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The ALTAIR04-900 is a high voltage all-primary-sensing switcher, operating directly from the rectified mains with minimum external parts. It combines a high-performance low voltage PWM controller chip and a 900 V avalanche-rugged power section in the same package.
Key Features
- Optoless primary side constant voltage operations
- Adjustable and mains-independent maximum output current for safe operations during overload/short-circuit conditions
- 900 V avalanche-rugged internal power section
- Quasi-resonant valley switching operation
- Low standby consumption
- Overcurrent protection against transformer saturation and secondary diode short-circuit
- SO16N package
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Sample & Buy
| Part Number | Package | Packing Type | Marketing Status | RDS(on) (Ω) (max) | Transistor Breakdown Voltage (V) (min) | Drain Current (A) (nom) | ECCN (US) | Country of Origin | More info | Budgetary Price (US$)*/Qty | Order from ST | Order from Distributors |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ALTAIR04-900 | SO-16 | Tube | Active | - | - | 0.7 | EAR99 | CHINA | 0.408 / 1k | Buy now | Check Availability | |
| ALTAIR04-900TR | SO-16 | Tape And Reel | Active | - | - | 0.7 | EAR99 | CHINA | 0.408 / 1k | Get sample | Check Availability |
(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors
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Evaluation Tools
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Picture Part number Manufacturer Description 
STEVAL-ISA133V1 -- Double output SMPS for power line applications using the ALTAIR04-900 primary controller Part NumberDouble output SMPS for power line applications using the ALTAIR04-900 primary controller
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| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|---|
| ALTAIR04-900 | Active | SO-16 | Industrial | Ecopack2 | |
| ALTAIR04-900TR | Active | SO-16 | Industrial | Ecopack2 |
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
