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參數(shù)資料
| 型號(hào)： | UC3845-S08-T |
| 廠商： | UNISONIC TECHNOLOGIES CO LTD |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS |
| 中文描述： | 1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | SOP-8 |
| 文件頁(yè)數(shù)： | 4/7頁(yè) |
| 文件大小： | 307K |
| 代理商： | UC3845-S08-T |
UC3844/45
LINEAR INTEGRATED CIRCUIT
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
4 of 7
QW-R103-010,C
ABS OLUT E MAX IMUM RAT INGS
(Ta=25
°
C)
PARAMETER
SYMBOL
(I
CC
+Iz)
I
OUT
W
V
IN
I
SINK
RATINGS
30
1.0
5.0
-0.3 ~ +5.5
10
862
1250
+150
0 ~ 70
-65 ~ +150
UNIT
mA
A
μ
J
V
mA
mW
mW
°
C
°
C
°
C
Total Power Supply and Zener Current
Output Current, Source or Sink (Note 2)
Output Energy (Capacitive Load per cycle)
Current Sense and Voltage feedback Inputs
Error Amp Output Sink Current
SOP-8
DIP-8
Power Dissipation
P
D
Junction Temperature
Operation Temperature Range
Storage Temperature Range
Note:1.Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
2.Maxmum package power dissipation limits must be observed.
T
J
T
OPR
T
STG
T HERMAL DAT A
PARAMETER
SYMBOL
RATINGS
145
100
UNIT
°
C/W
°
C/W
SOP-8
DIP-8
Thermal Resistance(Junction-to-Air)
θ
JA
(Ta=25
°
C, V
CC
=15V, R
T
=10k, C
T
=3.3nF, 0
°
C
≤
T
A
≤
70
°
C, unless otherwise specified)
PARAMETER
SYMBOL
REFERENCE SECTION
Reference Output Voltage
Line Regulation
△
V
OUT
Load Regulation
△
V
OUT
Temperature Stability
Total Output Variation over Line,
Load, Temperature
Output Noise Voltage
Long Term Stability
Output Short Circuit Current
OSCILLATOR SECTION
Oscillator Voltage Swing
Discharge Current
ELECT RICAL CHARACT ERIST ICS
TEST CONDITIONS
MIN
TYP
MAX
UNIT
V
REF
I
OUT
=1.0mA,T
J
=25 C
V
CC
=12V ~ 25V
I
OUT
=1.0mA ~ 20mA
4.9
5.0
2.0
3.0
0.2
5.1
20
25
V
mV
mV
mV/
°
C
t
S
V
REF
4.82
5.18
V
eN
S
I
SC
f=10Hz ~ kHz, T
J
=25
°
C
T
A
=125
°
C for 1000 Hours
50
5
-85
μ
V
mV
mA
-30
-180
V
OSC
I
DSG
V
OSC
=2.0V, T
J
=25
°
C
T
J
=25
°
C,
0
°
C
≤
T
A
≤
70
°
C
V
CC
=12V ~ 25V
0
°
C
≤
T
A
≤
70
°
C
1.6
10.8
52
0.2
5.0
V
mA
47
46
57
60
1.0
Frequency
f
OSC
kHz
Frequency Change with Voltage
Frequency Change with Temperature
ERROR AMPLIFIER SECTION
Voltage Feedback Input
Δ
f
OSC
/
Δ
V
Δ
f
OSC
/
Δ
T
%
%
V
FB
V
OH
V
OL
I
SINK
I
SOURCE
I
I(BIAS)
G
VO
PSRR
GB
W
V
OUT
=2.5V
R
L
=15k to ground, V
FB
=2.3V
R
L
=15k to V
REF
, V
FB
=2.7V
V
OUT
=1.1V, V
FB
=2.7V
V
OUT
=5.0V, V
FB
=2.3V
V
FB
=2.7V
V
OUT
=2.0V ~ 4.0V
V
CC
=12V ~ 25V
T
J
=25
°
C
2.42
5.0
2.0
-0.5
65
60
0.7
2.50
6.2
0.8
12
-1.0
-0.1
90
70
1.0
2.58
1.1
-2.0
V
High
Low
Sink
Source
Output Voltage Swing
V
Output Current
mA
Input Bias Current
Open Loop Voltage Gain
Power Supply Rejection Ratio
Unity Gain Bandwidth
μ
A
dB
dB
MHz
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| UC3844L-D08-T | HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS |
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