LT1761ES5-BYPTRPBF Datasheet, PDF (1/22 Pages) Linear Dimensions Semiconductor – 100mA, Low Noise, LDO Micropower Regulators in TSOT-23

FEATURES
n _{Low Noise: 20μVRMS (10Hz to 100kHz)}
n _{Low Quiescent Current: 20μA}
n _{Wide Input Voltage Range: 1.8V to 20V}
n _{Output Current: 100mA}
n _{Very Low Shutdown Current: <0.1μA}
n _{Low Dropout Voltage: 300mV at 100mA}
n _{Fixed Output Voltages: 1.2V, 1.5V, 1.8V, 2V, 2.5V,}
2.8V, 3V, 3.3V, 5V
n _{Adjustable Output from 1.22V to 20V}
n _{Stable with 1μF Output Capacitor}
n _{Stable with Aluminum, Tantalum or}
Ceramic Capacitors
n _{Reverse-Battery Protected}
n _{No Reverse Current}
n _{No Protection Diodes Needed}
n _{Overcurrent and Overtemperature Protected}
n _{Available in Tiny 5-Lead TSOT-23 Package}
APPLICATIONS
n _{Cellular Phones}
n _Pagers
n _{Battery-Powered Systems}
n _{Frequency Synthesizers}
n _{Wireless Modems}
LT1761 Series
100mA, Low Noise,
LDO Micropower
Regulators in TSOT-23
DESCRIPTION
The LT^®1761 series are micropower, low noise, low
dropout regulators. With an external 0.01μF bypass
capacitor, output noise drops to 20μV_RMS over a 10Hz to
100kHz bandwidth. Designed for use in battery-powered
systems, the low 20μA quiescent current makes them an
ideal choice. In shutdown, quiescent current drops to less
than 0.1μA. The devices are capable of operating over an
input voltage from 1.8V to 20V, and can supply 100mA of
output current with a dropout voltage of 300mV. Quiescent
current is well controlled, not rising in dropout as it does
with many other regulators.
The LT1761 regulators are stable with output capacitors as
low as 1μF. Small ceramic capacitors can be used without
the series resistance required by other regulators.
Internal protection circuitry includes reverse battery
protection, current limiting, thermal limiting and reverse
current protection. The device is available in fixed output
voltages of 1.2V, 1.5V, 1.8V, 2V, 2.5V, 2.8V, 3V, 3.3V and
5V, and as an adjustable device with a 1.22V reference
voltage. The LT1761 regulators are available in the 5-lead
TSOT-23 package.
L, LT, LTC, LTM, Linear Technology, the Linear logo and Burst Mode are registered trademarks
of Linear Technology Corporation. All other trademarks are the property of their respective
owners.
TYPICAL APPLICATION
V_IN
5.4V TO
20V
5V Low Noise Regulator
IN
OUT
5V AT100mA
+
20μV_RMS NOISE
1μF
LT1761-5
0.01μF
10μF
SHDN
BYP
GND
1761 TA01
10Hz to 100kHz Output Noise
V_OUT
100μV/DIV
20μV_RMS
1761 TA01b
1761sff
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