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參數(shù)資料
| 型號： | EN5311QI |
| 廠商： | ENPIRION INC |
| 元件分類： | 穩(wěn)壓器 |
| 中文描述： | 1 A SWITCHING REGULATOR, 4000 kHz SWITCHING FREQ-MAX, QCC20 |
| 封裝： | 5 X 5 MM, 1.10 MM HEIGHT, HAOLGEN FREE AND ROHS COMPLIANT, QFN-20 |
| 文件頁數(shù)： | 9/16頁 |
| 文件大小： | 290K |
| 代理商： | EN5311QI |
03799
11/24/2009
Rev:B
EN5311QI
Enpirion 2009 all rights reserved, E&OE
2
www.enpirion.com
Pin Description
VIN
(Pin 1,2): Input voltage pin.
Supplies
power to the IC.
Input GND
: (Pin 3): Input power ground.
Connect this pin to the ground terminal of the
input
capacitor.
Refer
to
Layout
Recommendations for further details.
Output GND
: (Pin 4): Power ground.
The
output filter capacitor should be connected
between this pin and VOUT. Refer to Layout
recommendations for further detail.
VOUT
(Pin 5,6,7): Regulated output voltage.
NC
(Pin 8,9,10,11,12,13,14): These pins
should not be electrically connected to each
other or to any external signal, voltage, or
ground. One or more of these pins may be
connected internally.
VSENSE
(Pin 15):
Sense pin for output
voltage regulation.
Connect VSENSE to the
output voltage rail as close to the terminal of
the output filter capacitor as possible.
VFB
(Pin 16): Feed back pin for external
divider option. When using the external divider
option (VS0=VS1=VS2= high) connect this pin
to the center of the external divider. Set the
divider such that VFB = 0.603V.
VS0,VS1,VS2
(Pin 17,18,19): Output voltage
select. VS0=pin19, VS1=pin18, VS2=pin17.
Selects one of seven preset output voltages or
choose external divider by connecting pins to
logic high or low. Logic low is defined as VLOW
≤ 0.4V. Logic high is defined as VHIGH ≥ 1.4V.
Any level between these two values is
indeterminate.
ENABLE
(Pin 20): Output enable. Enable =
logic high, disable = logic low. Logic low is
defined as VLOW ≤ 0.2V. Logic high is defined
as VHIGH ≥ 1.4V. Any level between these two
values is indeterminate.
Bottom Thermal Pad
: Device thermal pad to
remove heat from package. Connect to PCB
surface ground pad and PCB internal ground
plane (see layout recommendations).
Figure 2. Pin description, top view.
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