LT3060 Datasheet, PDF (1/20 Pages) Linear Technology – 45V VIN, Micropower, Low Noise, 100mA Low Dropout, Linear Regulator

FEATURES
n _{Input Voltage Range: 1.6V to 45V}
n _{Output Current: 100mA}
n _{Quiescent Current: 40μA}
n _{Dropout Voltage: 300mV}
n _{Low Noise: 30μVRMS (10Hz to 100kHz)}
n _{Adjustable Output: VREF = 600mV}
n _{Output Tolerance: ±2% Over Line, Load and}
Temperature
n _{Single Capacitor Soft-Starts Reference and Lowers}
Output Noise
n _{Shutdown Current: < 1μA}
n _{Reverse Battery Protection}
n _{Current Limit Foldback Protection}
n _{Thermal Limit Protection}
n _{8-Lead 2mm × 2mm × 0.75mm DFN and 8-Lead}
ThinSOT^™ Packages
APPLICATIONS
n _{Battery-Powered Systems}
n _{Automotive Power Supplies}
n _{Industrial Power Supplies}
n _{Avionic Power Supplies}
n _{Portable Instruments}
LT3060
45V V_IN, Micropower,
Low Noise, 100mA Low
Dropout, Linear Regulator
DESCRIPTION
The LT^®3060 is a micropower, low dropout voltage (LDO)
linear regulator that operates over a 1.6V to 45V input
supply range. The device supplies 100mA of output current
with a typical dropout voltage of 300mV. A single external
capacitor provides programmable low noise reference
performance and output soft-start functionality. The
LT3060’s quiescent current is merely 40μA and provides
fast transient response with a minimum 2.2μF output
capacitor. In shutdown, quiescent current is less than 1μA
and the reference soft-start capacitor is reset.
The LT3060 optimizes stability and transient response
with low ESR, ceramic output capacitors. The regulator
does not require the addition of ESR as is common with
other regulators. The LT3060 typically provides 0.1% line
regulation and 0.03% load regulation.
Internal protection circuitry includes reverse-battery
protection, reverse-output protection, reverse-current
protection, current limit with foldback and thermal shutdown.
The LT3060 is an adjustable voltage regulator with an output
voltage range from the 600mV reference to 44.5V. The
LT3060 is offered in the thermally enhanced 8-lead TSOT-23
and 8-lead (2mm × 2mm × 0.75mm) DFN packages.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. 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
V_IN
2.3V TO
45V
IN
OUT
1μF
LT3060
249k
1%
SHDN
ADJ
124k
GND REF/BYP
1%
C_FF
10nF
V_OUT
1.8V AT 100mA
30μV_RMS NOISE
10μF
10nF
3060 TA01
Dropout Voltage
350
T_J = 25°C
300
250
200
150
100
50
0
0 10 20 30 40 50 60 70 80 90 100
OUTPUT CURRENT (mA)
3060 TA02
3060f
1