Preliminary EUP7522 Dual, 600mA LDO Regulator DESCRIPTION FEATURES The EUP7522 is an efficient, precise dual-channel CMOS LDO regulator with very-low dropout voltage and low ground current. Both regulator outputs are capable of sourcing 600mA of output current. z Low Quiescent Current (Typically 130μA) z z z z z z z z Guaranteed 600mA Output Current Low Dropout Voltage:600mV at 600mA Wide Operating Voltage Ranges : 2.5V to 5.5V Ultra-Fast Transient Response Tight Load and Line Regulation Current Limiting Protection Thermal Shutdown Protection Only low-ESR Ceramic Capacitors Required for Stability Available in SOP-8 Package RoHS Compliant and 100% Lead (Pb)-Free The EUP7522’s performance is optimized for CD/DVD -ROM, CD/RW or wireless communication supply applications, The EUP7522 regulators are stable with output capacitors as low as 2.2 μF. Key features include current limit, thermal shutdown, fast transient response, high output accuracy, and high ripple rejection ratio. The EUP7522 regulator is available in a fixed 3.3V/2.5V output voltage configuration. z z APPLICATIONS z z z z Typical Application Circuit Figure 1. DS7522 Ver 0.5 March. 2006 1 CD/DVD-ROM, CD/RW Wireless LAN Card/Keyboard/Mouse Battery-Powered Equipment XDSL Router Preliminary Pin Configurations Part Number Pin Configurations EUP7522 SOP-8 Pin Description PIN PIN NAME 1 VOUT1 2,3 VIN 4 VOUT2 5,6,7,8 GND DESCRIPTION Regulator A Output Power Input Regulator B Output Ground Block Diagram Figure 2. DS7522 Ver 0.5 March. 2006 2 EUP7522 Preliminary EUP7522 Ordering Information Order Number Package Type EUP7522-3.3/2.5DIR1 SOP-8 EUP7522-3.3/2.5DIR0 SOP-8 Marking xxxx EUP7522 I xxxx EUP7522 I * For other output voltage options, contact EUT marketing. EUP7522 □□/□□ □ □ □ □ Lead Free Code 1: Lead Free 0: Lead Packing R: Tape & Reel Operating temperature range I: Industry Standard Package Type D: SOP Output Voltage Option DS7522 Ver 0.5 March. 2006 3 Operating Temperature range -40 °C to 85°C -40 °C to 85°C EUP7522 Preliminary Absolute Maximum Ratings ▓ ▓ ▓ ▓ ▓ ▓ Supply Input Voltage --------------------------------------------------------------------------------------- 6V Package Thermal Resistance SOP-8, θJC -------------------------------------------------------------------------------------------------- 15.7°C/W Lead Temperature (Soldering,10 sec .) -------------------------------------------------------------------- 260°C Junction Temperature ---------------------------------------------------------------------------------------- 150°C Storage Temperature Rang, Tstg -------------------------------------------------------------------------- -65°C to 150°C ESD Susceptibility HBM ---------------------------------------------------------------------------------------------------------- 2kV MM ----------------------------------------------------------------------------------------------------------- 200V Recommended Operating Conditions ▓ ▓ Supply Input Voltage -------------------------------------------------------------------------------------- 2.5V to 5.5V Junction Temperature ------------------------------------------------------------------------------------- -40°C to 125°C Electrical Characteristics Unless otherwise noted these specifications apply over full temperature, CIN=2.2µF, COUT1=2.2µF , COUT2=2.2µF, TJ=0 to 125°C. Typical values refer to TJ=25°C. Symbol VIN OTS TC IQ Parameter Conditions Input voltage Over Temperature Shutdown Over Temperature Shutdown Hysteresis Output Voltage Temperature Coefficient Quiescent Current Regulator 1 VOUT Output voltage EUP7522 Min Typ Max. 2.5 Hysteresis 5.5 °C 20 °C 40 ppm/°C 360 IOUT1=0mA, IOUT2=0mA 130 200 3.3 VOUT+2% ILIMIT Circuit Current Limit VIN=VOUT+ 1V IOUT Load Current VIN=VOUT+ 1V VOUT-2% V 150 IOUT1=300mA, IOUT2=300mA VIN=5V Unit 900 µA V mA 600 mA REGLINE Line Regulation VOUT+ 1V<Vcc <5.5V, IOUT=1mA 1.5 4 mV REGLOAD Load Regulation VIN=VOUT+ 1V, 0mA< IOUT< IMAX 20 40 mV PSRR Ripple Rejection F ≤ 1kHz, 1Vpp at IOUT=50mA 62 dB VDROP Dropout Voltage (Note 1) IOUT=600mA 600 mV COUT Output Capacitor 2.2 µF ESR DS7522 Ver 0.5 March. 2006 0.01 4 0.1 1 Ohm EUP7522 Preliminary Electrical Characteristics( Cont.) Unless otherwise noted these specifications apply over full temperature, CIN=2.2µF, COUT1=2.2µF , COUT2=2.2µF, TJ=0 to 125°C. Typical values refer to TJ=25°C. Symbol Parameter Conditions EUA7522 Min Typ Max. Unit Regulator 2 VOUT Output voltage VIN=5V ILIMIT Circuit Current Limit VIN=VOUT+ 1V IOUT Load Current VIN=VOUT+ 1V VOUT-2% 2.5 VOUT+2% 900 V mA 600 mA REGLINE Line Regulation VOUT+ 1V<Vcc <3.5V, IOUT=1mA 1.5 4 mV REGLOAD Load Regulation VIN=VOUT+ 1V, 0mA< IOUT< IMAX 20 40 mV PSRR Ripple Rejection F ≤ 1kHz, 1Vpp at IOUT=50mA 62 dB VDROP Dropout Voltage (Note 1) IOUT=600mA 600 mV COUT Output Capacitor 2.2 µF ESR 0.01 0.1 1 Note 1: dropout voltage definition : VIN-VOUT when VOUT is 2% below the value of VOUT for VIN=VOUT+ 1V DS7522 Ver 0.5 March. 2006 5 Ohm Preliminary Typical Operating Characteristics DS7522 Ver 0.5 March. 2006 6 EUP7522 Preliminary DS7522 Ver 0.5 March. 2006 7 EUP7522 EUP7522 Preliminary Power Dissipation and Junction Temperature Application Information Specified regulator operation is assured to a junction temperature of 125°C; the maximum junction temperature should be restricted to 125°C under normal operating conditions. This restriction limits the power dissipation the regulator can handle in any given application. To ensure the junction temperature is within acceptable limits, calculate the maximum allowable dissipation, PD(max), and the actual dissipation, PD, which must be less than or equal to PD(max) The maximum-power-dissipation limit is determined using the following equation: Input Capacitor A minimum input capacitance of 2.2µF is required between the EUP7522 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. T max − T A = J D(max) R P No-Load Stability θJA The EUP7522 will remain stable and in regulation with no external load. This is specially important in CMOS RAM keep-alive applications. Where: TJMAX is the maximum allowable junction temperature. RθJA is the thermal resistance junction-to-ambient for the package TA is the ambient temperature. Output Capacitance The EUP7522 is specifically designed to employ ceramic output capacitors as low as 2.2µF. Ceramic capacitors below 10µF offer significant cost and space savings, along with high frequency noise filtering. Higher values and other types and of capacitor may be used, but their equivalent series resistance (ESR) should be maintained below 0.5Ω. Ceramic capacitor of the value required by the EUP7522 are available in the following dielectric types: Z5U, Y5V, X5R, and X7R. The Z5U and Y5V types exhibit a 50% or more drop in capacitance value as their temperature increase from 25°C, an important consideration. The X5R generally maintain their capacitance value within ± 20%. The X7R type are desirable for their tighter tolerance of 10% over temperature. DS7522 Ver 0.5 March. 2006 The regulator dissipation is calculated using: PD=(VI-VO) × IO Power dissipation resulting from quiescent current is negligible. Excessive power dissipation triggers the thermal protection circuit. 8 EUP7522 Preliminary Packaging Information X Y Z Standard Solder Map Symbols A B C D E H F L1 L2 M N Dimension in Millimeters Min. Max. 4.80 5.00 5.80 6.20 3.80 4.00 1.194 1.346 1.45 1.55 0.00 0.10 0.33 0.51 0.19 0.25 0.40 1.27 0° 8° 40° 50° Dimension in Inches Min. Max. 0.189 0.197 0.228 0.244 0.150 0.157 0.047 0.053 0.057 0.061 0.000 0.004 0.013 0.020 0.007 0.010 0.016 0.050 0° 8° 40° 50° 8 – Lead SOP Plastic Package DS7522 Ver 0.5 March. 2006 9