LT3020/LT3020-1.2/
LT3020-1.5/LT3020-1.8
100mA, Low Voltage,
Very Low Dropout
Linear Regulator
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DESCRIPTIO
FEATURES
The LT®3020 is a very low dropout voltage (VLDOTM) linear
regulator that operates from input supplies down to 0.9V.
This device supplies 100mA of output current with a
typical dropout voltage of 150mV. The LT3020 is ideal for
low input voltage to low output voltage applications,
providing comparable electrical efficiency to that of a
switching regulator.
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VIN Range: 0.9V to 10V
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Minimum Input Voltage: 0.9V
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Dropout Voltage: 150mV Typical
Output Current: 100mA
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Adjustable Output (VREF = VOUT(MIN) = 200mV)
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Fixed Output Voltages: 1.2V, 1.5V, 1.8V
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Stable with Low ESR, Ceramic Output Capacitors
(2.2µF Minimum)
The LT3020 regulator optimizes stability and transient
response with low ESR, ceramic output capacitors as
small as 2.2µF. Other LT3020 features include 0% line
regulation and 0.2% typical load regulation. In shutdown,
quiescent current typically drops to 3µA.
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0.2% Load Regulation from 0mA to 100mA
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Quiescent Current: 120µA (Typ)
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3µA Typical Quiescent Current in Shutdown
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Current Limit Protection
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Reverse-Battery Protection
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Internal protection circuitry includes reverse-battery pro-
tection, current limiting, thermal limiting with hysteresis,
andreverse-currentprotection. TheLT3020isavailableas
an adjustable output device with an output range down to
the 200mV reference. Three fixed output voltages, 1.2V,
1.5V and 1.8V, are also available.
No Reverse Current
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Thermal Limiting with Hysteresis
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8-Lead DFN (3mm × 3mm) and MSOP Packages
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APPLICATIO S
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Low Current Regulators
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Battery-Powered Systems
The LT3020 regulator is available in the low profile
(0.75mm) 8-lead (3mm × 3mm) DFN package with ex-
posed pad and the 8-lead MSOP package.
, LTC and LT are registered trademarks of Linear Technology Corporation.
VLDO is a trademark of Linear Technology Corporation.
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Cellular Phones
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Pagers
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Wireless Modems
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TYPICAL APPLICATIO
Minimum Input Voltage
1.8V to 1.5V, 100mA VLDO Regulator
1.1
I
= 100mA
L
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
V
OUT
V
IN
IN
OUT
LT3020-1.5
SHDN
GND
1.5V
1.8V
100mA
2.2µF
2.2µF
3020 TA01
–50 –25
0
25
50
75 100 125
TEMPERATURE (°C)
3020 TA02
sn3020 3020fas
1