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參數(shù)資料
| 型號： | PT6948N |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 6 A SWITCHING REGULATOR, 400 kHz SWITCHING FREQ-MAX, SMA27 |
| 封裝： | SIP-27 |
| 文件頁數(shù)： | 1/11頁 |
| 文件大?。?/td> | 216K |
| 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 (Vo1 & Vo2)
Soft-Start
Short-Circuit Protection
(coordinated shutdown)
27-pin Space-Saving Package
Solderable Copper Case
Cin = Req’d 330F * electrolytic
Co1/Co2 = Req’d 330F * electrolytic
*300F 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
PT6941
o = +3.3/2.5 Volts
PT6942
o = +3.3/1.8 Volts
PT6943
o = +3.3/1.5 Volts
PT6944
o = +3.3/1.2 Volts
PT6946
o = +2.5/1.8 Volts
PT6947
o = +2.5/1.5 Volts
PT6948
o = +2.5/1.2 Volts
-Denotes models that will also operate off
3.3V input bus.
Pin Function
1
STBY*
2Vo1 Adjust
3Vo1 Sense
4Vo1
5Vo1
6Vo1
7GND
8GND
9GND
10
GND
11
GND
12
GND
13
Vin
14
Vin
Pin
Function
15
Vin
16
Vin
17
GND
18
GND
19
GND
20
GND
21
GND
22
GND
23
Vo2
24
Vo2
25
Vo2
26
Vo2 Sense
27
Vo2 Adjust
STBY* pin:
Open = Outputs enabled
Ground = Outputs disabled
Pin-Out Information
PT Series Suffix (PT1234x)
Case/Pin
Order
Package
Configuration
Suffix
Code
Vertical
N
(ENE)
Horizontal
A
(ENF)
SMD
C
(ENG)
(Reference the applicable package code drawing
for the dimensions and PC layout)
PT6940
Co
1
330F
+
13–16
4–6
23–25
C
IN
330F
26
Co
2
330F
+
3
1
Vo
1
Vo
2
L
O
A
D
L
O
A
D
Vo
2 Sense
Vo
1 Sense
V
IN
STBY*
GND
+
7–12
17–22
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