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| 型号： | TPS40005 |
| 厂商： | Texas Instruments, Inc. |
| 英文描述： | "Low Input (2.25V-5.5V) 600 kHz Frequency |
| 中文描述： | 低输入 (2.25V-5.5V) 600kHz 频率的同步降压控制器，具有输出驱动/吸入电流 |
| 文件页数： | 1/20页 |
| 文件大小： | 280K |
| 代理商： | TPS40005 |
TPS40000, TPS40001
TPS40002, TPS40003
TPS40004, TPS40005
SLUS507B JANUARY 2002 REVISED AUGUST 2003
LOW INPUT VOLTAGEMODE
SYNCHRONOUS BUCK CONTROLLER
1
www.ti.com
FEATURES
D Operating Input Voltage 2.25 V to 5.5 V
D Output Voltage as Low as 0.7 V
D 1% Internal 0.7 V Reference
D Predictive Gate Drivet N-Channel MOSFET
Drivers for Higher Efficiency
D Externally Adjustable Soft-Start and
Overcurrent Limit
D Fixed-Frequency, 300-kHz or 600-kHz,
Voltage-Mode Control
D Source-Only Current or Source/Sink Current
D 10-Lead MSOP PowerPadt Package for
Higher Performance
D Versions for Starting Into Pre-Biased Current
D Thermal Shutdown
D Internal Boostrap Diode
SIMPLIFIED APPLICATION DIAGRAM
APPLICATIONS
D Networking Equipment
D Telecom Equipment
D Base Stations
D Servers
D DSP Power
D Power Modules
DESCRIPTION
The
TPS4000x
are
controllers
for
low-voltage,
non-isolated synchronous buck regulators. These
controllers use a topside N-type MOSFET for the
primary buck switch. While a topside N-channel does
require a bootstrap circuit to be fully turned on, the extra
complexity is more than compensated for by the fact
that N-type devices provide lower on-resistance for a
given device size and gate charge. The chip controls the
delays from main switch off to rectifier turn-on and from
rectifier turn-off to main switch turn-on in such a way as
to minimize diode losses (both conduction and
recovery) in the synchronous rectifier with TI’s
proprietary Predictive Gate Drive
t technology. The
reduction in these losses is significant; for a given
converter power level, smaller FETs can be used, or
heat sinking can be reduced or even eliminated.
UDG01141
VIN
VOUT
1
ILIM
10
BOOT
2FB
9
HDRV
3
COMP
8
SW
4
SS/SD
7
VDD
5
GND
6
LDRV
TPS40000
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
2002, Texas Instruments Incorporated
PowerPAD
t and Predictive Gate Drivet are trademarks of Texas Instruments Incorporated.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS40005DGQ | 功能描述:电压模式 PWM 控制器 Lo Input 600kHz Freq Synch Buck Cntrlr RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| TPS40005DGQG4 | 功能描述:电压模式 PWM 控制器 Lo Input 600kHz Freq Synch Buck Cntrlr RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| TPS40005DGQR | 功能描述:电压模式 PWM 控制器 Lo Input 600kHz Freq Synch Buck Cntrlr RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| TPS40005DGQRG4 | 功能描述:电压模式 PWM 控制器 Lo Input 600kHz Freq Synch Buck Cntrlr RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| TPS40007 | 制造商:TI 制造商全称:Texas Instruments 功能描述:LOW INPUT HIGH EFFEICIENCY SYNCHRONOUS BUCK CONTROLLER |
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