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UC2856Q Datasheet(PDF) 9 Page - Texas Instruments

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Part # UC2856Q
Description  IMPROVED CURRENT MODE PWM CONTROLLER
PDF  12 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

UC2856Q Datasheet(HTML) 9 Page - Texas Instruments

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S0023-01
COMP
0.5 V
−
+
1
Current Limit
ISENSE
EA
ISS
R2
C
VREF
R1
VREF
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
SGLS265 – NOVEMBER 2004
APPLICATION AND OPERATION INFORMATION (continued)
NOTE: If VREF / R1 < 0.8 mA, the shutdown latch commutates when ISS = 0.8 mA and a restart cycle will be initiated. If VREF /
R1 > 3 mA, the device will latch off until power is recycled.
Figure 7. Shutdown
9



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