LT3012B 250mA, 4V to 80V Low Dropout Micropower Linear Regulator FEATURES DESCRIPTIO Wide Input Voltage Range: 4V to 80V The LT 3012B is a high voltage, micropower low dropout Low Quiescent Current: 40A linear regulator. The device is capable of supplying 250mA Low Dropout Voltage: 400mV of output current with a dropout voltage of 400mV. De- Output Current: 250mA signed for use in battery-powered or high voltage sys- No Protection Diodes Needed tems, the low quiescent current (40A operating) makes Adjustable Output from 1.24V to 60V the LT3012B an ideal choice. Quiescent current is also well Stable with 3.3F Output Capacitor controlled in dropout. Stable with Aluminum, Tantalum or Ceramic Other features of the LT3012B include the ability to oper- Capacitors ate with very small output capacitors. The regulators are Reverse-Battery Protection stable with only 3.3F on the output while most older No Reverse Current Flow from Output to Input devices require between 10F and 100F for stability. Thermal Limiting Small ceramic capacitors can be used without any need for Thermally Enhanced 16-Lead TSSOP and 12-Pin series resistance (ESR) as is common with other regula- (4mm 3mm) DFN Packages tors. Internal protection circuitry includes reverse-battery U protection, current limiting, thermal limiting and reverse APPLICATIO S current protection. Low Current High Voltage Regulators The device is available with an adjustable output with a Regulator for Battery-Powered Systems 1.24V reference voltage. The LT3012B regulator is avail- Telecom Applications able in the 16-lead TSSOP and 12 pin low profile (0.75mm) Automotive Applications (4mm 3mm) DFN packages with an exposed pad for enhanced thermal handling capability. , LTC and LT are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. TYPICAL APPLICATIO Dropout Voltage 400 350 5V Supply 300 V OUT IN OUT 5V 250 250mA V IN LT3012B 750k 5.4V TO 3.3F 1F 200 80V ADJ GND 150 249k 100 3012B TA01 50 0 0 50 100 150 200 250 OUTPUT CURRENT (mA) 3012B TA02 3012bf 1 DROPOUT VOLTAGE (mV) U ULT3012B ABSOLUTE AXI U RATI GS (Note 1) IN Pin Voltage ................................................... 80V Storage Temperature Range OUT Pin Voltage ............................................... 60V TSSOP Package ........................... 65C to 150C IN to OUT Differential Voltage ........................... 80V DFN Package ............................... 65C to 125C ADJ Pin Voltage .................................................. 7V Operating Junction Temperature Range Output Short-Circuit Duration ..................... Indefinite (Notes 3, 9, 10) ........................... 40C to 125C Lead Temperature (Soldering, 10 sec)............ 300C UU W PACKAGE/ORDER I FOR ATIO TOP VIEW TOP VIEW 1 GND 16 GND NC 1 12 NC 2 NC 15 NC OUT 2 11 IN 3 OUT 14 IN OUT 3 10 IN 4 OUT 13 IN 13 17 ADJ 4 9 NC 5 ADJ 12 NC GND 5 8 NC 6 GND 11 NC NC 6 7 NC 7 NC 10 NC 8 GND 9 GND DE PACKAGE 12-LEAD (4mm 3mm) PLASTIC DFN FE PACKAGE 16-LEAD PLASTIC TSSOP T = 125C, = 40C/ W, = 16C/ W JMAX JA JC T = 125C, = 40C/ W, = 16C/ W EXPOSED PAD (PIN 13) IS GND JMAX JA JC MUST BE SOLDERED TO PCB EXPOSED PAD (PIN 17) IS GND MUST BE SOLDERED TO PCB ORDER PART NUMBER DE PART MARKING ORDER PART NUMBER FE PART MARKING LT3012BEDE 3012B LT3012BEFE 3012BEFE Order Options Tape and Reel: Add TR Lead Free: Add PBF Lead Free Tape and Reel: Add TRPBF Lead Free Part Marking: