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參數資料
| 型號： | MAX8543-MAX8544 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Step-Down Controllers with Prebias Startup, Lossless Sensing, Synchronization, and OVP |
| 中文描述： | 降壓型偏置啟動，無損檢測，同步，和OVP控制器 |
| 文件頁數： | 1/27頁 |
| 文件大小： | 399K |
| 代理商： | MAX8543-MAX8544 |
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General Desc ription
The MAX8543/MAX8544 current-mode, constant-fre-
quency PWM buck controllers operate from a 3V to
13.2V input supply and generate adjustable 0.8V to 0.9
x V
IN
output voltages at loads up to 25A. They feature
adjustable switching frequency and synchronization for
noise-sensitive applications.
The MAX8543/MAX8544 can start with (or without) a pre-
existing bias on the output, without discharging the out-
put. This feature simplifies tracking supply designs for
core and I/O applications and redundant supply designs.
The MAX8543/MAX8544 use the DC resistance of the
output inductor as the current-sense element for loss-
less, low-cost current sensing. The current-sense
threshold can be set to four discrete levels to accom-
modate inductors with different DC resistance values.
The MAX8544 features a power-OK monitor and two
MAX8544 controllers that can operate at 180° out-of-
phase for dual-output applications.
Applic ations
Base Stations
Networks and Telecom
Storage
Servers
Features
Prebias Startup/Monotonic
1% Output Accuracy
Ceramic, Polymer, or Electrolytic Capacitors
200kHz to 1MHz Adjustable Frequency
160kHz to 1.2MHz Synchronization
Lossless, Foldback Current Limit
Overvoltage Protection
Enable (On/Off)
Adjustable Soft-Start
MAX8544
Latch-Off/Autorecovery
Power-OK Monitor
Out-of-Phase Clock Output
M
S tep-Down Controllers with Prebias S tartup,
Lossless S ensing, S ync hronization, and OV P
________________________________________________________________
Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
Ordering Information
MAX8543
ON
OPTIONAL
SYNCHRONIZATION
OFF
BST
VL
V
= 3V
TO5.5V
COMP
ILIM
GND
FSYNC
EN
SS
PGND
IN
DH
LX
DL
CS+
CS-
FB
INPUT 3V TO13.2V
OUTPUT
0.8V TO0.9 x V
IN
UP TO25A
POK (MAX8544)
Typic al Operating Circ uit
19-3155; Rev 0; 5/04
EVALUATION KIT
AVAILABLE
PART
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
16 QSOP
20 QSOP
MAX8543
EEE
MAX8544
EEP
Pin Configurations appear at end of data sheet.
相關PDF資料 |
PDF描述 |
|---|---|
| MAX8543EEE | Step-Down Controllers with Prebias Startup, Lossless Sensing, Synchronization, and OVP |
| MAX8543 | Dual J-K Negative-Edge-Triggered Flip-Flops With Clear And Preset 16-CDIP -55 to 125 |
| MAX8544 | Dual J-K Negative-Edge-Triggered Flip-Flops With Clear And Preset 20-LCCC -55 to 125 |
| MAX8546EUB | PLASTIC ENCAPSULATED DEVICES |
| MAX8556 | 3-Line To 8-Line Decoders/Demultiplexers 16-CFP -55 to 125 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| MAX8544EEP | 功能描述:DC/DC 開關控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| MAX8544EEP+ | 功能描述:電流型 PWM 控制器 Step-Down Controller RoHS:否 制造商:Texas Instruments 開關頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| MAX8544EEP+T | 功能描述:電流型 PWM 控制器 Step-Down Controller RoHS:否 制造商:Texas Instruments 開關頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| MAX8544EEP-T | 功能描述:DC/DC 開關控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| MAX8544EVKIT | 制造商:Maxim Integrated Products 功能描述:STEP-DOWN CONTROLLERS WITH PREBIAS STARTUP, L - Bulk |
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