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参数资料
| 型号： | PT4854A |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源模块 |
| 英文描述： | 3-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| 封装： | SIP-26/25 |
| 文件页数： | 1/15页 |
| 文件大小： | 268K |
| 代理商： | PT4854A |
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
o = +3.3/+2.5/+1.5V
PT4852
o = +3.3/+1.8/+1.5V
PT4853
o = +3.3/+2.5/+1.2V
PT4854
o = +3.3/+1.8/+1.2V
PT4855
o = +3.3/+1.5/+1.2V
PT4856
o = +5.0/+3.3/+1.5V
PT Series Suffix (PT1234 x )
Case/Pin
Order
Package
Configuration
Suffix
Code
Vertical
N
(EKD)
Horizontal
A
(EKA)
SMD
C
(EKC)
(Reference the applicable package code drawing for
the dimensions and PC layout)
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.
Cin =Optional
Co1, Co2, Co3 =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
3Sense
V
2Sense
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
相关PDF资料 |
PDF描述 |
|---|---|
| PT4851C | 3-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| PT4853N | 3-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| PT5021H | 1.5 A SWITCHING REGULATOR, 1200 kHz SWITCHING FREQ-MAX, PSMA3 |
| PT5028H | 1.5 A SWITCHING REGULATOR, 1200 kHz SWITCHING FREQ-MAX, PSMA3 |
| PT5024LT | 1.5 A SWITCHING REGULATOR, 800 kHz SWITCHING FREQ-MAX, PSMA3 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| PT4854C | 功能描述:直流/直流开关转换器 Triple-Output Iso DC-DC Cnvtr RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| PT4854N | 功能描述:DC/DC转换器 Triple-Output Iso DC-DC Cnvtr RoHS:否 制造商:Murata 产品: 输出功率: 输入电压范围:3.6 V to 5.5 V 输入电压（标称）: 输出端数量:1 输出电压（通道 1）:3.3 V 输出电流（通道 1）:600 mA 输出电压（通道 2）: 输出电流（通道 2）: 安装风格:SMD/SMT 封装 / 箱体尺寸: |
| PT4855 | 制造商:TI 制造商全称:Texas Instruments 功能描述:25-A Triple Output Isolated DC/DC Converter For Logic Applications |
| PT4855A | 功能描述:直流/直流开关转换器 Triple-Output Iso DC-DC Cnvtr RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| PT4855C | 功能描述:直流/直流开关转换器 Triple-Output Iso DC-DC Cnvtr RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
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