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LT1762 Datasheet(PDF) 1 Page - Linear Technology

Part No. LT1762
Description  150mA, Low Noise, LDO Micropower Regulators
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Maker  LINER [Linear Technology]
Homepage  http://www.linear.com
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LT1762 Datasheet(HTML) 1 Page - Linear Technology

 
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1
LT1762 Series
150mA, Low Noise, LDO
Micropower Regulators
s
Low Noise: 20
µVRMS (10Hz to 100kHz)
s
Low Quiescent Current: 25
µA
s
Wide Input Voltage Range: 1.8V to 20V
s
Output Current: 150mA
s
Very Low Shutdown Current: < 1
µA
s
Low Dropout Voltage: 300mV
s
No Protection Diodes Needed
s
Fixed Output Voltages: 2.5V, 3V, 3.3V, 5V
s
Adjustable Output from 1.22V to 20V
s
Stable with 2.2
µF Output Capacitor
s
Stable with Aluminum, Tantalum or
Ceramic Capacitors
s
Reverse Battery Protection
s
No Reverse Current
s
Overcurrent and Overtemperature Protected
s
8-Lead MSOP Package
The LT
®1762 series are micropower, low noise, low
dropout regulators. The devices are capable of supplying
150mA of output current with a dropout voltage of 300mV.
Designed for use in battery-powered systems, the low
25
µA quiescent current makes them an ideal choice.
Quiescent current is well controlled; it does not rise in
dropout as it does with many other regulators.
A key feature of the LT1762 regulators is low output noise.
With the addition of an external 0.01
µF bypass capacitor,
output noise drops to 20
µVRMS over a 10Hz to 100kHz
bandwidth. The LT1762 regulators are stable with output
capacitors as low as 2.2
µF. Small ceramic capacitors can
be used without the series resistance required by other
regulators.
Internal protection circuitry includes reverse battery pro-
tection, current limiting, thermal limiting and reverse
current protection. The parts come in fixed output volt-
ages of 2.5V, 3V, 3.3V and 5V, and as an adjustable device
with a 1.22V reference voltage. The LT1762 regulators are
available in the 8-lead MSOP package.
Dropout Voltage
3.3V Low Noise Regulator
s
Cellular Phones
s
Battery-Powered Systems
s
Frequency Synthesizers
s
Noise-Sensitive Instrumentation Systems
, LTC and LT are registered trademarks of Linear Technology Corporation.
IN
SHDN
0.01
µF
10
µF
1762 TA01
OUT
SENSE
VIN
3.7V TO
20V
BYP
GND
LT1762-3.3
3.3V AT 150mA
20
µVRMS NOISE
1
µF
+
OUTPUT CURRENT (mA)
0
400
350
300
250
200
150
100
50
0
80
100 120 140
1762 TA02
20
40
60
160
APPLICATIO S
DESCRIPTIO
FEATURES
TYPICAL APPLICATION


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