Datasheet

Electrical characteristics A7986A
6/42 DocID022801 Rev 5
4 Electrical characteristics
T
J
= - 40 °C to 125 °C, V
CC
= 12 V, unless otherwise specified.
Table 4. Electrical characteristics
Symbol Parameter Test conditions
Values
Unit
Min. Typ. Max.
V
CC
Operating input voltage
range
4.5 38
V
V
CCON
Turn-on V
CC
threshold 4.5
V
CCHYS
V
CC
UVLO hysteresis 0.1 0.4
R
DS(on)
MOSFET on-resistance 200 400 mΩ
I
LIM
Maximum limiting current
T
J
= 25 °C 3.7 5.2
A
3.5 5.2
Oscillator
F
SW
Switching frequency 210 250 275 KHz
V
FSW
FSW pin voltage 1.254 V
D Duty cycle 0 100 %
F
ADJ
Adjustable switching
frequency
R
FSW
= 33 kΩ 1000 KHz
Dynamic characteristics
V
FB
Feedback voltage 4.5 V< V
CC
< 38 V 0.588 0.6 0.612 V
DC characteristics
I
Q
Quiescent current
Duty cycle = 0,
V
FB
= 0.8 V
2.4 mA
I
QST-BY
Total standby quiescent
current
20 30 μA
Enable
V
EN
EN threshold voltage
Device OFF level 0.3
V
Device ON level 1.2
I
EN
EN current EN = V
CC
7.5 10 μA
Soft-start
T
SS
Soft-start duration
FSW pin floating 7.3 8.2 9.8
ms
F
SW
= 1 MHz,
R
FSW
= 33 kΩ
2
Error amplifier