LTC3613 datasheet(3/35 Pages) AD

3 / 35 page

Data Sheet

LT7200S

analog.com

Rev 0

3 of 35

SPECIFICATIONS

Table 1. Electrical Characteristics

(Specifications are at TA = 25°C. VIN = 12V, unless otherwise noted)

PARAMETER

SYMBOL

CONDITIONS/COMMENTS

MIN

TYP

MAX

UNITS

SVIN Operating Voltage

SVIN

-40°C ≤ TJ ≤ 150°C

2.9

PVIN Operating Voltage

PVIN

1.5

VOUT Operating Voltage

VOUT

RRT = 100kΩ

0.5

0.9VIN

Internal VCC Voltage

VINTVCC

SVIN > 5.5V

4.85

4.93

5.02

VIN Quiescent Current (2)

Active, Single Channel

IQ(ACT,1CH)

RRT = 100kΩ, MODE/SYNC = 0V,

VRUN1 = 2V, VRUN2,3,4= 0V

VIN Quiescent Current (2)

Active, All Channels

IQ(ACT,4CH)

RRT = 100kΩ, MODE/SYNC = 0V,

VRUN1,2,3,4= 2V

VIN Quiescent Current (2)

Shutdown Mode

IQ(SHDN)

RRT = 100kΩ

VRUN1,2,3,4= 0V

µA

Feedback Reference

Voltage (3)

VFB

ITH = 1V

-40°C ≤ TJ ≤ 150°C

0.496

0.5

0.504

Feedback Voltage Line

and Load Regulation (3)

ΔVFB(LINE+LOAD) -40°C ≤ TJ ≤ 150°C

-0.1

0.07

0.2

Feedback Pin Input

Current

IFB

±50

Error Amplifier

Transconductance

Gm(EA)

ITH = 1V

0.9

1.05

1.2

ITH Internal

Compensation

Threshold

VITH-INT

VINTVCC

- 0.3

Minimum On-Time

tON(MIN)

-40°C ≤ TJ ≤ 150°C

Minimum Off-Time

tOFF(MIN)

Positive Inductor

Valley Current Limit

ILIM-POS

FB = 0.58V

-40°C ≤ TJ ≤ 150°C

Negative Inductor Valley

Current Limit

ILIM-NEG

FB = 0.42V

-40°C ≤ TJ ≤ 150°C

7.9

-6.8

-5.8

Current Limit at

Different ITH Voltage

ILIM-ITH

ITH = 1.3V

2.5

3.5

ITH = 1V

-0.5

0.5

ITH = 0.7V

-3.5

-3

-2.5

Top Power NMOS

On-Resistance

RTOP

INTVCC = 5V

mΩ

Bottom Power NMOS

On-Resistance

RBOT

INTVCC = 5V

mΩ

Top Switch Leakage

ISW(TOP)

VIN = 18V, VSW = 0V

0.05

0.5

µA

Bottom Switch Leakage

ISW(BOTTOM)

VIN = 18V, VSW = 18V

0.1

1.5

µA

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