參數(shù)資料
型號： UC3844AD
廠商： MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP
元件分類： 穩(wěn)壓器
英文描述： CURRENT MODE PWM CONTROLLER
中文描述： 1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO14
封裝： ROHS COMPLIANT, PLASTIC, SOIC-14
文件頁數(shù)： 3/8頁
文件大小： 463K
代理商： UC3844AD
PARAMETER
TEST CONDITIONS
UC1842/3/4/5
UC2842/3/4/5
MIN
TYP
UC3842/3/4/5
UNITS
MAX
MIN
TYP
MAX
Reference Section
Output Voltage
Line Regulation
Load Regulation
Temp. Stability
Total Output Variation
Output Noise Voltage
Long Term Stability
Output Short Circuit
Oscillator Section
Initial Accuracy
Voltage Stability
Temp. Stability
Amplitude
Error Amp Section
Input Voltage
Input Bias Current
A
VOL
Unity Gain Bandwidth
PSRR
Output Sink Current
Output Source Current
V
OUT
High
V
OUT
Low
Current Sense Section
Gain
Maximum Input Signal
PSRR
Input Bias Current
Delay to Output
T
J
= 25°C, I
O
= 1mA
12
≤
V
IN
≤
25V
1
≤
I
0
≤
20mA
(Note 2) (Note 7)
Line, Load, Temp. (Note 2)
10Hz
≤
f
≤
10kHz, T
J
= 25°C (Note2)
T
A
= 125°C, 1000Hrs. (Note 2)
4.95
5.00
6
6
0.2
5.05
20
25
0.4
5.1
4.90
5.00
6
6
0.2
5.10
20
25
0.4
5.18
V
mV
mV
mV/°C
V
μ
V
mV
mA
4.9
4.82
50
5
-100
50
5
-100
25
-180
25
-180
-30
-30
T
J
= 25°C (Note 6)
12
≤
V
CC
≤
25V
T
MIN
≤
T
A
≤
T
MAX
(Note 2)
V
PIN 4
peak to peak (Note 2)
47
52
0.2
5
1.7
57
1
47
52
0.2
5
1.7
57
1
kHz
%
%
V
V
PIN 1
= 2.5V
2.45
2.50
-0.3
90
1
70
6
-0.8
6
0.7
2.55
-1
2.42
2.50
-0.3
90
1
70
6
-0.8
6
0.7
2.58
-2
V
μ
A
dB
MHz
dB
mA
mA
V
V
2
≤
V
O
≤
4V
(Note 2) T
J
= 25°C
12
≤
V
CC
≤
25V
V
PIN 2
= 2.7V, V
PIN 1
= 1.1V
V
PIN 2
= 2.3V, V
PIN 1
= 5V
V
PIN 2
= 2.3V, R
L
= 15k to ground
V
PIN 2
= 2.7V, R
L
= 15k to Pin 8
65
0.7
60
2
-0.5
5
65
0.7
60
2
-0.5
5
1.1
1.1
(Notes 3 and 4)
V
PIN 1
= 5V (Note 3)
12
≤
V
CC
≤
25V (Note 3) (Note 2)
2.85
0.9
3
1
3.15
1.1
2.85
0.9
3
1
3.15
1.1
V/V
V
dB
μ
A
ns
70
-2
150
70
-2
150
-10
300
-10
300
V
PIN 3
= 0 to 2V (Note 2)
UC1842/3/4/5
UC2842/3/4/5
UC3842/3/4/5
ELECTRICAL CHARACTERISTICS:
Unless otherwise stated, these specifications apply for -55°C
≤
T
A
≤
125°C for the
UC184X; -40°C
≤
T
A
≤
85°C for the UC284X; 0
°
C
≤
T
A
≤
70°C for the 384X; V
CC
=
15V (Note 5); R
T
= 10k; C
T
=3.3nF, T
A
=T
J.
Note 2: These parameters, although guaranteed, are not 100% tested in production.
Note 3: Parameter measured at trip point of latch with V
PIN 2
= 0.
Note 4: Gain defined as
A
=
V
PIN1
V
PIN3
, 0
≤
V
PIN3
≤
0.8V
Note 5: Adjust V
CC
above the start threshold before setting at 15V.
Note 6: Output frequency equals oscillator frequency for the UC1842 and UC1843.
Output frequency is one half oscillator frequency for the UC1844 and UC1845.
Note 7: Temperature stability, sometimes referred to as average temperature coefficient, is described by the equation:
TempStability
=
V
REF
(
max
)
V
REF
(
min
)
T
J
(
max
)
T
J
(
min
)
V
REF
(max) and V
REF
(min) are the maximum and minimum reference voltages measured over the appropriate
temperature range. Note that the extremes in voltage do not necessarily occur at the extremes in temperature.
3
Powered by ICminer.com Electronic-Library Service CopyRight 2003
相關(guān)PDF資料
PDF描述
UC3844ADM CURRENT MODE PWM CONTROLLER
UC3844AM CURRENT MODE PWM CONTROLLER
UC3842AD CURRENT MODE PWM CONTROLLER
UC3842ADM CURRENT MODE PWM CONTROLLER
UC3842AM CURRENT MODE PWM CONTROLLER
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
UC3844AD 制造商:Texas Instruments 功能描述:Pulse Width Modulation (PWM) Controller 制造商:Texas Instruments 功能描述:IC, CURRENT MODE PWM CTRL, 25V, SOIC-14
UC3844AD1 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 RO 511-UC3844BD 9/04 RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
UC3844AD8 功能描述:電流型 PWM 控制器 Current Mode RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時間: 下降時間: 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
UC3844AD8 制造商:Texas Instruments 功能描述:PWM CONTROLLER SMD 3844 SOIC8
UC3844AD8 制造商:Texas Instruments 功能描述:IC CURRENT MODE PWM CTRL 25V 8-SOIC 制造商:Texas Instruments 功能描述:IC, CURRENT MODE PWM CTRL, 25V, 8-SOIC
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*