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參數資料
| 型號： | TPS54900PWG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 模擬信號調理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PDSO16 |
| 封裝： | GREEN, PLASTIC, TSSOP-16 |
| 文件頁數： | 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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相關代理商/技術參數 |
參數描述 |
|---|---|
| TPS54900PWR | 功能描述:開關變換器、穩壓器與控制器 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 開關頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| TPS54900PWRG4 | 功能描述:開關變換器、穩壓器與控制器 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 開關頻率:1 MHz 工作溫度范圍: 安裝風格: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開發工具 9-A 3-4 Vin DC/DC Converter RoHS:否 制造商:Maxim Integrated 產品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| TPS54910PWP | 功能描述:直流/直流開關調節器 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 輸出端數量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
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