參數(shù)資料
型號(hào)： TPS54900PWG4
廠商： TEXAS INSTRUMENTS INC
元件分類： 模擬信號(hào)調(diào)理
英文描述： SPECIALTY ANALOG CIRCUIT, PDSO16
封裝： GREEN, PLASTIC, TSSOP-16
文件頁數(shù)： 1/17頁
文件大小： 318K
代理商： TPS54900PWG4
TPS54900
SLVS405 OCTOBER 2001
PROGRAMMABLE FOURCHANNEL STEPDOWN
DC/DC CONVERTER
(6,4 mm x 5,0 mm)
1
www.ti.com
FEATURES
D Four Independent 100-mA Channels
Programmable Over 4-Wire Serial Port
D 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
D Internally Compensated PWM Controller and
Integrated PMOS Power Switches
D Global and Per Channel Status Available
Through Serial Port
D External Synchronization of PWM With
System Clock
D Per Channel Current Limit and Global Thermal
Shutdown
D 40°C to 85°C Ambient Temperature Range
APPLICATIONS
D ADSL Central Office Line Drivers
D Software Line Card Provisioning
DESCRIPTION
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
switch with a typical rDS(ON) of 0.8 , which makes it
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.
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.
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
TSSOP (PW) PACKAGE
(TOP VIEW)
60
70
80
90
100
7
9
11
13
15
Driver Supply Voltage V
Efficiency
(%)
0
20
40
60
80
100
Driver
Supply
Current
mA
Driver Current
Efficiency
EFFICIENCY
vs
DRIVER SUPPLY VOLTAGE
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
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.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPS54900PWR 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 Prog 4-Ch Step Dwn DC/DC Converter RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
TPS54900PWRG4 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 Prog 4-Ch Step Dwn DC/DC Converter RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
TPS54910 制造商:TI 制造商全稱:Texas Instruments 功能描述:3-V TO 4-V INPUT, 9-A OUTPUT SYNCHRONOUS BUCK PWM SWITCHER WITH INTEGRATED FETs (SWIFT)
TPS54910EVM-213 功能描述:電源管理IC開發(fā)工具 9-A 3-4 Vin DC/DC Converter RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V
TPS54910PWP 功能描述:直流/直流開關(guān)調(diào)節(jié)器 3.3V Inp 9A Sync Buck Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
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