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參數(shù)資料
| 型號： | PT6948N |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | XPHASE Phase IC with Opti-Phase OVP with overtemp detect. The IR3087 Phase IC combined with an IR XPhase TM Control IC provides a full featured and flexible way to implement power solutions for the latest high performance CPUs and ASICs.; Similar to IR3087M with Lead Free Packaging on Tape and Reel |
| 中文描述： | 開關(guān)電源控制器 |
| 文件頁數(shù)： | 1/9頁 |
| 文件大小： | 190K |
| 代理商： | PT6948N |
For technical support and more information, see inside back cover or visit www.ti.com
Standard Application
Features
High Efficiency Dual Output
(See Ordering Information)
Ideal Power Source for DSPs
5V/3.3V Input
6A Rated (Both Outputs)
Internal Power-up Sequencing
Single On/Off Control
Independent Adjust/Trim
Description
The PT6940 Excalibur power modules
are a series of high-efficiency dual-output
regulators, housed in a solderable space-
saving package. The dual output is ideal
for DSP applications that require a second
voltage source for a processor core.
Both outputs from the PT6940 regulator
modules are rated to deliver a full 6A load
current simultaneously, and are internally
sequenced to comply with the power-up
requirements of popular DSP ICs.
Each output can be independently
adjusted with a single external resistor, and
incorporates an output sense to compensate
for voltage drop between the regulator and
load. A short-circuit load fault at either
output will result in the coordinated
shutdown of both voltages.
Remote Sensing (Vo
1
& Vo
2
)
Soft-Start
Short-Circuit Protection
(coordinated shutdown)
27-pin Space-Saving Package
Solderable Copper Case
C
in
= Req’d 330μF * electrolytic
Co
1
/Co
2
= Req’d 330μF * electrolytic
*300μF for Oscon or low ESR tantalum
(see application notes)
PT6940 Series
6-A Dual Output 5-V/3.3-V Input
Integrated Switching Regulator
SLTS155B
Revised (4/8/2002)
Ordering Information
PT 6941
= +3.3/2.5 Volts
PT 6942
= +3.3/1.8 Volts
PT 6943
= +3.3/1.5 Volts
PT 6944
= +3.3/1.2 Volts
PT 6946
= +2.5/1.8 Volts
PT 6947
= +2.5/1.5 Volts
PT 6948
= +2.5/1.2 Volts
-Denotes models that will also operate off
3.3V input bus.
Pin Function
1
STBY*
2
Vo
1
Adjust
3
Vo
1
Sense
4
Vo
1
5
Vo
1
6
Vo
1
7
GND
8
GND
9
GND
10
GND
11
GND
12
GND
13
V
in
14
V
in
Pin
15
16
17
18
19
20
21
22
23
24
25
26
27
Function
V
in
V
in
GND
GND
GND
GND
GND
GND
Vo
2
Vo
2
Vo
2
Vo
2
Sense
Vo
2
Adjust
STBY* pin:
Open = Outputs enabled
Ground = Outputs disabled
Pin-Out Information
PT Series Suffix
(PT1234
x
)
Case/Pin
Configuration
Vertical
Horizontal
SMD
(Reference the applicable package code drawing
for the dimensions and PC layout)
Order
Suffix
N
A
C
Package
Code
(ENE)
(ENF)
(ENG)
PT6940
Co
1
330μF
+
13–16
4–6
23–25
C
IN
330μF
26
Co
2
330μF
+
3
1
Vo
1
Vo
2
L
O
A
D
L
O
A
D
Vo
2
Sense
Vo
1
Sense
V
IN
STBY*
GND
GND
+
7–12
17–22
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