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Datasheet> All Categories > Power/power management> The power supply circuit> LT1764AMPQ
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LT1764AMPQ

Description
1.21 V-20 V ADJUSTABLE POSITIVE LDO REGULATOR, 0.66 V DROPOUT, PSSO5
CategoryPower/power management    The power supply circuit   
File Size608KB，20 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
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LT1764AMPQ Overview

1.21 V-20 V ADJUSTABLE POSITIVE LDO REGULATOR, 0.66 V DROPOUT, PSSO5

LT1764AMPQ Parametric

Parameter NameAttribute value
Brand NameLinear Technology
Is it Rohs certified?incompatible
MakerLinear ( ADI )
Parts packaging codeD2PAK
package instructionTO-263, SMSIP5H,.6,67TB
Contacts5
Manufacturer packaging codeQ
Reach Compliance Code_compli
ECCN codeEAR99
AdjustabilityADJUSTABLE
Maximum drop-back voltage 10.66 V
Nominal dropback voltage 10.34 V
Maximum absolute input voltage20 V
JESD-30 codeR-PSSO-G5
JESD-609 codee0
length10.2235 mm
Humidity sensitivity level3
Number of functions1
Output times1
Number of terminals5
Working temperatureTJ-Max125 °C
Operating temperatureTJ-Mi-55 °C
Maximum output current 13 A
Maximum output voltage 120 V
Minimum output voltage 11.21 V
Package body materialPLASTIC/EPOXY
encapsulated codeTO-263
Encapsulate equivalent codeSMSIP5H,.6,67TB
Package shapeRECTANGULAR
Package formSMALL OUTLINE
Peak Reflow Temperature (Celsius)245
Certification statusNot Qualified
Regulator typeADJUSTABLE POSITIVE SINGLE OUTPUT LDO REGULATOR
Maximum seat height4.877 mm
surface mountYES
technologyBIPOLAR
Terminal surfaceTin/Lead (Sn/Pb) - with Nickel (Ni) barrie
Terminal formGULL WING
Terminal pitch1.7 mm
Terminal locationSINGLE
Maximum time at peak reflow temperature40
width8.89 mm

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Download Datasheet
LT1764A Series
3A, Fast Transient
Response, Low Noise,
LDO Regulators
FEATURES
■
■
■
■
■
■
■
■
■
■
■
■
■
■
■
■
DESCRIPTIO
Optimized for Fast Transient Response
Output Current: 3A
Dropout Voltage: 340mV at 3A
Low Noise: 40
µ
V
RMS
(10Hz to 100kHz)
1mA Quiescent Current
Wide Input Voltage Range: 2.7V to 20V
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*
Stable with Ceramic Capacitors*
Reverse Battery Protection
No Reverse Current
Thermal Limiting
APPLICATIO S
■
■
The LT
®
1764A is a low dropout regulator optimized for
fast transient response. The device is capable of supplying
3A 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 LT1764A has very
low output voltage noise which makes the device ideal for
sensitive RF supply applications.
Output voltage range is from 1.21V to 20V. The LT1764A
regulators are stable with output capacitors as low as 10µF.
Internal protection circuitry includes reverse battery pro-
tection, current limiting, thermal limiting and reverse cur-
rent protection. The device is 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 LT1764A regu-
lators are available in 5-lead TO-220 and DD packages, and
16-lead FE packages.
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
*See Applications Information Section.
3.3V to 2.5V Logic Power Supply
Post Regulator for Switching Supplies
TYPICAL APPLICATIO
400
3.3V
IN
to 2.5V
OUT
Regulator
DROPOUT VOLTAGE (mV)
2.5V
3A
10µF*
LT1764A-2.5
SHDN SENSE
GND
1764 TA01
350
300
250
200
150
100
50
0
0
0.5
1.0
1.5
2.0
LOAD CURRENT (A)
2.5
3.0
1764 TA02
+
V
IN
> 3V
10µF*
IN
OUT
+
*TANTALUM,
CERAMIC OR
ALUMINUM ELECTROLYTIC
U
Dropout Voltage
1764afb
U
U
1

LT1764AMPQ Related Products

LT1764AMPQ LT1764AEQ-25 LT1764AEFE LT1764AEFE-1.5 LT1764AEFE-3.3 LT1764AEQ-2.5 LT1764AEQ-3.3 LT1764AET-1.5 LT1764AET-2.5 LT1764AET-3.3
Description 1.21 V-20 V ADJUSTABLE POSITIVE LDO REGULATOR, 0.66 V DROPOUT, PSSO5 1.21 V-20 V ADJUSTABLE POSITIVE LDO REGULATOR, 0.66 V DROPOUT, PDSO16 1.21 V-20 V ADJUSTABLE POSITIVE LDO REGULATOR, 0.66 V DROPOUT, PDSO16 1.21 V-20 V ADJUSTABLE POSITIVE LDO REGULATOR, 0.66 V DROPOUT, PDSO16 3.3 V FIXED POSITIVE LDO REGULATOR, 0.66 V DROPOUT, PDSO16 2.5 V FIXED POSITIVE LDO REGULATOR, 0.66 V DROPOUT, PSSO5 3.3 V FIXED POSITIVE LDO REGULATOR, 0.66 V DROPOUT, PSSO5 1.21 V-20 V ADJUSTABLE POSITIVE LDO REGULATOR, 0.66 V DROPOUT, PDSO16 2.5 V FIXED POSITIVE LDO REGULATOR, 0.66 V DROPOUT, PZFM5 3.3 V FIXED POSITIVE LDO REGULATOR, 0.66 V DROPOUT, PZFM5
Number of functions 1 1 1 1 1 1 1 1 1 1
Number of terminals 5 16 16 16 16 5 5 5 5 5
surface mount YES Yes YES YES YES YES YES NO NO NO
Terminal form GULL WING GULL WING GULL WING GULL WING GULL WING GULL WING GULL WING THROUGH-HOLE THROUGH-HOLE THROUGH-HOLE
Terminal location SINGLE DUAL DUAL DUAL DUAL SINGLE SINGLE ZIG-ZAG ZIG-ZAG ZIG-ZAG
Brand Name Linear Technology - Linear Technology Linear Technology Linear Technology Linear Technology Linear Technology Linear Technology Linear Technology Linear Technology
Is it Rohs certified? incompatible - incompatible incompatible incompatible incompatible incompatible incompatible incompatible incompatible
Maker Linear ( ADI ) - - Linear ( ADI ) Linear ( ADI ) - - Linear ( ADI ) Linear ( ADI ) Linear ( ADI )
Parts packaging code D2PAK - TSSOP TSSOP TSSOP D2PAK D2PAK TO-220 TO-220 TO-220
package instruction TO-263, SMSIP5H,.6,67TB - 4.40 MM, PLASTIC, TSSOP-16 HTSSOP, TSSOP16,.25 HTSSOP, TSSOP16,.25 TO-263, SMSIP5H,.6,67TB TO-263, SMSIP5H,.6,67TB TO-220, ZIP5,.15,.2,67TB TO-220, ZIP5,.15,.2,67TB TO-220, ZIP5,.15,.2,67TB
Contacts 5 - 16 16 16 5 5 5 5 5
Manufacturer packaging code Q - FE FE FE Q Q T T T
Reach Compliance Code _compli - _compli not_compliant _compli _compli _compli not_compliant not_compliant not_compliant
ECCN code EAR99 - EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99
Adjustability ADJUSTABLE - ADJUSTABLE FIXED FIXED FIXED FIXED FIXED FIXED FIXED
Maximum drop-back voltage 1 0.66 V - 0.66 V 0.66 V 0.66 V 0.66 V 0.66 V 0.66 V 0.66 V 0.66 V
Nominal dropback voltage 1 0.34 V - 0.34 V 0.34 V 0.34 V 0.34 V 0.34 V 0.34 V 0.34 V 0.34 V
Maximum absolute input voltage 20 V - 20 V 20 V 20 V 20 V 20 V 20 V 20 V 20 V
JESD-30 code R-PSSO-G5 - R-PDSO-G16 R-PDSO-G16 R-PDSO-G16 R-PSSO-G5 R-PSSO-G5 R-PZFM-T5 R-PZFM-T5 R-PZFM-T5
JESD-609 code e0 - e0 e0 e0 e0 e0 e0 e0 e0
length 10.2235 mm - 5 mm 5 mm 5 mm 10.2235 mm 10.2235 mm 10.2235 mm 10.2235 mm 10.2235 mm
Humidity sensitivity level 3 - 1 1 1 1 1 1 1 1
Output times 1 - 1 1 1 1 1 1 1 1
Working temperatureTJ-Max 125 °C - 125 °C 125 °C 125 °C 125 °C 125 °C 125 °C 125 °C 125 °C
Maximum output current 1 3 A - 3 A 3 A 3 A 3 A 3 A 3 A 3 A 3 A
Maximum output voltage 1 20 V - 20 V 1.545 V 3.4 V 2.575 V 3.4 V 1.545 V 2.575 V 3.4 V
Minimum output voltage 1 1.21 V - 1.21 V 1.447 V 3.183 V 2.412 V 3.183 V 1.447 V 2.412 V 3.183 V
Package body material PLASTIC/EPOXY - PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code TO-263 - HTSSOP HTSSOP HTSSOP TO-263 TO-263 TO-220 TO-220 TO-220
Encapsulate equivalent code SMSIP5H,.6,67TB - TSSOP16,.25 TSSOP16,.25 TSSOP16,.25 SMSIP5H,.6,67TB SMSIP5H,.6,67TB ZIP5,.15,.2,67TB ZIP5,.15,.2,67TB ZIP5,.15,.2,67TB
Package shape RECTANGULAR - RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR
Package form SMALL OUTLINE - SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH SMALL OUTLINE SMALL OUTLINE FLANGE MOUNT FLANGE MOUNT FLANGE MOUNT
Peak Reflow Temperature (Celsius) 245 - 235 235 235 235 235 NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED
Certification status Not Qualified - Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified
Regulator type ADJUSTABLE POSITIVE SINGLE OUTPUT LDO REGULATOR - ADJUSTABLE POSITIVE SINGLE OUTPUT LDO REGULATOR FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR
Maximum seat height 4.877 mm - 1.1 mm 1.1 mm 1.1 mm 4.877 mm 4.877 mm 4.572 mm 4.572 mm 4.572 mm
technology BIPOLAR - BIPOLAR BIPOLAR BIPOLAR BIPOLAR BIPOLAR BIPOLAR BIPOLAR BIPOLAR
Terminal surface Tin/Lead (Sn/Pb) - with Nickel (Ni) barrie - Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) - with Nickel (Ni) barrie Tin/Lead (Sn/Pb) - with Nickel (Ni) barrie 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 pitch 1.7 mm - 0.65 mm 0.65 mm 0.65 mm 1.7 mm 1.7 mm 1.7 mm 1.7 mm 1.7 mm
Maximum time at peak reflow temperature 40 - 20 20 20 20 20 NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED
width 8.89 mm - 4.4 mm 4.4 mm 4.4 mm 8.89 mm 8.89 mm 8.89 mm 8.89 mm 8.89 mm
Maximum input voltage - - - 20 V 20 V 20 V 20 V 20 V 20 V 20 V
Minimum input voltage - - - 2.7 V 4.3 V 3.5 V 4.3 V 2.7 V 3.5 V 4.3 V
Maximum grid adjustment rate - - - 0.01% 0.01% 0.01% 0.01% 0.01% 0.01% 0.01%
Maximum load regulation - - - 0.023% 0.04% 0.03% 0.04% 0.023% 0.03% 0.04%
Nominal output voltage 1 - - - 1.5 V 3.3 V 2.5 V 3.3 V 1.5 V 2.5 V 3.3 V
Maximum voltage tolerance - - - 3.53% 3.54% 3.52% 3.54% 3.53% 3.52% 3.54%

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