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The device is an off-line converter with an 800 V avalanche ruggedness power section, a PWM controller, user defined overcurrent limit, protection against feedback network disconnection, hysteretic thermal protection, soft start up and safe auto restart after any fault condition.
Advance frequency jittering reduces EMI filter cost. Burst mode operation and the devices very low consumption both help to meet the standard set by energy saving regulations.
Key Features
- 800 V avalanche rugged power section
- PWM operation with frequency jittering for low EMI
- Operating frequency:
- 60 kHz for L type
- 115 kHz for H type
- Standby power < 50 mW at 265 VAC
- Limiting current with adjustable set point
- On-board soft-start
- Safe auto-restart after a fault condition
- Hysteretic thermal shutdown
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Evaluation Tools
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Picture Part number Manufacturer Description 
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5 W, 2-output wide-range buck converter based on the VIPER26LD
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Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|---|
| VIPER26HD | Active | SO-16 | Industrial | Ecopack2 | |
| VIPER26HDTR | Active | SO-16 | Industrial | Ecopack2 | |
| VIPER26HN | Active | PDIP 7 | Industrial | Ecopack2 | |
| VIPER26LD | Active | SO-16 | Industrial | Ecopack2 | |
| VIPER26LDTR | Active | SO-16 | Industrial | Ecopack2 | |
| VIPER26LN | Active | PDIP 7 | Industrial | Ecopack2 |
VIPER26HD
Package:
SO-16Material Declaration**:
VIPER26LD
Package:
SO-16Material Declaration**:
(**) 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.
eDesignSuite
Sample & Buy
| Part Number | Order from Distributors | Order from ST | Package | Packing Type | Marketing Status | RDS(on) (Ω) (max) | Transistor Breakdown Voltage (V) (min) | Drain Current (A) (nom) | ECCN (US) | Country of Origin | Budgetary Price (US$)*/Qty | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| VIPER26LN | 7 distributors | Get sample | PDIP 7 | Tube | Active | 7 | 800 | 0.7 | EAR99 | CHINA | 0.415 / 1k | |
| VIPER26LD | 5 distributors | Buy now | SO-16 | Tube | Active | 7 | 800 | 0.7 | EAR99 | THAILAND | 0.394 / 1k | |
| VIPER26HN | 4 distributors | Get sample | PDIP 7 | Tube | Active | 7 | 800 | 0.7 | EAR99 | CHINA | 0.415 / 1k | |
| VIPER26LDTR | 5 distributors | Get sample | SO-16 | Tape And Reel | Active | 7 | 800 | 0.7 | EAR99 | THAILAND | 0.394 / 1k | |
| VIPER26HD | 6 distributors | Buy now | SO-16 | Tube | Active | 7 | 800 | 0.7 | EAR99 | THAILAND | 0.394 / 1k | |
| VIPER26HDTR | 5 distributors | Get sample | SO-16 | Tape And Reel | Active | 7 | 800 | 0.7 | EAR99 | THAILAND | 0.394 / 1k |
(*) 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
