电子物料规格书.pdf

LT 1761 Series
ECHNOLOGY
LOOMA. LOW Noise
LDO Micropower
Regulators in SOT-23
FEATURES
DESCRPION
m Low Noise: 20UVRMS (10HZ to 100KHZ
The LT1761 series are micropower, low noise, ow
LOW Quiescent Current: 20UA
dropout regulators. With an external 0.0luf bypass
Wide Input Voltage Range: 1.8V to 20v
capacitor, output noise drops to 20uv RMS over a 10HZ to
Output Current: 100MA
100KHZ bandwidth. Designed for use in battery-powered
Very Low Shutdown Current: <0. lua
systems, the low 20UA quiescent current makes them ar
LOW Dropout Voltage: 300mv at 100MA
deal choice In shutdown, quiescent current drops to less
Fixed Output Voltages: 1.2V, 1. 5V, 1.8V, 2V, 2.5V,
than O1UA. The devices are capable of operating over an
2.8V,3V,3.3V,5V
input voltage from 1. 8V to 20V, and can supply 100MA of
Adjustable Output from 1. 22V to 20V
utput current With a dropout voltage of 300mv. Quies-
Stable With luf Output Capacitor
cent current is Well control led, not rising in dropout as it
Stable with Aluminum. Tantalum or
does with many other regulators
Ceramic Capacitors
a Reverse Battery Protected
The LT1761 regulators are stable With output capacitors
No Reverse Current
as low as 1UF. Small ceramic capacitors can be used
Without the series resistance required by other regulators
No Protection Diodes Needed
Overcurrent and Overtemperature Protected
Internal protection circuitry includes reverse battery pro
a Available in Tiny 5-lead S0T-23 Package
tection, current limiting, thermal limiting and reverse
current protection. The device is available in fixed output
APPLCAONS
voltages of 1.2V, 1.5V, 1. 8V, 2V,2.5V, 2.8V, 3V, 3.3vand
5V, and as an adjustable device With a 1.22V reference
a Cellular Phones
LT1761 regulators are available in the 5-lead
Pagers
S0T-23 package
Battery-powered Systems
Frequency Synthesizers
LT, LTC and LTM are registered trademarks of Linear Technology Corporation
All other trademarks are the property of their respective owners
Wireless Modems
TYPCAL APPLCAION
10HZ to 100khz Output Noist
5 Low Noise Regulator
T100MA
OUT
RMS
NOIS
5.4VT0
UF
LT1761-5
0.01uF
2N_
SHDN BYP
100V
2ou VRMS
ND
1761 sfc
ALINEA