TPS60400-Q1

汽车类未稳压 60mA 充电泵电压反向器

The TPS6040x-Q1 family of devices generate an unregulated negative output voltage from an input voltage ranging from 1.8 V to 5.25 V. The devices are typically supplied by a preregulated supply rail of 5 V or 3.3 V. Due to its wide-input voltage range, two or three NiCd, NiMH, or alkaline battery cells, as well as one Li-Ion cell, can also power them.

Only three external 1-µF capacitors are required to build a complete DC-DC charge pump inverter. Assembled in a 5-pin SOT-23 package, the complete converter can be built on a 50-mm2 board area. Replacing the Schottky diode typically needed for start-up into load with integrated circuitry can achieve additional board area and component count reduction.

The TPS6040x-Q1 can deliver a maximum output current of 60 mA, with a typical conversion efficiency of greater than 90% over a wide output current range. Three device options TPS60401/2/3-Q1 with 20-kHz, 50-kHz, and 250-kHz fixed frequency operation are available. device comes with a variable switching frequency to reduce operating current in applications with a wide load range and enables the design with low-value capacitors.

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Qualified for Automotive Applications

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AEC-Q100 Test Guidance With the Following Results:

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Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature Range

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Device HBM ESD Classification Level 2

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Device CDM ESD Classification Level C6

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Inverts Input Supply Voltage

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Up to 60-mA Output Current

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Only Three Small 1-µF Ceramic Capacitors Needed

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Input Voltage Range From 1.8 V to 5.25 V

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PowerSave-Mode for Improved Efficiency at Low Output Currents TPS60400-Q1

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Device Quiescent Current Typical: 100 µA

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Integrated Active Schottky-Diode for Start-Up Into Load

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Small 5-Pin SOT23 Package

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Evaluation Module Available: TPS60400EVM-178