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參數(shù)資料
| 型號(hào)： | UC495ACJ |
| 元件分類(lèi)： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | Very low drop voltage regulators with inhibit |
| 中文描述： | 電壓模式開(kāi)關(guān)電源控制器 |
| 文件頁(yè)數(shù)： | 2/5頁(yè) |
| 文件大?。?/td> | 473K |
| 代理商： | UC495ACJ |
CONNECTION DIAGRAMS
DIL-18 (TOP VIEW)
J or N Package
DIL-18 (TOP VIEW)
J or N Package
UC494A/AC
UC495A/AC
ABSOLUTE MAXIMUM RATINGS (
Note 1, 2, 3)
Supply Voltage, V
CC
(Note 2). . . . . . . . . . . . . . . . . . . . . . . . 45V
Amplifier Input Voltages . . . . . . . . . . . . . . . . . . . . . . V
CC
+ 0.3V
Collector Output Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . 41V
Collector Output Current. . . . . . . . . . . . . . . . . . . . . . . . . 250mA
Continuous Total Dissipation . . . . . . . . . . . . . . . . . . . . 1000mW
@ (or below) 25
°
C free air temperature range (Note 3)
Storage Temperature Range . . . . . . . . . . . . . . . -65° to +150°C
Lead Temperature 1/16" (1.6mm) from case for 60 seconds,
J Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300°C
Lead Temperature 1/16" (1.6mm) from case for 10 seconds,
N Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C
Note 1: Over operating free air temperature range unless
otherwise noted.
Note 2: All voltage values are with respect to network
ground terminal 3.
Note 3: Consult Packaging Section of Databook regarding
thermal specifications and limitations of packages.
RECOMMENDED OPERATING CONDITIONS
Supply Voltage V
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . 7V to 40V
Error Amplifier Input Voltages . . . . . . . . . . . . . -0.3V to V
CC
-2V
Collector Output Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . 40V
Collector Output Current (each transistor). . . . . . . . . . . 200mA
Current into Feedback Terminal. . . . . . . . . . . . . . . . . . . . 0.3mA
Timing Capacitor, C
T
. . . . . . . . . . . . . . . . . 0.47nF to 10,000nF
Timing Resistor, R
T
. . . . . . . . . . . . . . . . . . . . . 1.8k
to 500k
Oscillator Frequency . . . . . . . . . . . . . . . . . . . . 1kHz to 300kHz
Operating Free Air Temperature
UC494A, UC495A . . . . . . . . . . . . . . . . . . . . -55°C to +125°C
UC494AC, UC495AC. . . . . . . . . . . . . . . . . . . . 0°C to +70°C
ELECTRICAL CHARACTERISTICS:
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
Reference Section
Output Voltage V
REF
Input Regulation
Output Regulation
Output Voltage Over Temperature
Short Circuit Output Current
Oscillator Section
Frequency (Note 2)
Standard Deviation Of Frequency (Note 3)
Frequency Change With Voltage
Frequency Change With Temperature
Deadtime Control Section
(Output Control Connected to V
REF
)
Input Bias Current (Pin 4)
Maximum Duty-Cycle (Each Output)
I
O
= 1mA, T
A
= 25
°
C
V
CC
= 7V to 40V
I
O
= 1mA to 10mA
T
A
= Min. to Max.
V
REF
= 0, T
A
= 25
°
C (Note 1)
4.95
5
2
1
5.05
25
15
5.10
50
V
mV
mV
V
mA
4.90
10
35
C
T
= 0.01
μ
F, R
T
= 12k
All Values of V
CC
, C
T
, R
T
, T
A
Constant
V
CC
= 7V to 40V, T
A
= 25
°
C
C
T
= 0.01
μ
F, R
T
= 12k
,
T
A
= Min. to Max.
10
10
0.1
kHz
%
%
%
2
V
(PIN 4)
= 0V to 5.25V
V
(PIN 4)
= 0V
-2
-10
μ
A
%
45
Unless otherwise stated, over recommended operating free-air temperature range,
V
CC
= 15V, f = 10kHz, T
A
= T
J.
UC494A/AC
UC495A/AC
2
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