The TPS53311 provides a fully integrated 3-V to 5-V V_IN integrated synchronous FET converter solution with 16 total components, in 200 mm² of PCB area. Due to the low R_DS(on) and TI Proprietary SmoothPWM™ skip mode of operation, it enables 95.5% peak efficiency, and over 90% efficiency at loads as light as 100 mA. It requires only two 22-µF ceramic output capacitors for a power-dense, 3-A solution.

The TPS53311 features a 1.1-MHz switching frequency, SKIP mode operation support, prebias start-up, internal soft start, output soft discharge, internal VBST switch, power good, EN/input UVLO, overcurrent, overvoltage, undervoltage, and overtemperature protections and all ceramic output capacitor support. It supports supply voltage from 2.9 V to 3.5 V and conversion voltage from 2.9 V to 6 V, and output voltage is adjustable from 0.6 V to 0.84 V × V_IN.

The TPS53311 is available in the 3 mm × 3 mm 16-pin VQFN package (Green RoHs compliant and Pb free) and operates between –40°C and 85°C.

• 95.5% Maximum Efficiency
• Continuous 3-A Output Current
• Supports All MLCC Output Capacitor
• SmoothPWM? Auto-Skip Eco-mode? for Light-Load Efficiency
• Voltage Mode Control
• Supports Master-Slave Interleaved Operation
• Synchronization up to ±20% of Nominal Frequency
• Conversion Voltage Range From 2.9 V to 6 V
• Soft-Stop Output Discharge During Disable
• Adjustable Output Voltage Ranging From 0.6 V to 0.84 V × VIN
• Overcurrent, Overvoltage, and Overtemperature Protection
• Small, 3 mm × 3 mm, 16-Pin VQFN Package
• Open-Drain Power Good Indication
• Internal Boot Strap Switch
• Low RDS(on), 24 mΩ With 3.3-V Input and 19-mΩ With 5-V Input
• Supports Prebias Start-Up Functionality

• Vin (Min) (V)
• 2.9
• Vin (Max) (V)
• 6
• Vout (Min) (V)
• 0.6
• Vout (Max) (V)
• 4.2
• Iout (Max) (A)
• 3
• Iq (Typ) (uA)
• 320
• Switching frequency (Min) (kHz)
• 1100
• Switching frequency (Max) (kHz)
• 1100
• Features
• Enable, Light Load Efficiency, Output Discharge, Phase Interleaving, Power Good, Pre-Bias Start-Up, Synchronous Rectification
• Rating
• Catalog
• Regulated outputs (#)
• 1
• Control mode
• Voltage Mode
• Duty cycle (Max) (%)
• 99

TPS53311的完整型号有：TPS53311RGTR、TPS53311RGTT，以下是这些产品的关键参数及官网采购报价：

TPS53311RGTR，工作温度：-40 to 85，封装：VQFN (RGT)-16，包装数量MPQ：3000个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网TPS53311RGTR的批量USD价格：.81（1000+）

TPS53311RGTT，工作温度：-40 to 85，封装：VQFN (RGT)-16，包装数量MPQ：250个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网TPS53311RGTT的批量USD价格：.972（1000+）

TPS53311EVM-561 — 用于 TPS53311 同步降压 DCDC 转换器的评估模块

TPS53311EVM-561 是一块完全组装且经过测试的电路板，用于评估 TPS53311 同步降压 DC/DC 转换器。

TPS53311 PSpice Average Model

PSpice for TI 可提供帮助评估模拟电路功能的设计和仿真环境。此功能齐全的设计和仿真套件使用 Cadence 的模拟分析引擎。PSpice for TI 可免费使用，包括业内超大的模型库之一，涵盖我们的模拟和电源产品系列以及精选的模拟行为模型。

借助?PSpice for TI 的设计和仿真环境及其内置的模型库，您可对复杂的混合信号设计进行仿真。创建完整的终端设备设计和原型解决方案，然后再进行布局和制造，可缩短产品上市时间并降低开发成本。

在?PSpice for TI 设计和仿真工具中，您可以搜索 TI (...)

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