參數(shù)資料
型號(hào)： SC412AEVB
廠商： Semtech Corporation
英文描述： Synchronous Buck Controller
中文描述： 同步降壓控制器
文件頁(yè)數(shù)： 6/22頁(yè)
文件大?。?/td> 639K
代理商： SC412AEVB
6
2006 Semtech Corp.
www.semtech.com
SC412A
POWER MANAGEMENT
Pin Descriptions
Pin #
Pin Name
Pin Function
1
LX
Switching (phase) node
2
BST
Boost capacitor connection for high-side gate drive
3
VCC
5V power input for internal analog circuits and gate drive outputs
4
DL
Gate drive output for the low-side external MOSFET
5
GND
Power ground — the return point for the DL driver output and the reference point
for the ILIM and Zero Cross circuits
6
RTN
Return or analog ground for VOUT sense — connect to GND at the chip
7
NC
Not connected internally — leave unconnected or connect to GND
8
NC
Not connected internally — leave unconnected or connect to GND
9
FB
Feedback input — connect to an external resistor divider from
VOUT to program the output voltage
10
VOUT
Output voltage sense point for determining the on-time
11
PGOOD
Open-drain Power Good indicator — high impedance indicates power is good —
an external pull-up resistor is required.
12
EN
Enable input — connect EN to RTN to disable the SC412A
13
ILIM
Current limit sense point — to program the current limit connect a resistor from ILIM to
LX or to a current sense resistor
14
NC
Not connected internally — leave unconnected or connect to GND
15
NC
Not connected internally — leave unconnected or connect to GND
16
DH
Gate drive output for the high-side external FET
T
PAD
Thermal pad for heatsinking purposes — not connected internally — connect to system
ground through preferably one large via or multiple smaller vias
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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