PT8139—12V
30-A Programmable Integrated
Switching Regulator
SLTS156
(3/8/2002)
Features
• Single Device: 30ADC
• +12-V Input
• Short-Circuit Protection
• Thermal Shutdown
• Standby On/Off Control
• Space-Saving Package
• Solderable Copper Case
• Programmable Output Voltage:
1.7V to 4.0V via 5-Bit Code
• Multiphase Topology
• High Efficiency: 92% @3.3V
• Output Remote Sense
Description
Ordering Information
The PT8139 output voltage is
programmable over the voltage
range, 1.7V to 4.0V, via a 5-bit input
code. This makes the PT8139 an
ideal power source for many highly
integrated digital systems that de-
mand a high power supply current
at low voltages.
The PT8139 features include
short-circuit protection, thermal
shutdown, a Standby (On/Off)
control, and a remote sense to com-
pensate for voltage drop between
the regulator and the load.
The PT8139 Excalibur™ module
is a high performance integrated
switching regulator (ISR), housed in
a solderable, 31-pin space-saving
copper package. Operating from an
input voltage of +12V, the module
provides up to 30A of power over a
range of low-output voltages.
The PT8139 incorporates a state-
of-the-art 2-phase multiple power
path. This topology extends the
output current range while improving
both the transient response and input
current ripple.
PT 8139o = 1.7 to 4.0 Volts
PT Series Suffix
(PT1234x)
Case/Pin
Configuration
O rder
Suffix
Package
Code
Vertical
Horizontal
SMD
N
A
C
(EKH)
(EKF)
(EKG)
(Reference the applicable package code drawing for
the dimensions and PC board layout)
Standard Application
PROGRAMMING PINS
VID0
VID1
VID2
VID3
VID4
REMOTE SENSE
VID
Common
11
5
4
3
2
1
31
Lin
VOUT
12–16
+
23–30
PT8139
VIN
1µH
L
+
O
A
D
6
17–22
CIN
COUT
GND
GND
STBY*
Cin = Required 1500µF electrolytic
Cout = Required 660µF low ESR OS-Con®, or
1,200µF aluminum electrolytic
Lin = Optional 1µH input choke
For technical support and more information, see inside back cover or visit www.ti.com