ISL854102

FN8870 Rev.1.00

Page 7 of 21

Mar 15, 2019

Absolute Maximum Ratings

Thermal Information

VIN to GND. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +43V

PHASE to GND. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to VIN + 0.3V (DC)

PHASE to GND. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -2V to +44V (20ns)

EN to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +43V

BOOT to PHASE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +5.5V

COMP, FS, PG, SYNC, SS, VCC to GND . . . . . . . . . . . . . . . . . . -0.3V to +5.9V

FB to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +2.95V

ESD Rating

Human Body Model (Tested per JESD22-A114) . . . . . . . . . . . . . . . . . 2kV

Charged Device Model (Tested per JESD22-C101E). . . . . . . . . . . . .1.5kV

Latch-Up (Tested per JESD-78A; Class 2, Level A) . . . . . . . . . . . . 100mA

Thermal Resistance

JA (°C/W) JC (°C/W)

DFN Package (Notes 5, 6) . . . . . . . . . . . . . .

42

4.5

Maximum Junction Temperature (Plastic Package) . . . . . . . . . . . .+150°C

Maximum Storage Temperature Range . . . . . . . . . . . . . .-65°C to +150°C

Ambient Temperature Range . . . . . . . . . . . . . . . . . . . . . . .-40°C to +125°C

Pb-Free Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see TB493

Recommended Operating Conditions

Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +125°C

Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +3V to +40V

CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions can adversely impact product

reliability and result in failures not covered by warranty.

NOTES:

5.

JA is measured in free air with the component mounted on a high-effective thermal conductivity test board with “direct attach” features. See TB379

for details.

6. For

JC, the “case temp” location is the center of the exposed metal pad on the package underside.

Electrical Specifications TA = -40°C to +125°C, VIN = 3V to 40V, unless otherwise noted. Typical values are at TA = +25°C. Boldface

limits apply across the junction temperature range, -40°C to +125°C

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

(Note 9)TYP

MAX

(Note 9)UNIT

SUPPLY VOLTAGE

VIN Voltage Range

VIN

340

V

VIN Quiescent Supply Current

IQ

VFB = 0.7V, SYNC = 0V, fSW = VCC

80

µA

VIN Shutdown Supply Current

ISD

EN = 0V, VIN = 40V (Note 7)2

4

µA

VCC Voltage

VCC

VIN = 6V, IOUT = 0 to 10mA

4.5

5.1

5.7

V

POWER-ON RESET

VCC POR Threshold

Rising edge

2.75

2.95

V

Falling edge

2.35

2.6

V

OSCILLATOR

Nominal Switching Frequency

fSW

FS pin = VCC

430

500

570

kHz

Resistor from the FS pin to GND = 340kΩ

240

300

360

kHz

Resistor from the FS pin to GND = 32.4kΩ

2000

kHz

Minimum Off-Time

tMIN_OFF VIN = 3V

150

ns

Minimum On-Time

tMIN_ON

(Note 10)90

ns

FS Voltage

VFS

RFS = 100kΩ

0.39

0.4

0.41

V

Synchronization Frequency

SYNC

300

2000

kHz

SYNC Pulse Width

100

ns

ERROR AMPLIFIER

Error Amplifier Transconductance Gain

gm

External compensation

165

230

295

µA/V

Internal compensation

50

µA/V

FB Leakage Current

VFB = 0.6V

1

150

nA

Current Sense Amplifier Gain

RT

0.46

0.5

0.54

V/A

FB Voltage

TA = -40°C to +85°C

0.590

0.599

0.606

V

TA = -40°C to +125°C

0.590

0.599

0.607

V