IS-1845ASRH
High Speed, Current Mode PWM
Not Recommended for New Designs.
Recommended Replacement Part ISL7884XARH.
Typical Diagram
Key Features
- Electrically Screened to DSCC SMD # 5962-01509
- QML Qualified per MIL-PRF-38535 Requirements
- Radiation Environment
- Total Dose 300 krad(SI) (Max)
- SEL Immune Dielectrically Isolated
- SEU Immune 35MeV/mg/cm2
- SEU Cross-Section at 89MeV/mg/cm2 5 x 10-6cm2
- Low Start-up Current 100µA (Typ)
- Fast Propagation Delay 80ns (Typ)
- Supply Voltage Range 12V to 20V
- High Output Drive 1A (Peak, Typ)
- Under Voltage Lockout 8.8V Start (Typ), 8.2V Stop (Typ)
Description
The IS-1845ASRH is designed to be used in switching power supplies operating in current-mode. The rising edge of the on-chip oscillator turns on the output. Turn-off is controlled by the current sense comparator and occurs when the sensed current reaches a peak controlled by the error amplifier.
Constructed with Intersil's Rad Hard Silicon Gate (RSG) dielectrically isolated BiCMOS process, these devices are immune to single event latch-up and have been specifically designed to provide a high level of immunity to single event transients. All specified parameters are guaranteed and tested for 300krad(Si) total dose performance.
Detailed Electrical Specifications for these devices are contained in SMD 5962-01509. A "hot-link" is provided on our website for downloading the SMD.
Applications
- Current-Mode Switching Power Supplies
- Control of High Current FET Drivers
- Motor Speed and Direction Control
