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參數資料
| 型號： | MAX9065EUK+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數： | 5/9頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC COMPARATOR WINDOW SOT23-5 |
| 產品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 2,500 |
| 類型： | 窗口 |
| 元件數： | 1 |
| 輸出類型： | 推挽式 |
| 電壓 - 電源，單路/雙路(±)： | 1 V ~ 5.5 V |
| 電流 - 靜態(tài)（最大值）： | 1.35µA |
| CMRR, PSRR（標準）： | 53dB PSRR |
| 傳輸延遲（最大）： | 25µs |
| 工作溫度： | -40°C ~ 85°C |
| 封裝/外殼： | SC-74A，SOT-753 |
| 安裝類型： | 表面貼裝 |
| 包裝： | 帶卷 (TR) |
Detailed Description
The MAX9065 is an extremely small window compara-
tor designed for compact, low-current applications, fea-
turing a supply current of less than 1A (max).
Operation
At the heart of the MAX9065 are two comparators, a
resistor-divider with a disconnect switch, a 200mV ref-
erence, digital logic circuitry, and an output stage (see
the
Typical Operating Circuit).
The digital logic circuitry and the output stage together
behave like an AND gate. The gate’s inputs are the out-
puts of the two comparators. When either comparator’s
output is low, the output asserts low. When both com-
parator’s outputs are high, the output asserts high.
When power is applied to VCC, the n-channel FET at
the bottom of the resistor-divider is turned on. The
resistor-divider provides two voltages, VUPPER and
VLOWER, for comparison with an internal 0.2V reference
voltage. When the input voltage exceeds 4.2V, VUPPER
is greater than 0.2V, causing the output to assert low.
When the input voltage falls below 3.0V, VLOWER is less
than 0.2V, causing the output also to assert low. With
the input voltage between 3.0V and 4.2V, the output
asserts high, indicating that the input voltage is within
the desired range. Table 1 summarizes the operation of
the MAX9065.
When VCC goes to 0V, the n-channel FET is turned off,
eliminating the resistor-divider as a leakage path for
current.
Applications
The MAX9065 is designed specifically to monitor the
voltage on a single lithium battery. Keeping the voltage
on a lithium battery within a tight range is important to
prevent damage to the battery. Specifically, ensuring
that the battery’s voltage neither exceeds 4.2V nor falls
below 3.0V lengthens the lifetime of the battery and
avoids any hazardous battery conditions.
Hysteresis
There are four trip points for hysteresis. See Figure 1.
Power-Supply Considerations
Bypass VCC with a 0.1F capacitor to ground.
Chip Information
PROCESS: BiCMOS
MAX9065
Ultra-Small, Low-Power, Window Comparator
in 4 UCSP and 5 SOT23
_______________________________________________________________________________________
5
Pin Description
PIN
SOT23
UCSP
NAME
FUNCTION
1B1
VCC
External Supply Input. Bypass
to ground with a 0.1F bypass
capacitor.
2, 3
B2
GND
Ground
4
A2
IN
Window Comparator Input
5
A1
OUT
Push-Pull Output
INPUT VOLTAGE
OUTPUT
VIN > 4.2V
Low
3.0V < VIN < 4.2V
High
VIN < 3.0V
Low
Table 1. MAX9065 Operation
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| MAX9065EVKIT+ | 功能描述:其他開發(fā)工具 MAX9060-65 Eval Kit RoHS:否 制造商:Parallax 產品:ELEV-8 Hex Upgrade Kits 類型:Robotics 工具用于評估:ELEV-8 Quadcopter 工作電源電壓: |
| MAX906C/D | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:High-Speed, Positive Edge-Triggered, ECS-Compatible Voltage Comparators |
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