Lt3092 lauchologie der lauchigkeit PDF

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Description

LT3092 200mA 2-Terminal Programmable Current Source DESCRIPTION

FEATURES n n n n n n n n n n n

n

Programmable 2-Terminal Current Source Maximum Output Current: 200mA Wide Input Voltage Range: 1.2V to 40V Input/Output Capacitors Not Required Resistor Ratio Sets Output Current Initial Set Pin Current Accuracy: 1% Reverse-Voltage Protection Reverse-Current Protection 12V

*CURRENT FOLDBACK CIRCUIT LIMITS THE LT3092 POWER DISSIPATION

3092 T A16

More Efficient Current Source 0.22µF VIN

+ –

VIN

BOOST

36V

33µH

SW SHDN

BIAS

C3 47µF

LT3470A

100Ω

10µA

ZVP3306F

FB GND

IN

LT3092

1nF

+ –

1k

SET

OUT 1Ω 20k

3092 T A17

IOUT

Rev. D

For more information www.analog.com

19

LT3092 PACKAGE DESCRIPTION DD Package 8-Lead Plastic DFN (3mm × 3mm) (Reference LTC DWG # 05-08-1698 Rev C)

0.70 ±0.05

3.5 ±0.05 1.65 ±0.05 2.10 ±0.05 (2 SIDES) PACKAGE OUTLINE 0.25 ±0.05 0.50 BSC 2.38 ±0.05 RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS APPLY SOLDER MASK TO AREAS THAT ARE NOT SOLDERED

3.00 ±0.10 (4 SIDES)

R = 0.125 TYP 5

0.40 ±0.10 8

1.65 ±0.10 (2 SIDES)

PIN 1 TOP MARK (NOTE 6) (DD8) DFN 0509 REV C

0.200 REF

0.75 ±0.05

4 0.25 ±0.05

1 0.50 BSC

2.38 ±0.10 0.00 – 0.05

BOTTOM VIEW—EXPOSED PAD

NOTE: 1. DRAWING TO BE MADE A JEDEC PACKAGE OUTLINE M0-229 VARIATION OF (WEED-1) 2. DRAWING NOT TO SCALE 3. ALL DIMENSIONS ARE IN MILLIMETERS 4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE 5. EXPOSED PAD SHALL BE SOLDER PLATED 6. SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION ON TOP AND BOTTOM OF PACKAGE

Rev. D

20

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LT3092 PACKAGE DESCRIPTION ST Package 3-Lead Plastic SOT-223 (Reference LTC DWG # 05-08-1630)

.248 – .264 (6.30 – 6.71)

.129 MAX

.114 – .124 (2.90 – 3.15)

.059 MAX

.264 – .287 (6.70 – 7.30)

.248 BSC

.130 – .146 (3.30 – 3.71)

.039 MAX

.059 MAX

.181 MAX .033 – .041 (0.84 – 1.04)

.0905 (2.30) BSC

RECOMMENDED SOLDER PAD LAYOUT

10° – 16°

.010 – .014 (0.25 – 0.36)

10° MAX

.071 (1.80) MAX

.090 BSC

10° – 16° .024 – .033 (0.60 – 0.84) .181 (4.60) BSC

.012 (0.31) MIN

.0008 – .0040 (0.0203 – 0.1016) ST 3 (SOT -233) 0502

Rev. D

For more information www.analog.com

21

LT3092 PACKAGE DESCRIPTION TS8 Package 8-Lead Plastic TSOT-23 (Reference LTC DWG # 05-08-1637 Rev A)

0.40 MAX

2.90 BSC (NOTE 4)

0.65 REF

1.22 REF

1.4 MIN

3.85 MAX 2.62 REF

2.80 BSC

1.50 – 1.75 (NOTE 4) PIN ONE ID

RECOMMENDED SOLDER PAD LAYOUT PER IPC CALCULATOR

0.22 – 0.36 8 PLCS (NOTE 3)

0.65 BSC

0.80 – 0.90 0.20 BSC

0.01 – 0.10

1.00 MAX DATUM ‘A’

0.30 – 0.50 REF 0.09 – 0.20 (NOTE 3)

1.95 BSC

T S8 T SOT-23 0710 REV A

NOTE: 1. DIMENSIONS ARE IN MILLIMETERS 2. DRAWING NOT TO SCALE 3. DIMENSIONS ARE INCLUSIVE OF PLATING 4. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR 5. MOLD FLASH SHALL NOT EXCEED 0.254mm 6. JEDEC PACKAGE REFERENCE IS MO-193

Rev. D

22

For more information www.analog.com

LT3092 REVISION HISTORY

(Revision history begins at Rev B)

REV

DATE

DESCRIPTION

B

12/09

Update Order Information.

C

02/17

Update Dropout Voltage graphs. Amended Application Circuit connection.

D

08/20

PAGE NUMBER 2 6 1, 8, 9, 10, 11, 13, 14, 16, 17, 18, 19, 24

Added AEC-Q100 Qualified for Automotive Applications to Features.

1

Added #W options for 3-Lead SOT.

3

Removed lead finished options. Changed current source mode IOUT formula.

3 9

Rev. D

Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

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LT3092 TYPICAL APPLICATIONS USB LED Driver

Current Limiter for Remote Power VIN

USB LT3092

IN

IN

LT3092

10µA 10µA

+ –

+ – SET SET

OUT

OUT

20k

100k ADJUST LIMIT

1Ω

4.99Ω LDO

VOUT

200mA LED 3092 T A18 3092 T A19

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