LTC3713 datasheet(3/24 Pages) LINER

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LTC3713

3713fa

The q denotes specifications which apply over the full operating

temperature range, otherwise specifications are TA = 25°C. VIN1 = 15V, VIN2 = 1.5V unless otherwise noted.

ELECTRICAL CHARACTERISTICS

Note 1: Absolute Maximum Ratings are those values beyond which the life

of a device may be impaired.

Note 2: TJ is calculated from the ambient temperature TA and power

dissipation PD as follows:

LTC3713EG: TJ = TA + (PD • 130°C/W)

Note 3: The LTC3713 is tested in a feedback loop that adjusts VFB to

achieve a specified error amplifier output voltage (ITH).

Note 4: The LTC3713E is guaranteed to meet performance specifications

from 0

°C to 70°C. Specifications over the –40°C to 85°C operating

temperature range are assured by design, characterization and correlation

with statistical process controls.

Note 5: Current limit guaranteed by design and/or correlation to static test.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

IRUN/SS(C)

Soft-Start Charge Current

VRUN/SS = 0V

– 0.5

– 1.2

–3

µA

IRUN/SS(D)

Soft-Start Discharge Current

VRUN/SS = 4.5V, VFB = 0V

0.8

1.8

µA

UVLO

VIN1 Undervoltage Lockout

VIN1 Falling

3.4

3.9

UVLOR

VIN1 Undervoltage Lockout Release

VIN1 Rising

3.5

TG RUP

TG Driver Pull-Up On Resistance

TG High

Ω

TG RDOWN

TG Driver Pull-Down On Resistance

TG Low

Ω

BG RUP

BG Driver Pull-Up On Resistance

BG High

Ω

BG RDOWN

BG Driver Pull-Down On Resistance

BG Low

Ω

TG tr

TG Rise Time

CLOAD = 3300pF

TG tf

TG Fall Time

CLOAD = 3300pF

BG tr

BG Rise Time

CLOAD = 3300pF

BG tf

BG Fall Time

CLOAD = 3300pF

Internal VCC Regulator

VINTVCC

Internal VCC Voltage

6V < VIN < 30V

4.7

5.3

∆VLDO(LOADREG) Internal VCC Load Regulation

ICC = 0mA to 20mA

–0.1

±2%

PGOOD Output

∆VFB1H

PGOOD Upper Threshold

VFB1 Rising

5.5

7.5

9.5

∆VFB1L

PGOOD Lower Threshold

VFB1 Falling

– 5.5

– 7.5

– 9.5

∆VFB(HYS)

PGOOD Hysteresis

VFB1 Returning

VPGL

PGOOD Low Voltage

IPGOOD = 5mA

0.15

0.4

Boost Regulator

VIN2(MIN)

Minimum Operating Voltage

0.9

1.5

VIN2(MAX)

Maximum Operating Voltage

IQ(VIN2)

Input DC Supply Current (VIN2)

Normal

4.5

Shutdown

0.01

µA

VFB2

VFB2 Feedback Voltage

°C to 70°C

1.205

1.23

1.255

–40

°C to 85°C

1.200

1.260

IVFB2

VFB2 Pin Bias Current

∆VFB2(LINEREG)

BOOST Reference Line Regulation

1.5V

≤ VIN ≤ 10V

0.02

0.2

%/V

fBOOST

BOOST Switching Frequency

°C to 70°C

1.0

1.4

1.8

MHz

–40

°C to 85°C

0.9

1.9

MHz

DCBOOST(MAX)

BOOST Maximum Duty Cycle

ILIM(BOOST)

BOOST Switch Current Limit

(Note 5)

500

800

VCESAT(BOOST)

BOOST Switch VCESAT

ISW = 300mA

300

350

ISWLKG(BOOST)

BOOST Switch Leakage Current

VSW = 5V

0.01

µA

VSHDN(HIGH)

SHDN Input Voltage High

VSHDN(LOW)

SHDN Input Voltage Low

0.3

ISHDN

SHDN Pin Bias Current

VSHDN = 3V

µA

VSHDN = 0V

0.01

0.1

µA

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