lt1963aes8-trpbf Linear Technology Corporation, lt1963aes8-trpbf Datasheet

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lt1963aes8-trpbf

Manufacturer Part Number
lt1963aes8-trpbf
Description
1.5a, Low Noise, Fast Transient Response Ldo Regulators
Manufacturer
Linear Technology Corporation
Datasheet
FEATURES
TYPICAL
APPLICATIO S
V
IN
Optimized for Fast Transient Response
Output Current: 1.5A
Dropout Voltage: 340mV
Low Noise: 40
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
+
APPLICATION
10µF*
µ
V
U
RMS
3.3V to 2.5V Regulator
IN
SHDN
LT1963A-2.5
(10Hz to 100kHz)
GND
SENSE
1963 TA01
OUT
U
*TANTALUM,
CERAMIC OR
ALUMINUM ELECTROLYTIC
+
10µF*
2.5V
1.5A
DESCRIPTIO
The LT
mized 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
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 fixed
output voltages of 1.5V, 1.8V, 2.5V, 3.3V and as an
adjustable device with a 1.21V reference voltage. The
LT1963A regulators 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 opti-
400
350
300
250
200
150
100
50
0
0
0.2
U
0.4
OUTPUT CURRENT (A)
Dropout Voltage
1.5A, Low Noise,
LDO Regulators
0.6
0.8
LT1963A Series
1.0
1.2
1.4
1963 TA02
1.6
1963afb
1

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lt1963aes8-trpbf Summary of contents

Page 1

... The LT1963A regulators 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

... JA ORDER PART NUMBER ORDER PART NUMBER LT1963AET LT1963AET-1.5 LT1963AET-1.8 LT1963AET-2.5 LT1963AET-3.3 OUT GND IN ORDER PART NUMBER 963A15 LT1963AES8 963A18 LT1963AES8-1.5 963A25 LT1963AES8-1.8 963A33 LT1963AES8-2.5 LT1963AES8-3.3 TOP VIEW GND 1 16 GND OUT OUT *PIN 6 = SENSE FOR LT1963A-1.5/ 17 LT1963A-1.8/LT1963A-2.5/ ...

Page 3

ELECTRICAL CHARACTERISTICS The ● denotes specifications which apply over the full operating temperature range, otherwise specifications are 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 ...

Page 4

LT1963A Series ELECTRICAL CHARACTERISTICS The ● denotes specifications which apply over the full operating temperature range, otherwise specifications are T PARAMETER CONDITIONS Input Reverse Leakage Current (Note 13 Packages V ST Package Reverse Output Current (Note 11) ...

Page 5

W U TYPICAL PERFOR A CE CHARACTERISTICS Quiescent Current 1.4 1.2 LT1963A-1.5/1.8/-2.5/-3.3 1.0 0.8 LT1963A 0.6 0 0.2 = ∞ SHDN IN 0 – ...

Page 6

LT1963A Series W U TYPICAL PERFOR A CE CHARACTERISTICS LT1963A-3.3 Quiescent Current 25° ∞ SHDN ...

Page 7

W U TYPICAL PERFOR A CE CHARACTERISTICS LT1963A-2.5 GND Pin Current 100 T = 25° SHDN IN *FOR V = 2.5V 80 OUT 1.67 1.5A ...

Page 8

LT1963A Series W U TYPICAL PERFOR A CE CHARACTERISTICS Current Limit 3.0 2 25° – 50° 125°C J 1.5 1.0 0.5 ∆V = 100mV OUT ...

Page 9

W U TYPICAL PERFOR A CE CHARACTERISTICS Load Regulation LT1963A-1.8 – 5 LT1963A-2.5 LT1963A-3.3 – +1V IN OUT(NOMINAL) (LT1963A-1.8/-2.5/-3.3) – 2.7V (LT1963A/LT1963A-1.5) IN ∆I = 1mA TO 1.5A L – 20 –50 ...

Page 10

LT1963A Series CTIO S 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 ...

Page 11

U U APPLICATIO S I FOR ATIO The LT1963A series are 1.5A low dropout regulators op- timized for fast transient response. The devices are ca- pable of supplying 1. dropout voltage of 350mV. The low operating quiescent current ...

Page 12

LT1963A Series U U APPLICATIO S I FOR ATIO Table 1. Capacitor Minimum ESR µ µ OUT 1.2V 20mΩ 15mΩ 1.5V 20mΩ 15mΩ 1.8V 15mΩ 10mΩ 2.5V 5mΩ 5mΩ 3.3V 0mΩ 0mΩ ≥ 5V 0mΩ ...

Page 13

U U APPLICATIO S I FOR ATIO 100 20µs/DIV 1963 F03 Figure 100 1963 F04 20µs/DIV Figure 100 1963 F05 20µs/DIV Figure 1.2V OUT ...

Page 14

LT1963A Series U U APPLICATIO S I FOR ATIO used with a 5V regulator, a 10µF Y5V capacitor can exhibit an effective value as low as 1µF to 2µF over the operating temperature range. The X5R and X7R dielectrics result ...

Page 15

U U APPLICATIO S I FOR ATIO Overload Recovery Like many IC power regulators, the LT1963A-X has safe operating area protection. The safe area protection de- creases the current limit as input-to-output voltage in- creases and keeps the power transistor ...

Page 16

LT1963A Series U U APPLICATIO S I FOR ATIO Table 4. SO-8 Package, 8-Lead SO COPPER AREA BOARD AREA (JUNCTION-TO-AMBIENT) TOPSIDE* BACKSIDE 2500mm 2500mm 2500mm 1000mm 2500mm 2500mm 225mm 2500mm 2500mm ...

Page 17

U U APPLICATIO S I FOR ATIO voltage if the output is pulled high, the ADJ pin input current must be limited to less than 5mA. For example, a resistor divider is used to provide a regulated 1.5V output from ...

Page 18

LT1963A Series U TYPICAL APPLICATIO S SCR Pre-Regulator Provides Efficiency Over Line Variations L2 10VAC AT 115V IN 90-140 VAC 10VAC AT 115V IN 1N4002 “SYNC” 1N4002 TO ALL “+V” + POINTS 22µF V > 3. 500µH ...

Page 19

PACKAGE DESCRIPTIO .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 20

LT1963A Series PACKAGE DESCRIPTIO .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 2. DRAWING NOT TO SCALE 3. ...

Page 21

PACKAGE DESCRIPTIO .264 – .287 (6.70 – 7.30) .130 – .146 (3.30 – 3.71) .0905 (2.30) BSC .071 (1.80) MAX U ST Package 3-Lead Plastic SOT-223 (Reference LTC DWG # 05-08-1630) .248 – .264 (6.30 – 6.71) .114 – .124 ...

Page 22

LT1963A Series PACKAGE DESCRIPTIO 0.390 – 0.415 (9.906 – 10.541) 0.460 – 0.500 (11.684 – 12.700) 0.067 BSC 0.028 – 0.038 (1.70) (0.711 – 0.965 Package 5-Lead Plastic TO-220 (Standard) (Reference LTC DWG # 05-08-1421) 0.147 – ...

Page 23

... 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 represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights Package 16-Lead Plastic TSSOP (4 ...

Page 24

... MS8 Package 0.34V 1mA, I <1µ –1.21V 0.34V 30µA, I 3µ 0.15V 120µA, I <3µ 0.30V 40µA, I <1µ 0.30V 60µA, I <1µ 1005 REV B • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 2005 1963afb ...

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