lt1763cs8-trpbf Linear Technology Corporation, lt1763cs8-trpbf Datasheet

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lt1763cs8-trpbf

Manufacturer Part Number
lt1763cs8-trpbf
Description
500ma, Low Noise, Ldo Micropower Regulators
Manufacturer
Linear Technology Corporation
Datasheet
FEATURES
TYPICAL APPLICATIO
APPLICATIO S
3.7V TO
20V
Low Noise: 20µV
Output Current: 500mA
Low Quiescent Current: 30µA
Wide Input Voltage Range: 1.8V to 20V
Low Dropout Voltage: 300mV
Very Low Shutdown Current: < 1
No Protection Diodes Needed
Fixed Output Voltages: 1.5V, 1.8V, 2.5V, 3V, 3.3V, 5V
Adjustable Output from 1.22V to 20V
Stable with 3.3µF Output Capacitor
Stable with Aluminum, Tantalum or
Ceramic Capacitors
Reverse Battery Protection
No Reverse Current
Overcurrent and Overtemperature Protected
8-Lead SO and 12-lead (4mm × 3mm) DFN
Packages
Cellular Phones
Battery-Powered Systems
Noise-Sensitive Instrumentation Systems
V
IN
1µF
3.3V Low Noise Regulator
U
RMS
IN
SHDN
LT1763-3.3
(10Hz to 100kHz)
GND
SENSE
OUT
BYP
U
µ
A
0.01µF
1763 TA01
+
10µF
3.3V AT 500mA
20µV
RMS
NOISE
DESCRIPTIO
The LT
dropout regulators. The devices are capable of supplying
500mA of output current with a dropout voltage of 300mV.
Designed for use in battery-powered systems, the low
30µA 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 LT1763 regulators is low output noise.
With the addition of an external 0.01µF bypass capacitor,
output noise drops to 20µV
bandwidth. The LT1763 regulators are stable with output
capacitors as low as 3.3µF. 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 parts come in fixed output volt-
ages of 1.5V, 1.8V, 2.5V, 3V, 3.3V and 5V, and as
an adjustable device with a 1.22V reference voltage.
The LT1763 regulators are available in 8-lead SO
and 12-lead, low profile (4mm × 3mm × 0.75mm) DFN
packages.
All other trademarks are the property of their respective owners. Protected by U.S. Patents,
including 6144250, 6118263.
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
500mA, Low Noise, LDO
Micropower Regulators
®
1763 series are micropower, low noise, low
400
350
300
250
200
150
100
50
0
0
U
100
Dropout Voltage
OUTPUT CURRENT (mA)
200
RMS
LT1763 Series
300
over a 10Hz to 100kHz
400
1763 TA02
500
1763fc
1

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