LPQ65131 Positive and Negative Output DC-DC Converter

PublishTime： 2024-01-05 Manufacturer： LPSemi

●General Description
■The CC100 device is a dual-output DC-DC converter supply that generates a positive output up to 15 V and a negative output down to –15 V. The converter maintains low output voltage ripple. Typically, the maximum output currents are in the 200-mA to 500-mA range, depending on input voltage to output voltage ratio and the current limit option. The combined (VPOS and VNEG) efficiency reaches 85% to keep systems cool or achieve a longer battery-on time. The input voltage range of 2.7 V to 5.5 V allows the devices to be powered from batteries or from fixed 3.3-V or 5-V rails.
■The converter operates with a fixed frequency PWM control topology and, when operating in power save mode, uses a pulse-skipping mode at light load currents. It operates with only 500-μA device quiescent current.
■Independent enable pins allow flexible power-up and power-down sequencing for both outputs. The positive and negative outputs operate independently, allowing for non-symmetrical output voltages and currents.
■The converter has an internal current limit, over voltage protection, and a thermal shutdown for highest reliability under fault conditions. The converter is available in a 4-mm × 4-mm QFN-24 package. The solution size is small with a minimum switching frequency of 1.25 MHz for smaller inductors and few other external components required.
●Features
■Input voltage range: 2.7-V to 5.5-V
■AEC-Q100 Grade 2 Qualified
■VPOS positive boost converter output
◆Adjustable output: up to 15 V
◆Switch current limit 2 A
◆Conversion efficiency: up to 89%
■VNEG negative inverting buck-boost converter output
◆Adjustable output: down to –15 V
◆Switch current limit 2 A
◆Conversion efficiency: up to 81%
■Control output for external P-channel FET
■Supports complete disconnection from battery
■1-μA shutdown current
■Individual enable inputs for flexible output sequencing
■Protection features
◆Over voltage protection at VPOS and VNEG
◆Input under voltage lockout
◆VPOS and VNEG SCP
◆Thermal shutdown protection
■4-mm × 4-mm QFN-24 package

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