G905 Global Mixed-mode Technology Inc. 2.5V 600mA Low Dropout Regulator Features 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. 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 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 ORDER NUMBER (Pb free) TEMP. RANGE PACKAGE G905T24U G905T24Uf -40°C to 85°C SOT-89 1 PIN OPTION 2 3 GND VIN VOUT Order Number Identification GXXX XX X X Packing Type Pin Option Package Type Part Number PACKAGE TYPE T2 : SO-T89 PIN OPTION 1 4 : GND Package Type 2 VIN PACKING U & D : Tape & Reel Direction 3 VOUT Typical Application [Note 4] : Type of COUT IO VIN Top View 1 2 G905 C1 1µF IQ VOUT COUT 10µF 3 SOT-89 TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 1.4 Apr 11, 2005 1 G905 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 Operating Conditions (Note 1) Input Voltage………………………….……..…3.3V ~ 6V Temperature Range………………..…-40°C ≤ TA ≤85°C Note (1): See Recommended Minimum Footprint 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 CONDITION 10mA < IO < 600mA 4V < VIN < 6V, IO = 10mA 10mA < IO < 600mA MIN TYP MAX UNIT 2.45 ----- 2.5 15 10 2.55 ----- V mV mV Quiescent Current VIN = 5V --- 0.3 --- mA Ripple Rejection fi = 120Hz, Vripple=2VP-P, Io = 100mA IO = 600mA IO = 300mA ------- 47 800 400 ------- dB --- 600 --- mA Short Circuit Current Current Limit ----- 0.65 0.8 ----- A A Over Temperature --- 145 --- °C Dropout Voltage Output Current Continuous Test, VIN = 3.3V TA = 25°C, TJ < 125°C, VOUT within ±2% (Note 3) Minimum footprint mV 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 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. 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. 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. TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 1.4 Apr 11, 2005 2 G905 Global Mixed-mode Technology Inc. Typical Performance Characteristics (VIN= 5V, CIN=1µF, COUT=10µF, TA=25°C, unless otherwise noted.) Line Transient Load Transient Short Circuit Current Start-UP Overcurrent Protection Characteristics Ripple Rejection 70 Ripple Rejection (dB) 60 IL=100mA 50 40 IL=600mA 30 20 V IN=5.0V COUT =10µF 10 0 10 100 1000 10000 Frequency (Hz) 100000 1000000 TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 1.4 Apr 11, 2005 3 G905 Global Mixed-mode Technology Inc. Typical Performance Characteristics (continued) Dropout Voltage vs.IL 1000 800 900 700 800 Dropout Voltage (mV) Quiescent Current (µA) Quiescent Current vs. Temperature 900 600 500 V IN=5V 400 300 200 700 600 500 300 5 TA=-25°C 100 0 100 0 -25 -15 -5 TA=25°C 200 V IN=4V 100 TA=85°C 400 15 25 35 45 55 65 75 85 200 300 Temperature (°C) Output Voltage vs. Temperature 600 2.6 IL=10mA IL=10mA 2.575 Output Voltage (V) 2.58 Output Voltage (V) 500 Output Voltage vs. VIN 2.60 2.55 2.53 2.50 V IN=4V 2.48 V IN=5V V IN=6V 2.55 2.525 2.5 2.475 2.45 TA=-25°C TA=85°C TA=25°C 2.45 -25 -15 -5 5 15 25 35 45 55 65 75 85 Temperature (°C) 3 4.5 V IN (V) SOT-89 Max. Power Dissipation vs. PCB Top Copper Area TAMB = 25°C ; Still Air SOT-89 Max. Power Dissipation vs. TAMB (still air) ( Different PCB Top Copper Area ) 2.5 3.5 4 5 5.5 6 2.5 Unit:in2 A=0.5 Max. Dissipation Power (W) Max. Dissipation Power (W) 400 IL (mA) 2 1.5 1 0.5 2 A=1.0 A=1.5 1.5 A=2.0 A=2.5 A=3.0 1 A=3.5 A=4.0 0.5 A=4.5 A=5.0 0 0 0.5 1.5 2.5 3.5 PCB Top Copper Area (in2) 4.5 25 45 65 85 TAMB (°C) TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 1.4 Apr 11, 2005 4 Global Mixed-mode Technology Inc. G905 Recommended Minimum Footprint SOT-89 TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 1.4 Apr 11, 2005 5 G905 Global Mixed-mode Technology Inc. Package Information D D1 POLISH E HE A1 e C MATTE FINISH A b b1 b POLISH SOT-89 (T2) Package DIMENSIONS IN MILLIMETER MIN NOM MAX MIN DIMENSIONS IN INCH NOM MAX A A1 b b1 1.40 0.80 0.36 0.41 1.50 1.04 0.42 0.47 1.60 ----0.48 0.53 0.055 0.031 0.014 0.016 0.059 0.041 0.016 0.018 0.063 ----0.019 0.020 C D 038 4.40 0.40 4.50 0.43 4.60 0.014 0.173 0.015 0.177 0.017 0.181 D1 HE 1.40 ----- 1.60 ----- 1.75 4.25 0.055 ----- 0.062 ----- 0.069 0.167 E e 2.40 2.90 2.50 3.00 2.60 3.10 0.094 0.114 0.098 0.118 0.102 0.122 SYMBOL Taping Specification PACKAGE Q’TY/REEL SOT-89 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. TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 1.4 Apr 11, 2005 6