參數(shù)資料
型號： UC2878DWP
英文描述： High performance CSS transceiver enabling location awareness
中文描述： 電壓模式開關電源控制器
文件頁數(shù)： 3/6頁
文件大?。?/td> 490K
代理商： UC2878DWP
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
Open Lamp Detect Section
Soft Start Threshold
Error Amp Threshold
Soft Start Current
Error Amp 2 Section
Input Offset Voltage
Input Bias Current
Input Offset Current
Open Loop Gain
Output High
Output Low
Output Source Current
Output Sink Current
Common Mode Range
Unity Gain Bandwidth
Isense Section
Threshold
Output Section
Output Low Level
V
EA
(-) = 0V
V
SS
= 4.2V
V
SS
= 2V
2.9
0.7
10
3.4
1.0
20
3.8
1.3
40
V
V
μ
A
V
O
= 2V
0
10
-1
0.5
mV
μ
A
μ
A
dB
V
V
μ
A
mA
V
MHz
-0.2
V
O
= 0.5 to 3V
V
ID
= 100mV, V
O
= 2V
V
ID
= -100mv, V
O
= 2V
V
ID
= 100mV, V
O
= 2V
V
ID
= -100mV, V
O
= 2V
65
3.6
90
4
0.1
-500
20
4.4
0.2
-350
10
0
V
IN
-2V
T
J
= 25
°
C (Note 4)
1
0.475
0.525
0.575
V
I
OUT
= 0, Outputs A and B
I
OUT
= 10mA
I
OUT
= 100mA
I
OUT
= 0, Outputs C and D
I
OUT
= -10mA
I
OUT
= -100mA
T
J
= 25
°
C, Cl = 1nF(Note 4)
T
J
= 25
°
C, Cl = 1nF(Note 4)
0.05
0.1
1.5
14.9
14.3
13.5
30
30
0.2
0.4
2.2
V
V
V
V
V
V
ns
ns
Output High Level
14.7
13.5
12.5
Rise Time
Fall Time
Output Dynamics
Out A and B Duty Cycle
Out C Max Duty Cycle
Out C Min Duty Cycle
Out D Max Duty Cycle
Out D Min Duty Cycle
Under Voltage Lockout Section
Start-Up Threshold
Hysterisis
Enable Section
Input High Threshold
Input low Threshold
Input Current
Supply Current Section
VCC Supply Current
VC Supply Current
ICC Disabled
Note 3: Unless otherwise specified, all voltages are with respect to ground.
Currents are positive into, and negative out of the specified terminal.
Note 4: Guaranteed by design but not 100% tested in production.
Note 5: Impedance below specified maximum guarantees proper operation of the Open Lamp Detect.
80
80
48
100
49.9
50
%
%
%
%
%
V
EA
1(-) = 1V
V
EA
1(-) = 2V
V
EA
2(+)- V
EA
2(-) = 100mV
V
EA
2(+)- V
EA
2(-) = -100mV
0
96
0
92
3.7
120
4.2
200
4.5
280
V
mV
2
V
V
μ
A
0.8
400
V
ENABLE
= 5V
150
V
CC
= 20V
V
C
=20V
V
CC
= 20V, V
ENABLE
= 0V
8
7
1
14
12
10
mA
mA
μ
A
UC1871
UC2871
UC3871
ELECTRICAL
CHARACTERISTICS (cont.)
Unless otherwise stated, these parameters apply for T
A
= -55
°
C to +125
°
C for the UC1871;
-25
°
C to +85
°
C for the UC2871; 0
°
C to +70
°
C for the UC3871; V
CC
= 5V, V
C
= 15V,
V
ENABLE
= 5V, C
T
= 1nF, Zero Det = 1V.
3
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