參數(shù)資料
型號： C1888CT
廠商： Texas Instruments, Inc.
英文描述： Off-line Power Supply Controller
中文描述： 脫機電源控制器
文件頁數(shù)： 3/6頁
文件大?。?/td> 299K
代理商： C1888CT
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
General
V
CC
Zener Voltage
Startup Current
Operating Current I(V
CC
)
Under-Voltage-Lockout
Start Threshold
Minimum Operating Voltage after Start
Hysteresis
Oscillator
Amplitude
C
T
to DRIVE high Propagation Delay
C
T
to DRIVE low Propagation Delay
Driver
VOL
I
CC
< 1.5mA
V
OUT
= 0
V
CC
= V
CC
(zener) – 100mV, F = 150kHz
8.6
9.0
150
1.2
9.3
250
2.5
V
μ
A
mA
V
OUT
= 0
V
OUT
= 0
V
OUT
= 0
8.0
6.0
1.8
8.4
6.3
8.8
6.6
V
V
V
V
CC
= 9V
Overdrive = 0.2V
Overdrive = 0.2V
3.5
3.7
100
50
3.9
200
100
V
ns
ns
I = 20mA, V
CC
= 9V
I = 100mA, V
CC
= 9V
I =
20mA, V
CC
= 9V
I =
100mA, V
CC
= 9V
C
LOAD
= 1nF
C
LOAD
= 1nF
0.15
0.7
8.8
7.8
35
30
0.4
1.8
V
V
V
V
ns
ns
VOH
8.5
6.1
Rise Time
Fall Time
Line Voltage Detection
Charge Coefficient: I
CHG
/ I(T
ON
)
Minimum Line Voltage for Fault
Minimum Current I(T
ON
) for Fault
On Time During Fault
Oscillator Restart Delay after Fault
V
OUT
Error Amp
V
OUT
Regulated 5V (ADJ Open)
Discharge Ratio: I
DCHG
/ I(T
OFF
)
Voltage at T
OFF
Regulation gm (Note 1)
70
60
VCT = 3V, DRIVE = High, I(T
ON
) = 1mA
R
ON
= 330k
R
ON
= 330k
C
T
= 150pF, V
LINE
= Min
1V
0.73
60
0.79
80
220
2
0.5
0.85
100
V
μ
A
μ
s
ms
V
CC
= 9V, I
DCHG
= I(T
OFF
)/2
I(T
OFF
) = 50
μ
A
I(T
OFF
) = 50
μ
A
Max I
DCHG
= 50
μ
A
Max I
DCHG
= 125
μ
A
4.5
0.95
0.6
5.0
1.01
0.95
2.4
4.1
5.5
1.07
1.3
V
V
mA/V
mA/V
1.9
7.0
Unless otherwise stated, these specifications hold for T
A
= 0
°
C to 70
°
C for the
UCC3888, -40
°
C
to
+85
°
C for the UCC2888, and -55
°
C to +125
°
C for the UCC1888.
No load at DRIVE pin (C
LOAD
=0).
ELECTRICAL CHARACTERISTICS
DIL-8, SOIC-8 (Top View)
N or J, D Package
CONNECTION DIAGRAM
I
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8mA
Current into T
ON
Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5mA
Voltage on V
OUT
Pin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20V
Current into T
OFF
Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250
μ
A
Storage Temperature . . . . . . . . . . . . . . . . . . . . -65
°
C to +150
°
C
Note: Unless otherwise indicated, voltages are referenced to
ground and currents are positive into, negative out of, the speci-
fied terminals.
ABSOLUTE MAXIMUM RATINGS
UCC1888
UCC2888
UCC3888
Note 1: gm is defined as
I
DCHG
V
OUT
for the values of V
OUT
when V
OUT
is in regulation. The two points used to calculate gm are for
I
DCHG
at 65% and 35% of its maximum value.
3
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