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參數(shù)資料
| 型號： | IRU3018CW |
| 廠商： | International Rectifier |
| 英文描述： | 5-BIT PROGRAMMABLE SYNCHRONOUS BUCK PLUS LDO CONTROLLER AND 200mA LDO ON-BOARD |
| 中文描述： | 5位可編程同步降壓普樂士LDO控制器和200mA LDO的板載 |
| 文件頁數(shù)： | 15/16頁 |
| 文件大?。?/td> | 148K |
| 代理商： | IRU3018CW |
IRU3018
15
Rev. 1.5
07/24/01
4) Place the output inductor, L3 and the output capaci-
tors, C16 between the mosfet and the load with out-
put capacitors distributed along the slot 1 and close
to it.
5) Place the bypass capacitors, C8 and C19 right next
to 12V and 5V pins. C8 next to the 12V, pin 1 and
C19 next to the 5V, pin 8.
6) Place the IRU3018 such that the PWM output drives,
pins 24 and 22 are relatively short distance from gates
of Q3 and Q4.
7) Place all resistor dividers close to their respective
feedback pins.
8) Place the 2.5V output capacitor, C18 close to the pin
13 of the IC and the 1.5V output capacitor, C17 close
to the Q2 MOSFET.
Note:
It is better to place the 1.5V linear regulator
components close to the 3018 and then run a trace
from the output of the regulator to the load. However,
if this is not possible then the trace from the linear
drive output pin, pin 16 must be run away from any
high frequency data signals.
It is critical, to place high frequency ceramic capaci-
tors close to the clock chip and termination resistors
to provide local bypassing.
9) Place R12 and C10 close to pin 20
10) Place C9 close to pin 9
Component connections:
Note:
It is extremely important that no data bus should
be passing through the switching regulator section spe-
cifically close to the fast transition nodes such as PWM
drives or the inductor voltage.
Using the 4 layer board, dedicate on layer to ground,
another layer as the power layer for the 5V, 3.3V, Vcore,
1.5V and if it is possible for the 2.5V.
Connect all grounds to the ground plane using direct
vias to the ground plane.
Use large low inductance/low impedance plane to con-
nect the following connections either using component
side or the solder side.
a) C14 to Q3 Drain
b) Q3 Source to Q4 Drain
c) Q4 drain to L3
d) L3 to the output capacitors, C16
e) C16 to the load, slot 1
f) Input filter L1 to the C16 and C3
g) C1 to Q2 drain
h) C17 to the Q2 source
I) A minimum of 0.2 inch width trace from the C18
capacitor to pin 13
Connect the rest of the components using the shortest
connection possible.
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| IRU3018CWTR | 功能描述:IC CTRL/REG SYNC BUCK 24-SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準包裝:2,000 系列:- 應(yīng)用:電源，ICERA E400，E450 輸入電壓:4.1 V ~ 5.5 V 輸出數(shù):10 輸出電壓:可編程 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:42-WFBGA，WLCSP 供應(yīng)商設(shè)備封裝:42-WLP 包裝:帶卷 (TR) |
| IRU3021CW | 制造商:International Rectifier 功能描述:ELECTRONIC COMPONENT |
| IRU3021M | 制造商:IRF 制造商全稱:International Rectifier 功能描述:5-BIT PROGRAMMABLE SYNCHRONOUS BUCK PLUS TRIPLE LDO CONTROLLER |
| IRU3021MCW | 功能描述:IC CTRL/REG SYNC BUCK 28-SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準包裝:2,000 系列:- 應(yīng)用:電源，ICERA E400，E450 輸入電壓:4.1 V ~ 5.5 V 輸出數(shù):10 輸出電壓:可編程 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:42-WFBGA，WLCSP 供應(yīng)商設(shè)備封裝:42-WLP 包裝:帶卷 (TR) |
| IRU3021MCWTR | 功能描述:IC CTRL/REG SYNC BUCK 28-SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準包裝:2,000 系列:- 應(yīng)用:電源，ICERA E400，E450 輸入電壓:4.1 V ~ 5.5 V 輸出數(shù):10 輸出電壓:可編程 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:42-WFBGA，WLCSP 供應(yīng)商設(shè)備封裝:42-WLP 包裝:帶卷 (TR) |
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