TPS62421 - 采用 3x3mm QFN 小型封装的 2.25MHz 600mA/1000mA 双路降压转换器

TPS62421是TI德州仪器公司的一款转换器（集成开关）产品，TPS62421是采用 3x3mm QFN 小型封装的 2.25MHz 600mA/1000mA 双路降压转换器，本站介绍了TPS62421的封装应用图解、特点和优点、功能等，并给出了与TPS62421相关的TI元器件型号供参考。

TPS62421 - 采用 3x3mm QFN 小型封装的 2.25MHz 600mA/1000mA 双路降压转换器 - 转换器（集成开关） - DC/DC开关稳压器 - 德州仪器

产品特性

High Efficiency up to 95%
VIN Range from 2.5 V to 6 V
2.25-MHz Fixed Frequency Operation
Output Current 600 mA and 1000 mA
Adjustable Output Voltage from 0.6 V to VIN
Pin Selectable Output Voltage Supports Simple Dynamic Voltage Scaling
Optional EasyScale™ One-Pin Serial Interface for Dynamic Output Voltage Adjustment
Power-Save Mode at Light Load Currents
180° Out of Phase Operation
Output Voltage Accuracy in PWM Mode ±1%
Typical 32-μA Quiescent Current for both Converters
100% Duty Cycle for Lowest Dropout
Available in a 10-Pin VSON (3 mm × 3 mm)

产品应用

Cell Phones, Smart-phones
PDAs, Pocket PCs
OMAP™ and Low Power DSP Supply
Portable Media Players
Digital Radios
Digital Cameras

产品说明

The TPS6242x device is a synchronous dual step-down DC–DC converter. It provides two independent output voltage rails powered by 1-cell Li-Ion or 3-cell NiMH/NiCD batteries. The device is also suitable to operate from a standard 3.3-V or 5-V voltage rail.

With an input voltage range of 2.5 V to 6 V, the TPS6242x is ideal for battery-powered portable applications like smart phones, PDAs, and other portable equipment.

With the EasyScale™ serial interface the output voltages can be modified during operation. It therefore supports dynamic voltage scaling for low power DSP and processors.

The TPS6242x operates at 2.25-MHz fixed switching frequency and enter the power-save mode operation at light load currents to maintain high efficiency over the entire load current range. For low-noise applications the devices can be forced into fixed-frequency PWM mode by pulling the MODE/DATA pin High. In the shutdown mode, the current consumption is reduced to 1.2 μA. The device allows the use of small inductors and capacitors to achieve a small solution size.

The TPS6242x operates over a free-air temperature range of –40°C to 85°C. It is available in a 10-pin leadless package (3 mm × 3 mm VSON)

产品器件信息

PART NUMBER	PACKAGE	BODY SIZE (NOM)
TPS62420 TPS62421	VSON (10)	3.00 mm × 3.00 mm

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