lt3022emse Linear Technology Corporation, lt3022emse Datasheet

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lt3022emse

Manufacturer Part Number
lt3022emse
Description
Lt3022 1a, 0.9v To 10v, Very Low Dropout Linear Regulator Features
Manufacturer
Linear Technology Corporation
Datasheet

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FeaTures
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applicaTions
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Typical applicaTion
V
Dropout Voltage: 145mV Typical
Output Current: 1A
Adjustable Output (V
Stable with Low ESR, Ceramic Output Capacitors
(10µF Minimum)
0.05% Typical Load Regulation from 1mA to 1A
Quiescent Current: 400µA Typical
7.5µA Typical Quiescent Current in Shutdown
Current Limit Protection
Reverse-Battery Protection with No Reverse Current
Thermal Limiting with Hysteresis
16-Lead (5mm × 3mm) DFN and MSOP Packages
High Efficiency Linear Regulators
Battery-Powered Systems
Logic Supplies
Post Regulator for Switching Supplies
Wireless Modems
FPGA Core Supplies
IN
Range: 0.9V to 10V
1.2V
V
IN
1.2V to 0.9V, 1A VLDO Regulator
10µF
IN
SHDN
REF
LT3022
GND
= V
OUT
ADJ
OUT(MIN)
698
1%
200
1%
3022 TA01a
= 200mV)
10µF
V
0.9V
1A
OUT
DescripTion
The LT
linear regulator that operates from single input supplies
down to 0.9V. The device supplies 1A output current
with 145mV typical dropout voltage. The LT3022 is ideal
for low input voltage to low output voltage applications,
providing comparable electrical efficiency to a switching
regulator. The regulator optimizes stability and transient
response with low ESR ceramic output capacitors as small
as 10µF . Other LT3022 features include 0.05% typical line
regulation and 0.05% typical load regulation. In shutdown,
quiescent current typically drops to 7.5µA. Internal protec-
tion circuitry includes reverse-battery protection, current
limiting, thermal limiting with hysteresis and reverse-cur-
rent protection.
The LT3022 is available as an adjustable device with an
output voltage range down to the 200mV reference. The
LT3022 regulator is available in the thermally enhanced
low profile (0.75mm) 16-lead (5mm × 3mm) DFN and
MSOP packages.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. VLDO is a trademark of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
®
3022 is a very low dropout voltage (VLDO™)
0.5
0.4
1.1
1.0
0.9
0.8
0.7
0.6
0.3
0.2
0.1
0
–50
–25
Minimum Input Voltage
Very Low Dropout
Linear Regulator
0
TEMPERATURE (°C)
1A, 0.9V to 10V,
25
50
75
100
I
L
3022 TA01b
= 1A
125
LT3022

3022f

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lt3022emse Summary of contents

Page 1

... DFN and MSOP packages. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. VLDO is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. 1.1 1 ...

Page 2

... LT3022EDHC LT3022EDHC#TR LT3022IDHC LT3022IDHC#TR LT3022EMSE LT3022EMSE#TR LT3022IMSE LT3022IMSE#TR Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. For more information on lead free part marking, go to: For more information on tape and reel specifications, go to: ...

Page 3

T PARAMETER Minimum Input Voltage (Notes 4, 6) ADJ Pin Voltage (Notes 5, 6) Line Regulation (Note 7) Load Regulation (Note 7) Dropout Voltage (Notes 8, 9) GND Pin Current ...

Page 4

LT3022 elecTrical characTerisTics Note 6: The LT3022 typically supplies 1A output current with a 0.9V input supply. The guaranteed minimum input voltage for 1A output current is 1.10V, especially if cold temperature operation is required. Note 7: The LT3022 is ...

Page 5

Typical perForMance characTerisTics ADJ Pin Bias Current 100 – 100 –25 TEMPERATURE (°C) 3022 G06 Quiescent Current 5 1.5V OUT 4 ...

Page 6

LT3022 Typical perForMance characTerisTics GND Pin Current vs I LOAD 1. 1.2V 21 OUT V = 10V SHDN T = 25° 100 200 300 400 ...

Page 7

Typical perForMance characTerisTics Input Ripple Rejection 100 1.5V + 0.5V RIPPLE AT 120Hz IN P 0.5V OUT C = 10µF 10 OUT ...

Page 8

LT3022 pin FuncTions NC (Pins 15, 16): No Connect Pins. These pins have no connection to internal circuitry. These pins may be floated, tied tied to GND for improved thermal IN performance. OUT (Pins ...

Page 9

DiagraM SHDN 9 SHUTDOWN 200mV BIAS CURRENT AND REFERENCE GENERATOR 213mV IDEAL DIODE applicaTions inForMaTion The LT3022 very low dropout linear regulator is capable of 0.9V input supply operation. It supplies 1A output current and dropout voltage is typically ...

Page 10

LT3022 applicaTions inForMaTion Table 1 shows 1% resistor divider values for some common output voltages with a resistor divider current equaling or about 1mA. Table 1 V (V) R1 (Ω) OUT 0.9 200 1.0 187 1.2 200 1.5 200 1.8 ...

Page 11

V = 1.3V 1ms/DIV OUT C = 10µF OUT LOAD Figure 4. Noise Resulting from Tapping on a Ceramic Capacitor No-Load/Light-Load Recovery A possible transient load step that occurs is where the output current ...

Page 12

LT3022 applicaTions inForMaTion The following tables list thermal resistance as a function of copper area in a fixed board size. All measurements are taken in still air on a 4-layer FR-4 board with 1oz solid internal planes, and 2oz external ...

Page 13

The LT3022 incurs no damage if the ADJ pin is pulled above or below ground by 10V left open-circuited or grounded and ADJ is pulled above ground, ADJ acts like a 25k resistor in series ...

Page 14

LT3022 package DescripTion 3.50 0.05 1.65 0.05 2.20 0.05 (2 SIDES) RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS PIN 1 TOP MARK (SEE NOTE 6) 0.200 REF NOTE: 1. DRAWING PROPOSED TO BE MADE VARIATION OF VERSION (WJED-1) IN JEDEC PACKAGE ...

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

... Capacitors, MSOP-8 and 2mm × 3mm DFN-6 packages www.linear.com ● V OUT 1.2V 1A 10µF : 0.2V to 9.5V 0.15V 120µ RMS , RMS : 0.4V to 3.6V, Dropout Voltage: 45mV 100µA, OUT Q RMS : 0V to 35.7V, Current-Based Reference with 1-Resistor RMS : 0V to 35.7V, Current-Based Reference with 1-Resistor LT 0410 • PRINTED IN USA  LINEAR TECHNOLOGY CORPORATION 2010 , , 3022f ...

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