ISL8117A

FN8752 Rev 1.00

Page 8 of 23

Feb 26, 2024

DEFAULT INTERNAL MINIMUM SOFT-STARTING

tSS_MIN

Default Internal Output Ramping Time

SS/TRK open

1.5

ms

POWER-GOOD MONITORS

VPGOV

PGOOD Upper Threshold

109

112.5

115

%

VPGUV

PGOOD Lower Threshold

85

87.5

92

%

VPGLOW

PGOOD Low Level Voltage

I_SINK = 2mA

0.35

V

IPGLKG

PGOOD Leakage Current

PGOOD = 5V

20

150

nA

PGOOD TIMING

tPGR

VOUT Rising Threshold to PGOOD Rising (Note 11)

1.1

5

ms

tPGF

VOUT Falling Threshold to PGOOD Falling

75

µs

REFERENCE SECTION

VREF

Internal Reference Voltage

0.600

V

Reference Voltage Accuracy

TA = 0°C to +85°C

-0.75

+0.75

%

TA = -40°C to +125°C

-1.00

+1.00

%

IFBLKG

FB Bias Current

-40

0

40

nA

PWM CONTROLLER ERROR AMPLIFIERS

Input Common-mode Range

VIN = 12V

0

VCC5V -

2

V

DC Gain

VIN = 12V

88

dB

GBW

Gain-BW Product

VIN = 12V

8

MHz

SR

Slew Rate

VIN = 12V

2.0

V/µs

COMP VOL

VIN = 12V

0.4

V

COMP VOH

VIN = 12V

2.6

V

COMP Sink Current (Note 12)

VCOMP = 2.5V

30

mA

COMP Source Current (Note 12)

VCOMP = 2.5V

30

mA

PWM REGULATOR

tOFF_MIN

Minimum Off Time

308

ns

tON_MIN

Minimum On Time

40

ns

DVRAMP

Peak-to-peak Sawtooth Amplitude

VIN = 20V

1.0

V

VIN = 12V

0.6

V

Ramp Offset

1.0

V

SWITCHING FREQUENCY

fSW

Switching Frequency

RT = 36k

890

1050

1195

kHz

Switching Frequency

RT = 16.5k

1650

2000

2375

kHz

Switching Frequency

RT PIN connect to GND

250

300

350

kHz

Switching Frequency

RT PIN connect to VCC5V or FLOAT

515

600

645

kHz

VRT

RT Voltage

RT = 36k

770

mV

SYNCHRONIZATION

FSYNC

SYNC Synchronization Range

RT = 36kΩ

1230

2200

kHz

Electrical Specifications Recommendedoperating conditionsunlessotherwisenoted. Refer to “BlockDiagram”onpage 5and “Typical

Application Schematics” on page 6. VIN = 4.5V to 60V, or VCC5V = 5V ±10%, C_VCC5V = 4.7µF, TA = -40°C to +125°C, Typical values are at TA = +25°C,

unless otherwise specified. Boldface limits apply across the operating temperature range, -40°C to +125°C. (Continued)

SYMBOL

PARAMETER

TEST CONDITIONS

MIN

(Note 9)

TYP

MAX

(Note 9) UNIT