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參數(shù)資料
| 型號(hào)： | NCV4949PDG |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 固定正電壓?jiǎn)温份敵鯨DO穩(wěn)壓器 |
| 英文描述： | 100 mA, 5.0V, LDO w/ Reset, Delay, and Early Warning |
| 中文描述： | 5 V FIXED POSITIVE LDO REGULATOR, 0.5 V DROPOUT, PDSO8 |
| 封裝： | LEAD FREE, PLASTIC, SOIC-8 |
| 文件頁(yè)數(shù)： | 9/12頁(yè) |
| 文件大?。?/td> | 182K |
| 代理商： | NCV4949PDG |
L4949, NCV4949
http://onsemi.com
6
APPLICATION INFORMATION
Supply Voltage Transient
High supply voltage transients can cause a reset output
signal perturbation. For supply voltages greater than 8.0 V
the circuit shows a high immunity of the reset output against
supply transients of more than 100 V/
ms. For supply voltages
less than 8.0 V supply transients of more than 0.4 V/
ms can
cause a reset signal perturbation. To improve the transient
behavior for supply voltages less than 8.0 V a capacitor at
Pin 3 can be used. A capacitor at Pin 3 (C3
≤ 1.0 mF) also
reduces the output noise.
So
VZ
(optional)
Vout
Vbat
Cs
CO
C3
RSO 10 kW
Regulator
1.23 Vref
2.0 V
2.0
mA
Reset
1.23 V
Sense
GND
Reset
Si
VCC
CT
38
4
6
7
5
2
1
VCC
+
-
+
-
Preregulator
6.0 V
10 k
W
Figure 14. Application Schematic
NOTE: 1. For stability: Cs ≥ 1.0 mF, CO ≥ 4.7 mF, ESR < 10 W at 10 kHz
2. Recommended for application: Cs = CO = 10 mF
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| NCV4949PDR2G | 功能描述:低壓差穩(wěn)壓器 - LDO 100mA 5V LDO VO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
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| NCV494BDR2G | 功能描述:電壓模式 PWM 控制器 Switchmode PWM RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開(kāi)關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
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