LT3682EDD 查看數據表（PDF） - Linear Technology

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LT3682EDD

1A Micropower Step-Down Switching Regulator

Linear Technology 

LT3682

ABSOLUTE MAXIMUM RATINGS

(Note 1)

VIN, RUN/SS Voltage (Note 2) …….…………….....60V

BOOST Pin Voltage …………………………..…….50V

BOOST Pin Above SW Pin …………………..……..30V

FB, RT, VC Voltage ......................................................5V

SYNC …………………………….………….……. 20V

BD and PG Voltage ..…….………………..……….. 30V

Operating Junction Temperature Range (Notes 3 and 6)

LT3682E ……………….…………... −40°C to 125°C

LT3682I ……………………………. −40°C to 125°C

Storage Temperature Range …………..−65°C to 150°C

PIN CONFIGURATION

TOP VIEW

VC 1

FB 2

PG 3

GND 4

BD 5

BOOST 6

12 VIN

11 SYNC

13

10 RT

9 RUN/SS

8 SW

7 DA

DD PACKAGE

12-LEAD (3mm s 3mm) PLASTIC DFN

θJA = 43°C/W

EXPOSED PAD (PIN 13) IS PGND, MUST BE SOLDERED TO PCB

ORDER INFORMATION

LEAD FREE FINISH

TAPE AND REEL

PART MARKING*

PACKAGE DESCRIPTION

TEMPERATURE RANGE

LT3682EDD#PBF

LT3682EDD#TRPBF

LFDW

12-Lead (3mm × 3mm) Plastic DFN –40°C to 125°C

LT3682IDD#PBF

LT3682IDD#TRPBF

LFDW

12-Lead (3mm × 3mm) Plastic DFN –40°C to 125°C

Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.

Consult LTC Marketing for information on non-standard lead based finish parts.

For more information on lead free part marking, go to: http://www.linear.com/leadfree/

For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/

ELECTRICAL CHARACTERISTICS The l denotes specifications which apply over the full operating temperature

range, otherwise specifications are at TA = 25°C, VIN = 10V, VRUN/SS = 10V, VBD = 3.3V unless otherwise noted. (Note 3)

PARAMETER

CONDITIONS

MIN TYP MAX UNITS

Minimum Operating Voltage

VIN Overvoltage Lockout

Quiescent Current from VIN

Quiescent Current from BD Pin

Minimum BD Pin Voltage

VBD = 3.3V

VBD < 3.0V

VRUN/SS = 0.2V

VRUN/SS = 10V, VBD = 3.3V, Not Switching

VRUN/SS = 10V, VBD = 0V, Not Switching

VRUN/SS = 0.2V

VRUN/SS = 10V, VBD = 3.3V, Not Switching

VRUN/SS = 10V, VBD = 0V, Not Switching

l

3.4

3.6

V

l

3.4

4.3

V

l 36

39

41

V

0.01 0.5

μA

l

35

60

μA

90

160

μA

0.01 0.5

μA

l

55

100

μA

0

5

μA

2.8

3

V

Feedback Voltage

792

800

808

mV

l 780

800

812

mV

FB Pin Bias Current (Note 4)

FB Pin Voltage = 800mV

l

5

80

nA

FB Voltage Line Regulation

3.6V < VIN < 36V

0.001 0.005

%/V

Error Amp gm

Error Amp Voltage Gain

IVC = ±1.5μA

430

μS

1300

V/V

3682f

2

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