LT3033IUDC#PBF Analog Devices

LT3033 3A, 0.95V to 10V, Very Low Dropout Linear Regulator with Programmable Current Limit FEATURES DESCRIPTION n Single Supply V Range: 0.95V to 10V The LT 3033 is a very low dropout voltage (VLDO) linear IN n Dropout Voltage: 95mV Typical regulator that operates from a single input supply down to n Output Current: 3A 0.95V. The device supplies 3A output current with 95mV n Adjustable Output Voltage: 200mV to 9.7V typical dropout voltage. The LT3033 is ideal for low input n Single Capacitor Soft-Starts Reference and Lowers voltage to low output voltage applications, providing Output Noise comparable electrical efficiency to a switching regulator. n Stable with Low ESR, Ceramic Output Capacitors The LT3033 optimizes stability and transient response n 0.075% Typical Load Regulation from 1mA to 3A with low ESR ceramic output capacitors as small as 10F. n Quiescent Current: 1.9mA Typical Other features include programmable current limit, an n Quiescent Current in Shutdown: 22A Typical output current monitor and a power good flag to indicate n Power Good (PWRGD) Flag (Status Valid in Shutdown) output voltage regulation. In shutdown, quiescent cur- n Current Limit Protection with Foldback rent typically drops to 22A. Internal protection circuitry n Programmable Current Limit includes reverse-battery protection, current limiting with n Output Current Monitor: I /2650 OUT foldback, thermal limiting with hysteresis and reverse- n Thermal Limiting with Hysteresis current protection. n Reverse Battery, Reverse Output, and Reverse Current Protection The LT3033 is available as an adjustable device with an n 20-Lead 3mm 4mm QFN Package output voltage down to the 200mV reference. The device is available in a thermally enhanced, low profile 3mm 4mm 0.75mm QFN package. APPLICATIONS All registered trademarks and trademarks are the property of their respective owners. n High Efficiency Linear Regulators n Battery-Powered Systems n Logic Supplies n Post Regulator for Switching Supplies n Wireless Modems n FPGA Core Supplies Minimum Input Voltage vs TYPICAL APPLICATION Temperature 1.2 1.2V to 0.9V, 3A VLDO Regulator 1.1 I = 3A L V OUT 1.0 V IN IN OUT 0.9V 1.2V 0.9 3A 13.7k 100k 10nF 10F LT3033 1% 0.8 SHDN ADJ 0.7 10F 3.92k 0.6 1% PWRGD 0.5 500mV AT 0.4 IMON ILIM I = 3A OUT 0.3 442 GND REF/BYP 0.2 10nF 0.1 3033 TA01a 0 75 50 25 0 25 50 75 100 125 150 175 TEMPERATURE (C) 3033 TA01b Rev. A 1 Document Feedback For more information www.analog.com MINIMUM INPUT VOLTAGE (V)LT3033 ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Note 1) IN Pin Voltage .........................................................10V TOP VIEW OUT Pin Voltage ......................................................10V Input-to-Output Differential Voltage ........................10V 20 19 18 17 ADJ Pin Voltage ......................................................10V IN IN IN 1 16 IN REF/BYP Pin Voltage ....................................... 1V, 0.3V 21 22 IN 2 15 IN SHDN Pin Voltage ...................................................10V OUT OUT OUT 3 14 OUT PWRGD Pin Voltage ...................................... 10V, 0.3V 23 24 OUT 4 13 OUT ILIM Pin Voltage ...................................................... 7V SHDN GND 5 12 IMON Pin Voltage ....................................................10V GND 6 11 PWRGD Output Short-Circuit Duration ..........................Indefinite 7 8 9 10 Operating Junction Temperature (Notes 2, 3) E-/I-grades .........................................40C to 125C Storage Temperature Range UDC PACKAGE 20-LEAD (3mm 4mm) QFN, IN/OUT EXPOSED PADS QFN Package ......................................65C to 150C T = 125C, = 38C/W, = 3.4C/W JMAX JA JC ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LT3033EUDC PBF LT3033EUDC TRPBF LGVQ 20-Lead (3mm 4mm) Plastic QFN 40C to 125C LT3033IUDC PBF LT3033IUDC TRPBF LGVQ 20-Lead (3mm 4mm) Plastic QFN 40C to 125C Contact the factory for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. Tape and reel specifications. Some packages are available in 500 unit reels through designated sales channels with TRMPBF suffix. Rev. A 2 For more information www.analog.com ILIM OUT IMON OUT REF/BYP OUT OUT ADJ