LT3020/LT3020-1.2/
LT3020-1.5/LT3020-1.8
100mA, Low Voltage,
Very Low Dropout
Linear Regulator
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FEATURES
DESCRIPTIO
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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
Minimum Input Voltage: 0.9V
Dropout Voltage: 150mV Typical
Output Current: 100mA
Adjustable Output (VREF = VOUT(MIN) = 200mV)
Fixed Output Voltages: 1.2V, 1.5V, 1.8V
Stable with Low ESR, Ceramic Output Capacitors
(2.2µF Minimum)
0.2% Load Regulation from 1mA to 100mA
Quiescent Current: 120µA (Typ)
3µA Typical Quiescent Current in Shutdown
Current Limit Protection
Reverse-Battery Protection
No Reverse Current
Thermal Limiting with Hysteresis
8-Lead DFN (3mm × 3mm) and MSOP Packages
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APPLICATIO S
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Low Current Regulators
Battery-Powered Systems
Cellular Phones
Pagers
Wireless Modems
Internal protection circuitry includes reverse-battery protection, current limiting, thermal limiting with hysteresis,
and reverse-current protection. The LT3020 is available as
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.
The LT3020 regulator is available in the low profile
(0.75mm) 8-lead (3mm × 3mm) DFN package with Exposed 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.
All other trademarks are the property of their respective owners.
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The LT3020 regulator optimizes stability and transient
response with low ESR, ceramic output capacitors as
small as 2.2µF. Other LT3020 features include 0% typical
line regulation and 0.2% typical load regulation. In shutdown, quiescent current drops to 3µA.
TYPICAL APPLICATIO
Minimum Input Voltage
1.1
1.8V to 1.5V, 100mA VLDO Regulator
VIN
1.8V
IN
2.2µF
OUT
LT3020-1.5
2.2µF
SHDN
GND
3020 TA01
VOUT
1.5V
100mA
MINIMUM INPUT VOLTAGE (V)
1.0
IL = 100mA
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
–50
–25
0
25
50
75
TEMPERATURE (°C)
100
125
3020 TA02
3020fc
1
