PT6447 Datasheet, PDF (1/9 Pages) Texas Instruments – 6-A 5-V/3.3-V Input Adjustable Integrated Switching Regulator

PT6440 Series
6-A 5-V/3.3-V Input Adjustable
Integrated Switching Regulator
Features
• 6A Output Current
• Input Voltage Range:
3.1 V to 5.5 V
• 90% Efficiency
• Adjustable Output Voltage
• Standby Function
• Short Circuit Protection
• Small Footprint (0.61 in²)
• Solderable Copper Case
• 8.8 10⁶ Hours MTBF
SLTS133B
Revised (1/30/2002)
Description
The PT6440 Excalibur™ power modules
are a series of high performance Integrated
Switching Regulators (ISRs), housed in a
thermally efficient solderable copper case.
These modules operate from input voltages
as low as 3.1V to produce a high-output low-
voltage power source; ideal for powering the
industry’s latest DSP and microprocessors.
The series includes standard output bus
voltages as low as 1.0VDC.
The innovative copper case construction
provides superior thermal performance in a
small footprint. Both through-hole and
surface mount pin configurations are avail-
able. The PT6440 series operating features
include external output voltage adjustment,
an On/Off inhibit, and short-circuit protection.
A 100µF input, and 330µF output capacitor
are required for proper operation.
Ordering Information
PT6441H = 3.3 Volts
† PT6442H = 2.5 Volts
† PT6443H = 2.0 Volts
† PT6444H = 1.8 Volts
† PT6445H = 1.5 Volts
† PT6446H = 1.2 Volts
† PT6447H = 1.0 Volts
† 3.3V Input Bus Capable
PT Series Suffix (PT1234x )
Case/Pin
Configuration
Order
Suffix
Package
Code *
Vertical
Horizontal
SMD
N
(EPH)
A
(EPJ)
C
(EPK)
* Previously known as package styles 1540/50.
(Reference the applicable package code drawing
for the dimensions and PC board layout)
Pin-Out Information
Pin Function
1 Inhibit *
2 Vin
3 Vin
4 Vin
5 GND
6 GND
7 GND
8 GND
9 Vout
10 Vout
11 Vout
12 Vout Adj *
* For further information, see
application notes.
Standard Application
+V_IN
2,3,4
+
C _IN
INH
GND
12
PT6440
9,10,11
V_O(ADJ)
+V_OUT
1
5,6,7,8
+
C _OUT
GND
Cin = Required 100µF electrolytic
Cout = Required 330µF electrolytic
For technical support and more information, see inside back cover or visit www.ti.com