产品概述
描述
The ST1843 and ST1845 ICs are rad-hard current mode PWM controllers providing an industry standard solution for the implementation of off-line or DC to DC fixed-frequency current mode control schemes with a minimal external part count.
Its radiation hardness, hermetic packaging and its ESCC qualification make it an ideal choice for aerospace and other harsh environments.
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所有功能
- Oscillator frequency guaranteed at 250 kHz
- Trimmed oscillator for precise frequency control
- Current mode operation to 500 kHz automatic feed forward compensation
- Latching PWM for cycle-by-cycle current limiting
- Internally trimmed reference with undervoltage lockout
- High current totem pole output
- Undervoltage lockout with hysteresis
- Low start-up (<0.5 mA) and operating current
- Ceramic hermetic package Flat-8 metallic lid floating
- ST1843 50 krad (Si)
- ST1845 100 krad (Si)
- SEL free @ 120 MeV/cm2/mg at 125 °C
- ESCC qualified as 9108/020 and 9108/021
特别推荐
EDA符号、封装和3D模型
意法半导体 - ST1845
Speed up your design by downloading all the EDA symbols, footprints and 3D models for your application. You have access to a large number of CAD formats to fit with your design toolchain.
Please select one model supplier :
符号
封装
3D模型
所有资源
| 资源标题 | 版本 | 更新时间 |
|---|
CAD Symbol & Footprint models (1)
| 资源标题 | 版本 | 更新时间 | ||
|---|---|---|---|---|
| ZIP | 1.0 | 08 Oct 2020 | 08 Oct 2020 |
质量与可靠性
| 产品型号 | Marketing Status | 包 | 等级规格 | 符合RoHS级别 | Longevity Commitment | Longevity Starting Date | 材料声明** |
|---|---|---|---|---|---|---|---|
| ST1845K1 | 批量生产 | Flat-8 | 工业 | N/A | - | - | |
| ST1845RKG | 批量生产 | Flat-8 | 工业 | N/A | - | - | |
| ST1845RKT | 批量生产 | Flat-8 | 工业 | N/A | - | - | |
ST1845K1
Package:
Flat-8Material Declaration**:
ST1845RKG
Package:
Flat-8Material Declaration**:
ST1845RKT
Package:
Flat-8Material Declaration**:
(**) st.com上提供的材料声明表单可能是基于包装系列中最常用的封装的通用文档。因此，它们可能不是100%适用于特定的设备。有关特定设备的信息，请联系 销售支持。
样片和购买
| 产品型号 | 供货状态 | Budgetary Price (US$)*/Qty | 从ST订购 | Order from distributors | 包 | 包装类型 | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Operating Temperature (°C) (min) | Operating Temperature (°C) (max) | Package: Product Marking | SMD PIN/Detailed Spec | Quality Level | Lead Finish | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ST1845K1 | | | distributors 无法联系到经销商，请联系我们的销售办事处 |
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| ST1845RKG | | | distributors 无法联系到经销商，请联系我们的销售办事处 |
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| ST1845RKT | | | distributors 无法联系到经销商，请联系我们的销售办事处 |
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ST1845K1 批量生产
ST1845RKG 批量生产
ST1845RKT 批量生产