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參數(shù)資料
| 型號(hào)： | PT8105A |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | FILTER CABLE/CLAMP 35 OHM 7MM |
| 中文描述： | 40 -阿3.3/5-V輸入可編程集成開(kāi)關(guān)穩(wěn)壓器 |
| 文件頁(yè)數(shù)： | 6/14頁(yè) |
| 文件大?。?/td> | 231K |
| 代理商： | PT8105A |
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For technical support and more information, see inside back cover or visit www.ti.com
6
PT8100 Series
40-A 3.3/5-V Input Programmable
Integrated Switching Regulator
PT8104 Specifications
(Unless otherwise stated T
a
=25°C, C
1
=1,500μF, C
2
=660μF, V
in
=5V, V
o
=1.8V, & I
o
=40A )
PT8104, V
in
=5V
Typ
—
—
—
±1
±10
1.5
±0.5
Characteristics
Output Current
Symbols
I
o
Conditions
25°C, natural convection
60°C with 200LFM airflow
Over I
o
Range
Over V
o
range
Over V
in
range
Over I
o
range
–40°C
≤
T
a
≤
85°C
Includes set-point, line, load,
–40°C
≤
T
a
≤
85°C, pin 31 to GND
I
o
=15A
Min
0.1
(1)
0.1
(1)
4.5
—
—
—
—
Max
38
40
5.5
±2
—
—
—
Units
A
Input Voltage Range
Set-Point Voltage Tolerance
Line Regulation
Load Regulation (Droop)
Temperature Variation
Total Output Voltage Variation
V
in
V
o
tol
Reg
line
Reg
load
Reg
temp
V
o
tot
V
%V
mV
mV/A
%V
o
—
—
75
(2)
mV
Efficiency
η
V
o
=
1.8V
V
o
=
1.5V
V
o
=
1.2V
—
—
—
—
—
—
—
—
—
—
300
90
88
87
85
82
80
25
50
50
58
350
—
—
—
—
—
—
—
—
—
—
400
%
I
o
=40A
V
o
=
1.8V
V
o
=
1.5V
%
V
o
=
1.2V
V
o
Ripple (pk-pk)
Transient Response (V
o
=1.2V)
V
r
t
tr
V
tr
I
o
sc
o
20MHz bandwidth
1A/μs load step, 50% to 100% Iomax
V
o
over/undershoot
mV
μSec
mV
A
kHz
Short Circuit Threshold
Switching Frequency
Standby Control (pin 6)
Input High Voltage
Input Low Voltage
Input Low Current
Standby Input Current
External Output Capacitance
External Input Capacitance
Operating Temperature Range
Storage Temperature
Mechanical Shock
Over load range
V
IH
V
IL
I
IL
I
in
standby
C
2
C
1
T
a
T
s
Referenced to GND (pins 17–22)
—
–0.2
—
—
660
1,500
–40
–40
—
—
0.5
35
—
—
—
—
Open
(3)
0.8
—
—
15,000
—
+85
(5)
+125
V
Pin 6 to GND
Pin 6 to GND
See PT8104 application schematic
See PT8104 application schematic
Over V
in
Range
—
Per Mil-STD-883D, Method 2002.3
1 msec, Half Sine, mounted to a fixture
Mil-STD-883D, Method 2007.2
20-2000 Hz, soldered in PCB
Vertical/Horizontal
Materials meet UL 94V-0
mA
mA
μF
μF
°C
°C
(6)
(4)
—
—
—
—
500
20
(7)
20
(7)
55
—
—
G’s
Mechanical Vibration
Vertical
Horizontal
G’s
Weight
Flammability
—
—
—
grams
Notes:
(1) ISR-will operate down to no load with reduced specifications.
(2) Total output voltage variation includes load regulation droop, which is required for compliance with specification VRM 8.4-5
(3) The Standby input (pin 6) has an internal pull-up. If it is left open-circuit the module will operate when input power is applied. A low-leakage
MOSFET is recommended to control this input. The open-circuit voltage is nominally 5V. See application notes for interface considerations.
(4) For operation below 0°C, C
must have stable characteristics. Use either low ESR tantalum or Oscon capacitors.
(5) See safe Operating Area curves or consult factory for the appropriate derating.
(6) The PT8100 regulators require a minimum of 660μF, low ESR ouput capacitance (1,200μF for standard aluminum electrolytic) for proper operation.
(7) The case pins on the through-hole package types (suffixes N & A) must be soldered. For more information see the applicable package outline drawing.
Input Filter:
The filter components L
1
and C
are optional for most applications. The inductor must be rated to handle the projected input current. A rating of 20ADC is
recommended. The input capacitance, C
must be rated for a minimum of 1Arms of ripple current. For transient or dynamic load applications, additional capacitance
may be required. For more information refer to the application note on capacitor recommendations for this product.
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