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PT7713 Datasheet

  • PT7713

  • 20-A 1.8V to 2.55V 3.3V-Input Programmable ISR

  • 8頁(yè)

  • ETC

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PT7713鈥?.3V
20-A Programmable
Integrated Switching Regulator
SLTS149A
(Revised 6/27/2002)
Features
鈥?/div>
3.3V Input Voltage
鈥?/div>
20-A Output Current
鈥?/div>
4-bit Programmable:
1.8V to 2.55V (50mV Steps)
鈥?/div>
High Efficiency (90%)
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 PT7713 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 PT7713 produces a tightly regu-
lated supply voltage that is programmable
over the range, 1.8V to 2.55V. The
output voltage is selected via a unique
4-bit input code that adjusts the output
in steps of 50mV.
This regulator is most suitable for
microprocessor and DSP applications
requiring core or I/O logic supply voltages
as low as 1.8V.
The PT7713 incorporates output short-
circuit protection, and a differential remote
sense to compensate for voltage drop
between the regulator and load.
Ordering Information
PT7713o
= 1.8 to 2.55 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
+
PT7713
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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