特長
- DLA SMD 5962-12202
- Maximum output current (Single Phase):
- 22A with external Schottky (TJ ≤ 125 °C, PVIN ≤ 5.5V)
- 18A (TJ ≤ 125 °C, PVIN ≤ 5.5V)
- 14A (TJ ≤ 125 °C, PVIN ≤ 6.2V)
- 12A (TJ ≤ 150 °C, PVIN ≤ 6.2V)
- Maximum output current (Dual Phase)
- 38A (27% worst case current sharing)
- 1MHz or 500kHz switching frequency
- 3V to 6.2V supply voltage range
- ±1% reference voltage (line, load, temperature, and rad)
- Redundancy/Junction isolation: Exceptional SET performance
- Excellent transient response
- High efficiency >90%
- Two ISL73002SEH synchronization, inverted-phase
- Comparator input for enable and power-good
- Input undervoltage, output undervoltage, and adjustable output overcurrent protection
- QML qualified per MIL-PRF-38535
- Full military temperature range operation (-55 °C to +125 °C)
- Radiation environment
- LDR (0.01rad(Si)/s): 50krad(Si)
- SEE hardness
- SEL and SEB LETTH 86.4MeV/mg/cm2
- SEFI LETTH 43MeV/mg/cm2
- SET LETTH 86.4MeV/mg/cm2
説明
The ISL73002SEH is a radiation hardened and SEE hardened high-efficiency monolithic, synchronous buck regulator with integrated MOSFETs. This single-chip power solution operates over an input voltage range of 3V to 5.5V and provides a tightly regulated output voltage that is externally adjustable from 0.8V to ~85% of the input voltage. Output load current capability is primarily determined by PVIN voltage with up to 22A for a single IC at PVIN ≤ 5.5V for TJ ≤ +125 °C. Two ISL73002SEH devices, configured to current share, can provide up to 38A of total output current at PVIN ≤ 5.5V for TJ ≤ +125 °C assuming ±27% worst-case current share accuracy. The ISL73002SEH uses peak current-mode control with integrated error amp compensation and pin-selectable slope compensation. The switching frequency is also pin selectable to either 1MHz or 500kHz. Two devices can be synchronized 180° out-of-phase to reduce input RMS ripple current. High integration makes the ISL73002SEH an ideal choice to power small form factor applications. Two devices can be synchronized to provide a complete power solution for large-scale digital ICs, like field-programmable gate arrays (FPGAs) that require separate core and I/O voltages.
パラメータ
| 属性 | 値 |
|---|---|
| Rating | Space |
| Control Mode | Peak Current Mode |
| IOUT Rail 1 (max) (A) | 22 |
| No-Load Operating Current | 70 |
| Outputs (#) | 1 |
| Quiescent Current | 2.5mA |
| Supply Voltage Rail 1 (min) (V) | 3 |
| Supply Voltage Rail 1 (max) (V) | 6.2 |
| Switching Frequency (min) (kHz) | 500, 1000 |
| Switching Frequency (max) (kHz) | 500, 1000 |
| VOUT Rail 1 (min) (V) | 0.6 |
| VOUT Rail 1 (max) (V) | 4.675 |
| Temp. Range (°C) | -40 to +85°C, -40 to +105°C, -40 to +125°C, -55 to +125°C |
| TID HDR (krad(Si)) | 100 |
| TID LDR (krad(Si)) | 100 |
| DSEE (MeV·cm2/mg) | 86, 86.4 |
| Flow | RH Hermetic |
| Qualification Level | Class V, EM |
| Die Sale Availability? | Yes |
| PROTO Availability? | Yes |
アプリケーション
- FPGA, CPLD, DSP, CPU core, and I/O voltages
- Low-voltage, high-density distributed power systems
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