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LT1963EQ-3.3 Datasheet(PDF) 1 Page - Linear Integrated Systems

Part # LT1963EQ-3.3
Description  1.5A, Low Noise, Fast Transient Response LDO Regulators
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Manufacturer  LINEAR [Linear Integrated Systems]
Direct Link  http://www.linearsystems.com
Logo LINEAR - Linear Integrated Systems

LT1963EQ-3.3 Datasheet(HTML) 1 Page - Linear Integrated Systems

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1
LT1963 Series
1963fa
TYPICAL APPLICATION
APPLICATIO S
FEATURES
DESCRIPTIO
1.5A, Low Noise,
Fast Transient Response
LDO Regulators
s
Optimized for Fast Transient Response
s
Output Current: 1.5A
s
Dropout Voltage: 340mV
s
Low Noise: 40
µVRMS (10Hz to 100kHz)
s
1mA Quiescent Current
s
No Protection Diodes Needed
s
Controlled Quiescent Current in Dropout
s
Fixed Output Voltages: 1.5V, 1.8V, 2.5V, 3.3V
s
Adjustable Output from 1.21V to 20V
s
<1
µA Quiescent Current in Shutdown
s
Stable with 10
µF Output Capacitor
s
Reverse Battery Protection
s
No Reverse Current
s
Thermal Limiting
The LT
®1963 series are low dropout regulators optimized
for fast transient response. The devices are capable of
supplying 1.5A of output current with a dropout voltage of
340mV. Operating quiescent current is 1mA, dropping to
<1
µA in shutdown. Quiescent current is well controlled; it
does not rise in dropout as it does with many other
regulators. In addition to fast transient response, the
LT1963 regulators have very low output noise which
makes them ideal for sensitive RF supply applications.
Output voltage range is from 1.21V to 20V. The LT1963
regulators are stable with output capacitors as low as
10
µF.Internalprotectioncircuitryincludesreversebattery
protection, current limiting, thermal limiting and reverse
current protection. The devices are available in fixed
output voltages of 1.5V, 1.8V, 2.5V, 3.3V and as an
adjustable device with a 1.21V reference voltage. The
LT1963 regulators are available in 5-lead TO-220, DD,
3-lead SOT-223 and 8-lead SO packages.
3.3V to 2.5V Regulator
s
3.3V to 2.5V Logic Power Supplies
s
Post Regulator for Switching Supplies
, LTC and LT are registered trademarks of Linear Technology Corporation.
IN
SHDN
10
µF
1963 TA01
OUT
VIN > 3V
SENSE
GND
LT1963-2.5
2.5V
1.5A
10
µF
+
+
OUTPUT CURRENT (A)
0
200
300
1.6
1963 TA02
100
0
0.4
0.8
1.2
0.2
0.6
1.0
1.4
400
150
250
50
350
Dropout Voltage


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