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參數(shù)資料
| 型號： | MAX8543 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Dual J-K Negative-Edge-Triggered Flip-Flops With Clear And Preset 16-CDIP -55 to 125 |
| 中文描述： | 降壓型控制器，具有預(yù)偏置啟動、無損檢測、同步整流和OVP |
| 文件頁數(shù)： | 11/27頁 |
| 文件大小： | 399K |
| 代理商： | MAX8543 |
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M
S tep-Down Controllers with Prebias S tartup,
Lossless S ensing, S ync hronization, and OV P
______________________________________________________________________________________
11
Pin Desc ription (c ontinued)
PIN
MAX8543
13
MAX8544
16
NAME
FUNCTION
LX
Inductor Connection
14
17
DH
High-Side MOSFET Gate-Driver Output. Connect DH to the gate of the high-side
external MOSFETs. DH is pulled low in shutdown.
15
18
BST
Boost Capacitor Connection. Connect a 0.1μF or larger ceramic capacitor from BST to
LX. BST provides power for the high-side MOSFET gate drive.
16
19
FSYNC
Frequency Set and Synchronization. Connect a resistor from FSYNC to GND to set the
switching frequency or drive with a clock signal to synchronize between 160kHz and
1.2MHz. See the
Switching Frequency and Synchronization
section
.
—
1
ILIM2
Analog Programmable Current-Limit Input for Low-Side MOSFET (V
LX
- V
PGND
).
Connect a resistor from ILIM2 to ground to set the overcurrent threshold. See the
Setting the Current Limits
section.
—
10
MODE
Current-Limit Operating-Mode Selection. Connect MODE to VL for latch-off current limit
or connect to GND for automatic-recovery current limit with the MAX8544. The MAX8543
always uses automatic-recovery current limit.
—
11
POK
Power-OK. POK is an open-drain output that is high impedance when the output is
above 91% of its nominal regulation voltage. POK is pulled low when the output is out
of regulation and when the part is in shutdown. To use POK as a logic-level signal,
connect a pullup resistor from POK to the logic supply.
—
20
SYNCO
Synchronization Output. Provides a clock output that is 180° out of phase with the rising
edge of DH for out-of-phase synchronization of another MAX8544.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 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 |
| MAX8556ETE | 3-Line To 8-Line Decoders/Demultiplexers 20-LCCC -55 to 125 |
| MAX8557 | 3-Line To 8-Line Decoders/Demultiplexers 16-CFP -55 to 125 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX8543EEE | 功能描述:DC/DC 開關(guān)控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| MAX8543EEE+ | 功能描述:電流型 PWM 控制器 Step-Down Controller RoHS:否 制造商:Texas Instruments 開關(guān)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(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| MAX8543EEE+T | 功能描述:電流型 PWM 控制器 Step-Down Controller RoHS:否 制造商:Texas Instruments 開關(guān)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(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| MAX8543EEE-T | 功能描述:DC/DC 開關(guān)控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| MAX8544EEP | 功能描述:DC/DC 開關(guān)控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
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