參數(shù)資料
型號： UC2845AQTR
廠商： Texas Instruments, Inc.
英文描述： OMNIFET II: FULLY AUTOPROTECTED POWER MOSFET
中文描述： 電流模式開關(guān)電源控制器
文件頁數(shù)： 3/7頁
文件大?。?/td> 517K
代理商： UC2845AQTR
PARAMETER
TEST CONDITIONS
UC184xA\UC284xA
MIN.
TYP.
UC384xA
TYP.
UNITS
MAX.
MIN.
MAX.
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
Output Section
Output Low Level
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
T
J
= 25°C (Note 2)
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
(Note 3, Note 4)
V
PIN 1
= 5V (Note 3)
12
≤
V
CC
≤
25V (Note 3)
2.85
0.9
3
1
70
-2
150
3.15
1.1
2.85
0.9
3
1
70
-2
150
3.15
1.1
V/V
V
dB
μ
A
ns
-10
300
-10
300
V
PIN 3
= 0 to 2V (Note 2)
I
SINK
= 20mA
I
SINK
= 200mA
I
SOURCE
= 20mA
I
SOURCE
= 200mA
T
J
= 25°C, C
L
= 1nF (Note 2)
T
J
= 25°C, C
L
= 1nF (Note 2)
V
CC
= 5V, I
SINK
= 10mA
0.1
15
13.5
13.5
50
50
0.7
0.4
2.2
0.1
15
13.5
13.5
50
50
0.7
0.4
2.2
V
V
V
V
ns
ns
V
Output High Level
13
12
13
12
Rise Time
Fall Time
UVLO Saturation
Under-Voltage Lockout Section
Start Threshold
150
150
1.2
150
150
1.2
x842A/4A
x843A/5A
x842A/4A
x843A/5A
15
7.8
9
7.0
16
8.4
10
7.6
17
9.0
11
8.2
14.5
7.8
8.5
7.0
16
8.4
10
7.6
17.5
9.0
11.5
8.2
V
V
V
V
Min. Operation Voltage After
Turn On
PWM Section
Maximum Duty Cycle
x842A/3A
x844A/5A
94
47
96
48
100
50
0
94
47
96
48
100
50
0
%
%
%
Minimum Duty Cycle
Total Standby Current
Start-Up Current
Operating Supply Current
V
CC
Zener Voltage
Note 2: These parameters, although guaranteed, are not 100%
tested in production.
Note 3: Parameter measured at trip point of latch with V
PIN2
= 0.
Note 4: Gain defined as: A
=
V
PIN1
V
PIN3
; 0
≤
V
PIN 3
≤
0.8V.
Note 5: Adjust V
CC
above the start threshold before setting at
15V.
Note 6: Output frequency equals oscillator frequency for the
UC1842A and UC1843A. Output frequency is one half
oscillator frequency for the UC1844A and UC1845A.
Note 7: "Temperature stability, sometimes referred to as average
temperature coefficient, is described by the equation:
0.3
11
34
0.5
17
0.3
11
34
0.5
17
mA
mA
V
V
PIN 2
= V
PIN 3
= 0V
I
CC
= 25mA
30
30
UC1842A/3A/4A/5A
UC2842A/3A/4A/5A
UC3842A/3A/4A/5A
TempStability
=
V
REF
(
max
)
V
REF
(
min
)
T
J
(
max
)
T
J
(
min
)
.
V
REF
(max) and V
REF
(min) are the maximum & mini-
mum reference voltage measured over the appropriate
temperature range. Note that the extremes in voltage
do not necessarily occur at the extremes in tempera-
ture."
Note 8: This parameter is measured with R
T
= 10k
to V
REF
.
This contributes approximately 300
μ
A of current to the
measurement. The total current flowing into the R
T
/C
T
pin will be approximately 300
μ
A higher than the meas-
ured value.
ELECTRICAL CHARACTERISTICS (cont.)
Unless otherwise stated, these specifications apply for -55
°
C
≤
T
A
≤
125
°
C for
the UC184xA; -40
°
C
≤
T
A
≤
85
°
C for the UC284xA; 0
≤
T
A
≤
70
°
C for the UC384xA; V
CC
= 15V (Note 5); R
T
= 10k; C
T
= 3.3nF; T
A
= T
J
;
Pin numbers refer to DIL-8.
3
相關(guān)PDF資料
PDF描述
UC285-x FAST TRANSIENT REPONSE 5-A LOW-DROPOUT REGULATOR
UC281N DOUBLE CHANNEL HIGH SIDE SMART POWER SOLID STATE RELAY
UC282DW DOUBLE CHANNEL HIGH SIDE DRIVER
UC282DWTR DOUBLE CHANNEL HIGH SIDE DRIVER
UC282J Analog IC
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
UC2845AY 制造商:Microsemi Corporation 功能描述:UC2845AY - Bulk
UC2845B 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:HIGH PERFORMANCE CURRENT MODE CONTROLLERS
UC2845BAC 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:HIGH PERFORMANCE CURRENT MODE CONTROLLERS
UC2845BD 功能描述:電流型 PWM 控制器 52kHz 1A Current PWM 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
UC2845BD1 功能描述:電流型 PWM 控制器 0.5mA 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
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

*
*
*