- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄363237 > NCV8509PDW18G (ON SEMICONDUCTOR) Sequenced Linear Dual−Voltage Regulator PDF資料下載
參數(shù)資料
| 型號： | NCV8509PDW18G |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | Sequenced Linear Dual−Voltage Regulator |
| 中文描述： | DUAL OUTPUT, FIXED POSITIVE REGULATOR, PDSO16 |
| 封裝： | LEAD FREE, SOIC-16 |
| 文件頁數(shù)： | 13/19頁 |
| 文件大?。?/td> | 198K |
| 代理商： | NCV8509PDW18G |
NCV8509 Series
http://onsemi.com
13
Figure 42. Power Shunt
R
EX
V
IN1
V
IN2
V
OUT2
Voltage
Regulator
Figure 43. Power On Chip
0
0
V
IN
0.2
0.4
0.6
0.8
1.0
1.2
1.8
W
5
10
15
20
25
1.4
1.6
R
EX
> 138
R
EX
= 138
R
EX
< 138
I
OUT2
= 100 mA
Figure 44.
135
Ω
V
IN1
18 V
V
IN2
4.5 V
R
LOAD
V
OUT2
2.5 V
100 mA
135
Ω
V
IN1
6.0 V
V
IN2
3.1 V
R
LOAD
V
OUT2
2.5 V
21.5 mA
135
Ω
V
IN1
6.0 V
V
IN2
4.5 V
R
LOAD
V
OUT2
2.5 V
100 mA
78.5 mA
+
600 mV
Figure 45.
Figure 46.
21.5 mA
100 mA
21.5 mA
Why Use a Power Shunt
The power shunt circuitry helps manage and optimize
power dissipation on the integrated circuit.
Figure 44 shows a 100 mA load. A 135
Ω
resistor
dissipates 1.35 W as shown.
Without the power shunt, the 135
Ω
resistor would run
into head room issues at 6.0 V and would only be able to
drive 21.5 mA as shown in Figure 45 before causing the
2.5 V output to collapse.
Figure 46 shows the power shunt circuitry adding the
current back in at low voltage operation. So the power is
moved off chip at high voltage where it is needed most.
To further clarify, Figure 47 shows the maximum allowed
resistor value (29
Ω
) without the power shunt for 6.0 V
operation.
Figure 48 shows the scenario at high voltage. Only 290 mW
of power is dissipated off chip compared to Figure 44 with
1.35 W.
Figure 47.
29
Ω
V
IN1
18 V
V
IN2
15.1 V
R
LOAD
V
OUT2
2.5 V
100 mA
Figure 48.
29
Ω
V
IN1
6.0 V
V
IN2
3.1 V
R
LOAD
V
OUT2
2.5 V
100 mA
+
600 mV
100 mA
100 mA
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| NCV8509PDW18R2G | Sequenced Linear Dual−Voltage Regulator |
| NCV8509PDW25G | Sequenced Linear Dual−Voltage Regulator |
| NCV8509PDW25R2G | Sequenced Linear Dual−Voltage Regulator |
| NCV8509PDW26G | Sequenced Linear Dual−Voltage Regulator |
| NCV8509PDW26R2G | Sequenced Linear Dual−Voltage Regulator |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| NCV8509PDW18R2 | 功能描述:線性穩(wěn)壓器 - 標(biāo)準(zhǔn) 1.8V 100mA Sequenced RoHS:否 制造商:STMicroelectronics 輸出類型: 極性: 輸出電壓:1.8 V 輸出電流:150 mA 負(fù)載調(diào)節(jié): 最大輸入電壓:5.5 V 線路調(diào)整率: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-323-5L |
| NCV8509PDW18R2G | 功能描述:線性穩(wěn)壓器 - 標(biāo)準(zhǔn) 1.8V 100mA Sequenced Dual RoHS:否 制造商:STMicroelectronics 輸出類型: 極性: 輸出電壓:1.8 V 輸出電流:150 mA 負(fù)載調(diào)節(jié): 最大輸入電壓:5.5 V 線路調(diào)整率: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-323-5L |
| NCV8509PDW25 | 功能描述:線性穩(wěn)壓器 - 標(biāo)準(zhǔn) 2.5V 100mA Sequenced RoHS:否 制造商:STMicroelectronics 輸出類型: 極性: 輸出電壓:1.8 V 輸出電流:150 mA 負(fù)載調(diào)節(jié): 最大輸入電壓:5.5 V 線路調(diào)整率: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-323-5L |
| NCV8509PDW25G | 功能描述:線性穩(wěn)壓器 - 標(biāo)準(zhǔn) 2.5V 100mA Sequenced Dual RoHS:否 制造商:STMicroelectronics 輸出類型: 極性: 輸出電壓:1.8 V 輸出電流:150 mA 負(fù)載調(diào)節(jié): 最大輸入電壓:5.5 V 線路調(diào)整率: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-323-5L |
| NCV8509PDW25R2 | 功能描述:線性穩(wěn)壓器 - 標(biāo)準(zhǔn) 2.5V 100mA Sequenced RoHS:否 制造商:STMicroelectronics 輸出類型: 極性: 輸出電壓:1.8 V 輸出電流:150 mA 負(fù)載調(diào)節(jié): 最大輸入電壓:5.5 V 線路調(diào)整率: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-323-5L |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。