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| PT5069资料 | |
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PT5069 PDF Download |
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File Size : 116 KB
Manufacturer:VNOR Description:The MAX1858 dual, synchronized, step-down controller generates two outputs from input supplies ranging from 4.75V to 23V. Each output is adjustable from sub-1V to 18V and supports loads of 10A or higher. Input voltage ripple and total RMS input ripple current are reduced by synchronized 180 out-of-phase operation. The switching frequency is adjustable from 100kHz to 600kHz with an external resistor. Alternatively, the con- troller can be synchronized to an external clock gener- ated to another MAX1858 or a system clock. One MAX1858 can be set to generate an in-phase, or 90 out-of-phase, clock signal for synchronization with addi- tional controllers. This allows two controllers to operate either as an interleaved two- or four-phase system with each output shifted by 90. The device also features first-on/last-off power sequencing for compatibility with DSPs, ASICs, and FPGAs, as well as soft-start and soft-stop to ensure reliable and repeatable power sequencing. The MAX1858 eliminates the need for current-sense resistors by utilizing the low-side MOSFETs on-resistance as a current-sense element. This protects the DC-DC components from damage during output-overload condi- tions or when output short-circuit faults without requiring a current-sense resistor. Adjustable foldback current limit reduces power dissipation during short-circuit condition. A power-on reset output signals the system when both outputs reach regulation. The MAX1858 is available in a 24-pin QSOP package. An evaluation kit is available to speed designs. |
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| 1PCS | 100PCS | 1K | 10K | ||
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型 号：PT5069 厂 家：VNOR 封 装：DIP16 批 号：1998 数 量：2406 说 明：原装正品，长期稳定供应 |
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运 费： 所在地： 新旧程度： |
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| 联系人：林小姐 |
| 电 话：086-755-23815997 |
| 手 机：13632589437 |
| QQ：1097182423,2851921558 |
| MSN： |
| 传 真：0755-23815984 |
| EMail：joylin@hongbotong.com |
| 公司地址： 深圳市福田区深南中路3006号佳和大厦B座2007室 |
