400mA , Low Power, Low Dropout, Linear Regulators SG2012 GENERAL DESCRIPTION FEATURES 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 (120µA 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. - Ultra-Low Dropout Voltage: 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. 280mV at 400mA output - Low 80µA No-Load Supply Current - Low 120µA 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 CONFIGURATIONS（TOP VIEW） APPLICATIONS GND Cellular Telephones Digital Cameras MP3、MP4 USB 2.0 Modems PC Cameras Hand-Held Instruments Electronic Dictionarys Portable/Battery-Powered Equipment 1 2 3 OUT GND IN SOT223-3 OUT TYPICAL OPERATION CIRCUIT INPUT OUTPUT IN OUT CIN 1μF COUT 1μF 1 2 3 GND OUT IN SOT223-3(R-Type) GND SG Microelectronics Co, Ltd Tel: 86/451/84348461 www.sg-micro.com REV. B ORDERING INFORMATION MODEL VOUT (V) SG2012-1.5 1.5V SG2012-1.8 1.8V SG2012-2.5 2.5V SG2012-2.8 2.8V SG2012-3.0 3.0V SG2012-3.3 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 - 40°C to +125°C - 40°C to +125°C - 40°C to +125°C - 40°C to +125°C - 40°C to +125°C - 40°C to +125°C ORDERING NUMBER PACKAGE MARKING SG2012-1.5XKC3/TR SG2012-1.5XKC3 SG2012-1.5XKC3R/TR SG2012-1.5XKC3R SG2012-1.8XKC3/TR SG2012-1.8XKC3R/TR SG2012-2.5XKC3/TR SG2012-2.5XKC3R/TR SG2012-1.8XKC3 SG2012-1.8XKC3R SG2012-2.5XKC3 SG2012-2.5XKC3R SG2012-2.8XKC3/TR SG2012-2.8XKC3 SG2012-2.8XKC3R/TR SG2012-3.0XKC3/TR SG2012-3.0XKC3R/TR SG2012-3.3XKC3/TR SG2012-3.3XKC3R/TR 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 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................. ..........- 40°C to +125°C Junction Temperature...........................................................+150°C Storage Temperature.............................................- 65°C to +150°C Power Dissipation, PD @ TA = 25℃ SOT223-3...................................................................................0.74W Package Thermal Resistance SOT223-3, θJA.......................................................................135°C/W Lead Temperature (soldering, 10s) ....................................+260°C 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. ２ SG2012 ELECTRICAL CHARACTERISTICS (VIN = VOUT (NOMINAL) +1V, TA = - 40°C to +125°C, unless otherwise noted. Typical values are at TA = + 25°C.) PARAMETER Input Voltage SYMBOL CONDITIONS MIN VIN IOUT = 0.1mA, TA = +25°C TYP MAX UNITS 2.5 5.5 V -1.8 1.8 IOUT = 0.1mA to 400mA, Output Voltage Accuracy 2.6 TA = 0°C to +70°C IOUT = 0.1mA to 400mA, 3.1 TA = - 40°C to +125°C 400 Output Current Current Limit Ground Pin Current ILIM IQ Dropout Voltage(Note1) Line Regulation ΔVLNR Load Regulation ΔVLDR Output Voltage Noise Power Supply Rejection Rate en % 410 mA 750 No load 80 IOUT = 400mA 120 mA 130 µA IOUT = 1mA 0.8 IOUT = 400mA 280 440 0.004 0.15 %/V 0.0005 0.002 %/mA VIN = 2.5V or (VOUT + 0.1V) to 5.5V, IOUT = 1mA IOUT = 0.1mA to 400mA, COUT = 1µF 120 µVRMS f = 100Hz, 74 dB f = 1KHz, 54 dB TSHDN 160 ℃ ΔTSHDN 15 ℃ PSRR f = 10Hz to 100KHz, COUT = 10µF mV ILOAD = 50mA, COUT = 1µF THERMAL PROTECTION Thermal Shutdown Temperature Thermal Shutdown Hysteresis 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) ３ SG2012 TYPICAL OPERATING CHARACTERISTICS VIN = VOUT (NOMINAL) + 1V, CIN = 1µF, COUT = 1µF, TA = +25℃, unless otherwise noted. Ground Pin Current vs.Input Voltage Ground Pin Current vs.Input Voltage 200 Iload = 50mA 80 Ground Pin Current(µA) Ground Pin Current(µA) 100 60 No Load 40 20 Iload = 50mA 150 100 No Load 50 VOUT = 2.5V VOUT = 3.3V 0 0 0 1 2 3 4 Input Voltage(V) 5 6 0 1 Output Voltage vs.Input Voltage No Load Ground Current(µA) Output Voltage(V) 5 4 VOUT = 3.3V 3 2 VOUT = 2.5V 1 0 1 2 3 4 Input Voltage(V) 5 190 180 170 160 150 140 130 120 110 100 90 80 70 60 6 VOUT = 3.3V VOUT = 2.5V 0 6 Output Voltage vs.Load Current 100 200 300 Load Current(mA) 400 Output Vlotage vs.Load Current 2.6 3.35 2.55 3.325 Output Voltage(V) Output Voltage(V) 5 Ground Pin Current vs.Load Current 6 0 2 3 4 Input Voltage(V) 2.5 2.45 3.3 3.275 VOUT = 3.3V VOUT = 2.5V 3.25 2.4 0 100 200 300 Load Current(mA) 0 400 ４ 100 200 300 Load Current(mA) 400 SG2012 TYPICAL OPERATING CHARACTERISTICS VIN = VOUT (NOMINAL) +1V, CIN = 1µF, COUT = 1µF, TA = +25℃, unless otherwise noted. Line-Transient Response Load-Transient Response VIN = VOUT + 0.5V 4.5V 3.5V ILOAD = 0mA to 50mA VIN CIN = 1μF 3.05V 3V 2.95V ILOAD = 150mA VOUT 3.1V 3V VOUT 2.9V 50mA 0mA ILOAD VOUT = 3V VOUT = 3V 40µS/div 100µS/div Power-Supply Rejection Ratio vs.Frequency Load-Transient Response Near Dropout 80 VOUT = 3V 3.05V ILOAD = 50mA 70 VOUT 3V 60 PSRR(dB) 2.95V 50mA ILOAD 0mA 50 COUT = 10μF 40 30 20 CIN = 1μF VIN = VOUT + 0.1V COUT = 1μF 10 ILOAD = 0mA to 50mA 0 0.01 0.1 1 10 1200 VOUT = 3.3V 1100 COUT ESR(Ω) Current limit(mA) COUT = 10μF 1 1000 Current limit vs.Temperature Region of Stable COUT ESR vs.Load Current 100 10 100 Frequency(kHz) 40µS/div COUT = 1μF Stable Region 0.1 1000 900 800 700 600 500 400 0.02 0.01 300 0 100 200 Load Current(mA) 300 400 -40 -20 ５ 0 20 40 60 80 Temperature(℃) 100 120 140 SG2012 TYPICAL OPERATING CHARACTERISTICS VIN = VOUT(NOMINAL) +1V, CIN = 1µF, COUT = 1µF, TA = +25℃, unless otherwise noted. Output Voltage vs.Temperature Output Voltage vs.Temperature 3.4 2.6 ILOAD = 300mA Output Voltage(V) 2.55 2.5 2.45 3.35 3.3 3.25 VOUT = 3.3V VOUT = 2.5V 3.2 2.4 -40 -20 0 20 40 60 80 Temperature(℃) -40 -20 100 120 140 0 20 40 60 80 100 120 140 Temperature(℃) Ground Pin Current vs.Temperature Dropout Voltage vs.Load Current 200 600 500 VOUT = 3.3V 160 Dropout Voltage(mV) Ground Pin Current(μA) 180 140 120 VOUT = 2.5V 100 80 TA = +125℃ 400 TA = +85℃ TA = +25℃ 300 TA = -40℃ 200 100 60 ILOAD = 300mA VOUT = 2.5V 0 40 -40 -20 0 20 40 60 80 Temperature(℃) 0 100 120 140 50 100 150 200 250 300 350 400 Load Current(mA) Start Up Dropout Voltage vs.Load Current Input Voltage(V) 600 500 TA = +125℃ 400 TA = +85℃ 300 TA = +25℃ TA = -40℃ 200 100 VOUT = 3.3V 0 0 50 100 150 VOUT = 2.5V ILOAD = 1mA 6 4 2 0 Output Voltage(V) Dropout Voltage(mV) Output Voltage(V) ILOAD = 300mA 200 250 300 350 400 Load Current(mA) 2 1 0 Time(10µs/div) ６ 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 IN 1uF C1 SG2012 VOUT VOUT C2 4.7uF GND ７ SG2012 PACKAGE OUTLINE DIMENSIONS SOT223-3 D L1 D1 c Symbol A A1 A2 b c D D1 E E1 e e1 L L1 θ E E1 0.25 L b e θ A2 A A1 e1 ８ Dimensions In Millimeters Min Max Dimensions In Inches 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° 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° SG2012 REVISION HISTORY Location Page 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 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 ９ SG2012