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MIC3232YMM Datasheet(PDF) 3 Page - Micrel Semiconductor

Part # MIC3232YMM
Description  Constant Current Boost Controller for Driving High Power LEDs
PDF  20 Pages
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Manufacturer  MICREL [Micrel Semiconductor]
Direct Link  http://www.micrel.com
Logo MICREL - Micrel Semiconductor

MIC3232YMM Datasheet(HTML) 3 Page - Micrel Semiconductor

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Micrel, Inc.
MIC3230/1/2
January 2009
3
M9999-011409-A
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
MSOP-10 (MM)
MIC3232
3mmx3mmMLF
®-12L (ML)
MIC3230, MIC3231
See Product Option Matrix for selection
TSSOP-16 (TSE)
MIC3230, MIC3231
See Product Option Matrix for selection
Pin Description
Pin Number
3x3MLF
Pin Number
TSSOP-16L
Pin Number
MSOP-10L
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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