EUP7910A

EUP7910A 3.3V 600mA Low-Dropout Regulator DESCRIPTION The EUP7910A positive 3.3V voltage regulator features the ability to source 600mA of output current with a dropout voltage of 0.3V. A low quiescent current is provided. The typical quiescent current is 170µA. Other features include ultra low dropout, high output accuracy, high PSRR, thermal shutdown and over current protection. FEATURES Dropout voltage 0.3V @ Io=600mA Output Current in Excess of 600mA Output Voltage Accuracy ± 2% Quiescent Current, Typically 170µA Stable with Ceramic Capacitor Short Circuit Current Limit Over Temperature Protection Available in SOT-89 Packages RoHS Compliant and 100% Lead (Pb)-Free APPLICATIONS LDO Linear Regulator for Low-Voltage Digital IC PC Add-In Cards High Efficiency Linear Power Supplies Post Regulator Typical Application Circuit Figure 1. DS7910A Ver1.0 May 2008 1 EUP7910A Pin Configurations Package Type Pin Configurations SOT-89 Pin Description PIN VOUT GND VIN SOT-89 1 2 3 Output voltage of the LDO Ground: TAB is connected to ground Input Voltage of the LDO DESCRIPTION DS7910A Ver1.0 May 2008 2 EUP7910A Ordering Information Order Number Package Type Marking Operating Temperature Range EUP7910A-33CIR1 SOT-89 xxxxx 7910A1H -40 °C to 85°C EUP7910A-□ □ □ □□ □ Lead Free Code 1: Lead Free 0: Lead Packing R: Tape & Reel Operating temperature range I: Industry Standard Package Type: C: SOT89 Output Voltage DS7910A Ver1.0 May 2008 3 EUP7910A Absolute Maximum Ratings Supply Voltage VIN ---------------------------------------------------------------------6.5V Package Thermal Resistance SOT-89, θJA -------------------------------------------------------------------------175°C /W Power Dissipation, PD@TA=25°C SOT-89 ------------------------------------------------------------------------------ 0.55W Junction Temperature ------------------------------------------------------------------- 150°C Storage Temperature ------------------------------------------------------ -65°C to +150°C Reflow Temperature (soldering, 10sec) ------------------------------------------------ 260°C ESD Rating Human Body Model ---------------------------------------------------------------------- 2kV Operating Ratings Supply Voltage VIN ------------------------------------------------------------------ 3.6 to 6V Junction Temperature ------------------------------------------------------ -40°C to +85°C Electrical Characteristics Conditions: VIN =5V, CIN = COUT= 4.7uF (Ceramic),TA=25℃,Unless otherwise specified. IL=10mA, COUT= 4.7µF. Symbol ∆VOUT ∆VLINE ∆VLOAD IQ PSRR VDROP ILIMIT ISC TSD ∆TSD Parameter Output Voltage Accuracy Line Regulation Load Regulation Quiescent Current Power Supply Ripple Rejection Dropout Voltage Current Limit Short Circuit Current Thermal Shutdown Temperature Thermal Shutdown Hysteresis Conditions 10mA ≤ IOUT ≤ 300mA IOUT=10mA, TA=-40°C to 85°C VIN=4V to 6V, IOUT=10mA 10mA ≤ IOUT ≤ 600mA IOUT= 10mA IOUT= 600mA f=120Hz, IOUT=10mA IOUT=600mA Min 3.234 3.201 EUP7910A Typ Max. 3.3 4 4 170 420 60 300 1 1.2 160 20 450 3.366 3.399 10 15 250 550 Unit V V mV mV uA uA dB mV A A °C °C DS7910A Ver1.0 May 2008 4 EUP7910A Typical Operating Characteristics Line Transient Response CIN=1uF, COUT=10uF, IL=100mA Load Transient Response CIN=1uF, COUT=10uF CH4:VOUT CH4:VOUT (offset= 3.3V) CH3:VIN (offset= 5V) CH1:IL(100mA/div) Figure 2. Figure 3. Short Circuit Current CIN=1uF, COUT=10uF, VIN=6V, VOUT=GND Output Current Power Start-up CH2:VOUT CH4:VOUT CH1:IL(100mA/div) Figure 4. Figure 5. Figure 6. Figure 7. DS7910A Ver1.0 May 2008 5 EUP7910A Typical Operating Characteristics (continued) Figure 8. Figure 9. Figure 10. Figure 11. VIN=5V CIN=2.2uF COUT=2.2uF IL=10mA Figure 12. DS7910A Ver1.0 May 2008 Figure 13. 6 EUP7910A Application Note External Capacitors Like any low-dropout regulator, the EUP7910A requires external capacitors for regulator stability. These capacitors must be correctly selected for good performance. Input Capacitor An input capacitance of 1µF is required between the EUP7910A input pin 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 1µF over the entire operating temperature range. Output Capacitor The EUP7910A is designed specifically to work with very small ceramic output capacitors. A ceramic capacitor (temperature characteristics X7R, X5R, Z5U, or Y5V) in 2.2 to 10µF range with 5mΩ to 200mΩ ESR range is suitable in the EUP7910A application circuit. The output capacitor must meet the requirement for minimum amount of capacitance and also have an ESR (Equivalent Series Resistance) value which is within a stable range (5mΩ to 200mΩ) No-Load Stability The EUP7910A will remain stable and in regulation with no external load. This is specially important in CMOS RAM keep-alive applications. DS7910A Ver1.0 May 2008 7 EUP7910A Packaging Information SOT-89 SYMBOLS A L B1 B C D D1 H E e MILLIMETERS MIN. 1.40 0.89 0.36 0.44 0.35 4.40 1.35 3.94 2.29 1.50 MAX. 1.60 1.20 0.48 0.56 0.44 4.60 1.83 4.25 2.60 INCHES MIN. 0.055 0.035 0.014 0.017 0.014 0.173 0.053 0.155 0.090 0.059 MAX. 0.063 0.047 0.019 0.022 0.017 0.181 0.072 0.167 0.102 DS7910A Ver1.0 May 2008 8