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1
LT3020/LT3020-1.2/
LT3020-1.5/LT3020-1.8
100mA, Low Voltage,
Very Low Dropout
Linear Regulator
sn3020 3020fas
TEMPERATURE (
°
C)
–50
M
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
3020 TA02
25
0
–25
50
75
125
100
I
L
= 100mA
APPLICATIU
FEATURES
TYPICAL APPLICATIO
U
DESCRIPTIO
U
■
V
IN
Range: 0.9V to 10V
■
Minimum Input Voltage: 0.9V
■
Dropout Voltage: 150mV Typical
■
Output Current: 100mA
■
Adjustable Output (V
REF
= V
OUT(MIN)
= 200mV)
■
Fixed Output Voltages: 1.2V, 1.5V, 1.8V
■
Stable with Low ESR, Ceramic Output Capacitors
(2.2
μ
F Minimum)
■
0.2% Load Regulation from 0mA to 100mA
■
Quiescent Current: 120
μ
A (Typ)
■
3
μ
A 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
1.8V to 1.5V, 100mA VLDO Regulator
■
Low Current Regulators
■
Battery-Powered Systems
■
Cellular Phones
■
Pagers
■
Wireless Modems
The LT
3020 is a very low dropout voltage (VLDO
TM
) 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.
The LT3020 regulator optimizes stability and transient
response with low ESR, ceramic output capacitors as
small as 2.2
μ
F. Other LT3020 features include 0% line
regulation and 0.2% typical load regulation. In shutdown,
quiescent current typically drops to 3
μ
A.
Internal protection circuitry includes reverse-battery pro-
tection, 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 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.
IN
SHDN
2.2
μ
F
3020 TA01
OUT
V
IN
1.8V
GND
LT3020-1.5
V
1.5V
100mA
2.2
μ
F
Minimum Input Voltage