參數(shù)資料
型號(hào)： 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(yè)數(shù)： 3/20頁(yè)
文件大小： 369K
代理商： NCV3843BV
UC3842B, UC3843B, UC2842B, UC2843B, NCV3843BV
http://onsemi.com
3
ELECTRICAL CHARACTERISTICS
(V
CC
= 15 V [Note 1], R
T
= 10 k, C
T
= 3.3 nF. For typical values T
A
= 25
°
C, for min/max values
T
A
is the operating ambient temperature range that applies [Note 2], unless otherwise noted.)
UC284XB
UC384XB, XBV
Characteristics
Symbol
Min
Typ
Max
Min
Typ
Max
Unit
REFERENCE SECTION
Reference Output Voltage (I
O
= 1.0 mA, T
J
= 25
°
C)
Line Regulation (V
CC
= 12 V to 25 V)
Load Regulation (I
O
= 1.0 mA to 20 mA)
Temperature Stability
V
ref
Reg
line
Reg
load
T
S
V
ref
V
n
S
4.95
5.0
5.05
4.9
5.0
5.1
V
2.0
20
2.0
20
mV
3.0
25
3.0
25
mV
mV/
°
C
V
0.2
0.2
Total Output Variation over Line, Load, and Temperature
Output Noise Voltage (f = 10 Hz to 10 kHz, T
J
= 25
°
C)
Long Term Stability (T
A
= 125
°
C for 1000 Hours)
Output Short Circuit Current
4.9
5.1
4.82
5.18
50
50
V
5.0
5.0
mV
I
SC
30
85
180
30
85
180
mA
OSCILLATOR SECTION
Frequency
T
J
= 25
°
C
T
A
= T
low
to T
high
T
J
= 25
°
C (R
T
= 6.2 k, C
T
= 1.0 nF)
Frequency Change with Voltage (V
CC
= 12 V to 25 V)
Frequency Change with Temperature, T
A
= T
low
to T
high
Oscillator Voltage Swing (PeaktoPeak)
f
OSC
49
48
225
52
250
55
56
275
49
48
225
52
250
55
56
275
kHz
f
OSC
/ V
f
OSC
/ T
V
OSC
I
dischg
0.2
1.0
0.2
1.0
%
1.0
0.5
%
1.6
1.6
V
Discharge Current (V
OSC
= 2.0 V)
T
J
= 25
°
C, T
A
= T
low
to T
high
UC284XB, UC384XB
T
A
= T
low
to T
high
UC384XBV
7.8
7.5
8.3
8.8
8.8
7.8
7.6
7.2
8.3
8.8
8.8
8.8
mA
ERROR AMPLIFIER SECTION
Voltage Feedback Input (V
O
= 2.5 V)
Input Bias Current (V
FB
= 5.0 V)
Open Loop Voltage Gain (V
O
= 2.0 V to 4.0 V)
Unity Gain Bandwidth (T
J
= 25
°
C)
Power Supply Rejection Ratio (V
CC
= 12 V to 25 V)
Output Current
Sink (V
O
= 1.1 V, V
FB
= 2.7 V)
Source (V
O
= 5.0 V, V
FB
= 2.3 V)
Output Voltage Swing
High State (R
L
= 15 k to ground, V
FB
= 2.3 V)
Low State (R
L
= 15 k to V
ref
, V
FB
= 2.7 V)
V
FB
I
IB
A
VOL
BW
2.45
2.5
2.55
2.42
2.5
2.58
V
0.1
1.0
0.1
2.0
A
65
90
65
90
dB
0.7
1.0
0.7
1.0
MHz
PSRR
60
70
60
70
dB
I
Sink
I
Source
2.0
0.5
12
1.0
2.0
0.5
12
1.0
mA
UC284XB, UC384XB
UC384XBV
V
OH
V
OL
5.0
6.2
0.8
1.1
5.0
6.2
0.8
0.8
1.1
1.2
V
CURRENT SENSE SECTION
Current Sense Input Voltage Gain (Notes 3 and 4)
UC284XB, UC384XB
UC384XBV
A
V
2.85
3.0
3.15
2.85
2.85
3.0
3.0
3.15
3.25
V/V
Maximum Current Sense Input Threshold (Note 3)
UC284XB, UC384XB
UC384XBV
V
th
0.9
1.0
1.1
0.9
0.85
1.0
1.0
1.1
1.1
V
Power Supply Rejection Ratio (V
CC
= 12 V to 25 V, Note 3)
Input Bias Current
PSRR
70
70
dB
I
IB
2.0
10
2.0
10
A
Propagation Delay (Current Sense Input to Output)
1. Adjust V
CC
above the Startup threshold before setting to 15 V.
2. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible.
T
low
= 0
°
C for UC3842B, UC3843B; 25
°
C for UC2842B, UC2843B; 40
°
C for UC3842BV, UC3843BV
T
= +70
°
C for UC3842B, UC3843B; +85
°
C for UC2842B, UC2843B; +105
°
C for UC3842BV, UC3843BV
NCV3843BV: T
low
= 40
°
C, T
high
= +105
°
C. Guaranteed by design. NCV prefix is for automotive and other applications requiring site and
change control.
3. This parameter is measured at the latch trip point with V
FB
= 0 V.
4. Comparator gain is defined as: A
V
V Current Sense Input
t
PLH(In/Out)
150
300
150
300
ns
V Output Compensation
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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(wú) 回掃:無(wú) 反相:無(wú) 倍增器:無(wú) 除法器:無(wú) Cuk:無(wú) 隔離:無(wú) 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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