參數(shù)資料
型號(hào)： UC3876L
廠商： Texas Instruments, Inc.
英文描述： Phase Shift Resonant Controller
中文描述： 相移諧振控制器
文件頁(yè)數(shù)： 4/19頁(yè)
文件大?。?/td> 721K
代理商： UC3876L
4
UC1875/6/7/8
UC2875/6/7/8
UC3875/6/7/8
ELECTRICAL CHARACTERISTICS:
Unless otherwise stated, –55°C < T
A
< 125°C for the UC1875/6/7/8, –25°C < T
A
<
85°C for the UC2875/6/7/8 and 0°C < T
A
< 70°C for the UC3875/6/7/8, VC = VIN = 12V, R
FREQSET
= 12k
, C
FREQSET
= 330pF,
R
SLOPE
= 12k
, C
RAMP
= 200pF, C
DELAYSET A-B
= C
DELAYSET C-D
= 0.01
μ
F, I
DELAYSET A-B
= I
DELAYSET C-D
= –500
μ
A, T
A
= T
J
.
PARAMETER
TEST CONDITIONS
Error Amplifier
Offset Voltage
Input Bias Current
AVOL
1V < V
E/AOUT
< 4V
CMRR
1.5V < V
CM
< 5.5V
PSRR
11V < VIN < 20V
Output Sink Current
V
E/AOUT
= 1V
Output Source Current
V
E/AOUT
= 4V
Output Voltage High
I
E/AOUT
= –0.5mA
Output Voltage Low
I
E/AOUT
= 1mA
Unity Gain BW
(Note 8)
Slew Rate
(Note 8)
PWM Comparator
Ramp Offset Voltage
T
J
= 25°C (Note 3)
Zero Phase Shift Voltage
(Note 4)
PWM Phase Shift (Note1) and (Note 7)
V
E/AOUT
> (Ramp Peak + Ramp Offset)
V
E/AOUT
< Zero Phase Shift Voltage
Output Skew (Note 1) and (Note 7)
V
E/AOUT
< 1V
Ramp to Output Delay, (Note 8)
UC3875/6/7/8 (Note 6)
UC1875/6/7/8, UC2875/6/7/8 (Note 6)
Oscillator
Initial Accuracy
T
J
= 25°C
Voltage Stability
11V < VIN < 20V
Total Variation
Line, Temperature
Sync Pin Threshold
T
J
= 25°C
Clock Out Peak
T
J
= 25°C
Clock Out Low
T
J
= 25°C
Clock Out Pulse Width
R
CLOCKSYNC
= 3.9k
Maximum Frequency, (Note 7)
R
FREQSET
= 5k
Ramp Generator/Slope Compensation
Ramp Current, Minimum
I
SLOPE
= 10
μ
A, V
FREQSET
= VREF
Ramp Current, Maximum
I
SLOPE
= 1mA, V
FREQSET
= VREF
Ramp Valley
Ramp Peak - Clamping Level
R
FREQSET
= 100k
Current Limit
Input Bias
V
CS
+ = 3V
Threshold Voltage
Delay to Output, (Note 8)
UC3875/6/7/8
UC1875/6/7/8, UC2875/6/7/8
MIN
TYP
MAX
UNITS
5
15
3
mV
μ
A
dB
dB
dB
mA
mA
V
V
MHz
V/
μ
sec
0.6
90
95
100
2.5
–1.3
4.7
0.5
11
11
60
75
85
1
–0.5
5
1
4
0
7
6
1.3
0.9
99.5
0.5
5
65
65
V
V
%
%
0.55
98
0
102
2
±20
100
125
nsec
nsec
nsec
0.85
1
1.15
2
1.20
MHz
%
MHz
V
V
V
nsec
MHz
0.2
0.80
3.8
4.3
3.3
30
100
2
–11
–0.95
0
3.8
–14
μ
A
mA
V
V
–0.8
4.1
2
5
μ
A
V
nsec
nsec
2.4
2.5
85
85
2.6
125
150
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UC3876N 功能描述:軟開(kāi)關(guān) PWM 控制器 Phase Shift Resonant Controller RoHS:否 制造商:Fairchild Semiconductor 輸出端數(shù)量: 輸出電流: 開(kāi)關(guān)頻率: 工作電源電壓:30 V 電源電流: 最大工作溫度:+ 105 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel
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