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| 型號(hào)： | MIC5190 |
| 廠商： | Micrel Semiconductor,Inc. |
| 英文描述： | ECONOLINE: RY & RX - Controllable Output- 1kVDC Isolation- No Heatsink Required- UL94V-0 Package Material- Toroidal Magnetics- No External Components- Fully Encapsulated- Efficiency to 70% |
| 中文描述： | 超高速，高電流有源濾波器/ LDO控制器 |
| 文件頁數(shù)： | 10/13頁 |
| 文件大?。?/td> | 169K |
| 代理商： | MIC5190 |
M
IC
5
1
9
0
Micrel
April, 2
00
4
10
M9999-
0
428
0
4
T
he gate-source threshold specified in most M
OS
FE
T
data
sheets refers to the minimum voltage needed to fully enhance
the M
OS
FE
T
. Although for the most part, the M
OS
FE
T
will be
operating in the linear region and the
V
GS
(gate-source
voltage) will be less than the fully enhanced
V
GS
, it is
recommended the
V
CC
voltage has 2
V
over the minimum
V
GS
and output voltage.
T
his is due to the saturation voltage
of the M
IC
5
1
9
0
output driver.
V
CC1
,2
≥
2
V
+
V
GS
+
V
OUT
For our example, with a
1
.5
V
output voltage, our M
OS
FE
T
is
fully enhanced at 4.5
V
GS
, and so our
V
CC
voltage should be
greater or equal to 8
V
.
Input Capacitor
G
ood input bypassing is important for improved perfor-
mance. Low E
SR
and low E
S
L input capacitors reduce both
the drain of the
N
-
C
hannel M
OS
FE
T
, as well as the source
impedance to the M
IC
5
1
9
0
. When a load transient on the
output occurs, the load step will also appear on the input.
D
eviations on the input voltage will be reduced by the
M
IC
5
1
9
0
’s
PSRR
, but nonetheless appear on the output.
T
here really is no minimum input capacitance, but it is
recommended that the input capacitance be equal to or
greater than the output capacitance for best performance.
Output Capacitor
T
he M
IC
5
1
9
0
is stable with any type or value of output
capacitor (even without any output capacitor!).
T
his allows
the output capacitor to select which parameters of the regu-
lator are important.
I
n cases where transient response is the
most important, low E
SR
and low E
S
L ceramic capacitors are
recommended. Also, the more capacitance on the output, the
better the transient response.
4
5
3
1
2
VIN
E
N
/
UV
L
O
CS
H
VOUT
FB
L
SD
5
60
pF
8.
06
k
B
ST
CO
M
P
6
H
SD
1
2
VS
W
11
GND
D1
BW
S
2.2
μ
F
10V
0
.
1
μ
F
10
8
VDD
7
U1
MIC2198-BML
9
100
pF
11
.5k
100
k
V
OUT
V
OUT
CS
H
J2
E
N
J
1
+
V
IN
V
IN
CS
H
V
OUT
10
k
10
k
10
10
1
μ
F
25
V
330
F
16V
10
μ
F
10
μ
F
10
μ
F
10
μ
F
10
μ
F
22
μ
F
1V
OUT
@
10
A
2
D
58
1
9HW
IR
F
7
82
1
IR
F
7
82
1
L
1
1
.8
μ
H
CD
E
P13
4-
1R
8M
C
-H
1
2.4k
330
μ
F
T
antalum
OUT
VCC1
VCC
2
VIN
FB
IS
E
NS
E
CO
M
P
GND
10
nF
100
100
10
MIC5190
1
μ
F
V
OUT
Figure 9. Post Regulator
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| MIC5190BML TR | 功能描述:IC REG CTRLR SGL POS ADJ 10-MLF RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性晶體管驅(qū)動(dòng)器 系列:- 產(chǎn)品培訓(xùn)模塊:More Information on LDOs 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:正，固定式 輸出數(shù):2 輸出電壓:2.8V，3.3V 電流 - 電源:12mA 輸入電壓:5 V ~ 22 V 工作溫度:0°C ~ 70°C 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC 包裝:帶卷 (TR) |
| MIC5190BMM | 功能描述:IC REG CTRLR SGL POS ADJ 10MSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性晶體管驅(qū)動(dòng)器 系列:- 產(chǎn)品培訓(xùn)模塊:More Information on LDOs 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:正，固定式 輸出數(shù):2 輸出電壓:2.8V，3.3V 電流 - 電源:12mA 輸入電壓:5 V ~ 22 V 工作溫度:0°C ~ 70°C 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC 包裝:帶卷 (TR) |
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