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| EUP7913/A 300mA Low-Noise LDO Without Bypass Capacitor DESCRIPTION The EUP7913/A is an efficient CMOS low dropout (LDO) voltage regulator optimized for ultra-low-noise applications. It offers high output accuracy, extremely low dropout voltage, low ground current and fast start-up time. The EUP7913/A provides a very low noise output without a bypass capacitor, ideal for RF applications where a clean supply voltage source is required. Specifically designed for handheld and battery-powered devices, the EUP7913/A provides a TTL-logic-compatible enable pin. When the EUP7913/A is disabled, power consumption drops nearly to zero. Key features include current limit, thermal shutdown and faster transient response. The EUP7913/A works with low-ESR ceramic capacitors. Available in the SOT23-3 or SOT23-5 space saving package which reduces the amount of board space necessary for power applications. The EUP7913/A offers wide fixed output voltage versions. FEATURES 2.5V to 5.5V Input Voltage Range 30V(rms) Output Noise 200mV Dropout @ 300mA 70dB PSRR at 1kHz No Bypass Capacitor Low 30A Ground Current Guaranteed 300mA Output Current Stable with a 1F Ceramic Output Capacitor When VOUT 1.5V, or 2.2F when VOUT<1.5V Excellent Load/Line Transient Thermal Shutdown and Current Limit Protection Available 1.2V to 3.6V fixed output voltages (50mV increments) Space-Saving SOT23-3 & SOT23-5 Package RoHS Compliant and 100% Lead (Pb)-Free APPLICATIONS Cellular Phones Camera Modules PDA and Palmtop Computers Consumer/Personal Electronics Block Diagram Figure 1. DS7913/A Ver1.1 Dec. 2008 1 EUP7913/A Typical Application Circuit Figure 2. EUP7913 Fixed-Voltage Regulator Figure 3. EUP7913A Fixed-Voltage LDO Regulator DS7913/A Ver1.1 Dec. 2008 2 EUP7913/A Pin Configurations Package Type Pin Configurations (Top View) Package Type Pin Configurations (Top View) SOT23-3 SOT23-5 Pin Description NAME EN GND OUT IN NC EUP7913 (SOT23-3) 1 2 3 EUP7913A (SOT23-5) 3 2 5 1 4 DESCRIPTION Active chip for logic high. When EN turns logic low, the devices goes shutdown. Ground pin Output voltage of the LDO Input voltage of the LDO No connected DS7913/A Ver1.1 Dec. 2008 3 EUP7913/A Ordering Information Order Number EUP7913-12VIR1 EUP7913-15VIR1 EUP7913-18VIR1 EUP7913-25VIR1 EUP7913-28VIR1 EUP7913-285VIR1 EUP7913-30VIR1 EUP7913-33VIR1 EUP7913A-12VIR1 EUP7913A-15VIR1 EUP7913A-18VIR1 EUP7913A-25VIR1 EUP7913A-28VIR1 EUP7913A-285VIR1 EUP7913A-30VIR1 EUP7913A-33VIR1 EUP7913A-475VIR1 Package Type SOT23-3 SOT23-3 SOT23-3 SOT23-3 SOT23-3 SOT23-3 SOT23-3 SOT23-3 SOT23-5 SOT23-5 SOT23-5 SOT23-5 SOT23-5 SOT23-5 SOT23-5 SOT23-5 SOT23-5 1/4 1/4 1/4 1/4 Marking DT xxxx DC xxxx DD xxxx DB xxxx DE xxxx DF xxxx DG xxxx DH xxxx xxxxx AF1T xxxxx AF1C xxxxx AF1D xxxxx AF1B xxxxx AF1E xxxxx AF1F xxxxx AF1G xxxxx AF1H xxxxx AF1I Operating Temperature Range -40 C to +85C -40 C to +85C -40 C to +85C -40 C to +85C -40 C to +85C -40 C to +85C -40 C to +85C -40 C to +85C -40 C to +85C -40 C to +85C -40 C to +85C -40 C to +85C -40 C to +85C -40 C to +85C -40 C to +85C -40 C to +85C -40 C to +85C EUP7913/A- 1/4 Lead Free Code 1: Lead Free 0: Lead Packing R: Tape & Reel Operating temperature range I: Industry Standard Package Type V: SOT23 Output Voltage 12: 1.2V 15: 1.5V 18: 1.8V 25: 2.5V 28: 2.8V 285: 2.85V 30: 3.0V 33: 3.3V 475: 4.75V DS7913/A Ver1.1 Dec. 2008 4 EUP7913/A Absolute Maximum Ratings (1) IN,OUT and EN to GND-----------------------------------------------------------0.3V to 6V Junction Temperature ---------------------------------------------------------------------- 150C Storage Temperature Range ---------------------------------------------------- -65C to +150C Lead Temperature -------------------------------------------------------------------------- 260C Thermal Resistance JA (SOT23-3) -----------------------------------------------------250C/W Thermal Resistance JA (SOT23-5) -----------------------------------------------------220C/W ESD Rating Human Body Model --------------------------------------------------------------------- O 2kV Recommend Operating Conditions (2) VIN ----------------------------------------------------------------------------------- 2.5V to 5.5V VEN ------------------------------------------------------------------------------------ 0V to 5.5V Operating Temperature Range ------------------------------------------------ -40C to +85C Note (1): Stress beyond those listed under "Absolute Maximum Ratings" may damage the device. Note (2): The device is not guaranteed to function outside the recommended operating conditions. Electrical Characteristics Conditions: VIN=VOUT+0.5V or 2.5V whichever is greater, VEN=VIN,CIN=COUT=1uF,TA= -40C to +85C ,Unless otherwise specified. Symbol Parameter Input Voltage Conditions IOUT=1mA to 30mA,TA= +25J IOUT=1mA to 30mA, TA=-40J to +85J Min 2.5 -2 -3.0 EUP7913 Typ Max. 5.5 2 3.0 Unit V % mA mA mV A %/V mV A VOUT Output Voltage Accuracy IOUTMAX Maximum Output Current 300 ILIMIT Current Limit VOUT=VOUT(nom) x 90% 550 VOUT 3V , IOUT=300mA 180 200 VDROP Dropout Voltage (Note3) 2.4 VOUT 3V, IOUT=300mA 200 300 IQ Quiescent Current No Load 30 50 VLNR Line Regulation VIN=(VOUT+0.5V) to 5.5V, IOUT=10mA 0.02 0.15 VLDR Load Regulation 1mA IOUT 300mA 15 30 0.3 1.5 ISHDN Shutdown Supply Current VEN=0,TA=+25J (EUP7913A) VIN=(VOUT+1V) 70 f=1kHz, ILOAD=10mA Power Supply Ripple PSRR VIN=(VOUT+1V) f=10kHz, ILOAD=10mA 60 Rejection VIN=(VOUT+1V) f=100kHz, 45 ILOAD=10mA Output Noise Voltage f=10Hz~100kHz, VOUT=1.5V, 30 No Load (RMS) Turn-on Time (Note4) RLOAD=50,TA=+25J 100 VENL VENL (EN logic low) VIN=2.5V to 5.5V (EUP7913A) 0.4 VENH VENH (EN logic high) VIN=2.5V to 5.5V (EUP7913A) 1.5 VEN Input Bias Current VIN=5.5V, VEN=0 or 5.5V (EUP7913A) -1 1 RDIS Output Discharge Switch VEN=0,VIN=3.6V 500 Thermal Shutdown TSD 155 Temperature Thermal Shutdown TSD 15 Hysteresis Rdischarge VOUT Discharge Resistance VEN=0 (EUP7913A) 500 Note (3): Dropout is defined as VIN-VOUT when VOUT is 100mV below the value of VOUT for VIN=VOUT+0.5V Note (4): Time needed for VOUT to reach 90% of final value. DS7913/A Ver1.1 Dec. 2008 dB V s V V A C C 5 EUP7913/A Typical Characteristics (CIN=COUT=2.2F) DS7913/A Ver1.1 Dec. 2008 6 EUP7913/A Typical Characteristics (continued) Time (100s/div) Time (200s/div) Time (40s/div) Time (200s/div) DS7913/A Ver1.1 Dec. 2008 7 EUP7913/A Typical Characteristics (continued) Time (100s/div) Time (100s/div) DS7913/A Ver1.1 Dec. 2008 8 EUP7913/A Application Note Input Capacitor An input capacitance of 1F or higher is required between the EUP7913/A input pin IN and ground (the amount of the capacitance may be increased without limit). This capacitor must be located a distance of not more than 1cm from the input pin and returned to a clean analog ground. Any good quality ceramic, tantalum, or film capacitor may be used at the input. If a tantalum capacitor is used at the input, it must be guaranteed by the manufacturer to have a surge current rating sufficient for the application. There are no requirements for the ESR on the input capacitor, but tolerance and temperature coefficient must be considered when selecting the capacitor to ensure the capacitance will be 1F over the entire operating temperature range. Output Capacitor The EUP7913/A is designed specifically to work with very small ceramic output capacitors. A ceramic capacitor (temperature characteristics X7R or X5R) in 1F to 10F range with 5m to 500m ESR range is suitable in the EUP7913/A application circuit. The output capacitor must meet the requirement for minimum amount of capacitance to maintain good loop stability and phase margin. See the table below. Output Voltage 1.2~1.45 1.5~3.6 Output Capacitor Minimum Value 2.2uF 1uF No-Load Stability The EUP7913/A is stable without any external load. This is specially important for CMOS RAM keep-alive applications. On/Off Input Operation The EUP7913A is turned off by pulling the EN pin low, and turned on by pulling it high. If this pin is floating, the regulator will always be on .To assure proper operation, the signal source used to drive the VEN input must be able to swing above and below the specified turn-on/off voltage thresholds listed in the Electrical Characteristics. When EN is logic low, output is internally discharged to GND through a 500 resistor. DS7913/A Ver1.1 Dec. 2008 9 EUP7913/A Packaging Information SOT23-3 SYMBOLS A A1 D E1 E L b e MILLIMETERS MIN. 0.00 2.90 1.60 2.60 0.30 0.30 0.95 3.00 0.60 0.50 0.102 0.012 0.012 MAX. 1.30 0.15 MIN. 0.000 INCHES MAX. 0.052 0.006 0.114 0.063 0.118 0.024 0.020 0.037 DS7913/A Ver1.1 Dec. 2008 10 EUP7913/A SOT23-5 SYMBOLS A A1 D E1 E L b e MILLIMETERS MIN. 0.00 2.90 1.60 2.60 0.30 0.30 0.95 3.00 0.60 0.50 0.102 0.012 0.012 MAX. 1.30 0.15 MIN. 0.000 INCHES MAX. 0.052 0.006 0.114 0.063 0.118 0.024 0.020 0.037 DS7913/A Ver1.1 Dec. 2008 11 |
Price & Availability of EUP7913A
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