 TEL: 886-3-5788833 http://www.gmt.com.tw 6