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| 型号： | PT6702N |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 13 A SWITCHING REGULATOR, 400 kHz SWITCHING FREQ-MAX, SMA23 |
| 封装： | VERTICAL MOUNT PACKAGE-23 |
| 文件页数： | 5/7页 |
| 文件大小： | 173K |
| 代理商： | PT6702N |
For technical support and more information, see inside back cover or visit www.ti.com/powertrends
Application Notes continued
Table 1 Capacitors Characteristic Data
Input Capacitors
The recommended input capacitance is determined by the
2.0 ampere minimum ripple current rating and 1000F
minimum capacitance. Capacitors listed below must be
rated for a minimum of 2x the input voltage with +5V
operation. Ripple current and
≤100m Equivalent Series
Resistance (ESR) values are the major considerations
along with temperature when selecting the proper capacitor.
Output Capacitors
The minimum required output capacitance is 330F with
a maximum ESR less than or equal to 100m
. Failure
to observe this requirement may lead to regulator insta-
bility or oscillation. Electrolytic capacitors have poor
ripple performance at frequencies greater than 400kHz,
but excellent low frequency transient response. Above
the ripple frequency ceramic decoupling capacitors are nec-
essary to improve the transient response and reduce any
high frequency noise components apparent during higher
current excursions. Preferred low ESR type capacitor part
numbers are identified in Table 1 below.
Tantalum Characteristics
Tantalum capacitors with a minimum 10V rating are
recommended on the output bus, but only the AVX TPS
Series, Sprague 594/595 Series, or Kemet T495/T510
Series. The AVX TPS Series, Sprague Series or Kemet
Series capacitors are specified over other types due to their
higher surge current, excellent power dissipation and ripple
current ratings. As an example, the TAJ Series by AVX
is not recommended. This series exhibits considerably
higher ESR, reduced power dissipation and lower ripple
current capability. The TAJ Series is a less reliable
compared to the TPS series when determining power
dissipation capability.
Capacitor Table
Table 1 identifies the characteristics of capacitors from
a number of vendors with acceptable ESR and ripple cur-
rent (rms) ratings. The suggested minimum quantities
per regulator for both the input and output buses are identi-
fied.
This is not an extensive capacitor list. The table below is a
suggested selection guide for input and output capacitors. Other
capacitor vendors are available with comparable RMS ripple
current rating and ESR (Equivalent Series Resistance at 100kHz).
These critical parameters are necessary to insure both optimum
regulator performance and long capacitor life.
Capacitor Recommendations for
the Non-Isolated
13A Excalibur Series of Regulators
PT6701, PT6702, PT6705 Series,
& PT6715 Series
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相关PDF资料 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| PT6703 | 制造商:TI 制造商全称:Texas Instruments 功能描述:13-A Low-Voltage Programmable Integrated Switching Regulator |
| PT6703A | 功能描述:开关变换器、稳压器与控制器 1.1 to 1.85V 5/3.3V Input 13A Prog ISR RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| PT6703C | 功能描述:DC/DC转换器 1.1 to 1.85V 5/3.3V Input 13A Prog ISR RoHS:否 制造商:Murata 产品: 输出功率: 输入电压范围:3.6 V to 5.5 V 输入电压（标称）: 输出端数量:1 输出电压（通道 1）:3.3 V 输出电流（通道 1）:600 mA 输出电压（通道 2）: 输出电流（通道 2）: 安装风格:SMD/SMT 封装 / 箱体尺寸: |
| PT6703N | 功能描述:开关变换器、稳压器与控制器 1.1 to 1.85V 5/3.3V Input 13A Prog ISR RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| PT6705 | 制造商:TI 制造商全称:Texas Instruments 功能描述:13 Amp 5V/3.3V Input Adjustable Integrated Switching Regulator |
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