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ST2S08B датащи(PDF) 1 Page - STMicroelectronics |
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ST2S08B датащи(HTML) 1 Page - STMicroelectronics |
1 / 18 page This is information on a product in full production. May 2012 Doc ID 18290 Rev 2 1/18 18 ST2S08B Dual synchronous rectification, 1.5 A, 1.5 MHz adjustable step-down switching regulator Datasheet − production data Features ■ Step-down current mode PWM (1.5 MHz) DC- DC converter ■ Adjustable output voltage from 0.8 V ■ 2 % DC output voltage tolerance ■ Synchronous rectification ■ Integrated current limit ■ Inhibit function ■ Soft-start for start delay of 800 µs typ. ■ Typical efficiency: > 80 % at VOUT = 1.2 V ■ 1.5 A output current capability ■ Non-switching quiescent current: max 1.5 mA over temperature range ■ RDS(ON) 150 mΩ (typ.) ■ Uses tiny capacitors and inductors ■ Available in QFN12L (4 x 4 mm) Description The ST2S08B is a dual step-down DC-DC converter optimized for powering low-voltage digital cores in ODD applications and, generally, to replace the high current linear solution when the power dissipation may cause a high heating of the application environment. It provides up to 1.5 A over an input voltage range of 3 V to 5.5 V. A high switching frequency of 1.5 MHz allows the use of tiny surface-mounted components as well as a resistor divider to set the output voltage value. Only an inductor and two capacitors are required. A low output ripple is guaranteed by the current mode PWM topology and the utilization of low ESR SMD ceramic capacitors. The device is thermally protected and current limited. The ST2S08B is available in the QFN12L (4 x 4 mm) package. QFN12L (4 x 4 mm) Table 1. Device summary Order code Package Packaging ST2S08BPQR QFN12L (4 x 4 mm) Tape and reel www.st.com |
Аналогичный номер детали - ST2S08B |
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Аналогичное описание - ST2S08B |
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