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| SG2012 GENERAL DESCRIPTION The SG2012 low-power, low-dropout, CMOS linear voltage regulators operate from a 2.5V to 5.5V input and deliver up to 400mA. They are perfect choice for low voltage, low power applications. An ultra low ground current (120A at 400mA output) makes them attractive for battery operated power systems. The SG2012 series also offer ultra low dropout voltage (280mV at 400mA output) to prolong battery life in portable electronics. The output voltage is preset to voltages in the range of 1.5V to 4.5V. Other features include foldback current limit and thermal shut-down protection. SG2012 comes in 3-pin SOT223 package. 400mA , Low Power, Low Dropout, Linear Regulators FEATURES - Ultra-Low Dropout Voltage: 280mV at 400mA output - Low 80A No-Load Supply Current - Low 120A Operating Supply Current - at 400mA Output Thermal-Overload Protection Output Current Limit Preset Output Voltages (1.8% Accuracy) Output Voltage: Available in Fixed Outputs of 1.5V, 1.8V, 2.5V, 2.8V, 3.0V, and 3.3V PIN CONFIGURATIONSTOP VIEW GND APPLICATIONS Cellular Telephones Digital Cameras MP3MP4 USB 2.0 Modems PC Cameras Hand-Held Instruments Electronic Dictionarys Portable/Battery-Powered Equipment 1 OUT 2 GND 3 IN SOT223-3 OUT TYPICAL OPERATION CIRCUIT INPUT IN CIN 1F GND OUT COUT 1F OUTPUT 1 GND 2 OUT 3 IN SOT223-3(R-Type) SG Microelectronics Co, Ltd Tel: 86/451/84348461 www.sg-micro.com REV. B ORDERING INFORMATION MODEL VOUT (V) 1.5V 1.8V 2.5V 2.8V 3.0V 3.3V PINPACKAGE SOT223-3 SOT223-3(R-Type) SOT223-3 SOT223-3(R-Type) SOT223-3 SOT223-3(R-Type) SOT223-3 SOT223-3(R-Type) SOT223-3 SOT223-3(R-Type) SOT223-3 SOT223-3(R-Type) SPECIFIED TEMPERATURE RANGE - 40C to +125C - 40C to +125C - 40C to +125C - 40C to +125C - 40C to +125C - 40C to +125C ORDERING NUMBER SG2012-1.5XKC3/TR SG2012-1.5XKC3R/TR SG2012-1.8XKC3/TR SG2012-1.8XKC3R/TR SG2012-2.5XKC3/TR SG2012-2.5XKC3R/TR SG2012-2.8XKC3/TR SG2012-2.8XKC3R/TR SG2012-3.0XKC3/TR SG2012-3.0XKC3R/TR SG2012-3.3XKC3/TR SG2012-3.3XKC3R/TR PACKAGE MARKING SG2012-1.5XKC3 SG2012-1.5XKC3R SG2012-1.8XKC3 SG2012-1.8XKC3R SG2012-2.5XKC3 SG2012-2.5XKC3R SG2012-2.8XKC3 SG2012-2.8XKC3R SG2012-3.0XKC3 SG2012-3.0XKC3R SG2012-3.3XKC3 SG2012-3.3XKC3R PACKAGE OPTION Tape and Reel, 2500 Tape and Reel, 2500 Tape and Reel, 2500 Tape and Reel, 2500 Tape and Reel, 2500 Tape and Reel, 2500 SG2012-1.5 SG2012-1.8 SG2012-2.5 SG2012-2.8 SG2012-3.0 SG2012-3.3 ABSOLUTE MAXIMUM RATINGS IN to GND.....................................................................- 0.3V to +6V Output Short-Circuit Duration............................................Infinite OUT to GND...................................................- 0.3V to (VIN + 0.3V) Operating Temperature Range................. ..........- 40C to +125C Junction Temperature...........................................................+150C Storage Temperature.............................................- 65C to +150C Power Dissipation, PD @ TA = 25 SOT223-3...................................................................................0.74W Package Thermal Resistance SOT223-3, JA.......................................................................135C/W Lead Temperature (soldering, 10s) ....................................+260C ESD Susceptibility HBM..........................................................................................7000V MM..............................................................................................400V Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. PIN DESCRIPTION NAME IN GND OUT FUNCTION Regulator Input. Supply voltage can range from 2.5V to 5.5V. Ground. Regulator Output. SG2012 ELECTRICAL CHARACTERISTICS (VIN = VOUT (NOMINAL) +1V, TA = - 40C to +125C, unless otherwise noted. Typical values are at TA = + 25C.) PARAMETER Input Voltage SYMBOL VIN IOUT = 0.1mA, TA = +25C IOUT = 0.1mA to 400mA, Output Voltage Accuracy TA = 0C to +70C IOUT = 0.1mA to 400mA, TA = - 40C to +125C Output Current Current Limit Ground Pin Current Dropout Voltage(Note1) Line Regulation Load Regulation Output Voltage Noise Power Supply Rejection Rate THERMAL PROTECTION Thermal Shutdown Temperature Thermal Shutdown Hysteresis TSHDN TSHDN 160 15 VLNR VLDR ILIM IQ No load IOUT = 400mA IOUT = 1mA IOUT = 400mA VIN = 2.5V or (VOUT + 0.1V) to 5.5V, IOUT = 1mA IOUT = 0.1mA to 400mA, COUT = 1F f = 10Hz to 100KHz, COUT = 10F ILOAD = 50mA, COUT = 1F f = 100Hz, f = 1KHz, 400 410 750 80 120 0.8 280 0.004 0.0005 120 74 54 440 0.15 0.002 130 CONDITIONS MIN 2.5 -1.8 TYP MAX 5.5 1.8 2.6 3.1 mA mA A mV %/V %/mA VRMS dB dB % UNITS V en PSRR Specifications subject to change without notice. Note 1: The dropout voltage is defined as VIN - VOUT, when VOUT is 100mV below the value of VOUT for VIN = VOUT + 1V. (Only applicable for VOUT = +2.5V to +4.5V) SG2012 TYPICAL OPERATING CHARACTERISTICS VIN = VOUT (NOMINAL) + 1V, CIN = 1F, COUT = 1F, TA = +25, unless otherwise noted. Ground Pin Current vs.Input Voltage 100 80 60 No Load 40 20 VOUT = 2.5V 0 0 1 2 3 4 Input Voltage(V) 5 6 Iload = 50mA Ground Pin Current vs.Input Voltage 200 Ground Pin Current(A) Ground Pin Current(A) 150 Iload = 50mA 100 50 No Load VOUT = 3.3V 0 0 1 2 3 4 Input Voltage(V) 5 6 Output Voltage vs.Input Voltage 6 No Load 5 4 VOUT = 3.3V 3 2 VOUT = 2.5V 1 0 0 1 2 3 4 Input Voltage(V) 5 6 Ground Pin Current vs.Load Current 190 180 170 160 150 140 130 120 110 100 90 80 70 60 0 100 Ground Current(A) Output Voltage(V) VOUT = 3.3V VOUT = 2.5V 200 300 Load Current(mA) 400 Output Voltage vs.Load Current 2.6 3.35 Output Vlotage vs.Load Current Output Voltage(V) Output Voltage(V) 2.55 3.325 2.5 3.3 2.45 VOUT = 2.5V 2.4 0 100 200 300 Load Current(mA) 400 3.275 VOUT = 3.3V 3.25 0 100 200 300 Load Current(mA) 400 SG2012 TYPICAL OPERATING CHARACTERISTICS VIN = VOUT (NOMINAL) +1V, CIN = 1F, COUT = 1F, TA = +25, unless otherwise noted. Line-Transient Response 4.5V 3.5V ILOAD = 150mA 3.1V 3V 2.9V VOUT 50mA 0mA VOUT = 3V 100S/div VIN 3.05V 3V 2.95V Load-Transient Response VIN = VOUT + 0.5V ILOAD = 0mA to 50mA CIN = 1F VOUT ILOAD VOUT = 3V 40S/div Load-Transient Response Near Dropout 3.05V 3V 2.95V VOUT = 3V VOUT Power-Supply Rejection Ratio vs.Frequency 80 70 60 PSRR(dB) 50 40 30 20 10 0 0.01 COUT = 1F COUT = 10F ILOAD = 50mA 50mA 0mA CIN = 1F VIN = VOUT + 0.1V ILOAD = 0mA to 50mA 40S/div ILOAD 0.1 1 10 100 1000 Frequency(kHz) Region of Stable COUT ESR vs.Load Current 100 Current limit vs.Temperature 1200 1100 Current limit(mA) VOUT = 3.3V 10 COUT ESR() COUT = 10F 1000 900 800 700 600 500 400 300 1 Stable Region 0.1 COUT = 1F 0.02 0.01 0 100 200 Load Current(mA) 300 400 -40 -20 0 20 40 60 80 Temperature() 100 120 140 SG2012 TYPICAL OPERATING CHARACTERISTICS VIN = VOUT(NOMINAL) +1V, CIN = 1F, COUT = 1F, TA = +25, unless otherwise noted. Output Voltage vs.Temperature 2.6 ILOAD = 300mA Output Voltage(V) 2.55 Output Voltage(V) 3.35 Output Voltage vs.Temperature 3.4 ILOAD = 300mA 2.5 3.3 2.45 VOUT = 2.5V 2.4 -40 -20 0 20 40 60 80 Temperature() 100 120 140 3.25 VOUT = 3.3V 3.2 -40 -20 0 20 40 60 80 100 120 140 Temperature() Ground Pin Current vs.Temperature 200 180 Ground Pin Current(A) Dropout Voltage vs.Load Current 600 500 Dropout Voltage(mV) TA = +125 160 140 120 100 80 60 40 -40 -20 0 VOUT = 3.3V 400 300 200 100 TA = +85 TA = +25 TA = -40 VOUT = 2.5V ILOAD = 300mA VOUT = 2.5V 0 0 50 100 150 200 250 300 350 400 20 40 60 80 Temperature() 100 120 140 Load Current(mA) Dropout Voltage vs.Load Current 600 Input Voltage(V) 6 4 2 0 Output Voltage(V) 2 1 0 Start Up VOUT = 2.5V ILOAD = 1mA 500 Dropout Voltage(mV) 400 300 200 100 VOUT = 3.3V 0 0 50 100 150 200 250 300 350 400 Load Current(mA) TA = +25 TA = -40 TA = +125 TA = +85 Time(10s/div) SG2012 Application Notes When LDO is used in handheld products, Attention must be paid to voltage spike which would damage SG2012. In such applications, voltage spike will be generated at changer interface and VBUS pin of USB interface when changer adapters and USB equipments are hot-inserted. Besides this, handheld products will be tested on the production line on the condition of no battery. Test Engineer will apply power from the connector pin which connects with positive pole of the battery. When external power supply is turned on suddenly, the voltage spike will be generated at the battery connector. The voltage spike will be very high, it always exceeds the absolute maximum input voltage (6.0V) of LDO. In order to get robust design. Design Engineer needs to clear up this voltage spike. Zener diode is a cheap and effective solution to eliminate such voltage spike. For example, BZM55B5V6 is a 5.6V small package Zener diode which can be used to remove voltage spike in cell phone design. The schematic is shown in below: Vcc Input BZM55B5V6 1uF C1 IN SG2012 GND VOUT C2 4.7uF VOUT SG2012 PACKAGE OUTLINE DIMENSIONS SOT223-3 D L1 D1 c Symbol 0.25 E1 E Dimensions In Millimeters Min Max 1.520 1.800 0.020 0.100 1.500 1.700 0.610 0.810 0.250 0.350 6.300 6.700 2.900 3.100 3.300 3.700 6.700 7.300 2.300TYP 4.500 4.700 1.500REF 0.900 0 10 Dimensions In Inches Min Max 0.060 0.071 0.001 0.004 0.059 0.067 0.024 0.032 0.010 0.014 0.248 0.264 0.114 0.122 0.130 0.146 0.264 0.287 0.091TYP 0.177 0.185 0.059REF 0.035 0 10 b L e1 A1 A2 A e A A1 A2 b c D D1 E E1 e e1 L L1 SG2012 REVISION HISTORY Location 9/05-- Data Sheet changed from preliminary to REV. A 12/06-- Data Sheet changed from REV. A to REV. B Changed to ABSOLUTE MAXIMUM RATINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Added Application Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 Page Shengbang Microelectronics Co, Ltd Unit 3, ChuangYe Plaza No.5, TaiHu Northern Street, YingBin Road Centralized Industrial Park Harbin Development Zone Harbin, HeiLongJiang 150078 P.R. China Tel.: 86-451-84348461 Fax: 86-451-84308461 www.sg-micro.com SG2012 |
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