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参数资料
| 型号： | TPS40304ADRCR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING CONTROLLER, PQCC10 |
| 封装： | 3 X 3 MM, GREEN, PLASTIC, SON-10 |
| 文件页数： | 5/20页 |
| 文件大小： | 508K |
| 代理商： | TPS40304ADRCR |
www.ti.com
SLUSA30 – FEBRUARY 2010
Power Good
The TPS40304A provides an indication that output is good for the converter. This is an open drain signal and
pulls low when any condition exists that would indicate that the output of the supply might be out of regulation.
These conditions include the following:
VFB is more than ±12.5% from nominal
Soft-start is active
A short circuit condition has been detected
NOTE
When there is no power to the device, PGOOD is not able to pull close to GND if an
auxiliary supply is used for the power good indication. In this case, a built in resistor
connected from drain to gate on the PGOOD pull down device makes the PGOOD pin
look approximately like a diode to GND.
Thermal Shutdown
If the junction temperature of the device reaches the thermal shutdown limit of 145°C, the PWM and the oscillator
are turned off and HDRV and LDRV are driven low. When the junction cools to the required level (125°C typical),
the PWM initiates soft start as during a normal power-up cycle.
ADDITIONAL REFERENCES
Related Devices
The devices listed in have characteristics similar to the TPS40304A and may be of interest.
Table 1. Related Devices
DEVICE
DESCRIPTION
TPS40303/4/5
3-V to 20-V Input Synchronous Buck Controller
References
These references, design tools and links to additional references, including design software, may be found at
1. Additional PowerPAD information may be found in Applications Briefs (SLMA002A) and (SLMA004).
2. Under The Hood Of Low Voltage DC/DC Converters – SEM1500 Topic 5 – 2002 Seminar Series
3. Understanding Buck Power Stages in Switchmode Power Supplies, (SLVA057), March 1999
4. Designing Stable Control Loops – SEM 1400 – 2001 Seminar Series
Package Outline and Recommended PCB Footprint
The following pages outline the mechanical dimensions of the 10-pin DRC package and provide
recommendations for PCB layout.
Copyright 2010, Texas Instruments Incorporated
13
Product Folder Link(s) :TPS40304A
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS40304ADRCT | 功能描述:DC/DC 开关控制器 3V-20V Wide Inp Sync Buck Controller RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| TPS40304DRCR | 功能描述:DC/DC 开关控制器 3-20V Wide Input Synch Buck Cntrlr RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| TPS40304DRCT | 功能描述:DC/DC 开关控制器 3-20V Wide Input Synch Buck Cntrlr RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| TPS40304DRCT | 制造商:Texas Instruments 功能描述:Synchronous Buck Controller IC 制造商:Texas Instruments 功能描述:IC, SYNC BUCK CONTROLLER, SON-10 |
| TPS40304EVM-353 | 功能描述:电源管理IC开发工具 Eval with NexFET Pwr MOSFETs RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
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