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參數(shù)資料
| 型號： | 5962-8670406VXA |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, CQCC20 |
| 封裝： | CERAMIC, LCC-20 |
| 文件頁數(shù)： | 9/15頁 |
| 文件大小： | 646K |
| 代理商： | 5962-8670406VXA |
ABSOLUTE MAXIMUM RATINGS
(1) (2)
RECOMMENDED OPERATING CONDITIONS
ELECTRICAL CHARACTERISTICS
www.ti.com........................................................................................................................................................ SLUS872A – JANUARY 2009 – REVISED MAY 2009
over operating free-air temperature range (unless otherwise noted)
VCC
Supply voltage, low-impedance source
30 V
Supply current
Self limiting
IO
Output current
±1 A
Output energy (capacitive load)
5
J
VI
Input voltage (VFB, ISENSE)
–0.3 V to 6.3 V
Error amplifier output sink current
10 mA
PD
Power dissipation (TA = 25°C)
1 W
Tstg
Storage temperature range
–65°C to 150°C
Tlead
Lead temperature (soldering, 10 seconds)
300°C
(1)
Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under recommended operating
conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2)
All voltages are with respect to ground. Currents are positive into, negative out of the specified terminal.
over operating free-air temperature range (TA = TJ = –55°C to 125°C), unless otherwise noted.
MIN
MAX
UNIT
VCC
Supply voltage
12
25
V
Sink/source output current (continuous or time average)
0
200
mA
Reference load current
0
20
mA
VCC = 15 V
(1), R
T = 10 k, CT = 3.3 nF, TA = TJ = –55°C to 125°C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Reference Section
Output voltage
TJ = 25°C, IO = 1 mA
4.95
5
5.06
V
Line regulation
VIN = 12 V to 25 V
6
20
mV
Load regulation
IO = 1 mA to 20 mA
6
25
mV
Temperature stability(2)(3)
0.2
0.4
mV/°C
Total output variation
Over line, load, and temperature
4.9
5.1
V
Output noise voltage
10 Hz
≤ f ≤ 10 kHz, TJ = 25°C
50
V
Long term stability
1000 hours, TA = 125°C
(2)
5
25
mV
Short-circuit output current
–30
–100
–180
mA
Oscillator Section
Initial accuracy
TJ = 25°C
(4)
47
52
57
kHz
Voltage stability
VCC = 12 V to 25 V
0.2
1
%
Temperature stability
TA = MIN to MAX
(2)
5
%
Amplitude peak-to-peak
V pin 4(2)
1.7
V
TJ = 25°C
7.8
8.3
8.8
Discharge current
V pin 4 = 2 V(5)
mA
TJ = Full range
7.5
8.8
(1)
Adjust VCC above the start threshold before setting at 15 V.
(2)
Parameters ensured by design and/or characterization, if not production tested.
(3)
Temperature stability, sometimes referred to as average temperature coefficient, is described by the equation:
Temp Stability = VREF (max) - VREF (min)/TJ (max) - TJ (min). VREF (max) and VREF (min) are the maximum and minimum reference
voltage measured over the appropriate temperature range. Note that the extremes in voltage do not necessarily occur at the extremes in
temperature.
(4)
Output frequency equals ocscillator frequency for the UC1842A and UC1843A. Output frequency is one half oscillator frequency for
UC18444A and UC1845A.
(5)
This parameter is measured with RT = 10 k to VREF. This contributes approximately 300 A of current to the measurement. The total
current flowing into the RT/CT pin will be approximately 300 A higher than the measured value.
Copyright 2009, Texas Instruments Incorporated
3
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