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參數(shù)資料
| 型號： | PT5816N |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 20-A 3.3-V Input Adjustable Integrated Switching Regulator |
| 中文描述： | 20 - 3.3 - V輸入可調(diào)集成開關(guān)穩(wěn)壓器 |
| 文件頁數(shù)： | 3/11頁 |
| 文件大?。?/td> | 202K |
| 代理商： | PT5816N |
For technical support and more information, see inside back cover or visit www.ti.com
Note A:
Characteristic data has been developed from actual products tested at 25 °C. This data is considered typical data for the ISR.
Note B:
SOA curves represent operating conditions at which internal components are at or below manufacturer’s maximum rated operating temperatures.
Efficiency vs Output Current
Power Dissipation vs Output Current
Performance Data; V
in
=3.3 V
(See Note A)
Output Ripple vs Output Current
PT5810 Series
20-A 3.3-V Input Adjustable
Integrated Switching Regulator
Pin Descriptions
Vin:
The positive supply voltage input for the module
with respect to the common ground
(GND)
.
Vout:
This is the regulated output voltage from the mod-
ule with respect to the common ground (
GND
).
GND:
The common node to which the input, output, and
external control signals are referenced.
Sense(–):
Provides the regulator with the ability to sense
the set-point voltage directly across the load. For optimum
output voltage accuracy this pin should always be con-
nected to
GND
, even for applications that demand a
relatively light load.
Sense(+):
When used with
Sense(–)
, the regulation circuitry
will compensate for voltage drop between the converter
and the load. The pin may be left open circuit, but con-
necting it to V
out
will optimize load regulation.
Inhibit*:
This is an open-collector (open-drain) negative
logic input that is referenced to
GND
. Pulling this pin to
GND
disables the module’s output voltage. If
Inhibit*
is
left open-circuit, the output will be active whenever a
valid input source is applied.
V
o
Adjust:
This pin is used to trim the output voltage to a
value within the range of ±10 % of nominal. The adjust-
ment method uses an external resistor. The resistor is
connected from
V
o
Adjust
to either the
(-)Sense
or
(+)Sense
,
in order to adjust the output up or down, respectively.
Margin Dn*:
When this open-collector (open-drain) input
is asserted to
GND
, the output voltage is automatically
decreased by 5 % from the nominal. This feature is used
in applications where the load circuit must be tested for
operation at the extreme values of its supply voltage
tolerance.
Margin Up*:
This is an open-collector (open-drain) input.
When this is asserted to
GND
, the output voltage is
automatically increased by 5 % from the nominal.
Typical Characteristics
Safe Operating Curves; V
in
=3.3 V
(See Note B)
SLTS174 - JANUARY 2003 - REVISED APRIL 2003
50
60
70
80
90
100
0
4
8
Iout - Amps
12
16
20
E
PT5812
PT5813
PT5814
PT5815
PT5816
0
1
2
3
4
5
6
0
4
8
12
16
20
Iout - Amps
P
20
30
40
50
60
70
80
90
0
4
8
12
16
20
Iout (A)
A
200LFM
120LFM
60LFM
Nat Conv
Airflow
0
10
20
30
40
50
60
0
5
10
15
20
Iout - Amps
R
PT5814
PT5812
PT5813
PT5816
PT5815
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