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參數(shù)資料
| 型號： | MAX1614EUA |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | High-Side, N-Channel MOSFET Switch Driver |
| 中文描述： | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO8 |
| 封裝： | UMAX-8 |
| 文件頁數(shù)： | 7/8頁 |
| 文件大?。?/td> | 87K |
| 代理商： | MAX1614EUA |
M
High-S ide, N-Channel MOS FET
S witc h Driver
_______________________________________________________________________________________
7
On/Off Control with a
S ingle Pushbutton S witc h
The MAX1614’s separate on and off inputs allow maxi-
mum flexibility in controlling the external MOSFETs.
Connect a pushbutton switch to the
ON
pin and micro-
controller (μC) I/O for single-button control. Connect the
OFF
pin to another μC I/O pin. On the first button
depression, the MAX1614 turns on automatically; the
signal is also detected by the μC. When the button is
depressed a second time, the μC wraps around and
turns off the MAX1614 by pulling low on the
OFF
pin
(Figure 3).
S imple Low-Battery Disc onnec t/Fresh
Battery Rec onnec t Circ uit
A simple undervoltage disconnect circuit is often desir-
able to prevent damage to secondary batteries due to
repeated deep discharge or cell reversal. The Typical
Operating Circuitturns off the MAX1614, disconnecting
the battery from the load when the battery voltage
falls below the minimum battery voltage required,
(V
LOW BATT
). V
LOW BATT
= (R1 + R2) / R2 x V
TH
where
V
TH
is the LBI input threshold (1.20V typ). When fresh
cells are installed or the batteries are recharged, a μC
or pushbutton reconnects the load.
Using
LBO
to Generate Early
Power-Fail Interrupt
Many applications require an early warning indicating
that power is failing so that the microprocessor (μP)
can take care of any “housekeeping” functions (storing
current settings in memory, etc.) before the power fails.
Connect LBI through a resistor divider across the bat-
tery, and connect
LBO
to the μP nonmaskable interrupt
(NMI). Set the threshold so that
LBO
goes low when the
battery decays to a point where regulation begins to
degrade (Figure 4). V
LOW BATT
= (R1 + R2) / R2 x V
TH,
where V
TH
is the LBI input threshold (1.20V typ). Once
housekeeping is complete, the μP can turn off the load
by pulling
OFF
low.
MAX1614
SHUTDOWN
(CMOS OR TTL LOGIC)
GND
ON
OFF
Figure 2. Single-Line Shutdown Control
MAX1614
OFF
LBO
GND
LBI
BATT
SRC
GATE
ON
N
N
LOAD
TOμC
R1
R2
Figure 3. Single-Pushbutton On/Off Control
MAX1614
OFF
LBO
GND
LBI
BATT
SRC
GATE
ON
N
N
LOAD
TOμC
PORT PINS
TOμC
NONMASKABLE
INTERRUPT
R1
R2
Figure 4. Using
LBO
to Generate Early Power-Fail Interrupt
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1614EUA/V+ | 功能描述:功率驅(qū)動器IC High-Side N-Channel MOSFET Switch Driver RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時間: 下降時間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| MAX1614EUA/V+T | 功能描述:功率驅(qū)動器IC High-Side N-Channel MOSFET Switch Driver RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時間: 下降時間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| MAX1614EUA+ | 功能描述:功率驅(qū)動器IC High-Side NCh Switch Driver RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時間: 下降時間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| MAX1614EUA+T | 功能描述:功率驅(qū)動器IC High-Side NCh Switch Driver RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時間: 下降時間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| MAX1614EUA-T | 功能描述:功率驅(qū)動器IC RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時間: 下降時間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
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