lt3023emse-trpbf Linear Technology Corporation, lt3023emse-trpbf Datasheet

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lt3023emse-trpbf

Manufacturer Part Number
lt3023emse-trpbf
Description
Dual 100ma, Low Dropout, Low Noise, Micropower Regulator
Manufacturer
Linear Technology Corporation
Datasheet
FEATURES
APPLICATIONS
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TYPICAL APPLICATION
3.7V TO
20V
Low Noise: 20μV
Low Quiescent Current: 20μA/Channel
Wide Input Voltage Range: 1.8V to 20V
Output Current: 100mA/Channel
Very Low Shutdown Current: <0.1μA
Low Dropout Voltage: 300mV at 100mA
Adjustable Output from 1.22V to 20V
Stable with 1μF Output Capacitor
Stable with Aluminum, Tantalum or
Ceramic Capacitors
Reverse Battery Protected
No Reverse Current
No Protection Diodes Needed
Overcurrent and Overtemperature Protected
Thermally Enhanced 10-Lead MSOP and DFN
Packages
Cellular Phones
Pagers
Battery-Powered Systems
Frequency Synthesizers
Wireless Modems
V
IN
1μF
3.3V/2.5V Low Noise Regulators
RMS
IN
SHDN1
SHDN2
LT3023
GND
(10Hz to 100kHz)
OUT1
BYP1
OUT2
BYP2
ADJ1
ADJ2
0.01μF
0.01μF
422k
249k
261k
249k
10μF
10μF
3.3V AT100mA
20μV
2.5V AT100mA
20μV
RMS
RMS
NOISE
NOISE
3023 TA01
DESCRIPTION
The LT
out regulator. With an external 0.01μF bypass capacitor,
output noise drops to 20μV
bandwidth. Designed for use in battery-powered systems,
the low 20μA quiescent current per channel makes it an
ideal choice. In shutdown, quiescent current drops to less
than 0.1μA. Shutdown control is independent for each
channel, allowing for fl exibility in power management. The
device is capable of operating over an input voltage from
1.8V to 20V, and can supply 100mA of output current from
each channel with a dropout voltage of 300mV. Quiescent
current is well controlled in dropout.
The LT3023 regulator is stable with output capacitors as
low as 1μF . Small ceramic capacitors can be used without
the series resistance required by other regulators.
Internal protection circuitry includes reverse battery
protection, current limiting, thermal limiting and reverse
current protection. The device is available as an adjust-
able device with a 1.22V reference voltage. The LT3023
regulator is available in the thermally enhanced 10-lead
MSOP and DFN packages.
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other
trademarks are the property of their respective owners.
Low Dropout, Low Noise,
®
100μV/DIV
3023 is a dual, micropower, low noise, low drop-
Micropower Regulator
V
OUT
10Hz to 100kHz Output Noise
RMS
Dual 100mA,
over a 10Hz to 100kHz
3023 TA01b
LT3023
20μV
RMS
3023fa
1

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lt3023emse-trpbf Summary of contents

Page 1

... The device is available as an adjust- able device with a 1.22V reference voltage. The LT3023 regulator is available in the thermally enhanced 10-lead MSOP and DFN packages. L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. 3.3V AT100mA 20μV ...

Page 2

... LT3023EDD LT3023EDD#TR LT3023IDD LT3023IDD#TR LT3023EMSE LT3023EMSE#TR LT3023IMSE LT3023IMSE#TR Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grade is identifi label on the shipping container. For more information on lead free part marking, go to: For more information on tape and reel specifi cations, go to: ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi ...

Page 3

ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T PARAMETER CONDITIONS Line Regulation (Note 3) Δ 20V Load Regulation (Note 2.3V, Δ 2.3V, ΔI IN Dropout Voltage I ...

Page 4

LT3023 TYPICAL PERFORMANCE CHARACTERISTICS Typical Dropout Voltage 500 450 400 350 T = 125°C J 300 250 T = 25°C J 200 150 100 100 OUTPUT CURRENT (mA) ...

Page 5

TYPICAL PERFORMANCE CHARACTERISTICS SHDN1 or SHDN2 Pin Threshold (Off-to-On) 1.0 0 100mA L 0.8 0.7 0 1mA L 0.5 0.4 0.3 0.2 0 –50 – 100 TEMPERATURE (°C) 3023 G10 ADJ1 ...

Page 6

LT3023 TYPICAL PERFORMANCE CHARACTERISTICS Input Ripple Rejection 0.01μF BYP 1000pF BYP 100pF BYP 100mA 2.3V + 50mV RIPPLE IN RMS C ...

Page 7

TYPICAL PERFORMANCE CHARACTERISTICS RMS Output Noise vs Load Current (10Hz to 100kHz) 160 C = 10μF OUT C = 0μF BYP 140 C = 0.01μF BYP 120 V SET FOR 5V OUT 100 OUT ADJ 60 40 ...

Page 8

LT3023 PIN FUNCTIONS GND (Pin 3): Ground. ADJ1/ADJ2 (Pins 4/2): Adjust Pin. These are the inputs to the error amplifi ers. These pins are internally clamped to ± 7V. They have a bias current of 30nA which fl ows into ...

Page 9

APPLICATIONS INFORMATION The LT3023 is a dual 100mA low dropout regulator with micropower quiescent current and shutdown. The device is capable of supplying 100mA per channel at a dropout voltage of 300mV. Output voltage noise can be lowered to 20μV ...

Page 10

LT3023 APPLICATIONS INFORMATION Output Capacitance and Transient Response The LT3023 regulator is designed to be stable with a wide range of output capacitors. The ESR of the out- put capacitor affects stability, most notably with small capacitors. A minimum output ...

Page 11

APPLICATIONS INFORMATION case size increases, but expected capacitance at operating voltage should be verifi ed. Voltage and temperature coeffi cients are not the only sources of problems. Some ceramic capacitors have a piezoelectric response. A piezoelectric device generates voltage across ...

Page 12

LT3023 APPLICATIONS INFORMATION Calculating Junction Temperature Example: Given an output voltage on the fi rst channel of 3.3V, an output voltage of 2.5V on the second channel, an input voltage range 6V, output current ranges of 0mA ...

Page 13

APPLICATIONS INFORMATION In circuits where a backup battery is required, several different input/output conditions can occur. The output voltage may be held up while the input is either pulled to ground, pulled to some intermediate voltage or is left open ...

Page 14

LT3023 PACKAGE DESCRIPTION 3.50 ±0.05 1.65 ±0.05 2.15 ±0.05 (2 SIDES) 0.25 ± 0.05 0.50 BSC 2.38 ±0.05 (2 SIDES) RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS NOTE: 1. DRAWING TO BE MADE A JEDEC PACKAGE OUTLINE M0-229 VARIATION OF (WEED-2). ...

Page 15

... LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING) SHALL BE 0.102mm (.004") MAX Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. ...

Page 16

... ThinSOT Package SD : 1.8V to 20V 1.22V 30μA, I OUT(MIN 2.1V to 20V, IN <1μA, DD, TO220, SOT-223, S8 Packages SD : –0.9V to –20V 3μA, ThinSOT Package 40μA, I <1μA, MSE Package 0208 REV A • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 2003 OUT(MIN) <1μA, <1μA, <1μA, 3023fa ...

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