- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄166429 > BD4723G 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO5 PDF資料下載
參數(shù)資料
| 型號： | BD4723G |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO5 |
| 封裝： | ROHS COMPLIANT, SSOP-5 |
| 文件頁數(shù)： | 4/8頁 |
| 文件大小： | 282K |
| 代理商： | BD4723G |
Technical Note
4/7
BD47□□G series
www.rohm.com
2010.01 - Rev.B
2010 ROHM Co., Ltd. All rights reserved.
Explanation of Operation
BD47□□G series has the detection voltages and release voltages as threshold voltages and, as the voltages applied to the
input reach their respective threshold voltages, the output switches from “High” to “Low” and from “Low” to “High”. The
release voltage has a hysteresis that is the detection voltage +50mV (Typ.), preventing chattering in the output. When the
input is greater than the release voltage, the output is in a “High” state. When the input is lowered from that state, the output
switches to “Low” on the detection voltage. When the input is less than the detection voltage, the output is in a “Low” state.
When the input is raised from that state, the output switches to “High” with the release voltage. Additionally, at least 0.85V is
required for the circuit to operate fully. When the input falls below the operating limit voltage, the output becomes unsettled.
1
When the power supply is turned on, the output is unsettled from after over the operating limit voltage (VOPL) until
TPHL. There fore it is possible that the reset signal is not outputted when the rise time of VDD is faster than TPHL.
2
When VDD is greater than VOPL but less than the reset release voltage (VS + ΔVS), the output voltages will switch to
Low.
3
If VDD exceeds the reset release voltage (VS + ΔVS), then VOUT switches from L to H.
4
If VDD drops below the detection voltage (VS) when the power supply is powered down or when there is a power
supply fluctuation, VOUT switches to L (with a delay of TPHL).
5
The potential difference between the detection voltage and the release voltage is known as the hysteresis width (ΔVS).
The system is designed such that the output does not flip-flop with power supply fluctuations within this hysteresis width,
preventing malfunctions due to noise.
<Precautions>
Please be aware that when there is resistance on the power supply line, the detection voltage varies with voltage drops
caused by the IC current consumption.
Please connect a capacitor between VCC and GND when the power supply line has high impedance.
VDD
VS+ΔVS
VS
VOPL
0V
TPHL
①
②
VOUT
TPLH
TPHL
TPLH
③
④
VOL
VOH
VDD
⑤
Fig.11 Timing Waveform
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| BD5338FVE | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO5 |
| BD6066EKN | Step-up DC/DC converter for middle size LCD panel |
| BD6066GU | Step-up DC/DC converter for middle size LCD panel |
| BD6068GUT | Synchronous rectification Step-up DC/DC converter for middle phone |
| BD6231HFP | BRUSH DC MOTOR CONTROLLER, 1 A, PSSO8 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| BD4723G-TR | 功能描述:電壓監(jiān)測器/監(jiān)控器 RESET DETEC VOLT 2.3V 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(zhǔn)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(fēng)格:SMD/SMT |
| BD4724 | 制造商:ROHM 制造商全稱:Rohm 功能描述:Bipolar Voltage Detector IC |
| BD4724G | 制造商:ROHM 制造商全稱:Rohm 功能描述:System Reset IC |
| BD4724G-TR | 功能描述:電壓監(jiān)測器/監(jiān)控器 RESET DETEC VOLT 2.4V 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(zhǔn)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(fēng)格:SMD/SMT |
| BD4725 | 制造商:ROHM 制造商全稱:Rohm 功能描述:RESET IC |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。