ADP1972

Data Sheet

Rev. B | Page 4 of 18

Parameter

Symbol

Test Conditions/Comments

Min

Typ

Max

Unit

PRECISION ENABLE LOGIC (EN)

Maximum EN Pin Voltage

60

V

EN Threshold Rising

1.25

1.4

V

EN Threshold Falling

1.1

1.22

V

EN Pin Current

0.32

2

μA

MODE LOGIC

Maximum MODE Pin Voltage

5.5

V

MODE Threshold Rising

1.20

1.5

V

MODE Threshold Falling

0.7

1.05

V

CURRENT LIMIT (CL)

Set Current

18

20

21

μA

Buck Internal Reference

250

300

350

mV

Boost Internal Reference

450

500

550

mV

Hiccup Detect Time

4.4

5.2

6.1

ms

Hiccup Off-Time

4.4

5.2

6.1

ms

VREG

LDO Regulator Output Voltage

4.9

5

5.1

V

Guaranteed Output Current

5

mA

Line Regulation

5

5.1

V

Load Regulation

5

5.1

V

FAULT

Maximum FAULT Pin Voltage

60

V

FAULT Threshold Rising

1.2

1.5

V

FAULT Threshold Falling

0.7

1.05

V

FAULT Pin Current

0.49

2

μA

PWM DRIVE LOGIC SIGNALS (DH/DL)

DL Drive Voltage

No load

VREG

V

DH Drive Voltage

No load

VREG

V

DL and DH Sink Resistance

1.2

2.4

Ω

DL and DH Source Resistance

1.4

2.6

Ω

DL and DH Pull-Down Resistor

0.5

1

1.5

MΩ

THERMAL SHUTDOWN (TSD)

TSD Threshold Rising

150

°C

TSD Threshold Falling

135

°C

them by the 11 μA typical value, and multiplying this answer by 100.

100

μA

11

(%)























DMAX

SCFG

I

I

t Matching

CFG Curren

DMAX and S