參數(shù)資料
型號(hào)： NCV2931
廠商： ON SEMICONDUCTOR
英文描述： 100 mA, Adjustable Output, LDO Voltage Regulator with 60 V Load Dump Protection(100mA，可調(diào)輸出，帶有60V負(fù)載保護(hù)的低壓差穩(wěn)壓器)
中文描述： 百毫安，可調(diào)輸出，LDO穩(wěn)壓器與60伏特拋負(fù)載保護(hù)（100mA的，可調(diào)輸出，帶有60V的負(fù)載保護(hù)的低壓差穩(wěn)壓器）
文件頁(yè)數(shù)： 9/23頁(yè)
文件大小： 254K
代理商： NCV2931
LM2931, NCV2931 Series
http://onsemi.com
9
Figure 17. Fixed Output Regulator
Figure 18. Adjustable Output Regulator
Figure 19. (5.0 A) Low Differential
Voltage Regulator
Figure 20. Current Boost Regulator with
Short Circuit Projection
Figure 21. Constant Intensity Lamp Flasher
V
in
Input
Output
V
out
C
O
I
B
GND
C
in
0.1
LM2931
5.0
Fixed
Output
Switch Position 1 = Output On", 2 = Output Off"
LM2931C
Adjustable
Output
V
in
C
in
0.1
V
out
C
O
Output
Input
51 k
1
2
Output
Inhibit
Adjust
GND
I
Adj
R
1
R
2
I
B
The LM2931 series can be current boosted with a PNP transistor. The
D45VH7, on a heatsink, will provide an output current of 5.0 A with an input
to output voltage differential of approximately 1.0 V. Resistor R in
conjunction with the V
BE
of the PNP determines when the pass transistor
begins conducting. This circuit is not short circuit proof.
Input
≥
6.0 V
D45VH7
5.0 V @ 5.0 A
Output
100
+
100
+
68
LM2931
5.0
LM2931C
Input
6.4 V to 30 V
2.0 k
8.2 k
100
+
CM
#345
100
+
33 k
6.2 V
f
osc
= 2.2 Hz
0
22.5k
R1R2
R1
R2
Vout
Vref
1
R2
R1
IAdjR2
R
The circuit of Figure 19 can be modified to provide supply protection against
short circuits by adding the current sense resistor R
SC
and an additional PNP
transistor. The current sensing PNP must be capable of handling the short
circuit current of the LM2931. Safe operating area of both transistors must be
considered under worst case conditions.
Input
R
R
SC
Output
LM2931
5.0
100
100
+
+
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
NCV2931/A 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:AC-DC Offline Switching Controllers/Regulators
NCV2931ACD2TR4G 功能描述:低壓差控制器 - LDO RoHS:否 制造商:Micrel 最大輸入電壓:5.5 V 輸出電壓:Adjustable 輸出電流:10 mA 負(fù)載調(diào)節(jié): 輸出類型:Adjustable, Fixed 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-23-6
NCV2931ACDR2 功能描述:低壓差穩(wěn)壓器 - LDO 3-24V ADJ 100mA 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
NCV2931ACDR2G 功能描述:低壓差穩(wěn)壓器 - LDO 100mA ADJ LDO VREG ANA 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
NCV2931ACDRG 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:100 mA, Adjustable Output, LDO Voltage Regulator with 60 V Load Dump Protection
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