LT3062_15 Datasheet, PDF (1/20 Pages) Linear Technology – 45V VIN, Micropower, Low Noise, 200mA LDO

LT3062
45V V_IN, Micropower,
Low Noise, 200mA LDO
Features
n _{Input Voltage Range: 1.6V to 45V}
n _{Output Current: 200mA}
n _{Quiescent Current: 45µA}
n _{Dropout Voltage: 300mV}
n _{Low Noise: 30µVRMS (10Hz to 100kHz)}
n _{Adjustable Output (VREF = 600mV)}
n _{Output Tolerance: ±2% Over Load, Line, and}
Temperature
n _{Single Capacitor Soft-Starts Reference and Lowers}
Output Noise
n _{Shutdown Current: < 1µA}
n _{Reverse Battery Protection}
n _{Current Limit Foldback and Thermal Limit Protection}
n _{8-Lead 2mm × 3mm DFN and MSOP Packages}
Applications
n _{Battery Powered Systems}
n _{Automotive Power Supplies}
n _{Industrial Power Supplies}
n _{Avionic Power Supplies}
n _{Portable Instruments}
Description
The LT^®3062 is a micropower, low dropout (LDO) linear
regulator that operates over a 1.6V to 45V supply range.
The device supplies 200mA of output current with a typi-
cal dropout voltage of 300mV. A single external capacitor
provides programmable low noise reference performance
and output soft-start functionality. The LT3062’s quiescent
current is merely 45μA and provides fast transient response
with a minimum 3.3μF output capacitor. In shutdown,
quiescent current is less than 1μA and the reference soft
start capacitor is reset.
The LT3062 optimizes stability and transient response
with low ESR, ceramic output capacitors. The LT3062
does not require the addition of ESR as is common with
other regulators.
Internal protection circuitry includes reverse-battery pro-
tection, reverse-output protection, reverse-current protec-
tion, current limit with foldback and thermal shutdown.
The LT3062 is available as an adjustable device with an
output voltage range from the 600mV reference up to 40V.
The LT3062 is offered in the thermally enhanced 8-lead
2mm × 3mm DFN and MSOP packages.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the property
of their respective owners.
Typical Application
1.8V Low Noise Regulator
IN
OUT
V_OUT
1.8V
V_IN
2.3V
1µF
LT3062
200mA
118k
1%
10µF
SHDN
ADJ
59k
GND BYP
1%
0.01µF
3062 TA01
550
500
450
400
350
300
250
200
150
100
50
0
0
Dropout Voltage
T_J = 25°C
25 50 75 100 125 150 175 200
OUTPUT CURRENT (mA)
3062 TA01a
For more information www.linear.com/LT3062
3062f
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