參數(shù)資料
型號： MIC3000
廠商： Micrel Semiconductor,Inc.
英文描述： SFP Management IC
中文描述： SFP管理IC
文件頁數(shù)： 3/10頁
文件大?。?/td> 63K
代理商： MIC3000
October 2002
3
MIC2194
MIC2194
Absolute Maximum Ratings
(Note 1)
Supply Voltage (V
IN
) .....................................................15V
Digital Supply Voltage (V
DD
) ...........................................7V
Enable Pin Voltage (V
EN
).............................
–
0.3V to +15V
Comp Pin Voltage (V
COMP
)............................
–
0.3V to +3V
Feedback Pin Voltage (V
FB
) ..........................
–
0.3V to +3V
Current Sense Voltage (V
IN
–
V
CS
).................
–
0.3V to +1V
Power Dissipation (P
D
) .....................285mW @ T
A
= 85
°
C
Ambient Storage Temp ............................
–
65
°
C to +150
°
C
ESD Rating,
Note 3 ......................................................
2kV
Micrel
Electrical Characteristics
V
IN
= 5V, V
OUT
= 3.3V, T
J
= 25
°
C, unless otherwise specified.
Bold
values indicate
–
40
°
C<T
J
<+125
°
C.
Parameter
Condition
Min
Typ
Max
Units
Regulation
Feedback Voltage Reference
(1%)
(2%)
1.233
1.22
1.245
1.245
1.257
1.27
V
V
Feedback Bias Current
50
nA
Output Voltage Line Regulation
5V
≤
V
IN
≤
9V
0mV < (V
IN
–
V
CS
) < 75mV
5V
≤
V
IN
≤
9V, 0mV < (V
IN
–
V
CS
) < 75mV (
±
3%)
0.15
% / V
Output Voltage Load Regulation
0.9
%
Output Voltage Total Regulation
1.208
1.282
V
Input & V
DD
Supply
V
IN
Input Current (I
Q
)
Shutdown Current (I
SD
)
Digital Supply Voltage (V
DD
)
Digital Supply Load Regulation
(excluding external MOSFET gate current)
1
2
mA
V
EN
= 0V
I
L
= 0
I
L
= 0 to 1mA
V
DD
upper threshold (turn on threshold)
0.5
5
μ
A
2.82
3.0
3.18
V
0.1
V
Undervoltage Lockout
2.65
V
UVLO Hysteresis
100
mV
Enable/UVLO
Enable Input Threshold
0.6
0.9
1.2
V
UVLO Threshold
1.4
1.5
1.6
V
Enable Input Current
V
EN/UVLO
= 5V
0.2
5
μ
A
Current Limit
Current Limit Threshold Voltage
V
IN
–
V
CS
voltage to trip current limit
90
110
130
mV
Error Amplifier
Error Amplifier Gain
20
V/V
Current Amplifier
Current Amplifier Gain
3.0
V/V
Oscillator Section
Oscillator Frequency (f
O
)
Maximum Duty Cycle
360
400
440
kHz
V
FB
= 1.0V
V
FB
= 1.5V
Measured on FB
100
%
Minimum On Time
165
ns
Frequency Foldback Threshold
0.3
V
Frequency Foldback Frequency
90
kHz
Operating Ratings
(Note 2)
Supply Voltage (V
IN
) .................................... +2.9V to +14V
Junction Temperature .......................
–
40
°
C
≤
T
J
≤
+125
°
C
Package Thermal Resistance
θ
JA
8-lead SOP .................................................140
°
C/W
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