Product overview
Description
The L4983 is a peak current-mode PFC controller for boost converter with a proprietary multiplier “emulator” which in addition to the innovative THD optimizers guarantee very low Total Harmonic Distortion (THD) performance in all operating conditions. The device comes in a pin SO package and offers a high performance/low-component count solution for CCM-operated boost PFC pre-regulators in EN61000-3-2 and JEIDA-MITI compliant applications, in a power range that spans from few hundred W to some kW.
The device, thanks to a proprietary off-time modulator, operates in quasi-fixed frequency in all operating conditions. Two options are available, 65 kHz for A and 130 kHz for B.
The device features low consumption and disable functions allowing usage in applications supposed to comply even with the latest energy saving requirements issued by Energy Star, the Department of Energy (DoE) in the United States, the European Code of Conduct, the European Union’s Ecodesign Directive, and other guidelines.
In addition to an overvoltage protection able to keep the output voltage under control during transient conditions, the IC is provided also with a protection against feedback loop failures or erroneous settings and boost inductor saturation. Soft-start limits the peak current.
The totem-pole output stage, capable of 0.7 A source and 1.5 A sink current, is suitable for big MOSFET or IGBT drives.
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All features
- Peak current mode CCM-operated
- Proprietary multiplier “emulator” with minimum THD of line current in all operating conditions (CCM and DCM)
- Extremely few external components
- Protections: feedback loop failure, OVP, OCP, inductor saturation
- Inductor current sense
- Disable and low consumption function
- In-rush current monitoring
- Soft-start for smooth startup
- 1.2% (@ Tj = 25 °C) internal reference voltage
- 65 kHz (A version) and 130 kHz (B version) switching frequency
- SO8 package
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STMicroelectronics - L4983
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Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Longevity Commitment | Longevity Starting Date | Material Declaration** |
|---|---|---|---|---|---|---|---|
| L4983A | Active Product is in volume production. | SO-8 | Industrial | Ecopack3 | - | - | |
| L4983ATR | Active Product is in volume production. | SO-8 | Industrial | Ecopack3 | - | - | |
| L4983B | Active Product is in volume production. | SO-8 | Industrial | Ecopack3 | - | - | |
| L4983BTR | Active Product is in volume production. | SO-8 | Industrial | Ecopack3 | - | - | |
L4983A
Package:
SO-8Material Declaration**:
L4983ATR
Package:
SO-8Material Declaration**:
L4983B
Package:
SO-8Material Declaration**:
L4983BTR
Package:
SO-8Material 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.
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Sample & Buy
| Part Number | Marketing Status | Budgetary Price (US$)*/Qty | Order from ST | Order from distributors | Package | Packing Type | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Operating Temperature (°C) (min) | Operating Temperature (°C) (max) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| L4983A | | | distributors No availability of distributors reported, please contact our sales office | ||||||||||
| L4983ATR | | | distributors No availability of distributors reported, please contact our sales office | ||||||||||
| L4983B | | | distributors No availability of distributors reported, please contact our sales office | ||||||||||
| L4983BTR | | | distributors No availability of distributors reported, please contact our sales office |
L4983A Active
L4983ATR Active
L4983B Active
L4983BTR Active
(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors