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參數(shù)資料
| 型號： | ICL7665BCJA |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | Microprocessor Voltage Monitor with |
| 中文描述： | 2-CHANNEL POWER SUPPLY SUPPORT CKT, CDIP8 |
| 封裝： | 0.300 INCH, CERAMIC, DIP-8 |
| 文件頁數(shù)： | 6/12頁 |
| 文件大小： | 114K |
| 代理商： | ICL7665BCJA |
I
_______________Detailed Desc ription
As shown in the block diagram of Figure 2, the Maxim
ICL7665 combines a 1.3V reference with two com-
parators, two open-drain N-channel outputs, and two
open-drain P-channel hysteresis outputs. The refer-
ence and comparator are very low-power linear CMOS
circuits, with a total operating current of 10
μ
A maxi-
mum, 3
μ
A typical. The N-channel outputs can sink
greater than 10mA, but are unable to source any cur-
rent. These outputs are suitable for wire-OR connections
and are capable of driving TTL inputs when an external
pull-up resistor is added.
The ICL7665 Truth Table is shown in Table 1. OUT1 is
an inverting output; all other outputs are noninverting.
HYST1 and HYST2 are P-channel current sources
whose sources are connected to V+. OUT1 and OUT2
are N-channel current sinks with their sources connect-
ed to ground. Both OUT1 and OUT2 can drive at least
one TTL load with a V
OL
of 0.4V.
In spite of the very low operating current, the ICL7665
has a typical propagation delay of only 75
μ
s. Since the
comparator input bias current and the output leakages
are very low, high-impedance external resistors can be
used. This design feature minimizes both the total sup-
ply current used and loading on the voltage source that
is being monitored.
Mic roproc essor Voltage Monitor with
Dual Over/Undervoltage Detec tion
6
_______________________________________________________________________________________
Figure 1. Test Circuit
HYST2 = OFF = LOW
OUT2 = ON = LOW
V
SET2
< 1.3V
HYST2 = ON = HI
OUT2 = OFF = HI
V
SET2
> 1.3V
HYST1 = OFF = LOW
OUT1 = OFF = HI
V
SET1
< 1.3V
HYST1 = ON = HI
OUT1 = ON = LOW
V
SET1
> 1.3V
HYSTERESIS
OUTPUT
INPUT*
Table 1. ICL7665 Truth Table
V+
HYST1
HYST2
OUT1
OUT2
TOV+
SET2
SET1
1.3V
BANDGAP
REFERENCE
Figure 2. Block Diagram
1
2
3
4
8
7
6
5
ICL7665
OUT1
HYST1
SET1
GND
V+
OUT2
SET2
HSYT2
12pF
12pF
12pF
12pF
OUT1
HYST1
OUT2
HSYT2
4.7k
4.7k
V+
1.6V
1.0V
INPUT
20k
20k
*See Electrical Characteristics
OUT1 is an inverting output; all others are noninverting. OUT1
and OUT2 are open-drain, N-channel current sinks. HYST1
and HYST2 are open-drain, P-channel current sinks.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| ICL7665BCPA | 功能描述:電壓監(jiān)測器/監(jiān)控器 Integrated Circuits (ICs) RoHS:否 制造商:Texas Instruments 監(jiān)測電壓數(shù):2 監(jiān)測電壓:Adjustable 輸出類型:Open Drain 欠電壓閾值: 過電壓閾值: 準確性:1 % 工作電源電壓:1.5 V to 6.5 V 工作電源電流:1.8 uA 最大工作溫度:+ 125 C 封裝 / 箱體:SON-6 安裝風格:SMD/SMT |
| ICL7665BCPA+ | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| ICL7665BCSA | 功能描述:電壓監(jiān)測器/監(jiān)控器 Integrated Circuits (ICs) RoHS:否 制造商:Texas Instruments 監(jiān)測電壓數(shù):2 監(jiān)測電壓:Adjustable 輸出類型:Open Drain 欠電壓閾值: 過電壓閾值: 準確性:1 % 工作電源電壓:1.5 V to 6.5 V 工作電源電流:1.8 uA 最大工作溫度:+ 125 C 封裝 / 箱體:SON-6 安裝風格:SMD/SMT |
| ICL7665BCSA+ | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| ICL7665BCSA+T | 功能描述:電壓監(jiān)測器/監(jiān)控器 RoHS:否 制造商:Texas Instruments 監(jiān)測電壓數(shù):2 監(jiān)測電壓:Adjustable 輸出類型:Open Drain 欠電壓閾值: 過電壓閾值: 準確性:1 % 工作電源電壓:1.5 V to 6.5 V 工作電源電流:1.8 uA 最大工作溫度:+ 125 C 封裝 / 箱體:SON-6 安裝風格:SMD/SMT |
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