UCC1883 Unitrode Semiconductor, UCC1883 Datasheet - Page 4

• Manufacturer Part Number: UCC1883
• Description: Micropower Peak Current Mode Controller
• Manufacturer: Unitrode Semiconductor

ELECTRICAL CHARACTERISTICS
UCC3883, T
CT = 100pF, T
Note 4: BSS129 (or equivalent) External Pass Element, 1 F Ceramic Bypass; See Figure 6.
Note 5: Operating in conjunction with UCCx885 using equal valued RBIAS
Note 6: Guaranteed by design. Not 100% tested in production.
Isolation Interface Section
VDD Regulator
Power Supply
FB Input High Voltage
FB Input Low Voltage
FB Input Pulse Width
FB Output Width
LOLINE Status Threshold
RSMODE Status Threshold
VDD Output
VDD Line Regulation
VDD Load Regulation
VDD Short Circuit Current Limit
DC Supply Current
CDD
Figure 1. Overcurrent Fault Timing
A
= 40 C to +85 C for the UCC2883, 55 C to +125 C for the UCC1883, VCC
A
=T
PARAMETER
J
.
Figure 3. Isolation Interface Timing
Unless otherwise noted, all specifications apply for T
No External Load
FB = V(FB+)-V(FB-), 0 FB
FB = V(FB+)-V(FB-), 0 FB VDD
(See Figure 3) (Note 6)
(See Figure 3) (Note 6)
1.0V < VCC < 13.5V
VDD = 0V
3mA < I
UDG-94081
OUT
< 0mA
TEST CONDITIONS
4
.
VDD
Figure 2. Output Rise & Fall Time
=
12V , VDD = 5V , RBIAS = 200k ,
A
= 0 C to 70 C for the
MIN
1.0
0.5
4.6
80
2.1
7
TYP
100
200
150
300
1.3
1.2
75
10
50
1.3
5
2
MAX UNITS
300
275
2.1
1.3
5.4
30
80
4
UCC1883
UCC2883
UCC3883
UDG-94082
UDG-94083
mV
mV
mA
pF
ns
ns
V
V
V
V
A
A