SG2002/A 300mA, Low Power, Low Noise Low Dropout, Linear Regulators GENERAL DESCRIPTION FEATURES The SG2002/A series low-power, low-noise, low-dropout, CMOS linear voltage regulators operate from a 2.5V to 5.5V input and deliver up to 300mA. They are the perfect choice for low voltage, low power applications. An ultra low ground current (110µA at 300mA output) makes this part attractive for battery operated power systems. The SG2002/A series also offer ultra low dropout voltage (210mV at 300mA output) to prolong battery life in portable electronics. Systems requiring a quiet voltage source, such as RF applications, will benefit from the SG2002/A series’ ultra low output noise (30µVRMS). An external noise bypass capacitor connected to the device’s BP pin can further reduce the noise level. - Low Output Noise: 30µVRMS typ(10Hz to 100KHz) - Ultra-Low Dropout Voltage: The output voltage is preset to voltages in the range of 1.5V to 5.0V. Other features include a 10nA logic-controlled shutdown mode, foldback current limit and thermal shutdown protection. 210mV at 300mA output - Low 77µA No-Load Supply Current - Low 110µA Operating Supply Current - at 300mA Output Thermal-Overload Protection Output Current Limit Preset Output Voltages (±1.6% Accuracy) 10nA Logic-Controlled Shutdown Available in Multiple Output Voltage Versions Fixed Outputs of 1.5V, 1.8V, 2.5V, 2.8V, 2.85V, 3.0V,3.3V, and 5.0V Adjustable Output from 1.5V to 5.0V Devices come in 5-pin SOT23 package. APPLICATIONS Cellular Telephones Cordless Telephones PHS Telephones PCMCIA Cards Modems MP3 Player Hand-Held Instruments Palmtop Computers Electronic Planners Portable/Battery-Powered Equipment Shengbang Microelectronics Co, Ltd Tel: 86/451/84348461 www.sg-micro.com PIN CONFIGURATIONS（TOP VIEW） SG2002/A IN 1 GND 2 EN 3 5 OUT 4 BP/FB SOT23-5 REV. B ORDERING INFORMATION MODEL VOUT(V) PINPACKAGE SPECIFIED TEMPERATURE RANGE ORDERING NUMBER PACKAGE MARKING PACKAGE OPTION SG2002-1.5 1.5V SOT23-5 - 40°C to +125°C SG2002-1.5XN5/TR X215 Tape and Reel, 3000 SG2002-1.8 1.8V SOT23-5 - 40°C to +125°C SG2002-1.8XN5/TR X218 Tape and Reel, 3000 SG2002-2.5 2.5V SOT23-5 - 40°C to +125°C SG2002-2.5XN5/TR X225 Tape and Reel, 3000 SG2002-2.8 2.8V SOT23-5 - 40°C to +125°C SG2002-2.8XN5/TR X228 Tape and Reel, 3000 SG2002-2.85 2.85V SOT23-5 - 40°C to +125°C SG2002-2.85XN5/TR X22J Tape and Reel, 3000 SG2002-3.0 3.0V SOT23-5 - 40°C to +125°C SG2002-3.0XN5/TR X230 Tape and Reel, 3000 SG2002-3.3 3.3V SOT23-5 - 40°C to +125°C SG2002-3.3XN5/TR X233 Tape and Reel, 3000 SG2002-5.0 5.0V SOT23-5 - 40°C to +125°C SG2002-5.0XN5/TR X250 Tape and Reel, 3000 SG2002A adjustable SOT23-5 - 40°C to +125°C SG2002-XN5/TR X2AA Tape and Reel, 3000 ABSOLUTE MAXIMUM RATINGS IN to GND.................................................................... - 0.3V to +6V Output Short-Circuit Duration ...........................................Infinite EN to GND.................................................................. - 0.3V to +6V OUT, BP/FB to GND......................................- 0.3V to (VIN + 0.3V) Power Dissipation, PD @ TA = 25℃ SOT23-5 .....................................................................................0.4W Package Thermal Resistance SOT23-5, θJA....................................................................... 250℃/W Operating Temperature Range...........................- 40°C to +125°C Junction Temperature...........................................................+150°C Storage Temperature.............................................- 65°C to +150°C 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 PIN NAME FUNCTION 1 IN 2 GND 3 EN Shutdown Input. A logic low reduces the supply current to 10nA. Connect to IN for normal operation. 4 BP Reference-Noise Bypass(fixed voltage version only). Bypass with a low-leakage 0.01µF ceramic capacitor for reduced noise at the output. 4 FB Adjustable voltage version only—this is used to set the output voltage of the device. 5 OUT Regulator Input. Supply voltage can range from 2.5V to 5.5V. Bypass with a 1µF capacitor to GND. Ground. Regulator Output. ２ SG2002/A ELECTRICAL CHARACTERISTICS (VIN = VOUT (NOMINAL) + 0.5V or 2.5V (whichever is greater), 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, VOUT ≥2.5V, TA = +25°C TYP MAX UNITS 2.5 5.5 V -1.6 1.6 IOUT = 0.1mA to 300mA, VOUT ≥2.5V 2.3 TA = 0°C to +70°C IOUT = 0.1mA to 300mA, VOUT ≥2.5V Output Voltage Accuracy 2.7 TA = - 40°C to +125°C IOUT = 0.1mA to 300mA, VOUT,＜2.5V 2.9 TA = - 40°C to +125°C Maximum Output Current Current Limit Ground Pin Current 300 ILIM IQ Dropout Voltage (Note1) Line Regulation ΔVLNR Load Regulation ΔVLDR Output Voltage Noise Power Supply Rejection Rate en PSRR 310 No load, EN = 2V % mA 750 mA VOUT≤3.3V 77 130 VOUT＞3.3V 77 145 µA IOUT = 300mA, EN = 2V 110 IOUT = 1mA 0.8 IOUT = 300mA 210 340 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 300mA, COUT = 1µF f = 10Hz to 100KHz, CBP = 0.01µF, COUT = 10µF mV 30 µVRMS CBP = 0.1µF, ILOAD = 50mA, f = 100Hz, 74 dB COUT = 1µF f = 1KHz, 54 dB SHUTDOWN EN Input Threshold VIH VIL 2.0 VIN = 2.5V to 5.5V 0.4 TA = +25°C 0.01 TA = +125°C 0.01 TA = +25°C 0.01 TA = +125°C 0.01 TA = +25°C 30 µs TSHDN 160 ℃ ΔTSHDN 15 ℃ EN Input Bias Current IB(SHDN) EN = 0V and EN = 5.5V Shutdown Supply Current IQ(SHDN) EN = 0.4V CBP = 0.01µF Shutdown Exit Delay(Note2) COUT = 1µF, No load 1 V 1 µA µA 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 + 0.5V. (Only applicable for VOUT = +2.5V to +5.0V.) Note 2: Time needed for VOUT to reach 95% of final value. ３ SG2002/A TYPICAL OPERATION CIRCUIT INPUT 2.5V TO 5.5V OUT IN CIN 1μF ON OFF INPUT 2.5V TO 5.5V OUTPUT OUT IN R1 SG2002A COUT 1μF CIN 1μF OFF GND R2 COUT 1μF SG2002 ON FB EN OUTPUT EN BP CBP 0.01μF GND Adjustable Voltage Version Fixed Voltage Version Standard 1% Resistor Values for Common Output Voltages of Adjustable Voltage Version VOUT(V) 1.5 1.8 2.5 2.8 2.85 3.0 3.3 5.0 R1(kΩ) 13 28 63.4 78.7 80.6 88.7 95.3 187 R2(kΩ) 61.9 61.9 61.9 61.9 61.9 61.9 57.6 61.9 Note: VOUT = (R1 + R2)/ R2 × 1.2395 ４ SG2002/A TYPICAL OPERATING CHARACTERISTICS VIN = VOUT(NOMINAL) + 0.5V or 2.5V (whichever is greater), CIN = 1µF, COUT = 1µF, CBP = 0.01µF, TA = +25℃, unless otherwise noted. Ground Pin Current vs.Input Voltage Ground Pin Current vs.Input Voltage 350 300 I load = 50mA 80 Ground Pin Current(µA) Ground Pin Current(µA) 100 60 No Load 40 20 Iload = 50mA 250 200 150 No Load 100 50 V OUT = 2.5V 0 VOUT = 5V 0 0 1 2 3 4 Input Voltage(V) 5 6 0 1 Output Voltage vs.Input Voltage 2 3 4 Input Voltage(V) Output Voltage vs.Temperature No Load ILOAD = 150mA Output Voltage(V) 5 Output Voltage(V) 6 2.6 6 4 VOUT = 5V 3 2 VOUT = 2.5V 2.55 2.5 2.45 1 VOUT = 2.5V 2.4 0 0 1 2 3 4 Input Voltage(V) 5 -40 -20 6 0 20 40 60 80 Temperature(℃) 100 120 140 Ground Pin Current vs.Temperature Output Voltage vs.Temperature 200 5.2 180 Ground Pin Current(μA) ILOAD = 150mA Output Voltage(V) 5 5.1 5 4.9 VOUT = 5V VOUT = 5V 160 140 120 100 VOUT = 2.5V 80 60 40 ILOAD = 150mA 20 0 4.8 -40 -20 0 20 40 60 80 Temperature(℃) -40 -20 100 120 140 ５ 0 20 40 60 80 Temperature(℃) 100 120 140 SG2002/A TYPICAL OPERATING CHARACTERISTICS VIN = VOUT(NOMINAL) + 0.5V or 2.5V (whichever is greater), CIN = 1µF, COUT = 1µF, CBP = 0.01µF, TA = +25℃, unless otherwise noted. Line-Transient Response Load-Transient Response VIN = VOUT + 0.5V 4.5V ILOAD = 0mA to 50mA VIN 3.5V CIN = 1μF 3.05V 3V 2.95V ILOAD = 100mA VOUT 3.1V VOUT 3V 50mA 2.9V 0mA ILOAD VOUT = 3V 3.05V VOUT = 3V 100µS/div 40µS/div Load-Transient Response Near Dropout Shutdown Exit Delay VOUT = 3V 2V ILOAD = 50mA VOUT 3V EN 2.95V 0V CBP = 0.01µF 50mA ILOAD 0mA VOUT 2V CIN = 1μF VIN = VOUT + 0.1V 1V CBP = 0.1µF 0V ILOAD = 0mA to 50mA VOUT = 2.5V 100µS/div 40µS/div Entering Shutdown Shutdown Exit Delay ILOAD = 50mA 0V EN 0V CBP = 0.01µF 5V VOUT 4V 2V No Load 2V EN 2V VOUT CBP = 0.1µF VOUT = 5V 0V 0V 100µS/div VOUT = 5V 40µS/div ６ SG2002/A TYPICAL OPERATING CHARACTERISTICS VIN = VOUT(NOMINAL) + 0.5V or 2.5V (whichever is greater), CIN = 1µF, COUT = 1µF, CBP = 0.01µF, TA = +25℃, unless otherwise noted. Output Noise Spectral Density vs.Frequency Output Noise vs.BP Capacitance 80 CBP = 0.01μF ILOAD = 10mA 70 Output Noise(µVRMS) Output Noise Spectral Density (μV/√Hz) 10 1 COUT = 1μF 0.1 0.1 60 VOUT = 3.0V 50 40 30 20 VOUT = 2.5V 1 10 100 0 0.001 1000 Frequency(kHz) Output Noise vs.Load Current f = 10Hz to 100kHz CBP = 0.01μF COUT = 10μF 90 80 VOUT = 3.0V COUT = 10μF ILOAD = 10mA CBP = 0.1μF 70 VOUT = 5.0V 50 0.1 VOUT(200μV/div) Output Noise(µVRMS) 0.01 BP Capacitance(µF) Output Noise 10Hz To 100KHz 100 60 f = 10Hz to 100kHz COUT = 10μF ILOAD = 10mA 10 COUT = 10μF 0.01 0.01 VOUT = 5.0V VOUT = 3.0V 40 30 20 VOUT = 2.5V 10 0 1 10 100 Load Current(mA) 1000 Time(400μs/div) Power-Supply Rejection Ratio vs.Frequency Ground Pin Current vs.Load Current 170 80 CBP = 0.1μF ILOAD = 50mA 160 Ground Pin Current(µA) 70 PSRR(dB) 60 50 COUT = 10μF 40 30 20 COUT = 1μF 10 0 0.01 150 140 VOUT = 5V 130 120 110 100 VOUT = 2.5V 90 80 70 0.1 1 10 100 1000 0 Frequency(kHz) ７ 100 200 Load Current(mA) 300 SG2002/A TYPICAL OPERATING CHARACTERISTICS VIN = VOUT(NOMINAL) + 0.5V or 2.5V (whichever is greater), CIN = 1µF, COUT = 1µF, CBP = 0.01µF, TA = +25℃, unless otherwise noted. Output Voltage vs.Load Current 5 2.55 4.975 Output Voltage(V) Output Voltage(V) Output Voltage vs.Load Current 2.6 2.5 2.45 4.95 4.925 VOUT = 5V VOUT = 2.5V 2.4 4.9 0 100 200 Load Current(mA) 300 0 100 200 Load Current(mA) Dropout Voltage vs.Load Current Dropout Voltage vs.Load Current 360 TA = +125℃ Dropout Voltage(mV) Dropout Voltage(mV) 320 280 TA = +85℃ 240 200 TA = +25℃ 160 TA = -40℃ 120 80 40 VOUT = 2.5V 0 0 30 60 220 200 180 160 140 120 100 80 60 40 20 0 90 120 150 180 210 240 270 300 TA = +125℃ TA = +85℃ TA = +25℃ TA = -40℃ VOUT = 5V 0 30 60 90 120 150 180 210 240 270 300 Load Current(mA) Load Current(mA) Region of Stable COUT ESR vs.Load Current Current limit vs.Temperature 100 1200 VOUT = 3V 1100 1000 COUT = 10μF 10 900 COUT ESR(Ω) Current limit(mA) 300 800 700 600 1 COUT = 1μF Stable Region 0.1 500 400 0.02 0.01 300 -40 -20 0 20 40 60 80 Temperature(℃) 0 100 120 140 ８ 50 100 150 200 Load Current(mA) 250 300 SG2002/A TYPICAL OPERATING CHARACTERISTICS VIN = VOUT(NOMINAL) + 0.5V or 2.5V (whichever is greater), CIN = 1µF, COUT = 1µF, CBP = 0.01µF, TA = +25℃, unless otherwise noted. EN Pin Voltage(V) Start Up 6 4 2 Output Voltage(V) 0 2 1 VIN = 5V VOUT = 2.5V CIN = COUT = 1μF ILOAD = 1mA 0 Time(10μs/div) Application Notes When LDO is used in handheld products, Attention must be paid to voltage spike which would damage SG2002. 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: 1 Vcc Input BZM55B5V6 1uF IN VOUT SG2002 C1 EN 3 GND 2 5 VOUT C2 BP/FP 4 4.7uF 0.01uF Control ９ SG2002/A PACKAGE OUTLINE DIMENSIONS SOT23-5 D θ b 0.20 Symbol L E E1 e C A1 e1 Min Max Min Max 1.250 0.041 0.049 A1 0.000 0.100 0.000 0.004 A2 1.050 1.150 0.041 0.045 b 0.300 0.400 0.012 0.016 c 0.100 0.200 0.004 0.008 D 2.820 3.020 0.111 0.119 E 1.500 1.700 0.059 0.067 E1 2.650 2.950 0.104 0.116 e1 L A A2 Dimensions In Inches 1.050 e １０ Dimensions In Millimeters A L 0 0.950TYP 1.800 2.000 0.700REF 0.037TYP 0.071 0.079 0.028REF L1 0.300 0.600 0.012 0.024 θ 0° 8° 0° 8° SG2002/A 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 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 １１ SG2002/A