Overview
Description
The ISL738840ASEH is a high-performance, radiation hardened drop-in replacement for the popular 28C4x and 18C4x PWM controllers suitable for a wide range of power conversion applications including boost, flyback and isolated output configurations. Fast signal propagation and output switching characteristics make these ideal products for existing and new designs. Features include up to 13.2V operation, low operating current, 90µA typical start-up current, adjustable operating frequency to 1MHz, and high peak current drive capability with 50ns rise and fall times.
Features
- Electrically screened to DLA SMD #5962-07249
- QML qualified per MIL-PRF-38535 requirements
- 1A MOSFET gate driver
- 90µA typical start-up current, 125µA maximum
- 35ns propagation delay current sense to output
- Fast transient response with peak current-mode control
- 9V to 13.2V operation
- Adjustable switching frequency to 1MHz
- 50ns rise and fall times with 1nF output load
- Trimmed timing capacitor discharge current for accurate dead time/maximum duty cycle control
- 1.5MHz bandwidth error amplifier
- Tight tolerance voltage reference over line, load, and temperature
- ±3% current limit threshold
- Pb-free available (RoHS compliant)
- Radiation acceptance testing - ISL73884xASEH
- LDR (0.01rad(Si)/s): 50krad(Si)
Comparison
Applications
Applications
- Current mode switching power supplies
- Isolated buck and flyback regulators
- Boost regulators
- Direction and speed control in motors
- Control of high current FET drivers
Documentation
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| Type | Title | Date |
| Datasheet | PDF 948 KB | |
| Brochure | PDF 5.02 MB | |
| Application Note | PDF 414 KB | |
| Report | PDF 322 KB | |
| Other | ||
| Report | PDF 370 KB | |
| Report | PDF 1.83 MB | |
| White Paper | PDF 533 KB | |
| Application Note | PDF 338 KB | |
9 items
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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 |
1 item
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Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.
| CFP | Tray | 25 | 5962L0724909VXC | Not Applicable | ||
| SBDIP | Tray | 25 | 5962L0724909VPC | Not Applicable | ||
| DIE | 100 | 5962L0724909V9A | ||||
| SBDIP | Tray | 1 | Not Applicable | Get Samples, | ||
| CFP | Tray | 1 | Not Applicable | Get Samples, | ||
| DIE | 5 |
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