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ST1S32 датащи(PDF) 1 Page - STMicroelectronics |
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ST1S32 датащи(HTML) 1 Page - STMicroelectronics |
1 / 29 page This is information on a product in full production. May 2012 Doc ID 023246 Rev 1 1/29 29 ST1S32 4 A DC step-down switching regulator Datasheet — production data Features ■ 4 A DC output current ■ 2.8 V to 5.5 V input voltage ■ Output voltage adjustable from 0.8 V ■ 1.5 MHz switching frequency ■ Internal soft-start and enable ■ Integrated 60 m Ωand 45 mΩPower MOSFETs ■ All ceramic capacitor ■ Power Good (POR) ■ Cycle-by-cycle current limiting ■ Current foldback short-circuit protection ■ VFDFPN 8 4x4x1.0 package Applications ■ µP/ASIC/DSP/FPGA core and I/O supplies ■ Point of Load for: STB, TV, DVD ■ Optical storage, hard disk drives, printers, audio/graphic cards Description The ST1S32 is an internally compensated 1.5 MHz fixed-frequency PWM synchronous step- down regulator. The ST1S32 operates from 2.8 V to 5.5 V input, while it regulates an output voltage as low as 0.8 V and up to VIN. The ST1S32 integrates a 60 m Ω high-side switch and a 45 m Ω synchronous rectifier, allowing very high efficiency with very low output voltages. The peak current mode control with internal compensation delivers a very compact solution with a minimum component count. The ST1S32 is available in 4 mm x 4 mm, 8-lead VFDFPN package. Figure 1. Application circuit VFDFPN 8 4x4x1.0 VINSW SW VFB PG GND EN ST1S32 Cin_sw Cout L R1 R2 VINA Cin_a R3 VOUT VIN AM12608V1 www.st.com |
Аналогичный номер детали - ST1S32 |
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Аналогичное описание - ST1S32 |
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