LM5575-Q1_17 datasheet(6/33 Pages) TI1

tên linh kiện	LM5575-Q1

Giải thích chi tiết về linh kiện	Simple Switcher 75-V, 1.5-A Step-Down Switching Regulator

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LM5575-Q1

SNOSB23C – OCTOBER 2008 – REVISED DECEMBER 2014

www.ti.com

Electrical Characteristics (continued)

Specifications with standard typeface are for TJ = 25°C. VIN = 48V, RT = 32.4 kΩ unless otherwise stated.

(1)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Cycle by Cycle Current Limit Delay

RAMP = 2.5 V

85

ns

SOFT-START

10

µA

SS Current Source

Over full Operating Junction

7

14

Temperature range

OSCILLATOR

200

kHz

Frequency1

Over full Operating Junction

180

220

Temperature range

RT = 11 kΩ

485

kHz

Frequency2

Over full Operating Junction

425

545

Temperature range

SYNC Source Impedance

11

k

Ω

SYNC Sink Impedance

110

Ω

SYNC Threshold (falling)

1.3

V

RT = 11 kΩ

kHz

SYNC Frequency

Over full Operating Junction

550

Temperature range

Over full Operating Junction

15

ns

SYNC Pulse Width Minimum

Temperature range

RAMP GENERATOR

Vin = 60 V, Vout=10 V

550

µA

Ramp Current 1

Over full Operating Junction

467

633

Temperature range

Vin = 10 V, Vout=10 V

50

µA

Ramp Current 2

Over full Operating Junction

36

64

Temperature range

PWM COMPARATOR

500

ns

Forced Off-time

Over full Operating Junction

390

590

Temperature range

Min On-time

80

ns

COMP to PWM Comparator Offset

0.7

V

ERROR AMPLIFIER

Vfb = COMP

1.225

V

Feedback Voltage

Over full Operating Junction

1.205

1.245

Temperature range

FB Bias Current

17

nA

DC Gain

70

dB

Over full Operating Junction

2.5

mA

COMP Sink / Source Current

Temperature range

Unity Gain Bandwidth

3

MHz

DIODE SENSE RESISTANCE

DSENSE

83

m

Ω

THERMAL SHUTDOWN

Tsd

Thermal Shutdown Threshold

180

°C

Thermal Shutdown Hysteresis

25

°C

6

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nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
Texas Instruments	LM5575-Q1	994Kb / 31P	[Old version datasheet] LM5575-Q1 Simple Switcher짰 75-V, 1.5-A Step-Down Switching Regulator

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Mô tả tương tự - LM5575-Q1_17

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