TPS61240 - 5V、400mA、4MHz 升压 DC/DC 转换器

TPS61240是TI德州仪器公司的一款转换器（集成开关）产品，TPS61240是5V、400mA、4MHz 升压 DC/DC 转换器，本站介绍了TPS61240的封装应用图解、特点和优点、功能等，并给出了与TPS61240相关的TI元器件型号供参考。

TPS61240 - 5V、400mA、4MHz 升压 DC/DC 转换器 - 转换器（集成开关） - DC/DC开关稳压器 - 德州仪器

产品特性

Efficiency > 90% at Nominal Operating Conditions
Total DC Output Voltage Accuracy 5.0 V±2%
Typical 30-μA Quiescent Current
Best in Class Line and Load Transient
Wide VIN Range From 2.3 V to 5.5 V
Output Current up to 450 mA
Automatic PFM/PWM Mode Transition
Low Ripple Power Save Mode for Improved Efficiency at Light Loads
Internal Softstart, 250-μs Typical Start-Up Time
3.5-MHz Typical Operating Frequency
Load Disconnect During Shutdown
Current Overload and Thermal Shutdown Protection
Three Surface-Mount External Components Required (One MLCC Inductor, Two Ceramic Capacitors)
Total Solution Size <13 mm2
Available in a 6-Pin DSBGA and 2-mm × 2-mm WSON Package

产品应用

USB-OTG Applications
Portable HDMI Applications
Cell Phones, Smart Phones
PDAs, Pocket PCs
Portable Media Players
Digital Cameras

产品说明

The TPS6124x device is a highly efficient synchronous step-up DC-DC converter optimized for products powered by either a three-cell alkaline, NiCd or NiMH, or one-cell Li-Ion or Li-Polymer battery. The TPS6124x supports output currents up to 450 mA. The TPS61240 has an input valley current limit of 500 mA, and the TPS61241 has an input valley current of 600 mA.

With an input voltage range of 2.3 V to 5.5 V, the device supports batteries with extended voltage range and are ideal to power portable applications like mobile phones and other portable equipment. The TPS6124x boost converter is based on a quasi-constant on-time valley current mode control scheme.

The TPS6124x presents a high impedance at the VOUT pin when shut down. This allows for use in applications that require the regulated output bus to be driven by another supply while the TPS6124x is shut down.

During light loads the device will automatically pulse skip allowing maximum efficiency at lowest quiescent currents. In the shutdown mode, the current consumption is reduced to less than 1 μA.

TPS6124x allows the use of small inductors and capacitors to achieve a small solution size. During shutdown, the load is completely disconnected from the battery. The TPS6124x is available in a 6-pin DSBGA and 2-mm × 2-mm WSON package.

产品器件信息

PART NUMBER	PACKAGE	BODY SIZE (NOM)
TPS61240	WSON (6)	2.00 mm × 2.00 mm
TPS61240	DSBGA (6)	1.25 mm × 0.86 mm
TPS61241	DSBGA (6)	1.25 mm × 0.86 mm

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