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参数资料
| 型号： | PT7673N |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 30 A SWITCHING REGULATOR, 350 kHz SWITCHING FREQ-MAX, MSMA27 |
| 封装： | SIP-27 |
| 文件页数： | 2/9页 |
| 文件大小： | 182K |
| 代理商： | PT7673N |
For technical support and more information, see inside back cover or visit www.ti.com
Logic 0 = Pin 12 potential; Sense(– )
Logic 1 = Open circuit (no pull-up resistors)
VID4 must not be changed while the unit is operating.
* For STBY pin:
open =output enabled
ground =output disabled.
Pin-Out Information
Pin Function
1VID0
2VID1
3VID2
4VID3
5
STBY *
6VID4
7Vin
8Vin
9Vin
10
Vin
11
Vin
12
Sense(–)
13
GND
14
GND
Pin Function
15
GND
16
GND
17
GND
18
GND
19
GND
20
Vout
21
Vout
22
Vout
23
Vout
24
Vout
25
Vout
26
Sense(+)
27
Do not connect
PT7673—5 V
30-A 5-Bit Programmable
Integrated Switching Regulator
Pin Descriptions
Vin:
The positive input voltage power node to the mod-
ule, which is referenced to common GND.
GND:
This is the common ground connection for the
‘Vin’ and ‘Vout’ power connections. It is also the 0 VDC
reference for the ‘STBY’ control input.
STBY*:
The STBY pin is an open-collector/drain negative
logic input that is referenced to GND. Applying a low-
level ground signal to this input disables the module’s
output and places the regulator in “standby” mode. When
in standby, the input current drawn by the regulator is
significantly reduced. If the STBY input is left open-
circuit, the module will produce an output whenever a
valid input source is applied.
VID0–VID4:
Selects the set-point output voltage of the
regulator according to the applicable program code (See
programming information). Each input, VID0 through
VID4, must be either connected to ‘Sense(–)’ or left open
circuit.
Vout:
The regulated positive power output with respect
to the GND node. The set point voltage at this node is
defined by the status of the pins VID0 through VID4.
Sense(+):
Provides the regulator with the capability to
regulate the set-point voltage at the load. When used
with ‘Sense(–)’, the regulation circuitry will compensate
for voltage drop between the converter and the load.
This pin may be left open circuit, but connecting it to
‘Vout’ will improve load regulation.
Sense(–):
This is the logic ‘0’ reference for the inputs
VID0 through VID4. It also provides the regulator with a
differential remote sense capability when used with the
‘Sense(+)’ input. For optimum output voltage accuracy
this pin should always be connected to GND.
Programming Information
VID4=1
VID4=0
VID3 VID2 VID1 VID0
Vout
1111
0.800 V
1.200 V
1110
0.825 V
1.225 V
1101
0.850 V
1.250 V
1100
0.875 V
1.275 V
1011
0.900 V
1.300 V
1010
0.925 V
1.325 V
1001
0.950 V
1.350 V
1000
0.975 V
1.375 V
0111
1.000 V
1.400 V
0110
1.025 V
1.425 V
0101
1.050 V
1.450 V
0100
1.075 V
1.475 V
0011
1.100 V
1.500 V
0010
1.125 V
1.525 V
0001
1.150 V
1.550 V
0000
1.175 V
1.575 V
SLTS184A - JANUARY 2003 - REVISED JUNE 2003
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