參數(shù)資料
型號： MC33701
廠商： 飛思卡爾半導體(中國)有限公司
英文描述： 1.5 A Switch-Mode Power Supply with Linear Regulator(1.5 A開關方式電源，帶線性穩(wěn)壓器)
中文描述： 1.5開關模式電源，線性穩(wěn)壓器（1.5 A的開關方式電源，帶線性穩(wěn)壓器）
文件頁數(shù)： 20/24頁
文件大小： 841K
代理商： MC33701
33701
20
Go to: www.freescale.com
Table 5. Command Byte Definitions
Security in Writing Commands
All writing operations are critical and must not be
inadvertently latched after a false command. To improve the
security level, a so-called
first command
is defined to initiate
each write communications.
A first command has the Command Byte address field equal
to the related operation one, followed by a null value field (all
zeros).
Table 6
summarizes first command definitions. The
master sends the first command before the Command Byte for
the intended operation.
Voltage Margining Operation
After starting the communication in Writing mode, the master
sends the first command followed by the specific Command
Byte to set the required voltage margining for either the LDO or
the switcher (see
Figure 17
). To achieve a simultaneous set for
both LDO and switcher, two specific commands must be issued
in sequence after the first command, one for each supply.
Figure 17. Voltage Margining Programming
(One Supply Only)
Note
x bits are defined in
Table 5
.
Watchdog Programming Operation
For watchdog operation control, the master periodically
sends a watchdog first command followed by a command byte
selecting, or confirming, the watchdog period according to the
options listed in
Table 5
. Also see
Figure 18
.
The internal watchdog timer will be cleared each time a
watchdog command is written into the device, provided it
arrives during the window open time. The Command 01100000
sent twice will shut the time OFF, and the watchdog function will
be disabled. Any other valid watchdog command turns on the
timer again.
Figure 18. Watchdog Timer Programming
Note
x bits are defined in
Table 5
.
Operation
Address
Value
Action
Voltage Margining
(As a 2nd
Command Byte)
0
0
1
0
0
0
0
0
1st Command
0
0
1
x
0
0
0
0
Output Normal
0
0
1
x
0
0
0
1
+ 1%
0
0
1
x
0
0
1
0
+ 2%
0
0
1
x
0
0
1
1
+ 3%
0
0
1
x
0
1
0
0
+ 4%
LDO Output: x=0
0
0
1
x
0
1
0
1
+ 5%
Switcher Output
x
=1
0
0
1
x
0
1
1
0
+ 6%
0
0
1
x
0
1
1
1
+ 7%
0
0
1
x
1
0
0
1
- 1%
0
0
1
x
1
0
1
0
- 2%
0
0
1
x
1
0
1
1
- 3%
0
0
1
x
1
1
0
0
- 4%
0
0
1
x
1
1
0
1
- 5%
0
0
1
x
1
1
1
0
- 6%
0
0
1
x
1
1
1
1
- 7%
Watchdog
Programming
(As a 2nd
Command Byte)
0
1
1
0
0
0
0
0
1st Command
0
1
1
0
0
0
0
0
WD OFF
(Note 13)
0
1
1
0
1
0
0
0
WD 1280 ms
WinOFF
0
1
1
0
1
0
0
1
WD 320 ms
WinOFF
0
1
1
0
1
0
1
0
WD 80 ms
WinOFF
0
1
1
0
1
0
1
1
WD 20 ms
WinOFF
0
1
1
0
1
1
0
0
WD 1280 ms
WinON
0
1
1
0
1
1
0
1
WD 320 ms
WinON
0
1
1
0
1
1
1
0
WD 80 ms
WinON
0
1
1
0
1
1
1
1
WD 20 ms
WinON
Notes
13.
The Watchdog feature will be turned ON automatically
after receiving any other valid command byte changing
watchdog time.
Table 6. First Command Definitions
First Command
Operation
001 00000
Voltage Margining
011 00000
Watchdog Programming
0
0
0 0 0 0 0
1
0
0
1
x
x
x
x
x
First Byte for Voltage Margining
Command Byte
Ack
0
1
0 0 0 0 0
1
1
0
1
x
x
x
x
x
First Byte for Watchdog Programming
Command Byte
Ack
F
Freescale Semiconductor, Inc.
For More Information On This Product,
n
.
相關PDF資料
PDF描述
MC33702 3.0 A Switch-Mode Power Supply with Linear Regulator(3.0 A開關方式電源，帶線性穩(wěn)壓器)
MC33742 System Basis Chip (SBC) with Enhanced High-Speed CAN Transceiver(帶增強型高速CAN收發(fā)器的系統(tǒng)基片)
MC33790 Two-Channel Distributed System Interface (DSI) Physical Interface Device(2通道分布式系統(tǒng)接口（DSI）物理接口)
MC33793 Distributed System Interface (DSI) Sensor Interface(分布式系統(tǒng)接口（DSI）傳感器接口)
MC33794 Electric Field Imaging Device(電場成像設備)
相關代理商/技術參數(shù)
參數(shù)描述
MC33720 制造商:PRIVATE LABEL 功能描述:AXIAL FAN, 254MM, 125VAC, 1A, Supply Voltage:125VAC, Flow Rate - Imperial:935cu.
MC33730EK 功能描述:開關變換器、穩(wěn)壓器與控制器 SW MODE P/S W/ MULT 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 開關頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
MC33730EKR2 功能描述:開關變換器、穩(wěn)壓器與控制器 SW MODE P/S W/ MULT 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 開關頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
MC3373P 制造商:Motorola Inc 功能描述:
MC33742DW 功能描述:網(wǎng)絡控制器與處理器 IC SBC-E-HS RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
發(fā)布緊急采購，3分鐘左右您將得到回復。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*