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參數(shù)資料
| 型號(hào)： | MIC833BM5 TR |
| 廠商： | Micrel Inc |
| 文件頁(yè)數(shù)： | 7/8頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC COMPARATOR LATCH REF SOT23-5 |
| 標(biāo)準(zhǔn)包裝： | 3,000 |
| 系列： | IttyBitty® |
| 類型： | 帶電壓基準(zhǔn) |
| 元件數(shù)： | 2 |
| 輸出類型： | 開(kāi)路漏極 |
| 電壓 - 電源，單路/雙路(±)： | 1.5 V ~ 5.5 V |
| 電流 - 輸出（標(biāo)準(zhǔn)）： | 20mA |
| 電流 - 靜態(tài)（最大值）： | 2µA |
| 傳輸延遲（最大）： | 5µs |
| 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) |
| 其它名稱： | MIC833BM5TR |
Micrel, Inc.
MIC833
July 2012
7
M9999-070912-B
Example Application
The battery charger of Figure 3 uses the MIC833 to
detect a low-battery voltage condition (VDIS) and enables
a constant-current source (ICHG). Charging current is
enabled until a charged-battery voltage condition (VCHG)
is detected; at which time the charging-current source is
disabled.
Diode D1 was added to Figure 3 to ensure the disabled
current source does not draw battery current. Whether or
not D1 is required is a function of the output stage of the
current source and how it is disabled.
The circuitry of Figure 3 is deliberately generalized to
imply flexibility of application. Depending on the
application, it may not be possibly to power the MIC833
from the charger supply voltage, see Note 2. It may be
necessary to provide a separate voltage regulator, or a
resistive voltage divider to reduce the VDD applied to the
MIC833. The part can be supplied by the battery voltage
(VBAT) if this voltage is never lower than 1.5V, the
minimum operating VDD of the part.
Figure 2. Input Transient Response
Initialization Behavior
When the MIC833 is powered up, the comparators and
latch become active before the reference voltage
reaches its final value. In most applications, this
presents no problems. However, the user should be
aware of this: when applying power to the part, if the
input voltage is between the two thresholds, the output
of the part will be high because input HTH will have been
higher than the 1.24V reference during initialization.
Voltage thresholds, VDIS and VCHG, are programmed as
described in the appropriate above paragraph.
It is not very likely the part would be powered up in this
state; it is more likely the same power supply will power
the part and develop its inputs. However, if the above-
described condition should occur, the next HTH
threshold crossing would not be processed; that is, the
latch would have been already set. The next valid input
condition would have to be a crossing of the LTH
threshold, which resets the latch, after which “normal”
operation is restored.
Figure 3. Battery Charger
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MIC833YM5 TR | 功能描述:校驗(yàn)器 IC 1 A Undervoltage Comparator with 1.5% 1.24V Reference, Adjustable Hysteresis, Open-Drain Output in SOT23-5 (Lead Free) RoHS:否 制造商:STMicroelectronics 產(chǎn)品: 比較器類型: 通道數(shù)量: 輸出類型:Push-Pull 電源電壓-最大:5.5 V 電源電壓-最小:1.1 V 補(bǔ)償電壓（最大值）:6 mV 電源電流（最大值）:1350 nA 響應(yīng)時(shí)間: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SC-70-5 封裝:Reel |
| MIC833YM5TR | 制造商:Micrel Inc 功能描述: 制造商:RF Micro Devices Inc 功能描述: |
| MIC833YM5-TR | 功能描述:Comparator with Voltage Reference Open Drain SOT-23-5 制造商:microchip technology 系列:IttyBitty? 包裝:剪切帶（CT） 零件狀態(tài):有效 類型:帶電壓基準(zhǔn) 元件數(shù):2 輸出類型:開(kāi)路漏極 電壓 - 電源，單/雙（±）:1.5 V ~ 5.5 V 電壓 - 輸入失調(diào)（最大值）:- 電流 - 輸入偏置（最大值）:- 電流 - 輸出（典型值）:20mA 電流 - 靜態(tài)（最大值）:- CMRR，PSRR（典型值）:- 傳播延遲（最大值）:5μs 滯后:- 工作溫度:-40°C ~ 85°C 封裝/外殼:SC-74A，SOT-753 安裝類型:表面貼裝 供應(yīng)商器件封裝:SOT-23-5 標(biāo)準(zhǔn)包裝:1 |
| MIC834 | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:Comparator with Reference Advance Information |
| MIC834BM5 | 制造商:Micrel Inc 功能描述: |
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