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參數(shù)資料
| 型號： | ILC7084 |
| 廠商： | Fairchild Semiconductor Corporation |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | 150mA SOT-23 Low Noise CMOS RF-LDO⑩ Regulator |
| 中文描述： | 150mA的SOT - 23封裝CMOS射頻低噪聲LDO穩(wěn)壓器⑩穩(wěn)壓器 |
| 文件頁數(shù)： | 10/16頁 |
| 文件大?。?/td> | 472K |
| 代理商： | ILC7084 |
ILC7083/ILC7084
10
REV. 1.0.9 1/28/03
Evaluation Board Parts List
(for Figure 9)
Label
U1
J1
Cin
Cnoise
Cout
Part Number
ILC7083AIM5-30
69190-405
GRM40 Y5V 105Z16
ECU-V1H103KBV
GRM42-6X5R475K10
Manufacturer
Fairchild Semiconductor
Berg
muRata
Panasonic
muRata
Description
150mA RF LDO
regulator
Connector, four position header
Ceramic capacitor, 1
μ
F,16V, SMT (size 0805)
Ceramic capacitor, 0.01
μ
F,16V, SMT (size 0603)
Ceramic capacitor, 4.7
μ
F,16V, SMT (size 1206)
Grounding Recommendations
1.
Connect C
IN
between V
IN
of the ILC7083 and the
“GROUND PLANE”.
2.
Keep the ground side of C
OUT
and C
NOISE
connected to
the “LOCAL GROUND” and not directly to the
“GROUND PLANE”.
3.
On multilayer boards use component side copper for
grounding around the ILC7083 and connect back to a
“GROUND PLANE” using vias.
4.
If using a DC-DC converter in your design, use a star
grounding system with separate traces for the power
ground and the control signals. The star should radiate
from where the power supply enters the PCB.
Layout Considerations
1.
Place all RF LDO related components; ILC7083, input
capacitor C
IN
, noise bypass capacitor C
NOISE
and output
capacitor C
OUT
as close together as possible.
2.
Keep the output capacitor C
OUT
as close to the ILC7083
as possible with very short traces to the V
OUT
and GND
pins.
3.
The traces for the related components; ILC7083, input
capacitor C
IN
, noise bypass capacitor C
NOISE
and output
capacitor C
OUT
can be run with minimum trace widths
close to the LDO.
4.
Maintain a separate “LOCAL GROUND” remote from
the “GROUND PLANE” to ensure a quiet ground near
the LDO.
Figure 9 shows how this circuit can be translated into a PCB
layout.
Recommended Ceramic Output Capacitors
C
OUT
1
μ
F
Capacitor Size
0805
0805
0805
1206
1206
1206
0805
0805
1206
1206
1206
I
OUT
Dielectric
X5R
X7R
X7R
X7R
X7R
X5R
X5R
X5R
X5R
X5R
X7R
Part Number
C2012X5R1A105KT
GRM40X7R105K010
LMK212BJ105KG
GRM42-6X7R105K016
EMK316BJ105KL
TMK316BJ105KL
GRM40X5R225K 6.3
C2012X5R0J225KT
EMK316BJ225ML
GRM42-6X5R475K010
LMK316BJ475ML
Capacitor Vendor
TDK
muRata
Taiyo-Yuden
muRata
Taiyo-Yuden
Taiyo-Yuden
muRata
TDK
Taiyo-Yuden
muRata
Taiyo-Yuden
0 to 150mA
2.2
μ
F
0 to 150mA
4.7
μ
F
0 to 150mA
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