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MIC3230 bảng dữ liệu(PDF) 3 Page - Micrel Semiconductor

tên linh kiện MIC3230
Giải thích chi tiết về linh kiện  Constant Current Boost Controller for Driving High Power LEDs
PDF  19 Pages
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nhà sản xuất  MICREL [Micrel Semiconductor]
Trang chủ  http://www.micrel.com
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MIC3230 bảng dữ liệu(HTML) 3 Page - Micrel Semiconductor

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Micrel, Inc.
MIC3230/1/2
November 2009
3
M9999-113009-B
Pin Configuration
IADJ
IS
6
5
1
VIN
EN
PWMD
COMP
10 VDD
DRV
PGND
OVP
9
8
7
2
3
4
IADJ
IS
VIN
EN
PWMD
COMP
1
VDD
DRV
PGND
OVP
2
3
4
5
FS
EPAD
SYNC/NC
6
8
12
11
10
9
7
1
N/C
VIN
EN
PWMD
COMP
IADJ
FS
AGND
16 N/C
VDD
DRV
PGND
OVP
IS
SYNC/NC
N/C
15
14
13
12
11
10
9
2
3
4
5
6
7
8
EPAD
10-Pin MSOP (MM)
MIC3232
12-Pin 3mmx3mmMLF
® (ML)
MIC3230, MIC3231
See Product Option Matrix for selection
16-Pin TSSOP (TSE)
MIC3230, MIC3231
See Product Option Matrix for selection
Pin Description
Pin Number
MLF
®
Pin Number
TSSOP
Pin Number
MSOP
Pin Name
Pin Function
--
1
--
NC
No Connect.
1
2
1
VIN
Input Voltage (power) 6V to 45V.
2
3
2
EN
Enable Control (Input). Logic High (≥1.5V) enables the
regulator. Logic Low (≤0.4V) shuts down the regulator.
Connect a 100kΩ resistor from EN to VIN.
3
4
3
PWMD
PWM input. High signal terminates the output power. Low
Signal starts up the output power.
4
5
4
COMP
Compensation (output): for external compensation.
5
6
5
IADJ
Feedback (input).
6
7
--
FS
Frequency Select (input). Connected to a Resistor to
determine the operating frequency.
--
8
--
AGND
Analog Ground.
--
9
--
NC
No Connect.
7
10
--
SYNC
Sync (output). Connect to another MIC3230 to synchronize
multiple converters.
8
11
6
IS
Current Sense (input). Connected to external current sense
resistor which in turn is connected to the source of the external
FET as well as an external slope compensation resistor.
9
12
7
OVP
OVP divider connection (output). Connect the top of the
divider string to the output. If the load is disconnected, the
output voltage will rise until OVP reaches 1.25V and then will
regulate around this point.
10
13
8
PGND
Power Ground.
11
14
9
DRV
Drive Output: connect to the gate of external FET (output).
12
15
10
VDD
VDD Filter for internal power rail. Do not connect an external
load to this pin. Connect 10µF to GND.
--
16
--
NC
No Connect.
--
--
--
EPAD
Connect to AGND.



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