Overview
Description
Support is limited to customers who have already adopted these products.
The ISL70003SEH is a radiation and SEE hardened synchronous buck regulator capable of operating over an input voltage range of 3. 0V to 13. 2V. With integrated MOSFETs, this highly efficient single chip power solution provides a tightly regulated output voltage that is externally adjustable from 0. 6V to ~90% of the input voltage. Continuous output load current capability is 6A for TJ ≤ +125°C and 3A for TJ ≤ +150°C. The ISL70003SEH uses voltage mode control architecture with feed-forward and switches at a selectable frequency of 500kHz or 300kHz. Loop compensation is externally adjustable to allow for an optimum balance between stability and output dynamic performance. The internal synchronous power switches are optimized for high efficiency and excellent thermal performance. The chip features two logic-level disable inputs that can be used to inhibit pulses on the phase (LXx) pins in order to maximize efficiency based on the load current. The ISL70003SEH also supports DDR applications and contains a buffer amplifier for generating the VREF voltage. High integration, best in class radiation performance and a feature-filled design make the ISL70003SEH an ideal choice to power many of today's small form-factor applications.
Features
- Acceptance tested to 50krad(Si) (LDR) wafer-by-wafer
- ±1% reference voltage over line, temperature, and radiation
- Integrated MOSFETs 31mΩ PFET/21mΩ NFET
- 95% peak efficiency
- Externally adjustable loop compensation
- Supports DDR applications (VTT tracks VDDQ/2)
- Buffer amplifier for generating VREF voltage
- 3A current sinking capability
- Grounded lid eliminates charge build up
- IMON pin for output current monitoring
- Adjustable analog soft-start
- Diode emulation for increased efficiency at light loads
- 500kHz or 300kHz operating frequency synch wording
- Monotonic start-up into prebiased load
- Full military temperature range operation
- TA = -55°C to +125°C
- TJ = -55°C to +150°C
- Radiation tolerance
- High dose rate (50-300rad(Si)/s): 100krad(Si)
- Low dose rate (0.01rad(Si)/s): 100krad(Si)*
* Limit established by characterization. - SEE hardness
- SEB and SEL LETTH: 86.4MeV•cm2/mg
- SET at LET 86.4MeV•cm2/mg: < ±3% ΔVOUT
- SEFI LETTH: 60MeV•cm2/mg
- Electrically screened to DLA SMD 5962-14203
Comparison
Applications
Design & Development
Software & Tools
Software & Tools
| Software title
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Software type
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Company
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|---|---|---|
| iSim:PE Offline Simulation Tool iSim Personal Edition (iSim:PE) speeds the design cycle and reduces risk early in any project, identifying parts that can be used in current as well as next-generation designs.
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Simulator | Renesas |
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Boards & Kits
Evaluation
ISL70003ASEHEV1Z
Active
Rad Hard 9A Buck Regulator Evaluation Board
The ISL70003ASEHEV1Z evaluation board is designed to evaluate the performance of the ISL70003ASEH, a TID and SEE hardened 9A synchronous buck regulator IC with integrated MOSFETs intended for space applications.
The ISL70003ASEHEV1Z board accepts a nominal input voltage of 12V and provides a...
Recommended Documents:
Evaluation
ISL70003ASEHEV2Z
Active
Rad Hard 9A Buck Regulator Small Form Factor Evaluation Board
The ISL70003ASEHEV2Z small form factor evaluation board is used to evaluate the performance of the ISL70003ASEH, a TID and SEE hardened 9A synchronous buck regulator IC with integrated MOSFETs intended for space applications. The board is designed to demonstrate the performance of the...
Recommended Documents:
Reference Designs
ISLRTG4DEMO1Z
Active
Renesas Radiation Hardened Power Solution for RTG4 FPGA
Over the last decade, satellites and spacecraft have seen an exponential increase in the need for onboard data processing and storage demands. Additionally, major satellite manufacturers have recently announced their latest satellites to be modular, fully digital, and capable of in-orbit...
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on the CAD Model links in the Product Options table. If a symbol or model isn't available, it can be requested directly from SamacSys.
Product Options
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