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PM8908TR Datasheet(PDF) 1 Page - STMicroelectronics |
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PM8908TR Datasheet(HTML) 1 Page - STMicroelectronics |
1 / 28 page This is information on a product in full production. November 2015 DocID027688 Rev 3 1/28 PM8908 Monolithic buck converter for DDR memory termination Datasheet - production data Features Integrated MOSFETs for high efficiency Current COT architecture 1 V to 3.5 V input voltage (V IN) 5.0 V supply voltage (V CC) Constant frequency mode 1% output voltage accuracy Two programmable switching frequencies (0.6 MHz or 1 MHz) ADJ output voltage from 0.5 V to 2 V Embedded bootstrap diode OV/UV/OC and overtemperature protection Soft-off with integrated discharge resistor External tracking Power Good output QFN20 3.5 x 4.0 mm compact package Applications Memory termination regulator for DDR3, DDR4 and low power DDR3/DDR4 Notebook/desktop/server Low voltage application for 1 V to 3.5 V input rails Description The PM8908 is a high efficiency monolithic step- down switching regulator designed mainly for the DDR termination. The IC operates from 1 V to 3.5 V input voltage (VIN). The device uses a COT control loop that provides very good performances in terms of load and line transients. The current sense is internally thermally compensated for optimum precision. The output voltage is adjusted from 0.5 V to 2 V with ± 1% accuracy overtemperature variations. The PM8908 also provides external tracking support. The PM8908 provides positive and negative overcurrent protection as well as over/undervoltage and overtemperature protection. PGOOD output easily provides real- time information on the output voltage. The PM8908 is available in a QFN20 3.5 x 4.0 mm package. QFN20 3.5 x 4.0 mm Table 1. Device summary Order code Package Packaging PM8908TR QFN20 (3.5 x 4.0 mm) Tape and reel www.st.com |
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