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Overview
| Topology | Boost Converter |
| Input voltage | 2.5-42 V |
| Output 1 | 35.5 V / 2 A |
Description
Demonstration circuit DC2342A is a 60V synchronous boost LED controller featuring the LT®3762. It drives a single string of LEDs at 2A up to 32V when VIN is between 7V and 28V. It runs down to 4VIN with reduced ILED and can withstand VIN transients as high as 30V. DC2342A runs at approximately 300kHz switching frequency. Spread spectrum frequency modulation (SSFM) can be turned on with a simple jumper, reducing EMI. DC2342A is designed for high power step-up LED controller applica-tions that require excellent efficiency across the VIN range. This demonstration circuit is protected against both open and short LED conditions, each having its own flag
Features
- 3000:1 External PWM Dimming
- 250:1 Internal PWM Dimming
- Wide VIN Operating Range: 2.5V to 38.5V
- Synchronous Boost Output Voltage up to 60V
- Spread-Spectrum Frequency Modulation for Lower EMI
- PMOS Switch Driver for PWM and Output Disconnect
- Constant Current (±3.5%) Regulation
- Constant Voltage (±2%) Regulation
- Rail-to-Rail LED Current Sense: 0V to 60V
- Programmable VIN Undervoltage Lockout
- Analog Dimming via Two Control Pins
- 100kHz to 1MHz Operation
- Programmable Open LED Protection with OPENLED Flag
- Short-Circuit Protection and SHORTLED Flag
- Drives LEDs in Boost, SEPIC, Buck Mode, or BuckBoost Mode Configurations
- 28 Lead TSSOP and QFN (4mm × 5mm) Exposed Pad Packages
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | L(µH) | IR(A) | ISAT(A) | RDC max.(mΩ) | Material | fres(MHz) | Type | Version | IRP,40K(A) | ISAT,10%(A) | ISAT,30%(A) | RDC(mΩ) | Qty. | Pins | Mount | L(mm) | H(mm) | Working Voltage(V (AC)) | Operating Temperature | SamplesAvailability & Sample | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | SPECWE-HCI SMT Flat Wire High Current Inductor, 7.6 µH, – | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCI SMT Flat Wire High Current Inductor | Inductance7.6 µH | – | – | DC Resistance4 mΩ | MaterialMnZn | Self Resonant Frequency20 MHz | – | VersionSMT | Performance Rated Current22.8 A | Saturation Current @ 10%19 A | Saturation Current @ 30%22 A | DC Resistance3.75 mΩ | Packaging Unit150 | Pins2 | MountSMT | Length18.3 mm | Height8.9 mm | – | Operating Temperature -40 °C up to +125 °C | –Check availability | |||
| SPECWE-HCI SMT Flat Wire High Current Inductor, 10 µH, – | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCI SMT Flat Wire High Current Inductor | Inductance10 µH | – | – | DC Resistance7.452 mΩ | MaterialWE-PERM 2 | Self Resonant Frequency14 MHz | – | VersionSMT | Performance Rated Current16.5 A | Saturation Current @ 10%10 A | Saturation Current @ 30%21.5 A | DC Resistance6.9 mΩ | Packaging Unit150 | Pins2 | MountSMT | Length18.3 mm | Height8.9 mm | – | Operating Temperature -40 °C up to +150 °C | –Check availability | |||
 | SPECWE-SPC SMT Power Inductor, 47 µH, 0.66 A | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-SPC SMT Power Inductor | Inductance47 µH | Rated Current0.66 A | Saturation Current1 A | DC Resistance608 mΩ | – | Self Resonant Frequency10 MHz | – | VersionSMT | – | – | – | – | Packaging Unit500 | Pins2 | MountSMT | Length4.8 mm | Height2.8 mm | – | Operating Temperature -40 °C up to +125 °C | –Check availability | |||
 | SPECWR-PHD Pin Header, –, 2 A | Simulation– | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Pin Header | – | Rated Current2 A | – | – | – | – | TypeStraight | – | – | – | – | – | Packaging Unit1000 | Pins4 | MountTHT | Length4 mm | – | Working Voltage200 V (AC) | Operating Temperature -40 °C up to +105 °C | –Check availability |
Availability Forecast
WE item number Packaging unitsLead time
––– weeks
| Expected Availability | Opening inventory | Quantity |
|---|---|---|
| Current Availability | – | – |
There is no forecast for this quantity request.
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