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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(yè)數(shù)： | 6/13頁(yè) |
| 文件大?。?/td> | 169K |
| 代理商： | MIC5190 |
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M
IC
5
1
9
0
Functional Diagram
Micrel
April, 2
00
4
6
M9999-
0
428
0
4
Figure 1. MIC5190 Block Diagram
Functional Description
VIN
T
he
VIN
pin is connected to the
N
-
C
hannel drain.
VIN
is the
input power being supplied to the output.
T
his pin is also used
to power the internal current limit comparator and compare
the
IS
E
NS
E voltage for current limit.
T
he voltage range is
from
0
.9
V
min to 5.5
V
max.
ISENSE
T
he
IS
E
NS
E pin is the other input to the current limit com-
parator.
T
he output current is limited when the
IS
E
NS
E pin's
voltage is 5
0
m
V
less than the
VIN
pin.
I
n cases where there
is a current limited source and there isn’t a need for current
limit, this pin can be tied directly to
VIN
.
I
ts operating voltage
range, like the
VIN
pin, is
0
.9
V
min to 5.5
V
max.
VCC1, VCC2
VCC1
supplies the error amplifier and internal reference,
while
VCC
2 supplies the output gate drive. For this reason,
ensure these pins have good input capacitor bypassing for
better performance.
T
he operating range is from 4.5
V
to
13
.2
V
and both
VCC
pins should be tied together. Ensure that
the voltage supplied is greater than a gate-source threshold
above the output voltage for the
N
-
C
hannel M
OS
FE
T
se-
lected.
Output
T
he output drives the external
N
-
C
hannel M
OS
FE
T
and is
powered from
V
CC
.
T
he output can sink and source over
1
5
0
mA of current to drive either an
N
-
C
hannel M
OS
FE
T
or an
external
NPN
transistor.
T
he output drive also has short
circuit current protection.
Enable
T
he M
IC
5
1
9
0
comes with an active-high enable pin that
allows the regulator to be disabled. Forcing the enable pin low
disables the regulator and sends it into a low off-mode-
current state. Forcing the enable pin high enables the output
voltage.
T
he enable pin cannot be left floating; a floating
enable pin may cause an indeterminate state on the output.
FB
T
he feedback pin is used to sense the output voltage for
regulation.
T
he feedback pin is compared to an internal
0
.5
V
reference and the output adjusts the gate voltage accordingly
to maintain regulation.
S
ince the feedback biasing current is
typically
13
μ
A, smaller feedback resistors should be used to
minimize output voltage error.
COMP
CO
M
P
is the external compensation pin.
T
his allows com-
plete control over the loop to allow stability for any type of
output capacitor, load currents and output voltage. A detailed
explanation of how to compensate the M
IC
5
1
9
0
is in the
“
D
esigning with the M
IC
5
1
9
0
” section.
SGND, PGND
SGND
is the internal signal ground which provides an iso-
lated ground path from the high current output driver.
T
he
signal ground provides the grounding for noise sensitive
circuits such as the current limit comparator, error amplifier
and the internal reference voltage.
PGND
is the power ground and is the grounding path for the
output driver.
OUTPUT
CONTRO
L
A
ND
LE
V
EL
S
H
I
F
T
CURR
E
NT
L
I
M
IT
AM
P
L
I
F
I
E
R
E
RROR
AM
P
L
I
F
I
E
R
E
N
ABLE
VIN
IS
VCC
2
OUT
PGND
FB
0
.5
V
5
0
m
V
SGND
E
N
VCC1
CO
M
P
INT
E
RN
AL
VO
L
T
A
G
E
R
E
GU
LA
TOR
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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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