IRU1120CP

Data Sheet No. PD94402 IRU1120 2A LOW DROPOUT POSITIVE ADJUSTABLE REGULATOR PRELIMINARY DATA SHEET FEATURES Stable with ceramic capacitor Guaranteed < 1.3V Dropout at Full Load Current Fast Transient Response 2% Voltage Reference Initial Accuracy Output Current Limiting Built-In Thermal Shutdown DESCRIPTION The IRU1120 is an adjustable linear voltage regulator. It is packaged in a 5-pin ultra thin-pak surface mount package. The adjustable output voltage can be set from 1.25V and up using a simple resistor divider. The input power can be supplied by a single 5V supply. The regulator is capable of supplying 2 Amps of continuous current with an input voltage of 5V. The output is protected by both current limit and thermal shutdown circuits. APPLICATIONS High Efficiency Linear Regulator Hard Disk Drivers, CD-ROMs, DVDs ADSL and Cable Modems TYPICAL APPLICATION 2.5V @ 2A VADJ 5 VOUT 4 R2 1K R1 1K C3 4.7uF X5R IRU1120 Gnd 3 VIN 2 VCTRL 1 5V 3.3V C1 4.7uF X5R C2 4.7uF X5R Figure 1 - Typical application of IRU1120. PACKAGE ORDER INFORMATION TA (°C) 0 To 125 DEVICE IRU1120CP PACKAGE 5-Pin Ultra Thin-Pak TM (P) OUTPUT Adjustable Rev. 1.3 08/20/02 www.irf.com 1 IRU1120 ABSOLUTE MAXIMUM RATINGS Input Voltage (V IN) .................................................... Input Voltage (V CTRL) ................................................. Operating Junction Temperature Range ..................... Operating Ambient Temperature Range ..................... Storage Temperature Range ...................................... 10V 10V -40°C To 150°C -40°C To 125°C -65°C To 150°C PACKAGE INFORMATION 5-Pin Ultra Thin-Pak TM (P) FRONT VIEW 5 VADJ VOUT Gnd VIN VCTRL Tab is Gnd 4 3 2 1 uJA=308C/W for 1" Square Pad ELECTRICAL SPECIFICATIONS Unless otherwise specified, these specifications apply over CIN=CCTRL=COUT=4.7m F. Typical values refer to TJ=258C unless otherwise noted. IFL=2A. VADJ is connected to VOUT and VIN=VCTRL=5V unless otherwise noted. PARAMETER Output Voltage Line Regulation SYM V OUT RegLINE Load Regulation RegLOAD Dropout Voltage V DO1 Dropout Voltage V DO2 Dropout Voltage V DO3 Dropout Voltage V DO4 TEST CONDITION Io=10mA, TJ=258C Io=10mA, 08C< TJ