LT3032 Series Dual 150mA Positive/Negative Low Noise Low Dropout Linear Regulator FEATURES DESCRIPTION n Low Noise: 20V (Positive) and The LT 3032 is a dual, low noise, positive and negative low RMS 30V (Negative) dropout voltage linear regulator. Each regulator delivers RMS n Low Quiescent Current: 30A/Channel up to 150mA with a typical 300mV dropout voltage. Each n Wide Input Voltage Range: 2.3V to 20V regulators quiescent current is low (30A operating and n Output Current: 150mA <3A in shutdown) and well-controlled in dropout, making n Low Shutdown Current: <3A Total (Typical) it an excellent choice for battery-powered circuits. n Low Dropout Voltage: 300mV/Channel Another key feature of the LT3032 is low output noise. n Fixed Output Voltages: 3.3V, 5V, 12V, 15V Adding an external 10nF bypass capacitor to each regulator n Adjustable Outputs from 1.22V to 20V reduces output noise to 20V 30V over a 10Hz to RMS/ RMS n No Protection Diodes Needed 100kHz bandwidth. The LT3032 is stable with minimum n Stable with 2.2F Output Capacitors output capacitors of 2.2F. The regulators do not require n Stable with Ceramic, Tantalum or Aluminum Capacitors the addition of ESR as is common with other regulators. n Starts into Reverse Output Voltage n The regulators are offered as adjustable output devices with Current Limit and Thermal Limit n an output voltage down to the 1.22V reference voltage or Low Profile 14-Lead 4mm 3mm 0.75mm in fixed voltages of 3.3V, 5V, 12V and 15V. Internal DFN Package protection circuitry includes reverse-output protection, current limiting and thermal limiting. APPLICATIONS The LT3032 is available in a unique low profile 14-lead n Battery-Powered Instruments 4mm 3mm 0.75mm DFN package with exposed back- n Bipolar Power Supplies side pads for each regulator, allowing optimum thermal n Low Noise Power Supplies performance. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and ThinSOT is a trademark of Analog Devices, Inc. All other trademarks are the property of their respective owners. TYPICAL APPLICATION Dual Polarity Low Noise 150mA Power Supply 10Hz to 100kHz Output Noise 5V OUT AT 150mA INP OUTP 20V NOISE RMS 5.4V TO OUTP 10F LT3032-5 20V 0.01F 10F RMS 20V 100V/DIV <0.25V = OFF SHDNP BYPP >2V = ON GND SHDNN BYPN 5.4V TO OUTN 10F 0.01F 10F 30V RMS 20V 100V/DIV 5V OUT AT 150mA INN OUTN 30V NOISE RMS 3032 TA01 3032 TA02a 1mS/DIV 3032ff 1 For more information www.linear.com/LT3032LT3032 Series ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Note 1) TOP VIEW INP Pin Voltage .......................................................20V OUTP 1 14 INP INN Pin Voltage .......................................................20V NC /ADJP 2 15 13 NC OUTP Pin Voltage....................................................20V GND BYPP 3 12 SHDNP OUTN Pin Voltage (Note 3) .....................................20V GND 4 11 BYPN INP Pin to OUTP Pin Differential Voltage ................20V GND 5 10 SHDNN 16 INN 6 9 INN OUTN Pin to INN Pin Differential Voltage INN OUTN 7 8 ADJN/NC (Note 3) ..........................................................0.5V, 20V ADJP Pin Voltage ......................................................7V DE14MA PACKAGE 14-LEAD (4mm 3mm) PLASTIC DFN ADJN Pin Voltage T = 125C, = 30C/W TO 43C/W*, = 10C/W* JMAX JA JC (with Respect to INN Pin, Note 3) ..................0.5V, 20V *SEE APPLICATIONS INFORMATION FOR MORE DETAIL PIN 2: NC FOR LT3032-3.3/LT3032-5/LT3032-12/LT3032-15, ADJP FOR LT3032 BYPP Pin Voltage ...................................................0.5V PIN 8: NC FOR LT3032-3.3/LT3032-5/LT3032-12/LT3032-15, ADJN FOR LT3032 BYPN Pin Voltage EXPOSED PAD (PIN 15) IS GND, MUST BE SOLDERED TO PINS 4, 5 ON PCB EXPOSED PAD (PIN 16) IS INN, MUST BE SOLDERED TO PINS 6, 9 ON PCB (with Respect to INN Pin) ........................................20V SHDNP Pin Voltage .................................................20V SHDNN Pin Voltage (with Respect to INN Pin, Note 3) ..................0.5V, 35V SHDNN Pin Voltage (with Respect to GND Pin) ..............................20V, 15V Output Short-Circuit Duration .......................... Indefinite Operating Junction Temperature Range (Note 2) E, I Grades ......................................... 40C to 125C MP-Grade .......................................... 55C to 125C Storage Temperature Range .................. 65C to 150C