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LT1963

Description
1.5A, low noise, fast transient response ldo regulators
File Size239KB,16 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
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LT1963 Overview

1.5A, low noise, fast transient response ldo regulators

LT1963 Series
1.5A, Low Noise,
Fast Transient Response
LDO Regulators
FEATURES
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DESCRIPTIO
Optimized for Fast Transient Response
Output Current: 1.5A
Dropout Voltage: 340mV
Low Noise: 40
µ
V
RMS
(10Hz to 100kHz)
1mA Quiescent Current
No Protection Diodes Needed
Controlled Quiescent Current in Dropout
Fixed Output Voltages: 1.5V, 1.8V, 2.5V, 3.3V
Adjustable Output from 1.21V to 20V
< 1µA Quiescent Current in Shutdown
Stable with 10µF Output Capacitor
Reverse Battery Protection
No Reverse Current
Thermal Limiting
APPLICATIO S
s
s
3.3V to 2.5V Logic Power Supplies
Post Regulator for Switching Supplies
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
< 1µA 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
10µF. Internal protection circuitry includes reverse battery
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.
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATION
Dropout Voltage
400
3.3V to 2.5V Regulator
DROPOUT VOLTAGE (mV)
350
300
250
200
150
100
50
0
0
0.2
0.4 0.6 0.8 1.0 1.2
OUTPUT CURRENT (A)
1.4 1.6
1963 TA02
+
V
IN
> 3V
10µF
IN
OUT
LT1963-2.5
+
10µF
2.5V
1.5A
SHDN
SENSE
GND
1963 TA01
U
1963fa
U
U
1

LT1963 Related Products

LT1963 LT1963EQ-1.8 LT1963EQ LT1963EQ-1.5
Description 1.5A, low noise, fast transient response ldo regulators 1.5A, low noise, fast transient response ldo regulators 1.5A, low noise, fast transient response ldo regulators 1.5A, low noise, fast transient response ldo regulators
Brand Name - Linear Technology Linear Technology Linear Technology
Is it Rohs certified? - incompatible incompatible incompatible
Maker - Linear ( ADI ) Linear ( ADI ) Linear ( ADI )
Parts packaging code - D2PAK D2PAK D2PAK
package instruction - TO-263, SMSIP5H,.6,67TB TO-263, SMSIP5H,.6,67TB TO-263, SMSIP5H,.6,67TB
Contacts - 5 5 5
Manufacturer packaging code - Q Q Q
Reach Compliance Code - not_compliant not_compliant not_compliant
ECCN code - EAR99 EAR99 EAR99
Adjustability - FIXED ADJUSTABLE FIXED
Maximum drop-back voltage 1 - 0.55 V 0.55 V 0.55 V
Nominal dropback voltage 1 - 0.34 V 0.34 V 0.34 V
JESD-30 code - R-PSSO-G5 R-PSSO-G5 R-PSSO-G5
JESD-609 code - e0 e0 e0
length - 10.2235 mm 10.2235 mm 10.2235 mm
Humidity sensitivity level - 1 1 1
Number of functions - 1 1 1
Output times - 1 1 1
Number of terminals - 5 5 5
Working temperatureTJ-Max - 125 °C 125 °C 125 °C
Working temperature TJ-Min - -40 °C -40 °C -40 °C
Maximum output current 1 - 1.5 A 1.5 A 1.5 A
Maximum output voltage 1 - 1.854 V 20 V 1.545 V
Minimum output voltage 1 - 1.737 V 1.21 V 1.447 V
Package body material - PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code - TO-263 TO-263 TO-263
Encapsulate equivalent code - SMSIP5H,.6,67TB SMSIP5H,.6,67TB SMSIP5H,.6,67TB
Package shape - RECTANGULAR RECTANGULAR RECTANGULAR
Package form - SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE
Peak Reflow Temperature (Celsius) - NOT SPECIFIED 245 245
Certification status - Not Qualified Not Qualified Not Qualified
Regulator type - FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR ADJUSTABLE POSITIVE SINGLE OUTPUT LDO REGULATOR FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR
Maximum seat height - 4.877 mm 4.877 mm 4.877 mm
surface mount - YES YES YES
technology - BIPOLAR BIPOLAR BIPOLAR
Terminal surface - Tin/Lead (Sn/Pb) - with Nickel (Ni) barrier Tin/Lead (Sn/Pb) - with Nickel (Ni) barrier Tin/Lead (Sn/Pb) - with Nickel (Ni) barrier
Terminal form - GULL WING GULL WING GULL WING
Terminal pitch - 1.7 mm 1.7 mm 1.7 mm
Terminal location - SINGLE SINGLE SINGLE
Maximum time at peak reflow temperature - NOT SPECIFIED 40 40
width - 8.89 mm 8.89 mm 8.89 mm
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