參數(shù)資料
型號: MIC834BM5 TR
廠商: Micrel Inc
文件頁數(shù): 4/8頁
文件大?。?/td> 0K
描述: IC COMPARATOR W/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): 1
輸出類型: 開路漏極
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): 3µA
傳輸延遲(最大): 12µs
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: MIC834BM5TR
MIC834BM5TR-ND
MIC834
Micrel
MIC834
4
September 2001
Functional Description
The MIC834 monitors the input voltage and detects when it
is higher than a programmed level (plus V
HYST). This condi-
tion asserts the active-high output. An external pull-up resis-
tor is used to produce a logic-one output. When the input
voltage falls below the programmed threshold (V
INP <VREF),
the output stage is on.
Voltage Low Output
The voltage-low output (OUT) is an active-high, open-drain
output which sinks current when the MIC834 detects a low
input voltage.
Block Diagram
GND
VIN
OUT
1.24V
Bandgap
Reference
High-Voltage
Detect
INP
VTH
MIC834
4
2
1
5
VDD
VDD
Trip Points
Input voltage is monitored by a comparator via a voltage
divider network. The divided voltage is compared to an
internal reference voltage. When the voltage at the input pin
INP exceeds the internal reference voltage (plus V
HYST), the
output is pulled high by an external resistor.
V
HYST is typically 23mV, and is added to the programmed
threshold voltage for positive-going inputs. Decreasing in-
puts trip at the user-programmed threshold voltage.
The tolerance of the switching threshold on the falling edge
is equal to the tolerance of just the voltage reference. The
tolerance of the switching threshold on the rising edge is
equal to the tolerance of the voltage reference
plus the
tolerance of the hysteresis voltage.
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