LT3045 datasheet(5/62 Pages) AD

5 / 62 page

Data Sheet

LT3074

analog.com

Rev 0.

5 of 62

(All typical specifications are at TJ(junction temperature). = 25°C and all min. and max. specifications are across

the entire operating temperature range, unless otherwise noted. COUT = 22µF, CSETCAP = 4.7µF, CBIASAF = 2.2µF,

and CBIASDF = 0.47µF, unless otherwise noted.)

PARAMETER

SYMBOL

CONDITIONS/COMMENTS

MIN

TYP

MAX

UNITS

BIAS Pin Current

IBIAS

VIN = 1.4V, VOUT =

1.2V, VBIAS = 2.5V

IOUT = 10mA

4.7

BIAS Pin Current

IBIAS

VIN = 1.4V, VOUT =

1.2V, VBIAS = 2.5V

IOUT = 3A

5.7

BIAS Pin Current in

Dropout 2

IBIAS_DO

VBIAS = VOUT +1.2V, VIN = VOUT, IOUT = 3A

5.2

VBIAS = 5.5V, VIN = VOUT, IOUT = 3A

BIAS Pin Current in

Shutdown (Nap Mode)

IBIAS_NAP

VBIAS = 5.5V, EN = 0V

200

µA

IMON Pin Voltage

VIMON

IOUT = 3A, VIN – VOUT = 0.2V

0.97

1.03

IOUT = 1A, VIN – VOUT = 0.2V

311.7 333.3 353.3

Programmable Current

Limit 3

ILIM(P)

IOUT_OC_FAULT_LIMIT = 16’h0003

2.92

3.04

3.14

IOUT_OC_FAULT_LIMIT = 16’h0001

0.95

1.02

1.085

Internal Current Limit 3

IILIM(I)

VIN =1.5V, ∆VOUT = -5%, VBIAS = 5.5V

4.5

PGFB Pin Threshold

PGFB Rising

295

300

305

Hysteresis

PG Low Voltage

VPG_OL

IPG = 200µA, VPGFB = 250mV

100

CLKDIS Threshold

Input High Voltage

VBIAS −

0.3

Input Low Voltage

0.3

CLKDIS Leakage Current

VCLKDIS = 5.5V

100

SETCAP Pin Current

ISETCAP

VSETRES− VSETCAP ≥ 100mV (Fast Start

Enabled)

Fast Start-Up Threshold

Turn On (Measured as VSETRES –

VSETCAP)

Turn Off (Measured as VSETRES –

VSETCAP)

-5

Temperature Output

Error 4

TJ = 25°C

−

°C

0°C ≤ TJ ≤ 125°C

−

Thermal Shutdown

TSDN

TJ Rising

168

°C

Hysteresis

BIAS Pin Undervoltage

Lock Out

VBIAS(UVLO)

EN = VBIAS, VIN =

0V, VOUT = 0V

VBIAS Rising

2.11

2.16

2.2

VBIAS Falling

1.96

2.02

2.06

Input-to-Output

Differential Voltage

Control 5

VIOCAV

VIOC Amplifier Gain

V/V

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