Datasheet

Electrical characteristics A5972D
6/37 Doc ID 13956 Rev 5
3 Electrical characteristics
T
J
= -40 °C to 125 °C, VCC = 12 V, unless otherwise specified.
Table 4. Electrical characteristics
Symbol Parameter Test condition Min Typ Max Unit
V
CC
Operating input
voltage range
436V
R
DS(on)
Mosfet on resistance 0.250 0.5 Ω
I
L
Maximum limiting
current
(1)
1. With T
J
= 85 °C, I
lim_min
= 2 A, assured by design, characterization and statistical correlation.
V
CC
= 5 V 1.8 2.5 3
A
V
CC
= 5 V, T
J
= 25 °C 2 2.5 3
f
SW
Switching frequency 212 250 280 kHz
Duty cycle 0 100 %
Dynamic characteristics (see test circuit)
V
5
Voltage feedback 4.4 V < V
CC
< 36 V, 1.198 1.235 1.272 V
η Efficiency V
0
= 5 V, V
CC
= 12 V 90 %
DC characteristics
I
qop
Total operating
quiescent current
35mA
I
q
Quiescent current Duty cycle = 0; V
FB
= 1.5 V 2.5 mA
Error amplifier
V
OH
High level output
voltage
V
FB
= 1 V 3.5 V
V
OL
Low level output
voltage
V
FB
= 1.5 V 0.4 V
I
o source
Source output current
V
COMP
= 1.9 V;
V
FB
= 1 V
190 300 μA
I
o sink
Sink output current
V
COMP
= 1.9 V;
V
FB
= 1.5 V
11.5 mA
I
b Source bias current 2.5 4 μA
DC open loop gain R
L=5065dB
gm Transconductance
I
COMP
= -0.1 mA to 0.1 mA;
V
COMP
= 1.9 V
2.3 mS
8