LT3022
1A, 0.9V to 10V,
Very Low Dropout
Linear Regulator
FeaTures
DescripTion
The LT®3022 is a very low dropout voltage (VLDO™)
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
responsewithlowESRceramicoutputcapacitorsassmall
as 10µF. Other LT3022 features include 0.05% typical line
regulationand0.05%typicalloadregulation.Inshutdown,
quiescentcurrenttypicallydropsto7.5µA.Internalprotec-
tion circuitry includes reverse-battery protection, current
limiting, thermal limiting with hysteresis and reverse-cur-
rent protection.
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V Range: 0.9V to 10V
IN
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Dropout Voltage: 145mV Typical
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Output Current: 1A
Adjustable Output (V
Stable with Low ESR, Ceramic Output Capacitors
(10µF Minimum)
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= V
= 200mV)
OUT(MIN)
REF
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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
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.
applicaTions
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High Efficiency Linear Regulators
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Battery-Powered Systems
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Logic Supplies
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Post Regulator for Switching Supplies
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.
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Wireless Modems
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FPGA Core Supplies
Typical applicaTion
Minimum Input Voltage
1.1
I
= 1A
L
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
1.2V to 0.9V, 1A VLDO Regulator
V
0.9V
1A
OUT
V
IN
IN
OUT
ADJ
1.2V
698Ω
1%
10µF
10µF
LT3022
SHDN
GND
200Ω
1%
3022 TA01a
–50
0
25
50
75 100 125
–25
TEMPERATURE (°C)
3022 TA01b
3022f
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