LT3020-1.5_15 Datasheet, PDF (1/16 Pages) Linear Technology – 100mA, Low Voltage, Very Low Dropout Linear Regulator

LT3020/LT3020-1.2/
LT3020-1.5/LT3020-1.8
100mA, Low Voltage,
Very Low Dropout
Linear Regulator
FEATURES
■ _{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}
U
APPLICATIO S
■ _{Low Current Regulators}
■ _{Battery-Powered Systems}
■ _{Cellular Phones}
■ _Pagers
■ _{Wireless Modems}
DESCRIPTIO
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 2.2µF. Other LT3020 features include 0% typical
line regulation and 0.2% typical load regulation. In shut-
down, quiescent current drops to 3µA.
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.
All other trademarks are the property of their respective owners.
TYPICAL APPLICATIO
1.8V to 1.5V, 100mA VLDO Regulator
V_IN
1.8V
IN
OUT
2.2µF
LT3020-1.5
SHDN
GND
V_OUT
1.5V
2.2µF ^100mA
3020 TA01
Minimum Input Voltage
1.1 _{IL = 100mA}
1.0
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