Product overview
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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All features
- 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 Symbols, Footprints and 3D Models
STMicroelectronics - ST1843
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 :
Symbols
Footprints
3D models
所有资源
| Resource title | 版本 | Latest update | Actions | Details | 下載 |
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CAD Symbol & Footprint models (1)
| Resource title | 版本 | Latest update | Actions | Options | ||
|---|---|---|---|---|---|---|
| ZIP | 1.0 | 08 Oct 2020 | 08 Oct 2020 |
Quality and Reliability
| Part Number | Marketing Status | Package | Grade | 符合RoHS级别 | Longevity Commitment | Longevity Starting Date | Material Declaration** |
|---|---|---|---|---|---|---|---|
| ST1843FKG | Active 产品已量产 | Flat-8 | Industrial | N/A | - | - | |
| ST1843FKT | Active 产品已量产 | Flat-8 | Industrial | N/A | - | - | |
| ST1843K1 | Active 产品已量产 | Flat-8 | Industrial | 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。
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Sample & Buy
| Part Number | 供货状态 | Budgetary Price (US$)*/Qty | 从ST订购 | Order from distributors | Package | Packing Type | 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 | |
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| ST1843K1 | | | distributors 无法联系到经销商，请联系我们的销售办事处 |
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| ST1843FKG | | | distributors 无法联系到经销商，请联系我们的销售办事处 |
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| ST1843FKT | | | distributors 无法联系到经销商，请联系我们的销售办事处 |
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ST1843K1 Active
ST1843FKG Active
ST1843FKT Active