SD5087-GEC

Low Dropout Linear Regulator SD5087 Feature Description The SD5087 is 300mA low dropout linear regulator optimized to provide a high performance solution to low power system. The device offers a new level of cost-effective performance in cellular phones, laptop and notebook computers, and other portable devices. Proprietary design techniques ensure high performance. The SD5087 is designed to make use of low cost ceramic capacitors which ensure the stability of the output current, and enhance the efficiency in order to prolong the battery life of those portable devices. The SD5087 regulators are available in the industry standard SOT-23-5/ SC70-5/ DFN1.2*1.6 -4L/ DFN2*2-6L power packages (or upon request). ● Input Voltage: 1.8V ～ 5.5V ● 0.47μF～10μF Ceramic Capacitors Ensure the ● Stability 300mA Maximum Output Current ● Low Quiescent Current: 60μA ● Shut-down Current: < 0.1μA ● Overload/Over Temperature Protection ● Specified from: -45℃ ～ +80℃ Application ● Laptop/notebook/palmtop computers ● Portable devices ● Disk driver ● Battery chargers ● Bluetooth and other radio products ● MP3/MP4 Players ● Cellular phones, radiophone, digital cameras, and portable electronics Order Information SD5087- ① ②: SYMBOL ① ② DESCRIPTION (SOT) Denotes Output Voltage: K: 1.2V I: 1.3V B: 1.5V C: 1.8V H: 2.5V E: 2.8V F: 3.0V G: 3.3V Denotes Package Type: B: SOT-353-5(SC70-5) SYMBOL ① ② Rev.1,Jan-2014 E: SOT-23-5L DESCRIPTION (DFN) Denotes Output Voltage: E: 2.8V L:3.1V G: 3.3V Denotes Package Type: D: DFN1.2*1.6-4L K: DFN2*2-6L www.shouding.net -1- Low Dropout Linear Regulator SD5087 Typical Application Circuit SD5087 Pin Assignment and Description PIN No. NAME DESCRIPTION 5, 7 GND Ground 4 4 VOUT Output Voltage 1 3 3 VIN Power Supply 3 1 2 EN ON/OFF Control 4 5 1, 6 NC No Connect SOT-23-5L/ SC70-5L DFN1.2*1.6-4L DFN2*2-6L 2 2 5 Absolute Maximum Ratings (Note 1) ● Input Supply, EN Voltage .......................................................................................................-0.3V ～ 6V ● Power Dissipation, PD @ TA=25℃ SOT-23-5L ......................................................................................................................................0.4W SC70-5, DFN1.2*1.6-4L .................................................................................................................0.3W DFN2*2-6L ........................................................................................................................................0.5W ● Operating Temperature Range (Note 2)............................................................................-45℃ ～ +80℃ ● Storage Temperature Range.......................................................................................... -65℃ ～ +150℃ ● Junction Temperature Range.........................................................................................................+125℃ ● Lead Temperature (Soldering, 10 sec.)......................................................................................... +265℃ Note 1: Stresses beyond those listed Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. Note 2: The SD5087 is guaranteed to meet performance specifications from 0℃ to 70℃. Specifications over the –40℃ to 85℃ operating temperature range are assured by design, characterization and correlation with statistical process controls. Rev.1,Jan-2014 www.shouding.net -2- SD5087 Low Dropout Linear Regulator Electrical Characteristics Operating Conditions: TA=25℃, VIN =VOUT + 0.5V, CIN = COUT =1μF , unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS 1.8 5.5 V -2 +2 % VIN Operating Voltage Range ΔVOUT Output Voltage Accuracy IOUT = 10mA IQ Quiescent Current 2.2V ≤ VIN ≤ 5.5V 60 μA IOFF Shutdown Current VEN = 0V, VIN = 5V 0.02 μA VDROP Dropout Voltage: VIN -VOUT IOUT =150mA, VOUT ≤1.8V IOUT =150mA, VOUT ≥2.8V 150 mV VENH EN Threshold Voltage (High) VIN = 5V VENL EN Threshold Voltage (Low) IEN Enable Pin Current ILIM Current Limited VIN =VOUT + 1V PRSS Power Supply Rejection Rate f = 1kHz, IOUT = 100mA ΔVLINE Line Regulation ΔVLOAD Load Regulation TSD ΔTSD 1.4 V 0.8 0.1 330 400 V μA 560 mA -65 dB VIN = (VOUT+0.5) to 5.5V, IOUT = 0mA 2 mV 0mA ≤ IOUT ≤ 100mA 10 mV Thermal Shutdown Temperature 160 ℃ Thermal Shutdown Hysteresis 20 ℃ Rev.1,Jan-2014 www.shouding.net -3- SD5087 Low Dropout Linear Regulator Typical Performance Characteristics Quiescent Current vs. Input Voltage (Vout=1.8V Io=0A) 140 100 130 95 IO=300mA 120 90 Ground Current (uA) Quiescent Current(uA) Ground Current vs. Input Voltage (Vout=1.8V) 85 80 75 70 65 110 100 90 60 70 55 60 50 IO=150mA 80 IO=1mA 50 2 3 4 5 2 6 2.5 3 Quiescent Current vs. Input Voltage (Vout=2.8V Io=0A) 4.5 5 5.5 6 Ground Current vs. Input Voltage (Vout=2.8V) 150 95 140 90 130 Ground Current (uA) 100 85 80 75 70 65 60 IO=300mA 120 110 IO=150mA 100 90 IO=1mA 80 70 55 60 50 2.5 3 3.5 4 4.5 5 5.5 50 6 2.5 3 3.5 Input Voltage (V) 4 4.5 5 5.5 6 Input Voltage (V) Ground Current vs. Input Voltage (Vout=3.3V) Quiescent Current vs. Input Voltage (Vout=3.3V Io=0A) 160 100 95 150 90 140 Ground Current (uA) Quiescent Current(uA) 4 Input Voltage (V) Input Voltage (V) Quiescent Current(uA) 3.5 85 80 75 70 65 60 130 120 110 IO=300mA 100 90 IO=150mA 80 55 70 50 3 3.5 4 4.5 5 5.5 6 Input Voltage (V) Rev.1,Jan-2014 IO=1mA 60 2 2.5 3 3.5 4 4.5 5 5.5 6 Input Voltage (V) www.shouding.net -4- Low Dropout Linear Regulator SD5087 Typical Performance Characteristics(con’t) Output Voltage vs. Input Voltage (Vout=1.8V) 1.9 1.9 1.88 1.88 1.86 IO=1mA 1.84 1.86 Output Voltage (V) Output Voltage (V) Output Voltage vs. Output Current (Vout=1.8V) 1.82 1.8 1.78 IO=150mA 1.76 IO=300mA 1.74 1.84 1.82 1.78 2 2.5 3 3.5 4 4.5 5 5.5 1.7 6 0 Input Voltage (V) Output Voltage vs. Input Voltage (Vout=2.8V) 50 100 150 200 250 300 350 Output Current (mA) Output Voltage vs. Output Current (Vout=2.8V) 3 3 2.9 IO=1mA 2.9 2.8 2.8 2.7 2.7 2.6 Output Voltage (V) Output Voltage (V) VIN =4V 1.72 1.7 IO=150mA 2.5 IO=300mA 2.4 2.3 VIN =4V VIN =5V 2.6 2.5 2.4 2.3 2.2 2.2 2.1 2.1 2 2 2.5 3 3.5 4 4.5 5 Input Voltage (V) 5.5 6 0 50 100 150 200 250 Output Current (mA) 300 350 Output Voltage vs. Output Current (Vout=3.3V) Output Voltage vs. Input Voltage (Vout=3.3V) 3.5 4 3.4 3.9 IO=1mA 3.8 3.2 Output Voltage (V) Output Voltage (V) VIN =5V 1.76 1.74 1.72 3.3 VIN =3V 1.8 IO=150mA 3.1 3 2.9 IO=300mA 2.8 3.7 3.6 3.5 3.3 2.7 3.2 2.6 3.1 2.5 2.5 3 3.5 4 4.5 5 5.5 6 Input Voltage (V) Rev.1,Jan-2014 www.shouding.net VIN =5V 3.4 VIN =4V 3 0 50 100 150 200 250 Output Current (mA) 300 350 -5- LDO linear regulator SD5087 Typical Performance Characteristics(con’t) Start Up (VIN = 3.6V, IOUT = 100mA) VOUT 2.00V/div VIN 2.00V/div M 2.50ms Rev.1,Jan-2014 www.shouding.net -6- LDO linear regulator Pin Functions SD5087 NC: Not Connect. EN: ON/OFF Control (High Enable). Forcing this pin above 1.4V enables the part. Forcing this pin below 0.8V can shuts down the device. In shutdown, all functions are disabled drawing 1μF on the SD5087 input and the amount of capacitance can be increased without limit. The input capacitor must be located a distance of not more than 0.5 inch from the input pin of the IC and returned to a clean analog ground. Any good quality ceramic or tantalum can be used for this capacitor. The capacitor with larger value and lower ESR (equivalent series resistance) provides better PSRR and line-transient response. The output capacitor must meet both requirements for minimum amount of capacitance and ESR in all LDOs application. The power supply rejection ratio (PSRR) is defined as the gain from the input to output divided by the gain from the supply to the output. The PSRR is found to be : The SD5087 is designed specifically to work with low ESR ceramic output capacitor in space-saving and performance consideration. Using a ceramic capacitor whose value is at least 1μF with ESR is > 25mΩ The SD5087 still works well with output capacitor of other types due to the wide stable ESR range. Note that when heavy load measuring, Δsupply will cause Δtemperature. And Δtemperature will cause Δoutput voltage. So the heavy load PSRR measuring must include temperature effect. Current Limit The SD5087 contains an independent current limiter, which monitors and controls the pass transistor's gate voltage, limiting the output current to 0.3A (typ.). The output can be shorted to ground indefinitely without damaging the part. Enable Function The SD5087 features an LDO regulator enable/ disable function. To assure the LDO regulator will switch on, the EN turn on control level must be greater than 1volts. For to protecting the system, the SD5087 have a quick-discharge function. If the enable function is not needed in a specific application, it may be tied to VIN to keep the LDO regulator in a continuously on state. Rev.1,Jan-2014 www.shouding.net -8- SD5087 LDO linear regulator Packaging Information SOT-23-5L Package Outline Dimension Symbol Dimensions In Millimeters Min Max Dimensions In Inches Min Max A 1.050 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 0.500 0.012 0.020 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 e 0.950(BSC) 0.037(BSC) e1 1.800 2.000 0.071 0.079 L 0.300 0.600 0.012 0.024 θ 0° 8° 0° 8° Rev.1,Jan-2014 www.shouding.net -9- SD5087 LDO linear regulator Packaging Information SC70-5 Package Outline Dimension Symbol Dimensions In Millimeters Min Max Dimensions In Inches Min Max A 0.900 1.100 0.035 0.043 A1 0.000 0.100 0.000 0.004 A2 0.900 1.100 0.035 0.039 b 0.150 0.350 0.006 0.014 c 0.080 0.150 0.003 0.006 D 2.000 2.200 0.079 0.087 E 1.150 1.350 0.045 0.053 E1 2.150 2.450 0.085 0.096 e e1 0.650(BSC) 1.200 L 0.026(BSC) 1.400 0.047 0.055 0.021 REF 0.525 REF L1 0.260 0.460 0.010 0.018 θ 0° 8° 0° 8° Rev.1,Jan-2014 www.shouding.net -10- SD5087 LDO linear regulator Packaging Information DFN1.2*1.6-4L Package Outline Dimension Symbol Dimensions In Millimeters Dimensions In Inches Min Max Min Max A 0.500 0.600 0.020 0.024 A1 0.000 0.050 0.000 0.002 A3 0.152 REF. 0.006 REF. D 1.500 1.700 0.059 0.067 E 1.100 1.300 0.043 0.051 D1 0.560 0.760 0.022 0.030 E1 0.700 0.900 0.028 0.035 b 0.250 0.350 0.010 0.014 b1 0.175 0.275 0.007 0.011 e L k Rev.1,Jan-2014 0.600 TYP. 0.150 0.024 TYP. 0.250 0.200 MIN. www.shouding.net 0.006 0.010 0.008 TYP. -11- SD5087 LDO linear regulator Packaging Information DFN2*2-6L Package Outline Dimension Symbol Dimensions In Millimeters Dimensions In Inches Min Max Min Max A 0.700/0.800 0.800/0.900 0.028/0.031 0.031/0.035 A1 0.000 0.050 0.000 0.002 A3 0.203 REF. 0.008 REF. D 1.924 2.076 0.076 0.082 E 1.924 2.076 0.075 0.083 D1 1.100 1.300 0.043 0.051 E1 0.600 0.800 0.024 0.031 k b 0.200 MIN. 0.200 e L 0.008 MIN. 0.300 0.007 0.650 TYP. 0.274 0.012 0.026 TYP. 0.426 0.011 0.017 Shouding reserves the right to update the version of datasheet without notice at any time. Information furnished by Shouding is believed to be accurate and reliable. However, no responsibility is assumed for its use. Rev.1,Jan-2014 www.shouding.net -12-