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TPS51125A

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具有 100mA LDO 和灵活外部元件的 4.5V 至 28V 双通道同步降压控制器

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TPS51397A 正在供货 4.5V 至 24V 输入、10A 同步降压稳压器 Offers a lower IQ and is soft start adjustable with an extended positive operating temperature range in a smaller package.

TPS51125A

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产品详情

Vin (min) (V) 5.5 Vin (max) (V) 28 Iout (max) (A) 20 Operating temperature range (°C) -40 to 85 Control mode D-CAP Rating Catalog Vout (min) (V) 2 Vout (max) (V) 5.5 Iq (typ) (A) 0.00055 Duty cycle (max) (%) 93 Number of phases 1
Vin (min) (V) 5.5 Vin (max) (V) 28 Iout (max) (A) 20 Operating temperature range (°C) -40 to 85 Control mode D-CAP Rating Catalog Vout (min) (V) 2 Vout (max) (V) 5.5 Iq (typ) (A) 0.00055 Duty cycle (max) (%) 93 Number of phases 1
VQFN (RGE) 24 16 mm² 4 x 4
  • Wide Input Voltage Range: 5.5 V to 28 V
  • Output Voltage Range: 2 V to 5.5 V
  • Built-in 100-mA 5-V/3.3-V LDO with Switches
  • Built-in 1% 2-V Reference Output
  • With/Without Out-of-Audio™ Mode Selectable Light Load and PWM only Operation
  • Internal 1.6-ms Voltage Servo Softstart
  • Adaptive On-Time Control Architecture with Four Selectable Frequency Setting
  • 4500 ppm/°C RDS(on) Current Sensing
  • Built-In Output Discharge
  • Power Good Output
  • Built-in OVP/UVP/OCP
  • Thermal Shutdown (Non-latch)
  • QFN24 (RGE)
  • Wide Input Voltage Range: 5.5 V to 28 V
  • Output Voltage Range: 2 V to 5.5 V
  • Built-in 100-mA 5-V/3.3-V LDO with Switches
  • Built-in 1% 2-V Reference Output
  • With/Without Out-of-Audio™ Mode Selectable Light Load and PWM only Operation
  • Internal 1.6-ms Voltage Servo Softstart
  • Adaptive On-Time Control Architecture with Four Selectable Frequency Setting
  • 4500 ppm/°C RDS(on) Current Sensing
  • Built-In Output Discharge
  • Power Good Output
  • Built-in OVP/UVP/OCP
  • Thermal Shutdown (Non-latch)
  • QFN24 (RGE)

The TPS51125A is a cost effective, dual-synchronous buck controller targeted for notebook system power supply solutions. It provides 5-V and 3.3-V LDOs and requires few external components. The 270-kHz VCLK output can be used to drive an external charge pump, generating gate drive voltage for the load switches without reducing the main converter’s efficiency. The TPS51125A supports high efficiency, fast transient response and provides a combined power-good signal. Out-of-Audio mode light-load operation enables low acoustic noise at much higher efficiency than conventional forced PWM operation. Adaptive on-time D-CAP control provides convenient and efficient operation. The part operates with supply input voltages ranging from 5.5 V to 28 V and supports output voltages from 2 V to 5.5 V. The TPS51125A is available in a 24-pin QFN package and is specified from -40°C to 85°C ambient temperature range.

The TPS51125A is a cost effective, dual-synchronous buck controller targeted for notebook system power supply solutions. It provides 5-V and 3.3-V LDOs and requires few external components. The 270-kHz VCLK output can be used to drive an external charge pump, generating gate drive voltage for the load switches without reducing the main converter’s efficiency. The TPS51125A supports high efficiency, fast transient response and provides a combined power-good signal. Out-of-Audio mode light-load operation enables low acoustic noise at much higher efficiency than conventional forced PWM operation. Adaptive on-time D-CAP control provides convenient and efficient operation. The part operates with supply input voltages ranging from 5.5 V to 28 V and supports output voltages from 2 V to 5.5 V. The TPS51125A is available in a 24-pin QFN package and is specified from -40°C to 85°C ambient temperature range.
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类型 标题 下载最新的英语版本 日期
* 数据表 Dual-Synchronous, Step-Down Controller With OOA Operation and 100-mA LDOs 数据表 (Rev. F) 2012年 9月 10日
用户指南 TPS51125A 降压控制器评估模块用户指南 (Rev. A) PDF | HTML 英语版 (Rev.A) PDF | HTML 2022年 7月 12日
应用手册 Intel Atom Z5xx [Menlow] 参考设计 2010年 10月 8日

设计和开发

如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。

仿真模型

TPS51125 Unencrypted PSpice Average Model Package (Rev. B)

SLIM147B.ZIP (73 KB) - PSpice Model
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仿真模型

TPS51125 Unencrypted PSpice Transient Model Package (Rev. B)

SLIM134B.ZIP (52 KB) - PSpice Model
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封装 引脚 下载
VQFN (RGE) 24 查看选项
应遵守 TI 评估类商品的标准条款与条件。

订购和质量

包含信息：
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
包含信息：
  • 制造厂地点
  • 封装厂地点

支持和培训

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