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参数资料
| 型号： | R3134Q23EC2-TR-FE |
| 厂商： | RICOH COMPANY LTD |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO5 |
| 封装： | HALOGEN FREE AND ROHS COMPLIANT, SC-88A, 5 PIN |
| 文件页数： | 4/23页 |
| 文件大小： | 300K |
| 代理商： | R3134Q23EC2-TR-FE |
R3134x
12
OPERATION
Operation of R3134xxxEA
Vref
Ra
Rb
VDD
DOUT
GND
Nch
Comparator
Delay
Circuit
DOUT pin should be pulled-up to
an external voltage level.
Block Diagram
13
5
GND
AB
tdelay
24
treset
Supply Voltage (VDD)
Output Voltage
(VOUT)
Detector Threshold
=Released Voltage
Pull-up Voltage
Minimum Operating
Voltage
VDET
VDDL
Detect
Delay Time
Output
Delay Time
Operation Diagram
Explanation of operation
Step 1. The output voltage is equal to the pull-up voltage.
Step 2. At Point "A", Vref
≥ VDD×Rb/(Ra+Rb) is true, as a result, the output of comparator is reversed from "L" to
"H", therefore the output voltage becomes the GND level. The voltage level of Point A means a detector
threshold voltage (VDET).
Step 3. When the supply voltage is lower than the minimum operating voltage, the operation of the output
transistor becomes indefinite. The output voltage is equal to the pull-up voltage.
Step 4. The output voltage is equal to the GND level.
Step 5. At Point "B", Vref
≤ VDD×Rb/(Ra+Rb) is true, as a result, the output of comparator is reversed from "H" to
"L", then the output voltage is equal to the pull-up voltage. The voltage level of Point B means a released
voltage (VDET).
) There is no hysteresis range between the detector threshold and the released voltage.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| R3134R | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Optoelectronic |
| R3135 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Optoelectronic |
| R3135P | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Optoelectronic |
| R3136 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Optoelectronic |
| R3136P | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Optoelectronic |
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