概览
描述
The ISL78840ASEH, ISL78841ASEH, ISL78843ASEH, ISL78845ASEH, ISL78840ASRH, ISL78841ASRH, ISL78843ASRH, ISL78845ASRH are high-performance, radiation hardened drop-in replacements 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.
特性
- 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 environment:
- High dose rate (50 - 300rad(Si)/s): 100krad(Si)
- Low dose rate (0.01rad(Si)/s): 100krad(Si)*
* Product capability established by initial characterization. The "EH" version is acceptance tested on a wafer-by-wafer basis to 50krad(Si) at low dose rate. (Applies to ISL7884xASEH only)
产品对比
应用
- Current mode switching power supplies
- Isolated buck and flyback regulators
- Boost regulators
- Direction and speed control in motors
- Control of high current FET drivers
设计和开发
软件与工具
软件与工具
| Software title
|
Software type
|
公司
|
|---|---|---|
| iSim:PE 离线模拟工具 iSim Personal Edition（iSim:PE ）可加快设计周期并降低项目早期风险，确定可用于当前和下一代设计的部件。
|
Simulator | 瑞萨电子 |
1 item
|
||
模型
ECAD 模块
点击产品选项表中的产品，查找 SamacSys 中的原理图符号、PCB 足迹和 3D CAD 模型。点击产品选项表中的产品，查找 SamacSys 中的原理图符号、PCB 足迹和 3D CAD 模型。
产品选项
当前筛选条件