Datasheet

S0023-01
COMP
0.5 V
−+
1
Current Limit
I
SENSE
EA
I
SS
R2
C
V
REF
R1
V
REF
S
S
-
+
1.0 V
+−
16
SHUTDOWN
Current Limit
SHUTDOWN With Auto-Restart
SHUTDOWN Without
Auto-Restart (Latched)
0.5 V
0
Shutdown
On
Off
PWM
UC2856Q
www.ti.com SGLS265A –NOVEMBER 2004– REVISED MAY 2011
NOTE: If V
REF
/ R1 < 0.8 mA, the shutdown latch commutates when I
SS
= 0.8 mA and a restart cycle will be initiated. If V
REF
/
R1 > 3 mA, the device will latch off until power is recycled.
Figure 7. Shutdown
Copyright © 2004–2011, Texas Instruments Incorporated 9