PD - 94749 Ultra Low Dropout, 3.0A Adjustable Positive Linear Regulator Thru-Hole (MO-078AA) O M 7 764 AS C 5962 - 0323801MYA Product Summary Part Number Output Voltage Current Dropout OM7764ASC 1.21V to 20V 3.0A 0.4V MO-078AA Description The OM7764ASC is a 3.0A, ultra low dropout, adjustable linear regulator specifically designed for low voltage, high current applications. Housed in a hermetic package, the dropout of these devices is 400mV at full load. All protective features are designed into the circuit including thermal shutdown, current limiting and safe area control. These units are ideally suited for military/defense, commercial aircraft, industrial control and other harsh environments where a hermetically sealed package is required. Features: ■ ■ ■ ■ Dropout Voltage of 400mV at Full Load Wide Input Range: 2.7V to 20V Low Noise: 40mVRMS ( 10Hz to 10KHz ) Fast Transient Response ■ No Protection Diodes needed ■ Hermetic MO-078AA Package ensures High Reliability Absolute Maximum Ratings Parameter Value Units IO 3.0 A Input Voltage VIN +20 V Power Dissipation @ Tc = 25°C PD 20 W RθJC 5.0 °C/W Output Currrent Thermal Resistance, Junction to Case Operating Junction Temperature Range Storage Temperature Range Lead Temperature Soldering (10second maximum) www.irf.com Symbol TJ -55 to +125 TSTG -65 to +150 TL 300 °C 1 08/06/03 OM7764ASC Electrical Characteristics @TA = 25°C (Unless Otherwise Specified) Parameter Test Conditions Min. Typ. Max. Units V Minimum Input voltage ILOAD = 3.0A Q - 2.3 2.7 Line Regulation ∆VIN = 2.21V to 20V, ILOAD = 1.0mA QR - 2.0 10 Load Regulation VIN = 2.7V, ILOAD =1.0mA to 3.0A - 5.0 10 VIN = 2.7V, ILOAD =1.0mA to 3.0A QR - - 50 VIN = 2.21V, ILOAD =1.0mA 1.192 1.210 1.228 2.7V < VIN < 20V, 1.0mA < ILOAD < 3.0A Q 1.168 1.210 1.246 ILOAD = 1.0mA - 0.02 0.05 ILOAD = 1.0mA Q - - 0.10 ILOAD = 100mA - 0.07 0.13 0.18 Adjust Pin Voltage Dropout Voltage ILOAD = 100mA Q - - ILOAD = 500mA - 0.14 0.20 ILOAD = 500mA Q - - 0.27 ILOAD = 1.5mA - 0.25 0.33 ILOAD = 1.5mA Q - - 0.40 ILOAD = 3.0A - 0.4 0.54 ILOAD = 3.0A Q - - 0.66 ILOAD = 0mA Q - 1.0 1.5 ILOAD = 1.0mA Q - 1.1 1.6 ILOAD = 100mA Q - 3.5 5.0 VIN = VOUT (Nominal)+1 ILOAD = 500mA Q ILOAD = 1.5A Q - 11 18 Ground Pin Current ILOAD = 3.0A Q Ripple Rejection VIN - VOUT = 1.5V(Average), VRIPPLE = 0.5 VP-P - 40 75 55 120 65 200 - mV V mA dB fRIPPLE = 120Hz, ILOAD = 1.5A, TJ = +25°C Current Limit VIN = 2.7V, ∆VOUT = -0.1V Q Input Reverse Leakage VIN = -20V, VOUT = 0V Q 3.1 - - A - - 1.0 mA - 300 600 µA Current Reverse Output Current VOUT = 1.21V, VIN < 1.21V Q Footnotes Q- Denotes specifications which apply over the full operating temperature range. R- The OM7764ASC is tested and specified for these conditions with the ADJ pin connected to the OUT pin. 2 www.irf.com OM7764ASC Fig 1: Dropout Voltage Vs Temperature Fig 3: Quiescent Current Vs Input Voltage www.irf.com Fig 2: Adjust Pin Voltage Vs Temperature Fig 4: Ground Pin Current Vs Input Voltage 3 OM7764ASC Fig 5: Current Limit Vs Temperature OM7764A VIN IN R2 SHDN 0.1uF 100uF GND VOUT OUT ADJ 0.1uF 220uF R1 VOUT = 1.21V(1 + (R2/R1)) + IADJ(R2) IADJ = 3.0uA @ 25°C Fig 6: Typical Application Layout Consideration It is recommended that output capacitors be located as close as possible to the VOUT terminal of the device to prevent any high frequency oscillation that may result due to excessive stray inductance. Specfications for capacitors: 220µF (+25V) Tantalum, 100µF (+25V)Tantalum, 0.1µF (+50V) Ceramic 4 www.irf.com OM7764ASC Case Outline and Dimensions — MO-078AA Pin Assignment 12345 Pin # Pin Description 1 SHUTDOWN 2 INPUT 3 GROUND 4 OUTPUT 5 ADJUST Part Numbering Nomenclature OM 7764A S C X Omnirel Device S=Isolated Package Screening WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, Tel: (310) 252-7105 IR LEOMINSTER: 205 Crawford St., Leominster, Massachusetts 01453, Tel: (978) 534-5776 Data and specifications subject to change without notice. 08/03 www.irf.com 5