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參數(shù)資料
| 型號： | PT4856 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | "5V/3.3V/1.5V |
| 中文描述： | 5V/3.3V/1.5V 輸出 48V 輸入的三路輸出 DC/DC 轉(zhuǎn)換器 |
| 文件頁數(shù)： | 1/13頁 |
| 文件大?。?/td> | 233K |
| 代理商： | PT4856 |
For technical support and more information, see inside back cover or visit www.ti.com
Features
Triple Logic Voltage Outputs
(Independently Regulated !)
Input Voltage Range:
36V to 75V
1500VDC Isolation
Over-Current Protection
Over-Voltage Protection
Over-Temperature Shutdown
Under-Voltage Lockout
Independently Adjustable Outputs
Ordering Information
PT4851
= +3.3/+2.5/+1.5V
PT4852
= +3.3/+1.8/+1.5V
PT4853
= +3.3/+2.5/+1.2V
PT4854
= +3.3/+1.8/+1.2V
PT4855
= +3.3/+1.5/+1.2V
PT4856
= +5.0/+3.3/+1.5V
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
(EKD)
(EKA)
(EKC)
Standard Application
PT4850 Series
Description
The PT4850 Excalibur power
modules are a series of isolated triple-
output DC/DC converters that
operate from a standard (–48V)
central office supply. These modules
are rated for a combined output of
up to 25A, and were designed for
powering mixed logic applications.
The triple-output voltage provides
a compact multiple-output power
supply in a single DC/DC module.
Output voltage options include
a low-voltage output for a DSP or
ASIC core, and two additional supply
voltages for the I/O, and other func-
tions.
The PT4850 series incorporates
many features to simplify system
integration. These include a flexible
On/Off enable control, input under-
voltage lockout and over-temperature
protection. All outputs are current
limited and short-circuit protected,
and are internally sequenced to meet
the power-up and power-down re-
quirements of popular DSP ICs.
The PT4850 series is housed in
a space-saving solderable case. The
module requires no external heat
sink. Both vertical and horizontal
pin configurations are available, in-
cluding surface mount.
C
in
=Optional
Co
1
, Co
2
, Co
3
=Optional. See specifications
EN1 & EN2 operation: See application notes
25-A Triple Output Isolated DC/DC
Converter For Logic Applications
SLTS166C - FEBRUARY 2002 - REVISED MARCH 2003
C
IN
+
Co
3
+
Co
2
+
Co
1
+
DSL, DSP,
or ASIC
Chipset
I/O
Logic
Core
+V
IN
–V
IN
1 =Inhibit
Q1
18,19,20
PT4850
EN 2
EN 1
+Vo
1
+Vo
2
+Vo
3
COM
V
1
Adj
V
2
Adj
V
3
Adj
COM
+V
IN
–V
IN
9,10,11
8
15,16
17
22,23
21
12,13,14
1
4
3
2
V
3
Sense
V
2
Sense
24
25
Dual Logic On/Off Control
Fixed Frequency Operation
Solderable Space Saving Package:
1.97 sq. in. PCB Area (suffix N)
IPC Lead Free 2
Safety Approvals Pending:
UL60950
CSA 22.2 950
VDE EN60950
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| PT491 | Intermediate Acceptance High Sensitivity Phototransistor |
| PT491F | Intermediate Acceptance High Sensitivity Phototransistor |
| PT493 | Intermediate Acceptance High Sensitivity Phototransistor |
| PT493F | Intermediate Acceptance High Sensitivity Phototransistor |
| PT495F | Intermediate Acceptance High Sensitivity Phototransistor |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PT4856A | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 5/3.3/1.5V 48V Inp Trpl-Otpt DC-DC Conv RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
| PT4856C | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 5/3.3/1.5V 48V Inp Trpl-Otpt DC-DC Conv RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
| PT4856N | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 5/3.3/1.5V 48V Inp Trpl-Otpt DC-DC Conv RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
| PT491 | 制造商:SHARP 制造商全稱:Sharp Electrionic Components 功能描述:Intermediate Acceptance High Sensitivity Phototransistor |
| PT491F | 制造商:SHARP 制造商全稱:Sharp Electrionic Components 功能描述:Intermediate Acceptance High Sensitivity Phototransistor |
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