PD - 97294 OM7671ST 3.3V, 2.6A Low Dropout Positive Voltage Regulator Product Summary Part Number Output Voltage Output Current Package OM7671ST 3.3V 2.6A TO-257AA TO-257AA Description Features This series of +3.3V voltage regulators are high current, high accuracy, low dropout regulators and are well suited for systems where low dropout voltages are critical. These devices feature protection against overtemperature, overcurrent, reverse polarity conditions and voltage spikes. The TO-257AA (Isolated Tab) hermetic package meets the demand for military/ defense environments. n n n n n n Low Dropout Voltage and Ground Currents High Current Capability Built-in Thermal Overload Protection Short Circuit Current Limiting Output Voltage Tolerance Guaranteed to ± 1% Hermetic TO-257AA (Isolated Tab) Package Ensures High Reliability n Output Current 2.6A n This part is also available in SMD-1 Package as OM7671NM TO-204AA Package as OM7671NK 3-Pin Surface Mount (SMD-3) Package as OM7671SM Absolute Maximum Ratings @ TC =25°C Parameter Output Current Symbol Value Units IO 2.6 A Input Voltage VIN 30 V Power Dissipation PD 26 W RθJC 4.2 °C/W TJ -55 to +125 TSTG -65 to +150 TL 300 Thermal Resistance, Junction to Case Operating Junction Temperature Range Storage Temperature Range Lead Temperature (Soldering 10 seconds maximum) www.irf.com °C 1 07/10/07 OM7671ST Electrical Characteristics -55°C dTA d 125°C (Unless Otherwise Specified) Parameter Symbol Output Voltage VOUT UVOUT / UVIN UVOUT / UIOUT c Load Regulation c Line Regulation Dropout Voltage VDROP Thermal Regulation - UVIN / UVOUT Ripple Rejection Test Conditions VIN = 5.0V, IOUT = 10mA, TA = 25°C 4.75V ≤ VIN ≤ 18V, 10mA ≤ IOUT ≤ ILMIN 4.5V d VIN d18V, IOUT = 0 A e e Min. Max. 3.267 3.333 3.235 3.365 - 12 VIN = 5.0V, 0A dIOUTdILMIN, TA = 25°C - 15 VIN = 5.0V, 0A dIOUTdILMIN - 25 UVREF = 1% e e Units V mV - 1.5 V - 0.04 %/W 60 - dB VIN = 18V - 10 mA VIN = 8.3V 2.6 - 0.050 - -55°C ≤ TJ ≤ +125°C - 1.55 TA = +125°C, t = 1000hrs - 1.0 IOUT = ILMIN, Pulse Width = 30ms, TA = +25°C f = 120Hz, CAdj = 25PF, COUT = 25PF (tantalum), IOUT = ILMIN e VIN = 6.3V Quiescent Current IQ Current Limit IL Temperature Stability Long Term Stability d d UVOUT / UT UVOUT / UT e e VIN =28V e A % Notes 1. Line and load regulation are measured at a constant junction temperature using a low duty cycle pulse technique. Although power dissipation is internally limited, regulation is guaranteed up to the maximum power dissipation of 26W. Power dissipation is determined by the input/output differential voltage and output current. Guaranteed maximum power dissipation will not be available over the full input/output voltage range. 2. Guaranteed by design, characterization or correlation to other tested parameters. 3. Specifications apply over the operating temperature range. 2 www.irf.com OM7671ST Load Regulation Short Circuit Current Fig 2: Typical Short Circuit Current Vs Input/Output Differential Fig 1: Typical Minimum Output Differential Vs Output Current Dropout Voltage Fig 3: Typical Output Voltage Deviation Vs Temperature www.irf.com 3 OM7671ST Case Outline and Dimensions - TO-257AA 3Pin (T-3) PIN ASSIGNMENTS Pin 1 - Ground Pin 2 - Vout Pin 3 - Vin Part Numbering Nomenclature OM 7671 S T Package Code Device Number T = TO-257AA Isolated / Non-Isolated S = Isolated IR WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105 IR LEOMINSTER : 205 Crawford St., Leominster, Massachusetts 01453, USA Tel: (978) 534-5776 Data and specifications subject to change without notice. 07/2007 4 www.irf.com