IR3311 Datasheet, PDF (4/12 Pages) International Rectifier – PROGRAMMABLE CURRENT SENSING HIGH SIDE SWITCH

IR3311(S)
Current Sense Characteristics
Symbol Parameter
Ratio
I load / IIfb current ratio
Ratio_TC Iload/Ifb variation over temperature
offset
Load current diagnostic offset
Trst
Ifb response time (low signal)
Min.
4,500
-5
-0.9
—
Typ.
5,300
0
0
0
Max. Units Test Conditions
6,300 — Tj = 25^oC ,Rfb = 500Ω,
I = 50A
+5
% Tj = -40 T0 +150^oC
0.9
A I = 2A
15
µs 90% of the I load step
Functional Block Diagram
VCC
4mA
70V
4V
-
+
80Ω
charge
pump
Reset
Q
latch
Set
driver
On/Off
fast turn-off
+
-
33³V^6V
active clamp
disconnection
70V
33V
33V
Wait
43V
timer
1.5 ms
timer
300 us
-
Min. pulse
+
I out > 60 A
Tj > 165 °C
reverse
battery
protection
IN
4
Ifb OUT
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