參數(shù)資料
型號(hào)： ILC7081
廠商： Fairchild Semiconductor Corporation
英文描述： 50/100mA SOT-23 CMOS RF LDO Regulators
中文描述： 50/100mA的SOT - 23 CMOS射頻LDO穩(wěn)壓器
文件頁(yè)數(shù)： 8/16頁(yè)
文件大小： 574K
代理商： ILC7081
ILC7080/81
8
REV. 1.0.7 4/3/03
The layout of the LDO and its external components are also
based on some simple rules to minimize EMI and output
voltage ripple.
Figure 8. Recommended application circuit schematic
Figure 9. Recommended application circuit layout
(not drawn to scale).
Note:
ground plane is bottom layer of PCB and connects to
top layer ground connections through vias.
C
NOISE
0.01
μ
F
C
OUT
4.7
μ
F
ESR<0.5
C
IN
1
μ
F
ON/OFF
V
OUT
V
IN
V
BATT
ILC7080
SOT23-5
5
2
3
1
4
L
G
Ground Plane
Ground Plane
Ground Plane
Ground Plane
DC/DC
Converter
L
O
A
D
+
GND
Evaluation Board Parts List For Printed Circuit Board Shown Above
Grounding Recommendations
1.
Connect C
IN
between V
IN
of the ILC7080/81 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 ILC7080/81 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; ILC7080/81, input capacitor C
IN
, noise bypass capacitor C
NOISE
and output capac-
itor C
OUT
as close together as possible.
2.
Keep the output capacitor C
OUT
as close to the ILC7080/81 as possible with very short traces to the V
OUT
and GND pins.
3.
The traces for the related components; ILC7080/81, input capacitor C
IN
, noise bypass capacitor C
NOISE
and output capac-
itor 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.
Label
U1
J1
CIN
CNOISE
COUT
Part Number
ILC7081AIM5-30
69190-405
GRM40 Y5V 105Z16
ECU-V1H103KBV
GRM42-6X5R475K10
Manufacturer
Fairchild Semi.
Berg
muRata
Panasonic
muRata
Description
100mA RF LDO
TM
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)
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ILC7081AIM5 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:50/100mA SOT-23 CMOS RF LDO Regulators
ILC7081AIM525X 功能描述:低壓差穩(wěn)壓器 - LDO 0.15A LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
ILC7081AIM525X_Q 功能描述:低壓差穩(wěn)壓器 - LDO 0.15A LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
ILC7081AIM526X 功能描述:低壓差穩(wěn)壓器 - LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
ILC7081AIM527X 功能描述:低壓差穩(wěn)壓器 - LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
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