TPS60312 - 单节至 3.3V 20mA 超低静态电流充电泵

TPS60312是TI德州仪器公司的一款电荷泵（无感应器）产品，TPS60312是单节至 3.3V 20mA 超低静态电流充电泵，本站介绍了TPS60312的封装应用图解、特点和优点、功能等，并给出了与TPS60312相关的TI元器件型号供参考。

TPS60312 - 单节至 3.3V 20mA 超低静态电流充电泵 - 电荷泵（无感应器） - DC/DC开关稳压器 - 德州仪器

产品描述

The TPS6031X step-up, regulated charge pumps generate a 3-V ±4% or 3.3-V ±4% output voltage from a 0.9-V to 1.8-V input voltage (one alkaline, NiCd, or NiMH battery).

Only five small 1-uF ceramic capacitors are required 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 3x or 4x conversion mode.

Output 1 (OUT1) can deliver a maximum of 40 mA, from a 1-V input, with output 2 (OUT2) not loaded. OUT2 can deliver a maximum of 20 mA, from a 1-V input, with OUT1 not loaded. Both outputs can be loaded at the same time, but the total output current of the first voltage doubler must not exceed 40 mA. For example, the load at OUT1 is 20 mA and the load at output 2 is 10 mA.

In snooze mode, the devices operate with a typical operating current of 2 uA, while the output voltage is maintained at 3.3 V ±10% or 3 V ±10%, respectively. This is lower than the self-discharge current of most batteries. Load current in snooze mode is limited to 2 mA. If the load current increases above 2 mA, the output voltage drops further and the devices automatically exits the snooze mode and operate in normal mode to regulate to the nominal output voltage with higher output currents. The device is set into the snooze mode by taking the SNOOZE\ pin low, and is set into normal operating mode by taking the SNOOZE\ pin high.

A power-good function supervises the output voltage of OUT2 and can be used for power up and power down sequencing. Power-good (PG) is offered as either open-drain or push-pull output.

产品特性

Regulated 3-V or 3.3-V Output Voltage With up to 20-mA Output Current From a 0.9-V to 1.8-V Input Voltage Range
High Power Conversion Efficiency (up to 90%) Over Wide Output Current Range, Optimized for 1.2-V Battery Voltage
Snooze Mode for Improved Efficiency at Low-Output Current
Additional Output With 2 Times VI (OUT1)
Device Quiescent Current Less Than 2 uA
Supervisor Included; Open Drain or Push-Pull Power Good Output
No Inductors Required/Low EMI
Only Five Small, 1-uF Ceramic Capacitors Required
Microsmall 10-Pin MSOP Package
applications
- Pagers
- Battery-Powered Toys
- Portable Measurement Instruments
- Home Automation Products
- Medical Instruments (Like Hearing Instruments)
- Metering Applications Using MSP430 Microcontroller
- Portable Smart Card Readers

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