ISL78227

FN8808 Rev.6.02

Page 15 of 43

Feb 28, 2025

Input Pull-Up Current Compliance Voltage

EN >2V, pin open

2.5

V

Logic Input Low

PIN voltage falling

0.8

V

Logic Input High

PIN voltage rising

2

V

Duty Cycle Conversion (FB Accuracy)

0% duty cycle input, measure at the FB pin

0

V

25% duty cycle input, frequency = 400kHz,

measure at the FB pin

0.600

0.625

0.650

V

50% duty cycle input, frequency = 400kHz,

measure at the FB pin

1.218

1.253

1.288

V

60% duty cycle input, measure at the FB

pin

1.45

1.49

1.53

V

TRACK PIN - ANALOG INPUT

Input Leakage Current

VTRACK = 1.6V, leakage current into this

pin to ground

-1.0

-0.6

-0.3

µA

TRACK Input Reference Voltage Range

0

1.6

V

TRACK Input Reference Voltage Accuracy

Measure at the FB pin, VTRACK = 1.5V

-4.0

-0.5

4.0

%

Measure at the FB pin, VTRACK = 0.5V

-6.0

1.8

6.0

%

TRACK SS_DONE Detection Threshold

0.29

0.30

0.31

V

OVER-TEMPERATURE PROTECTION

Over-Temperature Trip Point

160

°C

Over-Temperature Recovery Threshold

145

°C

NOTES:

6. Compliance to datasheet limits are assured by one or more methods: production test, characterization, and/or design.

7. The IC is tested in conditions with minimum power dissipations in the IC, meaning TA ≈ TJ.

Electrical Specifications Refer to Figure 3 on page 7 and Typical Application Schematics (page 8). Operating conditions unless

otherwise noted: VIN = 12V, VPVCC = 5.2V and VVCC = 5.2V, TA = -40°C to +125°C (Note 7). Typical values are at TA = +25°C. Boldface limits apply across

the operating temperature range, -40°C to +125°C. (Continued)

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

(Note 6)

TYP

MAX

(Note 6) UNIT