LT1763 Series 500mA, Low Noise, LDO Micropower Regulators Fea T Descrip T n Low Noise: 20V (10Hz to 100kHz) The LT 1763 series are micropower, low noise, low dropout RMS n Output Current: 500mA regulators. The devices are capable of supplying 500mA of n Low Quiescent Current: 30A output current with a dropout voltage of 300mV. Designed n Wide Input Voltage Range: 1.8V to 20V for use in battery-powered systems, the low 30A quiescent n Low Dropout Voltage: 300mV current makes them an ideal choice. Quiescent current is n Very Low Shutdown Current: < 1A well controlled it does not rise in dropout as it does with n No Protection Diodes Needed many other regulators. n Fixed Output Voltages: 1.5V, 1.8V, 2.5V, 3V, 3.3V, 5V A key feature of the LT1763 regulators is low output noise. n Adjustable Output from 1.22V to 20V With the addition of an external 0.01F bypass capacitor, n Stable with 3.3F Output Capacitor output noise drops to 20V over a 10Hz to 100kHz RMS n Stable with Aluminum, Tantalum or Ceramic bandwidth. The LT1763 regulators are stable with output Capacitors capacitors as low as 3.3F. Small ceramic capacitors can n Reverse Battery Protection be used without the series resistance required by other n No Reverse Current regulators. n Overcurrent and Overtemperature Protected n Internal protection circuitry includes reverse battery 8-Lead SO and 12-Lead (4mm 3mm) DFN protection, current limiting, thermal limiting and reverse Packages current protection. The parts come in fixed output voltages a T of 1.5V, 1.8V, 2.5V, 3V, 3.3V and 5V, and as an adjustable device with a 1.22V reference voltage. The LT1763 regu- n Cellular Phones lators are available in 8-lead SO and 12-lead, low profile n Battery-Powered Systems (4mm 3mm 0.75mm) DFN packages. n Noise-Sensitive Instrumentation Systems L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents including 6144250, 6118263. Typical a T Dropout Voltage 400 3.3V Low Noise Regulator 350 3.3V AT 500mA 300 IN OUT V 20V NOISE IN + RMS 3.7V TO 1F SENSE 10F 250 20V LT1763-3.3 0.01F 200 SHDN BYP 150 GND 100 1763 TA01 50 0 0 100 200 300 400 500 OUTPUT CURRENT (mA) 1763 TA02 1763fh 1 For more information www.linear.com/LT1763 DROPOUT VOLTAGE (mV) ion pplica ions pplica ion uresLT1763 Series a Te Maxi Mu M r a T (Note 1) IN Pin Voltage ........................................................ 20V Operating Junction Temperature Range (Note 2) OUT Pin Voltage ..................................................... 20V C, I Grade ...........................................40C to 125C Input to Output Differential Voltage ........................ 20V MP Grade ...........................................55C to 125C SENSE Pin Voltage ............................................... 20V Storage Temperature Range ADJ Pin Voltage ...................................................... 7V S8 Package ........................................65C to 150C BYP Pin Voltage .....................................................0.6V DFN Package ......................................65C to 150C SHDN Pin Voltage ................................................ 20V Lead Temperature (Soldering, 10 sec) Output Short-Circuit Duration ........................ Indefinite S8 Package ....................................................... 300C pin con F T TOP VIEW NC 1 12 NC TOP VIEW OUT 2 11 IN OUT 1 8 IN OUT 3 10 IN SENSE/ADJ* 2 7 GND 13 NC 4 9 NC GND GND 3 6 GND SENSE/ADJ* 5 8 SHDN BYP 4 5 SHDN BYP 6 7 GND S8 PACKAGE 8-LEAD PLASTIC SO DE PACKAGE 12-LEAD (4mm 3mm) PLASTIC DFN T = 150C, = 70C/W, = 35C/W JMAX JA JC T = 125C, = 40C/W, = 5C/W JMAX JA JC *PIN 2: SENSE FOR LT1763-1.5/LT1763-1.8/LT1763-2.5/LT1763-3/LT1763-3.3/LT1763-5 EXPOSED PAD (PIN 13) IS GND, MUST BE SOLDERED TO PCB ADJ FOR LT1763 *PIN 5: SENSE FOR LT1763-1.5/LT1763-1.8/LT1763-2.5/LT1763-3/LT1763-3.3/LT1763-5 SEE THE APPLICATIONS INFORMATION SECTION. ADJ FOR LT1763 SEE THE APPLICATIONS INFORMATION SECTION. Der in F Ma T LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LT1763CDE PBF LT1763CDE TRPBF 1763 12-Lead (4mm 3mm) Plastic DFN 40C to 125C LT1763IDE PBF LT1763IDE TRPBF 1763 40C to 125C 12-Lead (4mm 3mm) Plastic DFN LT1763MPDE PBF LT1763MPDE TRPBF 1763 12-Lead (4mm 3mm) Plastic DFN 55C to 125C LT1763CDE-1.5 PBF LT1763CDE-1.5 TRPBF 76315 12-Lead (4mm 3mm) Plastic DFN 40C to 125C LT1763IDE-1.5 PBF LT1763IDE-1.5 TRPBF 76315 12-Lead (4mm 3mm) Plastic DFN 40C to 125C LT1763MPDE-1.5 PBF LT1763MPDE-1.5 TRPBF 76315 12-Lead (4mm 3mm) Plastic DFN 55C to 125C LT1763CDE-1.8 PBF LT1763CDE-1.8 TRPBF 76318 40C to 125C 12-Lead (4mm 3mm) Plastic DFN 1763fh 2 For more information www.linear.com/LT1763 ion or or ion igura ings bsolu