PT6980 Datasheet, PDF (1/12 Pages) Texas Instruments – 10-A 12V-Input Dual Output Integrated Switching Regulator

PT6980 Series
10-A 12V-Input Dual Output
Integrated Switching Regulator
SLTS154
Revised (10/2/2001)
Features
• Dual Outputs
(See Ordering Information)
• Ideal Power Source for DSPs
• 12V Input
• Outputs Adjustable
• Remote Sensing (Vo₁ & Vo₂)
• Standby Function
• Soft-Start
• Internal Sequencing
• Short Circuit Protection
• 23-pin Space-Saving Package
• Solderable Copper Case
Description
The PT6980 Excalibur™ series of
power modules are dual output integrated
switching regulators (ISRs) specifically
designed to power mixed signal ICs.
Operating from a 12-V input bus, the dual
output provides power for both the digital
I/O logic and a DSP core from a single
module. Both output voltages are internally
sequenced during power-up and power-
down to comply with the requirements of
the latest DSP chips. Each output is inde-
pendently adjustable or can be set to at
least one alternative bus voltage with a
simple pin-strap. The modules are made
available in a space-saving solderable case.
The features include output current limit
and short-circuit protection.
Ordering Information
PT6981o = +2.5/1.8 Volts
PT6982o = +3.3/2.5 Volts
PT6983o = +3.3/1.8 Volts
PT6984o = +3.3/1.2 Volts
PT6985o = +2.5/1.2 Volts
PT Series Suffix (PT1234x)
Case/Pin
Configuration
Order Package
Suffix
Code
Vertical
Horizontal
SMD
N
(ELF)
A
(ELG)
C
(ELH)
(Reference the applicable package code drawing
for the dimensions and PC layout)
Pin-Out Information
Pin Function
1 Vo1 Sense
2 No Connect
3 STBY
4 Vin
5 Vin
6 Vin
7 GND
8 GND
9 GND
10 GND
11 GND
12 Vo1
Pin Function
13 Vo1
14 Vo1
15 Vo1
16 Vo₁ Adjust *
17 No Connect
18 Vo2
19 Vo2
20 Vo2
21 Vo2
22 Vo₂ Sense
23 Vo2 Adjust *
* Vo1 and Vo2 can be pin-strapped to another voltage.
See application note on output voltage adjustment.
Standard Application
STBY
V _IN
4,5,6
C₁
GND
Vo₂ Sense
3
22
1
Vo₁ Sense
18-21
Vo₂
PT6980
12-15
Vo₁
+
7-11 16
23
+
C₃
C₂
GND
C1 = Req’d 560µF electrolytic
C2 = Req’d 330µF electrolytic
C3 = Optional 100µF electrolytic
For technical support and more information, see inside back cover or visit www.ti.com