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參數(shù)資料
| 型號(hào)： | TPS54900PWR |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | PROGRAMMABLE FOUR-CHANNEL STEP-DOWN DC/DC CONVERTER |
| 中文描述： | 可編程四通道降壓DC / DC變換器 |
| 文件頁(yè)數(shù)： | 1/16頁(yè) |
| 文件大小： | 251K |
| 代理商： | TPS54900PWR |
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TPS54900
SLVS405 – OCTOBER 2001
PROGRAMMABLE FOUR-CHANNEL STEP-DOWN
DC/DC CONVERTER
(6,4 mm x 5,0 mm)
1
www.ti.com
FEATURES
Four Independent 100-mA Channels
Programmable Over 4-Wire Serial Port
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
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
–40
°
C to 85
°
C Ambient Temperature Range
APPLICATIONS
ADSL Central Office Line Drivers
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 r
DS(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
E
0
20
40
60
80
100
D
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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| TPS54900PWRG4 | 功能描述:開(kāi)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(kāi)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(kāi)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 |
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| TPS54910PWP | 制造商:Texas Instruments 功能描述:IC's |
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