LT3029 Dual 500mA/500mA Low Dropout, Low Noise, Micropower Linear Regulator Fea T Descrip T n Output Current: 500mA per Channel The LT 3029 is a dual, micropower, low noise, low drop- n Low Dropout Voltage: 300mV out linear regulator. The device operates either with a n Low Noise: 20V (10Hz to 100kHz) common input supply or independent input supplies for RMS n Low Quiescent Current: 55A per Channel each channel, over an input voltage range of 1.8V to 20V. n Wide Input Voltage Range: 1.8V to 20V (Common or Each output supplies up to 500mA of output current with Independent Input Supply) a typical dropout voltage of 300mV. Quiescent current is n Adjustable Output: 1.215V Reference Voltage well controlled in dropout. With an external 10nF bypass n Very Low Quiescent Current in Shutdown: <1A per capacitor, output noise is only 20V over a 10Hz to RMS Channel 100kHz bandwidth. Designed for use in battery-powered n Stable with 3.3F Minimum Output Capacitor systems, the low 55A quiescent current per channel n Stable with Ceramic, Tantalum or Aluminum makes it an ideal choice. In shutdown, quiescent current Electrolytic Capacitors drops to less than 1A. Shutdown control is independent n Reverse-Battery and Reverse Output-to-Input for each channel, allowing for flexible power management. Protection The LT3029 optimizes stability and transient response with n Current Limit with Foldback and Thermal Shutdown low ESR ceramic output capacitors, requiring a minimum n Tracking/Sequencing Capability: Compatible with of only 3.3F. The regulator does not require the addition LTC292X Power Supply Tracking ICs of ESR, as is common with other regulators. n Thermally Enhanced 16-Lead MSOP and 16-Lead Internal circuitry provides reverse-battery protection, (4mm 3mm) DFN Packages reverse-current protection, current limiting with foldback and thermal shutdown. The device is available as an a T adjustable output voltage device with a 1.215V reference n voltage. The LT3029 is offered in the thermally enhanced General Purpose Linear Regulator n 16-lead MSOP and 16-lead, low profile (4mm 3mm Battery-Powered Systems n 0.75mm) DFN packages. Microprocessor Core/Logic Supplies n L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and Post Regulator for Switching Supplies ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the property n Tracking/Sequencing Power Supplies of their respective owners. Dropout Voltage vs Load Current Typical a T 400 T = 25C 2.5V to 1.5V/1.8V Application J IN 350 V V IN OUT1 IN1 OUT1 2.5V 1.8V 300 LT3029 10nF 500mA 3.3F 113k 3.3F 1% IN2 BYP1 250 ADJ1 200 237k SHDN1 1% 150 V OUT2 SHDN2 OUT2 1.5V 100 500mA 10nF 54.9k 3.3F 1% BYP2 50 ADJ2 0 GND 237k 0 50 100 150 200 250 300 350 400 450 500 1% OUTPUT CURRENT (mA) 3029 TA01 3029 TA01b 3029fb 1 For more information www.linear.com/LT3029 DROPOUT VOLTAGE (mV) ion pplica ions pplica ion uresLT3029 a Te Maxi Mu M r a T (Note 1) IN1, IN2 Pin Voltage ................................................22V Operating Junction Temperature (Notes 2, 12) OUT1, OUT2 Pin Voltage .........................................22V LT3029E ............................................. 40C to 125C Input-to-Output Differential Voltage ........................22V LT3029I .............................................. 40C to 125C ADJ1, ADJ2 Pin Voltage ............................................9V LT3029H ............................................ 40C to 150C BYP1, BYP2 Pin Voltage ........................................0.6V LT3029MP.......................................... 55C to 125C SHDN1 , SHDN2 Pin Voltage ..................................22V Storage Temperature Range ................... 65C to 150C Output Short-Circuit Duration .......................... Indefinite Lead Temperature (Soldering, 10 sec) (MSOP Only) ..................................................... 300C p in c F T TOP VIEW TOP VIEW BYP1 1 16 ADJ1 NC 2 15 SHDN1 BYP1 1 16 ADJ1 2 SHDN1 NC 15 OUT1 3 14 IN1 OUT1 3 14 IN1 OUT1 4 13 17 IN1 OUT1 4 17 13 IN1 GND GND 5 GND 12 IN2 GND 5 12 IN2 6 IN2 OUT2 11 OUT2 6 11 IN2 OUT2 7 10 SHDN2 BYP2 8 9 ADJ2 OUT2 7 10 SHDN2 BYP2 8 9 ADJ2 MSE PACKAGE 16-LEAD PLASTIC MSOP DE PACKAGE T = 125C (LT3029E/LT3029I/LT3029MP), = 37C/W, : 5C/W TO 10C/W JMAX JA JC 16-LEAD (4mm 3mm) PLASTIC DFN T = 150C (LT3029H), = 37C/W, : 5C/W TO 10C/W JMAX JA JC T = 125C (LT3029E/LT3029I), = 38C/W , = 4.3C/W JMAX JA JC EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB GND T = 150C (LT3029H), = 38C/W , = 4.3C/W JMAX JA JC EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB GND Der in F Ma T LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LT3029EDE PBF LT3029EDE TRPBF 3029 40C to 125C 16-Lead (4mm 3mm) Plastic DFN LT3029IDE PBF LT3029IDE TRPBF 3029 16-Lead (4mm 3mm) Plastic DFN 40C to 125C LT3029HDE PBF LT3029HDE TRPBF 3029 16-Lead (4mm 3mm) Plastic DFN 40C to 150C LT3029EMSE PBF LT3029EMSE TRPBF 3029 16-Lead Plastic MSOP 40C to 125C LT3029IMSE PBF LT3029IMSE TRPBF 3029 16-Lead Plastic MSOP 40C to 125C LT3029HMSE PBF LT3029HMSE TRPBF 3029 16-Lead Plastic MSOP 40C to 150C LT3029MPMSE PBF LT3029MPMSE TRPBF 3029 16-Lead Plastic MSOP 55C to 125C LEAD BASED FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LT3029EDE LT3029EDE TR 3029 40C to 125C 16-Lead (4mm 3mm) Plastic DFN LT3029IDE LT3029IDE TR 3029 16-Lead (4mm 3mm) Plastic DFN 40C to 125C LT3029HDE LT3029HDE TR 3029 16-Lead (4mm 3mm) Plastic DFN 40C to 150C LT3029EMSE LT3029EMSE TR 3029 16-Lead Plastic MSOP 40C to 125C LT3029IMSE LT3029IMSE TR 3029 16-Lead Plastic MSOP 40C to 125C LT3029HMSE LT3029HMSE TR 3029 16-Lead Plastic MSOP 40C to 150C LT3029MPMSE LT3029MPMSE TR 3029 16-Lead Plastic MSOP 55C to 125C Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. 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