TPS60121 - 稳压 3.3V 高功率充电泵 DC/DC 转换器

TPS60121是TI德州仪器公司的一款电荷泵（无感应器）产品，TPS60121是稳压 3.3V 高功率充电泵 DC/DC 转换器，本站介绍了TPS60121的封装应用图解、特点和优点、功能等，并给出了与TPS60121相关的TI元器件型号供参考。

TPS60121 - 稳压 3.3V 高功率充电泵 DC/DC 转换器 - 电荷泵（无感应器） - DC/DC开关稳压器 - 德州仪器

产品描述

The TPS6012x step-up, regulated charge pumps generate a 3.3-V or 3-V ±4% output voltage from a 1.8-V to 3.6-V input voltage (two alkaline, NiCd, or NiMH batteries). They can deliver an output current of at least 200 mA (100 mA for the TPS60122 and TPS60123), all from a 2-V input. Four external capacitors are needed to build a complete high efficiency dc/dc charge pump converter. To achieve the high efficiency over a wide input voltage range, the charge pump automatically selects between a 1.5x or doubler conversion mode. From a 2-V input, all ICs can start with full load current.

The devices feature the power-saving pulse-skip mode to extend battery life at light loads. TPS60120, TPS60122, and TPS60124 include a low battery comparator. TPS60121, TPS60123, and TPS60125 feature a power-good output. The logic shutdown function reduces the supply current to a maximum of 1uA and disconnects the load from the input. Special current-control circuitry prevents excessive current from being drawn from the battery during start-up. This dc/dc converter requires no inductors, therefore EMI is of low concern. It is available in the small, thermally enhanced 20-pin PowerPADTM package (PWP).

产品特性

High Average Efficiency Over Input Voltage Range Because of Special Switching Topology
Minimum 200-mA Output Current From an Input Voltage Range of 1.8-V to 3.6-V
Regulated 3.3-V or 3-V ±4% Output Voltage
No Inductors Required, Low EMI
Only Four External Components Required
55-uA Quiescent Supply Current
0.05-uA Shutdown Current
Load Disconnected in Shutdown
Integrated Low Battery and Power Good Detectors
Evaluation Module Available (TPS60120EVM-142)
Applications
- Applications Powered by Two Battery Cells
- Portable Instruments
- Battery-Powered Microprocessor Systems
- Miniature Equipment
- Backup-Battery Boost Converters
- PDAs, Organizers, Laptops
- MP-3 Portable Audio Players
- Handheld Instrumentation
- Medical Instruments (e.g., Glucose Meters)
- Cordless Phones

PowerPAD is a trademark of Texas Instruments Incorporated.

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