TPS621351RGXR Texas Instruments MCU

TPS621351RGXR Overview

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Description

The TPS62135 and TPS621351 are high efficiency and easy to use synchronous step-downDC-DC converters, based on the DCS-Control?Topology. The devices wide input voltage range of 3-V to 17-V makes it suitable for multi-cellLi-Ion as well as 12-V intermediate supply rails. The devices provide 4-A continuous outputcurrent. The TPS62135 automatically enters Power Save Mode at light loads to maintain highefficiency across the whole load range. With that, the device is well suited for applications thatrequire connected standby performance, like ultra low power computers. With the MODE pin set tolow, the switching frequency of the device is adapted automatically based on the input and outputvoltage. This technique is called Automatic Efficiency Enhancement (AEE?) and maintains highconversion efficiency over the whole operation range. It provides a 1% output voltage accuracy inPWM mode and therefore enables the design of a power supply with high output voltageaccuracy.

The device has a typical quiescent current of 18 μA. In shutdown mode the current istypically 1 μA and the output is actively discharged for TPS62135 while the output voltagedischarge feature is disabled in TPS621351.

The TPS62135 is available as an adjustable version, packaged in a 3-mm x 2-mm VQFNpackage.

Features

Output Voltage Accuracy ± 1% (PWM mode)
Input Voltage Range: 3 V to 17V
Quiescent Current 18 μA Typ
Output Voltage from 0.8 V to12 V
Adjustable Soft-Start
Forced PWM or PWM/PFMoperation
Typical switching frequency of 2.5MHz in forcedPWM
Precise ENABLE input allows
- User-Defined Undervoltage Lockout
- Exact Sequencing
100% Duty Cycle Mode
AutomaticEfficiency Enhancement AEE?
DCS-Control? Topology
Available with Active Output Discharge
Optional HICCUP Overcurrent Protection
Power GoodOutput
Available in 3-mm x 2-mm VQFN Package