LT1963EST-1.5#PBF Linear Technology, LT1963EST-1.5#PBF Datasheet

IC REG LDO 1.5V 1.5A LN SOT223-3

LT1963EST-1.5#PBF

Manufacturer Part Number
LT1963EST-1.5#PBF
Description
IC REG LDO 1.5V 1.5A LN SOT223-3
Manufacturer
Linear Technology

Specifications of LT1963EST-1.5#PBF

Regulator Topology
Positive Fixed
Voltage - Output
1.5V
Voltage - Input
2.1 ~ 20 V
Voltage - Dropout (typical)
0.34V @ 1.5A
Number Of Regulators
1
Current - Output
1.5A
Current - Limit (min)
1.6A
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
SOT-223 (3 leads + Tab), SC-73, TO-261
Primary Input Voltage
2.5V
Output Voltage Fixed
1.5V
Dropout Voltage Vdo
340mV
No. Of Pins
3
Output Current
1.5A
Voltage Regulator Case Style
SOT-223
Operating Temperature Range
-40°C To
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LT1963EST-1.5#PBFLT1963EST-1.5
Manufacturer:
LINEAR
Quantity:
20 000
Company:
Part Number:
LT1963EST-1.5#PBFLT1963EST-1.5#TRPBF
Manufacturer:
LINEAR/凌特
Quantity:
20 000
APPLICATIONS
TYPICAL APPLICATION
FEATURES
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
V
IN
Optimized for Fast Transient Response
Output Current: 1.5A
Dropout Voltage: 340mV
Low Noise: 40μV
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*
Stable with Ceramic Capacitors*
Reverse Battery Protection
No Reverse Current
Thermal Limiting
5-Lead TO-220, DD, 3-Lead SOT-223 and
8-Lead SO Packages
3.3V to 2.5V Logic Power Supplies
Post Regulator for Switching Supplies
> 3V
+
10μF*
3.3V to 2.5V Regulator
RMS
IN
SHDN
LT1963A-2.5
(10Hz to 100kHz)
GND
SENSE
1963A TA01
OUT
*TANTALUM,
CERAMIC OR
ALUMINUM ELECTROLYTIC
+
10μF*
2.5V
1.5A
DESCRIPTION
The LT
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 regula-
tors. In addition to fast transient response, the LT1963A
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 LT1963A
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 fi xed output
voltages of 1.5V, 1.8V, 2.5V, 3.3V and as an adjustable
device with a 1.21V reference voltage. The LT1963A regula-
tors are available in 5-lead TO-220, DD, 3-lead SOT-223,
8-lead SO and 16-lead TSSOP packages.
All other trademarks are the property of their respective owners. Protected by U.S. Patents,
including 6118263, 6144250.
*See Applications Information Section.
, LTC and LT are registered trademarks of Linear Technology Corporation.
Fast Transient Response
®
1963A series are low dropout regulators optimized
400
350
300
250
200
150
100
50
0
0
0.2
0.4
Dropout Voltage
1.5A, Low Noise,
OUTPUT CURRENT (A)
LDO Regulators
0.6
LT1963A Series
0.8
1.0
1.2
1.4
1963A TA02
1.6
1963afd
1

Related parts for LT1963EST-1.5#PBF

LT1963EST-1.5#PBF Summary of contents

Page 1

... The LT1963A regula- tors are available in 5-lead TO-220, DD, 3-lead SOT-223, 8-lead SO and 16-lead TSSOP packages. , LTC and LT are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents, including 6118263, 6144250. ...

Page 2

LT1963A Series ABSOLUTE MAXIMUM RATINGS (Note 1) IN Pin Voltage ........................................................ ± 20V OUT Pin Voltage ......................................................±20V Input to Output Differential Voltage (Note 2) ...........±20V SENSE Pin Voltage ............................................... ± 20V ADJ Pin Voltage ...................................................... ±7V SHDN Pin Voltage ................................................. ...

Page 3

ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL LT1963AEQ#PBF LT1963AEQ#TRPBF LT1963AIQ#PBF LT1963AIQ#TRPBF LT1963AMPQ#PBF LT1963AMPQ#TRPBF LT1963AEQ-1.5#PBF LT1963AEQ-1.5#TRPBF LT1963AEQ-1.8#PBF LT1963AEQ-1.8#TRPBF LT1963AEQ-2.5#PBF LT1963AEQ-2.5#TRPBF LT1963AEQ-3.3#PBF LT1963AEQ-3.3#TRPBF LT1963AET#PBF LT1963AET#TRPBF LT1963AIT#PBF LT1963AIT#TRPBF LT1963AET-1.5#PBF LT1963AET-1.5#TRPBF LT1963AET-1.8#PBF LT1963AET-1.8#TRPBF LT1963AET-2.5#PBF LT1963AET-2.5#TRPBF LT1963AET-3.3#PBF LT1963AET-3.3#TRPBF LT1963AEFE#PBF LT1963AEFE#TRPBF LT1963AIFE#PBF LT1963AIFE#TRPBF LT1963AEFE-1.5#PBF LT1963AEFE-1.5#TRPBF ...

Page 4

LT1963A Series ORDER INFORMATION LEAD BASED FINISH TAPE AND REEL LT1963AET-1.5 LT1963AET-1.5#TR LT1963AET-1.8 LT1963AET-1.8#TR LT1963AET-2.5 LT1963AET-2.5#TR LT1963AET-3.3 LT1963AET-3.3#TR LT1963AEFE LT1963AEFE#TR LT1963AIFE LT1963AIFE#TR LT1963AEFE-1.5 LT1963AEFE-1.5#TR LT1963AEFE-1.8 LT1963AEFE-1.8#TR LT1963AEFE-2.5 LT1963AEFE-2.5#TR LT1963AEFE-3.3 LT1963AEFE-3.3#TR LT1963AEST-1.5 LT1963AEST-1.5#TR LT1963AEST-1.8 LT1963AEST-1.8#TR LT1963AEST-2.5 LT1963AEST-2.5#TR LT1963AEST-3.3 LT1963AEST-3.3#TR LT1963AES8 LT1963AES8#TR ...

Page 5

ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T PARAMETER CONDITIONS Minimum Input Voltage (Notes 4,12) I LOAD I LOAD Regulated Output Voltage (Note 5) LT1963A-1.5 LT1963A-1.8 LT1963A-2.5 LT1963A-3.3 ADJ Pin Voltage (Notes 4, 5) LT1963A Line Regulation LT1963A-1.5 ...

Page 6

LT1963A Series ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T PARAMETER CONDITIONS Ripple Rejection RIPPLE Current Limit Input Reverse Leakage Current (Note 13 Packages ST Package Reverse Output ...

Page 7

TYPICAL PERFORMANCE CHARACTERISTICS Typical Dropout Voltage 500 450 400 350 T = 125°C J 300 250 T = 25°C 200 J 150 100 0.2 0.4 0.6 0.8 1.0 1.2 1.4 OUTPUT CURRENT (A) 1963A G01 Quiescent Current ...

Page 8

LT1963A Series TYPICAL PERFORMANCE CHARACTERISTICS LT1963A-1.5 Quiescent Current 25° ∞ SHDN ...

Page 9

TYPICAL PERFORMANCE CHARACTERISTICS LT1963A GND Pin Current 25° SHDN IN *FOR V = 1.21V 8 OUT R = 4.33 300mA 12. 100mA* L ...

Page 10

LT1963A Series TYPICAL PERFORMANCE CHARACTERISTICS SHDN Pin Input Current 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0 SHDN PIN VOLTAGE (V) 1963A G24 Current Limit 3.0 ...

Page 11

TYPICAL PERFORMANCE CHARACTERISTICS Ripple Rejection 100μF TANTALUM OUT 30 +10 × 1μF CERAMIC C = 10μF TANTALUM 20 OUT 0.75A +1V + 50mV RIPPLE IN OUT(NOMINAL) ...

Page 12

LT1963A Series TYPICAL PERFORMANCE CHARACTERISTICS LT1963A-3.3 Transient Response 200 3.3μF TANTALUM 150 10μF TANTALUM OUT 100 50 0 –50 –100 0.6 0.4 0 ...

Page 13

PIN FUNCTIONS OUT: Output. The output supplies power to the load. A minimum output capacitor of 10μF is required to prevent oscillations. Larger output capacitors will be required for applications with large transient loads to limit peak voltage transients. See ...

Page 14

LT1963A Series APPLICATIONS INFORMATION The LT1963A series are 1.5A low dropout regulators opti- mized for fast transient response. The devices are capable of supplying 1. dropout voltage of 350mV. The low operating quiescent current (1mA) drops to less ...

Page 15

APPLICATIONS INFORMATION Table 1. Capacitor Minimum ESR V 10μF 22μF OUT 1.2V 20mΩ 15mΩ 1.5V 20mΩ 15mΩ 1.8V 15mΩ 10mΩ 2.5V 5mΩ 5mΩ 3.3V 0mΩ 0mΩ ≥5V 0mΩ 0mΩ Figures 3 through 8 show the effect of ESR on the ...

Page 16

LT1963A Series APPLICATIONS INFORMATION 100 1963A F03 20μs/DIV Figure 100 1963A F04 20μs/DIV Figure 100 1963A F05 20μs/DIV Figure 1.2V OUT I = 500mA ...

Page 17

APPLICATIONS INFORMATION Y5V dielectrics are good for providing high capacitances in a small package, but exhibit strong voltage and temperature coeffi cients as shown in Figures 10 and 11. When used with a 5V regulator, a 10μF Y5V capacitor can ...

Page 18

LT1963A Series APPLICATIONS INFORMATION This resistor should be made using one of the inner layers of the PC board which are well defi ned. The resistiv- ity is determined primarily by the sheet resistance of the copper laminate with no ...

Page 19

APPLICATIONS INFORMATION The following tables list thermal resistance for several different board sizes and copper areas. All measurements were taken in still air on 1/16" FR-4 board with one ounce copper. Table 3. Q Package, 5-Lead DD COPPER AREA TOPSIDE* ...

Page 20

LT1963A Series APPLICATIONS INFORMATION The output of the LT1963A can be pulled below ground without damaging the device. If the input is left open circuit or grounded, the output can be pulled below ground by 20V. For fi xed voltage ...

Page 21

TYPICAL APPLICATIONS L2 10VAC AT 115V 90-140 VAC 10VAC AT 115V 1N4002 “SYNC” 1N4002 TO ALL “+V” + POINTS 22μF SCR Pre-Regulator Provides Effi ciency Over Line Variations L1 500μH 1N4148 + 10000μ 1N4002 +V 2.4k C1A ...

Page 22

LT1963A Series TYPICAL APPLICATIONS V > 3. Paralleling of Regulators for Higher Output Current R1 0.01Ω LT1963A-3.3 IN OUT + C1 100μF SHDN FB GND R2 0.01Ω LT1963A IN OUT SHDN SHDN FB GND 2.2k ...

Page 23

PACKAGE DESCRIPTION .060 .256 (1.524) (6.502) .060 .183 (1.524) (4.648) .075 (1.905) .300 (7.620) BOTTOM VIEW OF DD PAK HATCHED AREA IS SOLDER PLATED COPPER HEAT SINK .067 RECOMMENDED SOLDER PAD LAYOUT NOTE: 1. DIMENSIONS IN INCH/(MILLIMETER) 2. DRAWING NOT ...

Page 24

LT1963A Series PACKAGE DESCRIPTION .050 BSC .245 MIN .030 ± .005 TYP RECOMMENDED SOLDER PAD LAYOUT .010 – .020 (0.254 – 0.508) .008 – .010 (0.203 – 0.254) (0.406 – 1.270) NOTE: 1. DIMENSIONS IN (MILLIMETERS) 2. DRAWING NOT TO ...

Page 25

PACKAGE DESCRIPTION .248 – .264 (6.30 – 6.71) .114 – .124 (2.90 – 3.15) .264 – .287 (6.70 – 7.30) .130 – .146 (3.30 – 3.71) .0905 (2.30) BSC .071 (1.80) MAX .024 – .033 (0.60 – 0.84) ST Package ...

Page 26

LT1963A Series PACKAGE DESCRIPTION .390 – .415 (9.906 – 10.541) .460 – .500 (11.684 – 12.700) .067 BSC .028 – .038 (1.70) (0.711 – 0.965 Package 5-Lead Plastic TO-220 (Standard) (Reference LTC DWG # 05-08-1421) .147 – .155 ...

Page 27

... DIMENSIONS ARE IN 3. DRAWING NOT TO SCALE Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. FE Package 16-Lead Plastic TSSOP (4 ...

Page 28

... MS8 Package 0.34V 30μA, I 3μ 1.8V to 20V 1.2V to 19.5V, IN OUT = 0.15V 120μA, I <3μ 0.30V 40μA, I <1μ 0.30V 60μA, I <1μ 1.2V to 36V, IN set; directly parallelable OUT LT 0708 REV D • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 2005 1963afd ...

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