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MIC2131 데이터시트(PDF) 3 Page - Micrel Semiconductor

부품명 MIC2131
상세설명  High Voltage Synchronous Buck Control IC with Low EMI Option
PDF  20 Pages
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제조업체  MICREL [Micrel Semiconductor]
홈페이지  http://www.micrel.com
Logo MICREL - Micrel Semiconductor

MIC2131 데이터시트(HTML) 3 Page - Micrel Semiconductor

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Micrel, Inc.
MIC2130/1
April 2008
3
M9999-042108-C
Pin Description
Pin Number
MLF-16
Pin Number
e-TSSOP-16
Pin Name
Pin Function
1
3
HCL*
AGND2
High Current Limit (Output): The capacitor on this pin sets
the duration of time so that the current limit will be set to
200% of its nominal set current. AGND2 for MIC2130
2
4
SS
Soft Start (Output): Active at Power-up, Enable, and Current
Limit recovery.
3
5
FB
Feedback (Output): Input to error amplifier. Regulates to
0.7V.
4
6
COMP
Compensation (Output): Pin for external compensation.
5
7
AGND1
Analog Ground.
6
8
EN/UVLO
Enable (Input): Logic low turns the IC off. When the voltage
drops below the band gap reference voltage of the IC the
device turns off. This accurate threshold allows the pin to be
used as an accurate under voltage lockout.
7
9
VIN
Supply Voltage (Input): 8V to 40V.
8
10
VDD
5V Internal Linear Regulator from VIN. When VIN is <8V,
this regulator operates in drop-out mode. Connect external
bypass capacitor.
9
11
LSD
Low-Side Drive (Output): High-current driver output for
external low-side MOSFET.
10
12
PGND
Power Ground: High current return for ext. Low side driver.
11
13
SW
Switch Node (Output): High current output driver return.
12
14
HSD
High-Side Drive (Output): High current output-driver for ext.
high-side MOSFET.
13
15
BST
Boost (Output): Provides voltage for high-side MOSFET
driver. The gate drive voltage is higher than the source
voltage by VDD minus a diode drop.
14
16
CS
Current Sense (Output): Current-limit comparator non
inverting input. The current limit is sensed across the low-
side FET during the OFF time. Current limit is set by the
resistor in series with the CS pin.
15
1
AVDD
Analog Supply Voltage (internal 5V LDO): Connect external
By pass capacitor.
16
2
PGOOD
Power Good (Output): High output when VOUT > 90%
nominal.
Note:
* indicates that is only used on MIC2131.



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