參數(shù)資料
型號: ICL7667CPAZ
廠商: INTERSIL CORP
元件分類: 功率晶體管
英文描述: Dual Power MOSFET Driver
中文描述: 2 CHANNEL, BUF OR INV BASED MOSFET DRIVER, PDIP8
封裝: ROHS COMPLIANT, PLASTIC, MS-001BA, DIP-8
文件頁數(shù): 4/8頁
文件大?。?/td> 202K
代理商: ICL7667CPAZ
4
FN2853.5
April 4, 2006
Detailed Description
The ICL7667 is a dual high-power CMOS inverter whose
inputs respond to TTL levels while the outputs can swing as
high as 15V. Its high output current enables it to rapidly
charge and discharge the gate capacitance of power
MOSFETs, minimizing the switching losses in switchmode
power supplies. Since the output stage is CMOS, the output
will swing to within millivolts of both ground and V
CC
without
any external parts or extra power supplies as required by the
DS0026/56 family. Although most specifications are at V
CC
= 15V, the propagation delays and specifications are almost
independent of V
CC
.
In addition to power MOS drivers, the ICL7667 is well suited
for other applications such as bus, control signal, and clock
drivers on large memory of microprocessor boards, where
the load capacitance is large and low propagation delays are
required. Other potential applications include peripheral
power drivers and charge-pump voltage inverters.
Input Stage
The input stage is a large N-Channel FET with a P-channel
constant-current source. This circuit has a threshold of about
1.5V, relatively independent of the VCC voltage. This means
that the inputs will be directly compatible with TTL over the
entire 4.5V - 15V V
CC
range. Being CMOS, the inputs draw
less than 1
μ
A of current over the entire input voltage range
of ground to V
CC
. The quiescent current or no load supply
current of the ICL7667 is affected by the input voltage, going
to nearly zero when the inputs are at the 0 logic level and
rising to 7mA maximum when both inputs are at the 1 logic
level. A small amount of hysteresis, about 50mV to 100mV
at the input, is generated by positive feedback around the
second stage.
Output Stage
The ICL7667 output is a high-power CMOS inverter,
swinging between ground and VCC. At V
CC
= 15V, the
output impedance of the inverter is typically 7
. The high
FIGURE 5. I
CC
vs FREQUENCY
FIGURE 6. NO LOAD I
CC
vs FREQUENCY
FIGURE 7. DELAY AND FALL TIMES vs V
CC
FIGURE 8. RISE TIME vs V
CC
Typical Performance Curves
(Continued)
FREQUENCY (Hz)
I
C
V
CC
= 15V
V
CC
= 5V
C
L
= 1nF
100
10
1
100
μ
A
10K
100K
1M
10M
100
10
1
100mA
10k
100k
1M
10M
V
CC
= 15V
V
CC
= 5V
C
L
= 10pF
FREQUENCY (Hz)
I
C
t
f
t
D1
V
CC
(V)
C
L
= 1nF
t
D
f
,
50
40
30
20
10
0
5
10
15
V
CC
(V)
t
r
= T
D2
C
L
= 10pF
50
40
30
20
10
0
5
10
15
t
r
D
,
ICL7667
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ICL7667EBA+T 功能描述:功率驅(qū)動器IC Dual Power Inverting 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(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube
ICL7667EBA-T 功能描述:功率驅(qū)動器IC Dual Power Inverting 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(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube