Datasheet

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UNDERVOLTAGE LOCKOUT
vs
TEMPERATURE (UCC28C45)
V
UVLO
− UVLO Voltage − V
T
J
− Temperature − °C
7.0
9.0
8.8
8.4
8.0
7.4
7.2
7.8
7.6
8.2
8.6
−50 −25 0 25 50 75 100 125
UVLO
ON
UVLO
OFF
6
16
15
13
11
8
7
10
9
12
14
−50 −25 0 25 50 75 100 125
UVLO
ON
UVLO
OFF
UNDERVOLTAGE LOCKOUT
vs
TEMPERATURE (UCC28C44)
V
UVLO
− UVLO Voltage − V
T
J
− Temperature − °C
5
0
10
15
20
25
200 k 400 k 600 k 800 k0 k 1 M
1-nF LOAD
NO LOAD
SUPPLY CURRENT
vs
OSCILLATOR FREQUENCY
I
DD
− Supply Current − mA
f − Frequency − Hz
6.3
7.3
7.2
7.0
6.8
6.5
6.4
6.7
6.6
7.1
−50 −25 0 25 50 75 100 125
6.9
UNDERVOLTAGE LOCKOUT
vs
TEMPERATURE (UCC28C41)
V
UVLO
− UVLO Voltage − V
T
J
− Temperature − °C
UVLO
ON
UVLO
OFF
UCC28C4x-EP
BiCMOS LOW-POWER CURRENT-MODE PWM CONTROLLERS
SGLS352B – DECEMBER 2006 – REVISED MAY 2007
APPLICATION INFORMATION (continued)
Figure 14. Figure 15.
Figure 16. Figure 17.
14
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