參數資料
型號： UC2842ADR2
英文描述： Current-Mode SMPS Controller
中文描述： 電流模式開關電源控制器
文件頁數： 3/8頁
文件大?。?/td> 576K
代理商： UC2842ADR2
3
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
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)
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:
Note 3:
Note 4:
These parameters, although guaranteed, are not 100% tested in production.
Parameter measured at trip point of latch with V
PIN 2
= 0.
Gain defined as
A
VPIN
3
Adjust V
CC
above the start threshold before setting at 15V
Output frequency equals oscillator frequency for the UC1842 and UC1843.
Output frequency is one half oscillator frequency for the UC1844 and UC1845.
Temperature stability, sometimes referred to as average temperature coefficient, is described by the equation:
TempStability
TJ max
TJ 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.
VPIN
VPIN
V
=
≤
≤
1
0
3
08
.
,
Note 5:
Note 6:
Note 7:
V
max
(
VREF min
REF
=
)
(
)
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相關代理商/技術參數
參數描述
UC2842ADR2G 功能描述:電流型 PWM 控制器 52kHz 1A Current PWM w/96% Duty Cycle Max RoHS:否 制造商:Texas Instruments 開關頻率: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 輸出端數量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14
UC2842ADT 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Current-Mode SMPS Controller
UC2842ADTR 功能描述:電流型 PWM 控制器 Current-Mode PWM Controller RoHS:否 制造商:Texas Instruments 開關頻率: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 輸出端數量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14
UC2842ADTRG4 功能描述:電流型 PWM 控制器 Current-Mode PWM Controller RoHS:否 制造商:Texas Instruments 開關頻率: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 輸出端數量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14
UC2842ADW 功能描述:電流型 PWM 控制器 Current-Mode PWM Controller RoHS:否 制造商:Texas Instruments 開關頻率: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 輸出端數量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14
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