參數(shù)資料
型號(hào)： 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)： 2/16頁
文件大?。?/td> 290K
代理商： EN5311QI
03799
11/24/2009
Rev:B
EN5311QI
Enpirion 2009 all rights reserved, E&OE
10
www.enpirion.com
The output capacitance requirement is a
minimum of 10uF.
The control loop is
designed to be stable with up to 60uF of total
output capacitance next to the output pins of
the device without requiring modification to the
compensation network. VOUT has to be sensed
at the last output filter capacitor next to the
device. Capacitance above the 10uF minimum
should be added if the transient performance is
not sufficient using the 10uF.
Enpirion
recommends a low ESR MLCC type capacitor
be used.
Additional bulk capacitance for decoupling and
bypass can be placed at the load as long as
there is sufficient separation between the VOUT
Sense point and the bulk capacitance. The
separation provides an inductance that isolates
the control loop from the bulk capacitance.
Excess total capacitance on the output (Output
Filter + Bulk) can cause an over-current
condition at startup. Refer to the section on
Soft-Start for the maximum total capacitance
on the output.
The output capacitor must use a X5R or X7R
or equivalent dielectric formulation.
Y5V or
equivalent
dielectric
formulations
lose
capacitance
with
frequency,
bias,
and
temperature and are not suitable for switch-
mode DC-DC converter input and output filter
applications.
Power-Up Sequencing
During power-up, ENABLE should not be
asserted before VIN. Tying these pins together
meets these requirements.
Cin
Manufacturer
Part #
Value
WVDC
Case Size
Murata
GRM219R61A475KE19D
4.7uF
10V
0805
GRM319R61A475KA01D
4.7uF
10V
1206
GRM219R60J475KE01D
4.7uF
10V
0805
GRM31MR60J475KA01L
4.7uF
10V
1206
Panasonic
ECJ-2FB1A475K
4.7uF
10V
0805
ECJ-3YB1A475K
4.7uF
10V
1206
ECJ-2FB0J475K
4.7uF
6.3V
0805
ECJ-3YB0J475K
4.7uF
6.3V
1206
Taiyo Yuden
LMK212BJ475KG-T
4.7uF
10V
0805
LMK316BJ475KD-T
4.7uF
10V
1206
JMK212BJ475KD-T
4.7uF
6.3V
0805
Cout
Manufacturer
Part #
Value
WVDC
Case Size
Murata
GRM219R60J106KE19D
10uF
6.3V
0805
GRM319R60J106KE01D
10uF
6.3V
1206
Panasonic
ECJ-2FB0J106K
10uF
6.3V
0805
ECJ-3YB0J106K
10uF
6.3V
1206
Taiyo Yuden
JMK212BJ106KD-T
10uF
6.3V
0805
JMK316BJ106KF-T
10uF
6.3V
1206
1. For VIN ≤ 5.5V
LAYOUT CONSIDERATIONS*
*Optimized PCB Layout file downloadable from the Enpirion Website to assure first pass design success.
Recommendation 1:
Input and output filter capacitors should be placed on the same side of the
PCB, and as close to the EN5311QI package as possible. They should be connected to the device
with very short and wide traces. Do not use thermal reliefs or spokes when connecting the capacitor
pads to the respective nodes. The +V and GND traces between the capacitors and the EN5311QI
should be as close to each other as possible so that the gap between the two nodes is minimized,
even under the capacitors.
Recommendation 2
: DO NOT connect GND pins 3 and 4 together. Pin 3 should be used for the
Input capacitor local ground and pin 4 should be used for the output capacitor ground. The ground
pad for the input and output filter capacitors should be isolated ground islands and should be
connected to system ground as indicated in recommendation 3 and recommendation 5.
1
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
EN5311QI-E 功能描述:電源管理IC開發(fā)工具 Eval Board EN5311QI 1A Sync. Buck Convtr RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V
EN5312Q 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Fully Integrated Voltage Mode Synchronous Buck PWM DC-DC Converter Module
EN5312QI 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 1A Sync Buck Reg w/ Integrated Inductor RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
EN5312QI-E 功能描述:電源管理IC開發(fā)工具 1A Synchronous Buck Regulator Eval Board RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V
EN5312QI-T 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 1A Sync Buck Reg RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
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