TPS62748 - 具有超低静态电流和负载开关的高效降压转换器

TPS62748是TI德州仪器公司的一款转换器（集成开关）产品，TPS62748是具有超低静态电流和负载开关的高效降压转换器，本站介绍了TPS62748的封装应用图解、特点和优点、功能等，并给出了与TPS62748相关的TI元器件型号供参考。

TPS62748 - 具有超低静态电流和负载开关的高效降压转换器 - 转换器（集成开关） - DC/DC开关稳压器 - 德州仪器

产品特性

Input Voltage Range VIN from 2.15 V to 5.5 V
Input Voltage Range Down to 2.0 V Once Started
300 mA Output Current
360 nA Operational Quiescent Current
Up to 90% Efficiency at 10-µA Output Current
Power Save Mode Operation
Selectable Output Voltages
- 1.2 V and 1.8 V
Output Voltage Discharge
100 mA/2.2 Ω Integrated Load Switch
Low Output Voltage Ripple
Automatic Transition to No Ripple 100% Mode
RF Friendly DCS-Control™
Total Solution Size <10mm2
Small 1.6 mm × 0.9 mm, 8 Ball WCSP Package

产品应用

Wearables
Fitness Tracker
Smart Watch
Health Monitoring
Bluetooth® Low Energy, RF4CE, Zigbee
High-efficiency, Ultra Low Power Applications
Energy Harvesting

产品说明

The TPS62748 is a high efficiency step down converter with ultra low quiescent current of typical 360 nA. The device is optimized to operate with a 2.2-µH inductor and 10µF output capacitor. The device uses DCS-Control™ and operates with a typical switching frequency of 1.2 MHz. In Power Save Mode the device extends the light load efficiency down to a load current range of 10-µA and below. TPS62748 provides an output current of 300 mA. Once started the device operates down to an input voltage range of 2.0 V. This allows to operate the device directly from a single Li-MnO2 coin cell.

The TPS62748 provides two programmable output voltages of 1.2V and 1.8V selectable by one voltage select pin. The TPS62748 is optimized to provide a low output voltage ripple and low noise using a small output capacitor. Once the input voltage comes close to the output voltage the device enters the No Ripple 100% mode to prevent an increase of output ripple voltage. In this operation mode the device stops switching and turns the high side MOSFET switch on.

The TPS62748 has a 100 mA load switch between pins VOS and LOAD with a typical ON-resistance of 0.6 Ohm. The load switch is typically used to distribute the buck converter output voltage to the sub-system.

产品器件信息

PART NUMBER	PACKAGE	BODY SIZE (NOM)
TPS62748	DSBGA (8)	1.6 mm × 0.9 mm

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