鈥?/div>
Output Remote Sense
Short-Circuit Protection
Thermal Shutdown
Standby On/Off Control
Space-Saving Package
Solderable Copper Case
Description
The PT8100 Excalibur鈩?power
modules are a family of high-output,
high-efficiency, fully integrated
switching regulators (ISRs), housed
in a solderable 31-pin space-saving
copper package. Modules are avail-
able for operation from either a 3.3V
or 5V nominal input bus voltage.
Each provides up to 40A of output
current at output voltages as low
as 0.8V. The output voltage is pro-
grammable via a 5-bit input code.
The PT8100 series incorporates
a state-of-the-art, 2-phase, multiple
power path topology. This extends
the output current range while pro-
viding superior transient response
and input current ripple performance.
The modules are designed for high-
end computing and signal processing
applications, both of which demand
high output currents at low supply
voltages.
The modules have a number of
standard features to facilitate system
integration. These include short-
circuit protection, thermal shutdown,
standby (On/Off) control, and an
output remote sense to compensate
for voltage drop between the regu-
lator and the load. In addition, the
voltage programming codes are
compatible with Intel鈥檚廬 VRM
specifications.
Ordering Information
Part No.
Output Voltage
Progam Range
Input
Bus
PT8101H
PT8102H
PT8103H
PT8104H
PT8105H
=1.300 to
=1.075 to
=1.075 to
=1.050 to
=0.800 to
2.70V
1.85V
1.85V
1.825V
1.575V
5V
5V
3.3V
5V
3.3V
PT Series Suffix
(PT1234
x
)
Case/Pin
Configuration
Vertical
Horizontal
SMD
Order
Suffix
Package
Code
(EKH)
(EKF)
(EKG)
N
A
C
(Reference the applicable package code drawing for
the dimensions and PC board layout)
Standard Application
(See p.3 for PT8104 application schematic)
PROGRAMMING PINS
VID0
VID1
VID2
VID3
VID4
VID
Common
L
1
12鈥?6
11
5
4
3
2
1
31
REMOTE SENSE
V
IN
C
3
100碌F
Optional
+
PT8100 Series
(Except PT8104)
6
17鈥?2
23鈥?0
V
OUT
L
O
A
D
1碌H
C
1
1,500碌F
Required
+
C
2
660碌F
Required
+
GND
GND
STBY*
C
1
C
2
= Required 1500碌F electrolytic input capacitor
= Required 660碌F low ESR OS-Con廬, or
1,200碌F aluminum electrolytic
L
in
/C
3
= Optional input filter components. 1碌H input
choke and 100碌F electroytic capacitor.
For technical support and more information, see inside back cover or visit www.ti.com/powertrends
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