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PT7716 Datasheet

  • PT7716

  • 20-A 1.075V to 1.85V 3.3V-Input Programmable ISR

  • 8頁

  • ETC

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PT7716鈥?.3V
20-A Low-Voltage Programmable
Integrated Switching Regulator
SLTS162B
(Revised 6/27/2002)
Features
鈥?/div>
+3.3V Input Voltage
鈥?/div>
20-A Output Current
鈥?/div>
5-bit Programmable:
1.075V to 1.85V (25mV Steps)
鈥?/div>
VRM 9.0 Compatible
鈥?/div>
High Efficiency (88%)
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Differential Remote Sense
Over-Current Protection
27-Pin Space-Saving Package
Solderable Copper Case
Compatible with PT7744
20A 鈥淐urrent Booster鈥?/div>
Description
The PT7716 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 PT7716 produces a tightly regulated
supply voltage that is programmable over
the range, 1.075V to 1.85V. The output
voltage is selected via a 5-bit code. The
code adjusts the output voltage in steps
of 25mV and is VRM 9.0 compatible.
This regulator is ideally suited for
applications that employ microprocessor
and DSP products that require core supply
voltages as low as 1.075V.
The PT7716 includes a Shutdown
control, Differential Remote Sense, and
Short-Circuit Protection.
Ordering Information
PT7716o
= 1.075 to 1.85Volts
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 *
VID4
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
VID4
V
IN
PROGRAMMING PINS
REMOTE SENSE(+)
6 4 3 2 1
26
20-25
L1
7-11
1碌H
+
PT7716
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
in
= 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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