LTC7813 datasheet(11/59 Pages) AD

11 / 59 page

Data Sheet

LT8210-1

analog.com

Rev. A

11 of 59

(Specifications are at TA = 25°C. VIN = 12V, VINP = 12V, VEN/UVLO = 3.3V, unless otherwise noted.)

PARAMETER

SYMBOL

CONDITIONS/COMMENTS

MIN

TYP

MAX

UNITS

Switching Frequency

Range

FRNG

Set/Synchronized

-40°C ≤ TJ ≤ 125°C

400

kHz

Switching Frequency

FSW

RT = 110k

-40°C ≤ TJ ≤ 125°C

100

108

kHz

RT = 39.2k

-40°C ≤ TJ ≤ 125°C

190

200

210

RT = 16.9k

-40°C ≤ TJ ≤ 125°C

380

400

420

SYNC/SPRD Input Low

Level

VSYNC_LL

-40°C ≤ TJ ≤ 125°C

0.8

SYNC/SPRD Input High

Level

VSYNC_HL

-40°C ≤ TJ ≤ 125°C

1.17

Spread-Spectrum Max

Frequency (% of fSW)

VSYNC/SPRD= 3.3V

112.5

Spread-Spectrum Min

Frequency (% of fSW)

VSYNC/SPRD = 3.3V

100

Logic Inputs/Outputs

MODE1, 2 Input Low

Level

VLL_MODE1

VLL_MODE2

-40°C ≤ TJ ≤ 125°C

0.8

MODE1, 2 Input High

Level

VHL_MODE1

VHL_MODE2

-40°C ≤ TJ ≤ 125°C

1.17

MODE1, 2 Leakage

Current

IL_MODE1,2

VMODE1,2 = 6 V

0.01

μA

PWGD Output Low

Voltage

VPWGD_LV

IPWGD = 1mA

-40°C ≤ TJ ≤ 125°C

0.07

0.2

PWGD Trip Level

VFB1 Falling

-40°C ≤ TJ ≤ 125°C

–13

–10

–8

VFB2 Rising

-40°C ≤ TJ ≤ 125°C

7.5

PWGD Anti-Glitch

Delay

VPWGDRising or

Falling

-40°C ≤ TJ ≤ 125°C

µs

PWGD Leakage

Current

ILEAK_PWGD

VPWGD = 40V

0.01

μA

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