OM7764AS

PD - 94749 Ultra Low Dropout, 3.0A Adjustable Positive Linear Regulator Thru-Hole (MO-078AA) Product Summary Part Number OM7764ASC O M 7 764 AS C 5962 - 0323801MYA Output Voltage 1.21V to 20V Current 3.0A Dropout 0.4V 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. MO-078AA 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 Output Currrent Input Voltage Power Dissipation @ Tc = 25°C Thermal Resistance, Junction to Case Operating Junction Temperature Range Storage Temperature Range Lead Temperature Soldering (10second maximum) Symbol IO VIN PD RθJC TJ TSTG TL Value 3.0 +20 20 5.0 -55 to +125 -65 to +150 300 Units A V W °C/W °C www.irf.com 1 08/06/03 OM7764ASC Electrical Characteristics @TA = 25°C (Unless Otherwise Specified) Parameter Minimum Input voltage Line Regulation Load Regulation Adjust Pin Voltage ILOAD = 3.0A Q ∆VIN = 2.21V to 20V, ILOAD = 1.0mA QR VIN = 2.7V, ILOAD =1.0mA to 3.0A VIN = 2.7V, ILOAD =1.0mA to 3.0A QR VIN = 2.21V, ILOAD =1.0mA 2.7V < VIN < 20V, 1.0mA < ILOAD < 3.0A Q ILOAD = 1.0mA ILOAD = 1.0mA Q ILOAD = 100mA ILOAD = 100mA Q Dropout Voltage ILOAD = 500mA ILOAD = 500mA Q ILOAD = 1.5mA ILOAD = 1.5mA Q ILOAD = 3.0A ILOAD = 3.0A Q ILOAD = 0mA Q ILOAD = 1.0mA Q Ground Pin Current ILOAD = 100mA Q VIN = VOUT (Nominal)+1 ILOAD = 500mA Q ILOAD = 1.5A Q ILOAD = 3.0A Q Ripple Rejection Current Limit Input Reverse Leakage Current Reverse Output Current VOUT = 1.21V, VIN < 1.21V Q 300 600 µA VIN - VOUT = 1.5V(Average), VRIPPLE = 0.5 VP-P fRIPPLE = 120Hz, ILOAD = 1.5A, TJ = +25°C VIN = 2.7V, ∆VOUT = -0.1V Q VIN = -20V, VOUT = 0V Q 3.1 1.0 A mA Test Conditions Min. 1.192 1.168 55 Typ. 2.3 2.0 5.0 1.210 1.210 0.02 0.07 0.14 0.25 0.4 1.0 1.1 3.5 11 40 120 65 Max. 2.7 10 10 50 1.228 1.246 0.05 0.10 0.13 0.18 0.20 0.27 0.33 0.40 0.54 0.66 1.5 1.6 5.0 18 75 200 - Units V mV V mA dB 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 2: Adjust Pin Voltage Vs Temperature Fig 3: Quiescent Current Vs Input Voltage Fig 4: Ground Pin Current Vs Input Voltage www.irf.com 3 OM7764ASC Fig 5: Current Limit Vs Temperature VIN IN OM7764A OUT R2 ADJ 0.1uF R1 VOUT SHDN 0.1uF 100uF GND 220uF 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 Pin # 1 2 3 12345 Pin Description SHUTDOWN INPUT GROUND OUTPUT ADJUST 4 5 Part Numbering Nomenclature OM Omnirel 7764A Device S S=Isolated C Package X 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