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PT7744 Datasheet

  • PT7744

  • 20 Amp ＇Current Booster＇ for PT7712 ISR

  • 159.58KB

  • 8頁(yè)

  • ETC

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PT7712鈥?.3V
20-A Programmable
Integrated Switching Regulator
SLTS088A
(Revised 6/27/2002)
Features
鈥?/div>
3.3V Input Voltage
鈥?/div>
20-A Output Current
鈥?/div>
4-Bit Programmable Output:
1.3V to 2.05V
鈥?/div>
High Efficiency (87%)
鈥?/div>
Differential Remote Sense
鈥?/div>
Over-Current Protection
鈥?/div>
27-Pin Space-Saving Package
鈥?/div>
Solderable Copper Case
鈥?/div>
Compatible with PT7744
20A 鈥淐urrent Booster鈥?/div>
Description
The PT7712 Excalibur鈩?power module
is a 20-A integrated switching regulator
(ISR) housed a 27-pin space-saving
copper package. Operating from a 3.3V
input bus, the PT7712 produces a tightly
regulated output voltage that is program-
mable over the range, 1.3V to 2.05V.
The output voltage is selected via a
4-bit code, which is compatible with the
VRM specifications defined by Intel廬.
This regulator is most suitable for
microprocessor and DSP applications
requiring core or I/O logic supply voltages
as low as 1.3V.
The PT7712 incorporates output
short-circuit protection, and a differential
remote sense to compensate for voltage
drop between the regulator and load.
Ordering Information
PT7712o
= 1.3 to 2.05 Volts
PT7744o
= 20-A Booster *
* Consult the related application note for
information on current booster operation.
Pin-Out Information
Pin Function
1
2
3
4
5
6
7
8
9
10
11
12
13
14
VID0
VID1
VID2
VID3
STBY *
No Connect
Vin
Vin
Vin
Vin
Vin
Rem Sense Gnd
GND
GND
Pin Function
15
16
17
18
19
20
21
22
23
24
25
26
27
GND
GND
GND
GND
GND
Vout
Vout
Vout
Vout
Vout
Vout
Rem Sense V
out
Sync Out
PT Series Suffix
(PT1234
x
)
Case/Pin
Order
Configuration Suffix
Vertical
Horizontal
SMD
Package
Code 鈥?/div>
(ENE)
(ENF)
(ENG)
N
A
C
鈥?/div>
Previously known as package styles
1420 & 1430
(Reference the applicable package code
drawing for the dimensions and PC
board layout)
For STBY* pin: open =output enabled
ground =output disabled.
Standard Application
VID0
VID1
VID2
VID3
PROGRAMMING PINS
REMOTE SENSE(+)
4 3 2 1
26
20-25
L1
V
IN
7-11
1碌H
+
PT7712
27
5
13-19
12
V
OUT
C
IN
SYNC OUT
GND
STBY*
+
C
OUT
GND
REMOTE SENSE(鈥?
L
O
A
D
C
in
= Required 1500碌F electrolytic
C
out
= Required 330碌F electrolytic
L
1
= Optional 1碌H input choke
For technical support and more information, see inside back cover or visit www.ti.com

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