特長
- Wide operating voltage range, 3V to 13.2V
- Single resistor sets the rising and falling delay
- Power off POLs in reverse order or simultaneously
- Precision voltage monitoring
- 600mV ±1.5% threshold voltage over temperature and radiation
- Full military temperature range operation
- TA = -55°C to +125°C
- TJ = -55°C to +150°C
- Radiation hardness
- High dose rate (HDR) (50-300rad(Si)/s): 100krad(Si)
- Low dose rate (LDR) (0.01rad(Si)/s): 75krad(Si)
- SEE hardness (Review the SEE report for details)
- No SEB/SEL LETTH, VDD = 14.7V: 86MeV•cm2/mg
- SET, SEFI free at LET 20MeV•cm2/mg
- Electrically screened to DLA SMD 5962-17225
説明
The ISL70321SEH is a radiation hardened and SEE-mitigated power supply sequencer designed to drive Point-of-Load (POL) regulators with enable pins. Up to four power supplies can be fully sequenced by a single device, or multiple devices can be easily cascaded to sequence an unlimited number of power supplies for dense RF applications. This power supply sequencer requires only two feedback resistors per power supply and a single resistor to set the rising and falling delay. The device features precision input comparators with an input threshold voltage of 600mV ±1.5% for the highest possible accuracy when monitoring the power supply voltages. The device is offered in an 18 Ld 10mm x 12mm CDFP package or die form and is fully specified across the military ambient temperature range of -55°C to +125°C. With minimal external component count, precision voltage monitoring, and SET mitigation, the ISL70321SEH is an ideal choice to control many of today’s highly dense power systems in high-reliability applications.
パラメータ
| 属性 | 値 |
|---|---|
| Rating | Space |
| Cascadable? | Yes |
| Number of Controlled Supplies (#) | 4 |
| Output Type | Enable Open Drain |
| PGOOD Timer | Yes |
| Programmable Delay | Yes |
| Supply Voltage (min) (V) | 3 - 3 |
| Supply Voltage (max) (V) | 13.2 - 13.2 |
| Temp. Range (°C) | -55 to +125°C |
| TID HDR (krad(Si)) | 100 |
| TID LDR (krad(Si)) | 75 |
| DSEE (MeV·cm2/mg) | 86 |
| Flow | RH Hermetic |
| Qualification Level | Class V, EM |
| Die Sale Availability? | Yes |
| PROTO Availability? | Yes |
アプリケーション・ブロック図
 | 耐放射線性 Versal 用パワー ツリー AMD Versalを使用した衛星アプリケーション向けの耐放射線性電源です。 |
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