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TPS54900PWR PDF预览

TPS54900PWR

更新时间: 2024-11-17 22:49:39
品牌 Logo 应用领域
德州仪器 - TI 转换器模拟IC信号电路光电二极管
页数 文件大小 规格书
16页 250K
描述
PROGRAMMABLE FOUR-CHANNEL STEP-DOWN DC/DC CONVERTER

TPS54900PWR 技术参数

是否Rohs认证:符合生命周期:Obsolete
零件包装代码:TSSOP包装说明:GREEN, PLASTIC, TSSOP-16
针数:16Reach Compliance Code:unknown
HTS代码:8542.39.00.01风险等级:5.82
Is Samacsys:N模拟集成电路 - 其他类型:ANALOG CIRCUIT
控制模式:VOLTAGE-MODEJESD-30 代码:R-PDSO-G16
长度:5 mm功能数量:1
端子数量:16最高工作温度:85 °C
最低工作温度:-40 °C最大输出电流:0.1 A
封装主体材料:PLASTIC/EPOXY封装代码:TSSOP
封装等效代码:TSSOP16,.25封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, THIN PROFILE, SHRINK PITCH峰值回流温度(摄氏度):NOT SPECIFIED
认证状态:Not Qualified座面最大高度:1.2 mm
子类别:Switching Regulator or Controllers最大供电电压 (Vsup):16 V
最小供电电压 (Vsup):14.25 V标称供电电压 (Vsup):15 V
表面贴装:YES温度等级:INDUSTRIAL
端子形式:GULL WING端子节距:0.65 mm
端子位置:DUAL处于峰值回流温度下的最长时间:NOT SPECIFIED
宽度:4.4 mmBase Number Matches:1

TPS54900PWR 数据手册

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TPS54900  
(6,4 mm x 5,0 mm)  
SLVS405 – OCTOBER 2001  
PROGRAMMABLE FOUR-CHANNEL STEP-DOWN  
DC/DC CONVERTER  
FEATURES  
DESCRIPTION  
D
D
Four Independent 100-mA Channels  
Programmable Over 4-Wire Serial Port  
The TPS54900 four-channel step-down converter uses  
voltage mode PWM control to provide four  
independently programmable output voltages. Each  
regulated channel includes a high-side PMOSFET  
Converter Regulation Range:  
7.5 V to 13.1 V in 400-mV Steps, Plus  
Unregulated Pass-Through Mode to Shunt VIN  
to any Output  
switch with a typical r  
of 0.8 , which makes it  
DS(ON)  
suitable for high efficiency, low current applications.  
Commands sent to the TPS54900 over the four-wire  
serial port programs the outputs independently or  
globally to supply voltages from 7.5 V to 13.1 V in 0.4-V  
increments. When the input voltage is desired at an  
output, a bypass mode can be activated which fully  
enhances the PMOSFET switch and disables the  
switching circuitry of the selected channel.  
D
D
D
D
D
Internally Compensated PWM Controller and  
Integrated PMOS Power Switches  
Global and Per Channel Status Available  
Through Serial Port  
External Synchronization of PWM With  
System Clock  
Per Channel Current Limit and Global Thermal  
Shutdown  
The TPS54900 is an ideal companion device to power  
THS7102 ADSL line drivers as a part of the AC5 central  
office ADSL chipset. With the AC5 chipset controlling  
the TPS54900 output voltages, significant power  
savings are realized by reducing the excess supply  
headroom on a per line basis.  
–40°C to 85°C Ambient Temperature Range  
APPLICATIONS  
D
ADSL Central Office Line Drivers  
Software Line Card Provisioning  
D
EFFICIENCY  
vs  
DRIVER SUPPLY VOLTAGE  
TSSOP (PW) PACKAGE  
(TOP VIEW)  
100  
100  
1
2
3
4
5
6
7
8
16  
15  
14  
13  
12  
11  
10  
9
LX0  
LX1  
GND  
SFS  
SDI  
EN  
FB0  
FB1  
LX3  
LX2  
VIN  
SDO  
SCLK  
CBS  
FB3  
FB2  
Efficiency  
80  
60  
40  
90  
80  
Driver Current  
70  
60  
20  
0
7
9
11  
13  
15  
Driver Supply Voltage – V  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of Texas Instruments  
standard warranty. Production processing does not necessarily include  
testing of all parameters.  
Copyright 2001, Texas Instruments Incorporated  
1
www.ti.com  

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