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參數(shù)資料
| 型號(hào)： | MAX5048 |
| 廠商： | Maxim Integrated Products, Inc. |
| 元件分類： | 外設(shè)及接口 |
| 英文描述： | Low Power 5V RS232 Dual Driver/Receiver with 0.1?μF Capacitors; Package: SO; No of Pins: 16; Temperature Range: -40?°C to 85?°C |
| 中文描述： | 電可擦除可編程邏輯器件 |
| 文件頁(yè)數(shù)： | 7/9頁(yè) |
| 文件大?。?/td> | 292K |
| 代理商： | MAX5048 |
M
7.6A, 12ns, SOT23 MOSFET Driver
_______________________________________________________________________________________
7
The quiescent current is 0.95mA typical. The current
required to charge and discharge the internal nodes is
frequency dependent (see the
Typical Operating
Characteristics
). The MAX5048A/MAX5048B power dis-
sipation when driving a ground referenced resistive
load is:
P = D x R
ON(MAX)
x I
LOAD2
where D is the fraction of the period the MAX5048A/
MAX5048Bs
’
output pulls high, R
ON (MAX)
is the maxi-
mum on-resistance of the device with the output high
(P-channel), and I
LOAD
is the output load current of the
MAX5048A/MAX5048B.
For capacitive loads, the power dissipation is:
P = C
LOAD
x (V+)
2
x FREQ
where C
LOAD
is the capacitive load, V+ is the supply
voltage, and FREQ is the switching frequency.
Layout Information
The MOSFET drivers MAX5048A/MAX5048B source-
and-sink large currents to create very fast rise and fall
edges at the gate of the switching MOSFET. The high
di/dt can cause unacceptable ringing if the trace
lengths and impedances are not well controlled. The
following PC board layout guidelines are recommended
when designing with the MAX5048A/MAX5048B:
Place one or more 0.1μF decoupling ceramic capaci-
tor(s) from V+ to GND as close to the device as possi-
ble. At least one storage capacitor of 10μF (min)
should be located on the PC board with a low resis-
tance path to the V+ pin of the MAX5048A/MAX5048B.
There are two AC current loops formed between the
device and the gate of the MOSFET being driven.
The MOSFET looks like a large capacitance from
gate to source when the gate is being pulled low.
The active current loop is from N_OUT of the
MAX5048A/MAX5048B to the MOSFET gate to the
MOSFET source and to GND of the MAX5048A/
MAX5048B. When the gate of the MOSFET is being
pulled high, the active current loop is from P_OUT of
the MAX5048A/MAX5048B to the MOSFET gate to
the MOSFET source to the GND terminal of the
decoupling capacitor to the V+ terminal of the
decoupling capacitor and to the V+ terminal of the
MAX5048A/MAX5048B. While the charging current
loop is important, the discharging current loop is crit-
ical. It is important to minimize the physical distance
and the impedance in these AC current paths.
IN+
V
IL
90%
10%
t
D–OFF
P_OUT AND
N_OUT
TIED
TOGETHER
t
D–ON
t
F
t
R
IN+
IN-
V+
V+
C
L
N_OUT
GND
P_OUT
TEST CIRCUIT
TIMING DIAGRAM
MAX5048A
MAX5048B
INPUT
OUTPUT
V
IH
Figure 1. Timing Diagram and Test Circuit
相關(guān)PDF資料 |
PDF描述 |
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| MAX5054BATA | 4A, 20ns, Dual MOSFET Drivers |
| MAX5054 | Low Power 5V RS232 Dual Driver/Receiver with 0.1?μF Capacitors; Package: SO; No of Pins: 16; Temperature Range: -40?°C to 85?°C |
| MAX5054AATA | 4A, 20ns, Dual MOSFET Drivers |
| MAX5055 | Low Power 5V RS232 Dual Driver/Receiver with 0.1?μF Capacitors; Package: SO; No of Pins: 16; Temperature Range: -40?°C to 85?°C |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX5048_05 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:7.6A, 12ns, SOT23/TDFN, MOSFET Driver |
| MAX5048AASA+ | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
| MAX5048AATT | 制造商:Maxim Integrated Products 功能描述:HIGH-SPEED HIGH-CURRENT SOT23 MOS - Rail/Tube |
| MAX5048AATT+ | 制造商:Maxim Integrated Products 功能描述:MOSFET DRVR 7.6A 1-OUT LO SIDE INV/NON-INV 6TDFN EP - Rail/Tube |
| MAX5048AATT+T | 功能描述:功率驅(qū)動(dòng)器IC 7.6A 12ns MOSFET 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(shí)間: 下降時(shí)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(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
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