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參數(shù)資料
| 型號： | NCV3843BV |
| 廠商： | ON SEMICONDUCTOR |
| 英文描述： | High Performance Current Mode Controllers(高性能電流模式控制器) |
| 中文描述： | 高性能電流模式控制器（高性能電流模式控制器） |
| 文件頁數(shù)： | 7/20頁 |
| 文件大?。?/td> | 369K |
| 代理商： | NCV3843BV |
UC3842B, UC3843B, UC2842B, UC2843B, NCV3843BV
http://onsemi.com
7
(Load to V
)
T
= 55
C
V
CC
(Load to Ground)
0
V
800
0
I
O
, OUTPUT LOAD CURRENT (mA)
200
400
600
1.0
2.0
3.0
2.0
1.0
0
A
Figure 14. Output Saturation Voltage
versus Load Current
Figure 15. Output Waveform
Figure 16. Output Cross Conduction
Figure 17. Supply Current versus Supply Voltage
GND
A
R
T
= 10 k
V
FB
= 0 V
T
A
= 25
°
C
,
C
I
00
V
CC
, SUPPLY VOLTAGE (V)
10
20
30
40
5
10
15
20
25
U
U
A
CC
80 s Pulsed Load
V
CC
= 30 V
C
L
= 15 pF
T
A
= 25
°
C
V
CC
= 15 V
C
L
= 1.0 nF
T
A
= 25
°
C
50 ns/DIV
100 ns/DIV
1
2
90%
10%
,
O
V
,
C
I
PIN FUNCTION DESCRIPTION
8Pin
14Pin
Function
Description
1
1
Compensation
This pin is the Error Amplifier output and is made available for loop compensation.
2
3
Voltage
Feedback
This is the inverting input of the Error Amplifier. It is normally connected to the switching power
supply output through a resistor divider.
3
5
Current
Sense
A voltage proportional to inductor current is connected to this input. The PWM uses this
information to terminate the output switch conduction.
4
7
R
T
/C
T
The Oscillator frequency and maximum Output duty cycle are programmed by connecting resistor
R
T
to V
ref
and capacitor C
T
to ground. Operation to 500 kHz is possible.
5
GND
This pin is the combined control circuitry and power ground.
6
10
Output
This output directly drives the gate of a power MOSFET. Peak currents up to 1.0 A are sourced
and sunk by this pin.
7
12
V
CC
V
ref
Power
Ground
This pin is the positive supply of the control IC.
8
14
This is the reference output. It provides charging current for capacitor C
T
through resistor R
T
.
This pin is a separate power ground return that is connected back to the power source. It is used
to reduce the effects of switching transient noise on the control circuitry.
8
11
V
C
The Output high state (V
OH
) is set by the voltage applied to this pin. With a separate power
source connection, it can reduce the effects of switching transient noise on the control circuitry.
9
GND
This pin is the control circuitry ground return and is connected back to the power source ground.
2,4,6,1
3
NC
No connection. These pins are not internally connected.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| NCV3843BV_10 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:High Performance Current Mode Controllers |
| NCV3843BVD1R2G | 功能描述:電流型 PWM 控制器 ANA SMPS PWM CNTRLER RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| NCV3843BVDR2 | 功能描述:IC REG CTRLR PWM CM 14-SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:4,000 系列:- PWM 型:電壓模式 輸出數(shù):1 頻率 - 最大:1.5MHz 占空比:66.7% 電源電壓:4.75 V ~ 5.25 V 降壓:是 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 85°C 封裝/外殼:40-VFQFN 裸露焊盤 包裝:帶卷 (TR) |
| NCV3843BVDR2G | 功能描述:電流型 PWM 控制器 ANA PWM SWTCHING REG RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| NCV3845BVD1R2G | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:High Performance Current Mode Controllers |
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