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.-
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
EDA符号、封装和3D模型
STMicroelectronics - ST1843
为您的应用下载所有EDA符号、封装和3D模型，加快您的设计速度。您可以从大量CAD格式中进行选择，以匹配您的设计工具链。
符号
封装
3D模型
全部资源
| Resource title | 版本 | Latest update |
|---|
CAD Symbol & Footprint models (1)
| Resource title | 版本 | Latest update | ||
|---|---|---|---|---|
| ZIP | 1.0 | 08 Oct 2020 | 08 Oct 2020 |
质量与可靠性
| 产品型号 | Marketing Status | 封装 | 等级规格 | 符合RoHS级别 | 材料声明** |
|---|---|---|---|---|---|
| ST1843FKG | 批量生产 | Flat-8 | 工业 | N/A | |
| ST1843FKT | 批量生产 | Flat-8 | 工业 | N/A | |
| ST1843K1 | 批量生产 | Flat-8 | 工业 | N/A | |
ST1843FKG
Package:
Flat-8Material Declaration**:
ST1843FKT
Package:
Flat-8Material Declaration**:
ST1843K1
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
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| 产品型号 | Order from distributors | 从ST订购 | 供货状态 | ECCN (US) | ECCN (EU) | 包装类型 | 封装 | 温度（ºC） | SMD PIN/Detailed Spec | Quality Level | Lead Finish | Package: Product Marking | Country of Origin | Budgetary Price (US$)*/Qty | Quality Level | Lead Finish | Package: Product Marking | Country of Origin | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 最小值 | 最大值 | |||||||||||||||||||
| ST1843K1 | 无法联系到经销商，请联系我们的销售办事处 | 批量生产 | EAR99 | NEC | Carrier Tape | Flat-8 | - | - | - | ESCC Flight | Gold | ST1843K1 | FRANCE | | ESCC Flight | Gold | ST1843K1 | FRANCE | ||
| ST1843FKG | 无法联系到经销商，请联系我们的销售办事处 | 批量生产 | EAR99 | NEC | Carrier Tape | Flat-8 | - | - | 9108/020/01F | ESCC Flight | Gold | 9108/020/01F | FRANCE | | ESCC Flight | Gold | 9108/020/01F | FRANCE | ||
| ST1843FKT | 无法联系到经销商，请联系我们的销售办事处 | 批量生产 | EAR99 | NEC | Carrier Tape | Flat-8 | - | - | 9108/020/02F | ESCC Flight | Solder dip | 9108/020/02F | FRANCE | | ESCC Flight | Solder dip | 9108/020/02F | FRANCE | ||
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