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參數(shù)資料
| 型號： | 3842B |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | HIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLERS |
| 中文描述： | 高性能的電流模式PWM控制器 |
| 文件頁數(shù)： | 5/21頁 |
| 文件大?。?/td> | 336K |
| 代理商： | 3842B |
www.ti.com
Reference Section Electrical Characteristics
V
CC
= 15 V
(1)
, R
T
= 10 k
, C
T
= 3.3 nF, over recommended operating free-air temperature range (unless otherwise specified)
Oscillator Section
(1)
Electrical Characteristics
V
CC
= 15 V
(2)
, R
T
= 10 k
, C
T
= 3.3 nF, over recommended operating free-air temperature range (unless otherwise specified)
TL284xB, TL384xB
HIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLERS
SLVS610A–AUGUST 2006–REVISED SEPTEMBER 2006
TL284xB
TYP
(2)
TL384xB
TYP
(2)
PARAMETER
TEST CONDITIONS
UNIT
MIN
4.95
MAX
5.05
20
25
MIN
4.9
MAX
5.1
20
25
Output voltage
Line regulation
Load regulation
Average temperature
coefficient of output voltage
Output voltage, worst-case
variation
Output noise voltage
Output-voltage long-term drift After 1000 h at T
J
= 25
°
C
Short-circuit output current
I
O
= 1 mA, T
J
= 25
°
C
V
CC
= 12 V to 25 V
I
O
= 1 mA to 20 mA
5
6
6
5
6
6
V
mV
mV
0.2
0.4
0.2
0.4
mV/
°
C
V
CC
= 12 V to 25 V,
I
O
= 1 mA to 20 mA
f = 10 Hz to 10 kHz, T
J
= 25
°
C
4.9
5.1
4.82
5.18
V
50
50
μ
V
mV
mA
5
25
5
25
–30
–100
–180
–30
–100
–180
(1)
(2)
Adjust V
above the start threshold before setting it to 15 V.
All typical values are at T
J
= 25
°
C.
TL284xB
TYP
(3)
TL384xB
TYP
(3)
PARAMETER
TEST CONDITIONS
UNIT
MIN
MAX
MIN
MAX
T
J
= 25
°
C, R
= 62 k
,
C
= 1 nF, Min = 225 kHz,
Max = 275 kHz
T
J
= Full range
V
CC
= 12 V to 25 V
49
52
55
49
52
55
Initial accuracy
kHz
48
56
48
56
Voltage stability
Temperature stability
Amplitude
0.2
1
0.2
1
%
%
V
5
5
Peak to peak
T
J
= 25
°
C, R
T
/C
T
= 2 V
R
T
/C
T
= 2 V
1.7
8.3
1.7
8.3
7.8
7.5
8.8
8.8
7.8
7.6
8.8
8.8
Discharge current
mA
(1)
Output frequency equals oscillator frequency for the TL3842B and TL3843B. Output frequency is one-half the oscillator frequency for the
TL3844B and TL3845B.
Adjust V
above the start threshold before setting it to 15 V.
All typical values are at T
J
= 25
°
C.
(2)
(3)
5
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