LT3045 datasheet(5/44 Pages) AD

5 / 44 page

Data Sheet

LT83401/LT83402

analog.com

Rev. 0

5 of 44

(TJ = -40°C to +150°C, unless otherwise noted. Typical values are at TA = +25°C. All voltages are referenced to GND,

unless otherwise noted.)

PARAMETER

SYMBOL

CONDITIONS/COMMENTS

MIN

TYP

MAX

UNITS

PGFB Lower Threshold

Hysteresis

VPGL_HYS

PGFB Lower Threshold

(Start-Up Only)

VPGL_STARTUP VPGFB rising

480

487.5

495

PGFB Pin Current

IPGFB

VIN= 12V, VEN/UVLO = 2V, VPGFB = 0.5V

Power Good (PG)

Leakage

IPG_LKG

VPG = 3.3V, TA= +25°C

-40

+40

PG Pull-Down

Resistance

RPG

VPG = 0.5V

380

1200

SYNC/MODE Threshold

VIL

SYNC/MODE DC and clock low- level

voltage

0.7

VIH

SYNC/MODE DC and clock high- level

voltage

1.5

OUTS Pin Output

Current

IOUTS

VOUTS = 1V, TA = +25°C

110

170

230

Output Voltage Line

Regulation5

ΔVOUT(LINE)

VIN = 4V to 42V, TA= +25°C

0.001

0.01

%/V

Error Amp Offset5,6

VEA,OFFSET

VC = 1.2V, VSET = 3V, VIN = 12V,

positive-negative-positive (PNP)–

based input pair

-2

VC = 1.2V, VSET = 5V, VIN = 5.7V,

negative-positive-negative (NPN)–

based input pair

-2

Error Amp

Transconductance6

gm(EA)

VC = 1.2V, VSET = 3V, VIN = 12V,

PNP–based input pair, TA = +25°C

9.5

14.5

gm(EA)

VC = 1.2V, VSET = 5V, VIN= 5.7V,

NPN-based input pair, TA = +25°C

8.3

10.5

12.7

Error Amp Gain

VC = 1.2V, VSET = 1V, VIN = 6V, LT83401

2400

V/V

VC = 1.2V, VSET = 1V, VIN = 6V, LT83402

2000

VC Source Current6

IVC-SRC

VC = 1.2V, VSET = 3V, VIN = 12V, PNP–

based input pair

340

μA

VC = 1.2V, VSET = 3V, VIN = 12V, NPN–

based input pair

340

VC Sink Current6

IVC-SNK

VC = 1.2V, VSET = 3V, VIN = 12V, PNP-

based input pair

340

μA

VC = 1.2V, VSET = 3V, VIN = 12V, NPN-

based input pair

340

VC Pin-to-Switch Current

Gain

LT83401

2.3

A/V

LT83402

3.6

VC Clamp Voltage

VC_CLAMP

Minimum On-Time

tON(MIN)

ILOAD = 1A

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