LT3032IDE#PBF Linear Technology, LT3032IDE#PBF Datasheet

IC REG LDO ADJ .15A DUAL 14DFN

LT3032IDE#PBF

Manufacturer Part Number
LT3032IDE#PBF
Description
IC REG LDO ADJ .15A DUAL 14DFN
Manufacturer
Linear Technology
Datasheet

Specifications of LT3032IDE#PBF

Regulator Topology
Positive and Negative Adjustable
Voltage - Output
±1.22 ~ ±20 V
Voltage - Input
±2.3 ~ ±20 V
Voltage - Dropout (typical)
0.27V @ 150mA, 0.3V @ -150mA
Number Of Regulators
2
Current - Output
150mA
Current - Limit (min)
170mA
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
14-DFN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

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Quantity:
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FeaTures
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applicaTions
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Typical applicaTion
<0.25V = OFF
Low Noise: 20µV
30µV
Low Quiescent Current: 30µA/Channel
Wide Input Voltage Range: ±2.3V to ±20V
Output Current: ±150mA
Low Shutdown Current: <3µA Total (Typical)
Low Dropout Voltage: 300mV/Channel
Fixed Output Voltage: ±5V
Adjustable Outputs from ±1.22V to ±20V
No Protection Diodes Needed
Stable with 2.2µF Output Capacitors
Stable with Ceramic, Tantalum or Aluminum Capacitors
Starts into Reverse Output Voltage
Current Limit and Thermal Limit
Low Profile 14-Lead 4mm × 3mm × 0.75mm
DFN Package
Battery-Powered Instruments
Bipolar Power Supplies
Low Noise Power Supplies
>2V = ON
–5.4V TO
5.4V TO
RMS
–20V
20V
Dual Polarity Low Noise 150mA Power Supply
(Negative)
RMS
10µF
10µF
(Positive) and
INP
SHDNP
SHDNN
INN
LT3032-5
OUTP
BYPN
OUTN
BYPP
GND
3032 TA01
0.01µF
0.01µF
10µF
10µF
Low Dropout Linear Regulator
5V OUT AT 150mA
20µV
–5V OUT AT –150mA
30µV
RMS
RMS
Positive/Negative Low Noise
NOISE
NOISE
DescripTion
The LT
dropout voltage linear regulator. Each regulator delivers
up to 150mA with a typical 300mV dropout voltage. Each
regulator’s quiescent current is low (30µA operating and
<3µA in shutdown) and well-controlled in dropout, making
it an excellent choice for battery-powered circuits.
Another key feature of the LT3032 is low output noise.
Adding an external 10nF bypass capacitor to each regulator
reduces output noise to 20µV
100kHz bandwidth. The LT3032 is stable with minimum
output capacitors of 2.2µF. The regulators do not require
the addition of ESR as is common with other regulators.
The regulators are offered as adjustable output devices
with an output voltage down to the ±1.22V reference volt-
age or as a fixed voltage device at ±5V output. Internal
protection circuitry includes reverse-output protection,
current limiting and thermal limiting.
The LT3032 is available in a unique low profile 14-lead
4mm × 3mm × 0.75mm DFN package with exposed back-
side pads for each regulator, allowing optimum thermal
performance.
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.
®
3032 is a dual, low noise, positive and negative low
100µV/DIV
100µV/DIV
OUTP
OUTN
10Hz to 100kHz Output Noise
RMS/
LT3032 Series
Dual 150mA
1mS/DIV
30µV
RMS
over a 10Hz to
3032 TA02a
20µV
30µV
RMS
RMS
3032fb
1

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LT3032IDE#PBF Summary of contents

Page 1

... DFN package with exposed back- side pads for each regulator, allowing optimum thermal performance. 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. 5V OUT AT 150mA 20µV ...

Page 2

... Output Short-Circuit Duration .......................... Indefinite Operating Junction Temperature Range (Note Grades ............................................. –40°C to 125°C Storage Temperature Range .................. –65°C to 150°C orDer inForMaTion LEAD FREE FINISH TAPE AND REEL LT3032EDE#PBF LT3032EDE#TRPBF LT3032IDE#PBF LT3032IDE#TRPBF LT3032EDE-5#PBF LT3032EDE-5#TRPBF LT3032IDE-5#PBF LT3032IDE-5#TRPBF LEAD BASED FINISH TAPE AND REEL LT3032EDE ...

Page 3

T PARAMETER Minimum INP Operating Voltage Minimum INN Operating Voltage Regulated Output Voltage LT3032-5 V (Notes 4, 10) LT3032-5 V ADJP Pin Voltage LT3032 (Notes 4, 5) ADJN Pin Voltage LT3032 (Notes ...

Page 4

LT3032 Series elecTrical characTerisTics temperature range, otherwise specifications are at T PARAMETER SHDNP Pin Current (Note 9) SHDNN Pin Current (Note 9) Quiescent Current in Shutdown Output Voltage Noise (10Hz to 100kHz) Ripple Rejection 120Hz ...

Page 5

Typical perForMance characTerisTics INP-to-OUTP Typical Dropout Voltage 500 450 400 350 T = 125°C J 300 250 200 T = 25°C J 150 100 100 120 140 160 LOAD CURRENT (mA) 3032 G01 ...

Page 6

LT3032 Series Typical perForMance characTerisTics LT3032 ADJN Pin Voltage –1.240 I = –1mA L –1.235 –1.230 –1.225 –1.220 –1.215 –1.210 –1.205 –1.200 –50 – 100 TEMPERATURE (°C) 3032 G08 LT3032 INP Quiescent Current ...

Page 7

Typical perForMance characTerisTics LT3032 Negative Side GND Pin Current –3 25° SHDNN INN *FOR V = –1.22V OUTN –2 8. –150mA* L –2 12 ...

Page 8

LT3032 Series Typical perForMance characTerisTics SHDNN Pin Input Current –15V INN POSITIVE CURRENT 9 FLOWS INTO THE PIN 15V SHDNN –15V SHDNN –3 –6 –9 –50 – ...

Page 9

Typical perForMance characTerisTics Reverse OUTP Pin Current INP V = 1.22V OUTP – 100 –25 TEMPERATURE (°C) 3032 G28 INN-to-OUTN Ripple Rejection –150mA ...

Page 10

LT3032 Series Typical perForMance characTerisTics Positive Load Regulation 0 –2 LT3032 –4 –6 –8 LT3032-5 –10 –12 –14 – +1V INP OUTP(NOMINAL) –18 ∆I = 1mA TO 150mA L –20 –50 – 100 ...

Page 11

Typical perForMance characTerisTics OUTP 10Hz to 100kHz Output Noise BYPP V OUTP 100µV/DIV 3032 G44 C = 10µF 1ms/DIV OUTP I = 150mA OUTP OUTN, 10Hz to 100kHz Output Noise 0.01µF ...

Page 12

LT3032 Series pin FuncTions OUTP (Pin 1): Positive Output. This output supplies power to the positive side load. A minimum output capacitor of 2.2µF is required to prevent oscillations. Larger out- put capacitors are required for applications with large transient ...

Page 13

FuncTions BYPN (Pin 11): Negative Bypass. The BYPN pin is used to bypass the reference of the negative side regulator to achieve low noise performance. A small capacitor from OUTN to this pin will bypass the reference to lower ...

Page 14

LT3032 Series applicaTions inForMaTion The LT3032 is a dual 150mA positive and negative low noise low dropout linear regulator with micropower quiescent current and shutdown. It supplies ±150mA at a dropout of 300mV. Output voltage noise can be lowered on ...

Page 15

BYPN pin operates at approximately –60mV. DC leakages on the order of 1µA into or out of these pins can throw off the internal reference by 20% or more. Output Capacitance ...

Page 16

LT3032 Series applicaTions inForMaTion 20 BOTH CAPACITORS ARE 16V, 1210 CASE SIZE, 10µF 0 X5R –20 –40 –60 Y5V –80 –100 BIAS VOLTAGE (V) Figure 3. Ceramic Capacitor DC Bias Characteristics 40 20 ...

Page 17

If wiring modifications are not permissible for the applications, including series resistance between the power supply and the input of the LT3032 also stabilizes the application. As little as 0.1Ω to 0.5Ω, often less, is effective in damping ...

Page 18

LT3032 Series applicaTions inForMaTion Calculating Junction Temperature Example: Given a positive output voltage of 3.3V, a positive input voltage 6V, output current range from 10mA to 150mA, negative output voltage of –3.3V, negative input voltage of –5V ...

Page 19

In situations where the ADJP pin is connected to a resistor divider that would pull the ADJP pin above its 7V clamp voltage if the output is pulled high, the ADJP pin input current must be limited to ...

Page 20

LT3032 Series package DescripTion 1.78 ±0.05 0.10 TYP 3.50 ±0.05 0.51 TYP 1.65 ± 0.05 2.10 ±0.05 RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS APPLY SOLDER MASK TO AREAS THAT ARE NOT SOLDERED 4.00 ±0.10 (2 SIDES) PIN 1 TOP MARK ...

Page 21

... Revised quiescent current for the positive side up to 25µA in Applications Information. 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 22

... ISD < 1μA; DFN and MS10E Q = 60μA, ISD < 1μA; DFN and Q = 50μA, ISD < 1μA; DFN and MS10E Q = 60μA, ISD < 1μA; DFN and Q LT 0111 REV B • PRINTED IN USA  LINEAR TECHNOLOGY CORPORA TION 2010 3032fb ...

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