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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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SC401B датащи(PDF) 1 Page - Semtech Corporation |
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SC401B датащи(HTML) 1 Page - Semtech Corporation |
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1 / 32 page  © 2011 Semtech Corporation 1 SC401B 15A Integrated FET Regulator with Programmable LDO Features Power System Input voltage — 3V to 17V Bias voltage — 3V to 5.5V LDO or external Up to 96% peak efficiency Integrated bootstrap switch Programmable LDO output — 200mA Reference tolerance — 1% T J= -40 to +125 °C Programmable soft-start time Logic Input/Output Control Independent EN controls for LDO and switcher Programmable V IN UVLO threshold Power good output Selectable PSAVE or FCM mode Protection Over-voltage and under-voltage TC compensated R DS(ON) sensed current limit Thermal Shutdown Output Capacitor Types High ESR — SP, POSCAP, OSCON Ceramic capacitors Package Lead-free package — 5x5mm, 32-Pin MLPQ RoHS/WEEE compliant and Halogen free Applications Networking and telecommunication equipment Printers, DSL, and STB applications Embedded systems and power supply modules Point of load power supplies • • • • • • • • • • • • • • • • • • Description The SC401B is a stand-alone synchronous EcoSpeedTM buck power supply which incorporates Semtech’s advanced patented adaptive on-time control architecture. This pro- vides excellent light-load efficiency and fast transient response. It features integrated power MOSFETs, a boot- strap switch, and a programmable LDO in a 5x5mm package. The device is highly efficient and uses minimal PCB area. The SC401B has the same package and pin con- figuration as the entire SC40xB series for compatibility. The SC401B supports using standard capacitor types such as electrolytic or specialty polymer, in addition to ceramic, at switching frequencies up to 1MHz. The programmable frequency, synchronous operation, and selectable power save provide high efficiency operation over a wide load range. Additional features include a programmable soft-start, programmable cycle-by-cycle over-current limit protec- tion, under-voltage and over-voltage protection, soft shutdown, and selectable power save. The device also provides separate enable inputs for the PWM controller and LDO as well as a power good output for the PWM controller. The wide input range and programmable frequency make the device extremely flexible and easy to use in a broad range of applications. Rev. 2.1 POWER MANAGEMENT RTON SC401B FB VOUT VDD VIN SS BST PGND LX PGOOD ILIM LXS EN/PSV ENL LXBST RILIM CBST ENABLE/PSAVE ENABLE LDO VEXT/LDO AGND + RFB1 RFB2 VOUT COUT L1 CIN VIN PGOOD TON 1µF CSOFT 10Ω Typical Application Circuit |
Аналогичный номер детали - SC401B |
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Аналогичное описание - SC401B |
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