LTC7151S datasheet(5/44 Pages) AD

5 / 44 page

Data Sheet

LT83203/LT83205

analog.com

Rev. B

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

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

160

240

Output Voltage Line

Regulation5

ΔVOUT(LINE)

VIN = 4V to 18V, TA = +25°C

0.001

0.01

%/V

Error Amp Offset5, 6

VEA,OFFSET

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

PNP-Based Input Pair

–2

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

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

2800

V/V

VC Source Current6

IVC-SRC

VC = 1.2V, VSET = 1V, VIN = 12V, PNP-

Based Input Pair

330

μA

VC = 1.2V, VSET = 5V, VIN = 6V, NPN-

Based Input Pair

330

VC Sink Current6

IVC-SNK

VC = 1.2V, VSET = 1V, VIN = 12V, PNP-

Based Input Pair

330

μA

VC = 1.2V, VSET = 5V, VIN = 6V, NPN-

Based Input Pair

330

VC Pin to Switch Current

Gain

LT83203

5.2

A/V

LT83205

7.2

VC Clamp Voltage

VC_CLAMP

2.2

Minimum On-Time

tON(MIN)

ILOAD = 1A

Minimum Off-Time

tOFF(MIN)

ILOAD = 1A

Top Power N-Channel

MOSFET Current Limit

IPEAK-LIMIT

LT83203

5.4

6.6

LT83205

8.5

Bottom Power N-

Channel MOSFET

Current Limit

IVALLEY-LIMIT

LT83203

3.6

4.5

5.4

LT83205

7.5

SW Leakage Current

ISW_LKG

VIN = 18V, VSW = 0V, 18V, TA = +25°C

–10

μA

Power MOSFET

On-Resistance

Main Switch (Top)

RDS-ONH

108

mΩ

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