Commandes de plus de
$5000ON UC3845BVD1G
Boost, Flyback Regulator Positive, Isolation Capable Output Step-Up, Step-Up/Step-Down DC-DC Controller IC 8-SOIC
Marques: ON Semiconductor, LLC
Pièce Fabricant #: UC3845BVD1G
Fiche de données: UC3845BVD1G Datasheet (PDF)
Colis/Caisse: SOIC-8
type de produit: DC DC Switching Controllers
Statut RoHS:
État des stocks: 2 303 pièces, nouveau original
Warranty: 1 Year Ovaga Warranty - Find Out More
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UC3845BVD1G Description générale
The UC3844B, UC3845B series are high performance fixed frequency current mode controllers. They are specifically designed for Off-Line and dc-to-dc converter applications offering the designer a cost-effective solution with minimal external components. These integrated circuits feature an oscillator, a temperature compensated reference, high gain error amplifier, current sensing comparator, and a high current totem pole output ideally suited for driving a power MOSFET.
Also included are protective features consisting of input and reference undervoltage lockouts each with hysteresis, cycle-by-cycle current limiting, a latch for single pulse metering, and a flip-flop which blanks the output off every other oscillator cycle, allowing output deadtimes to be programmed from 50% to 70%.
These devices are available in an 8-pin dual-in-line and surface mount (SO-8) plastic package as well as the 14-pin plastic surface mount (SO-14). The SO-14 package has separate power and ground pins for the totem pole output stage.
The UCX844B has UVLO thresholds of 16 V (on) and 10 V (off), ideally suited for off-line converters. The UCX845B is tailored for lower voltage applications having UVLO thresholds of 8.5 V (on) and 7.6 V (off).
Caractéristiques
- Trimmed Oscillator for Precise Frequency Control
- Oscillator Frequency Guaranteed at 250 kHz
- Current Mode Operation to 500 kHz Output Switching Frequency
- Output Deadtime Adjustable from 50% to 70%
- 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 Startup and Operating Current
- Pb-Free Packages are Available
Application
ONSEMICaractéristiques
Paramètre | Valeur | Paramètre | Valeur |
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Manufacturer: | ON Semiconductor | Product Category: | Switching Controllers |
RoHS: | Y | Topology: | Boost, Flyback |
Number of Outputs: | 1 Output | Switching Frequency: | 500 kHz |
Duty Cycle - Max: | 50 % | Output Voltage: | 4.9 V to 5.1 V |
Output Current: | 1 A | Minimum Operating Temperature: | - 40 C |
Maximum Operating Temperature: | + 105 C | Mounting Style: | SMD/SMT |
Package / Case: | SOIC-8 | Packaging: | Tube |
Isolation: | Isolated | Series: | UC3845B |
Type: | Current Mode PWM Controllers | Brand: | ON Semiconductor |
Shutdown: | Shutdown | Fall Time: | 50 ns |
Operating Supply Voltage: | 36 V | Product Type: | Switching Controllers |
Rise Time: | 50 ns | Factory Pack Quantity: | 98 |
Subcategory: | PMIC - Power Management ICs | Unit Weight: | 0.019048 oz |
Tags | UC3845BVD1, UC3845BVD, UC3845BV, UC3845B, UC3845, UC384, UC38, UC3 |
Expédition
Type d'expédition | Frais d'expédition | Délai de mise en œuvre | |
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DHL | $20.00-$40.00 (0.50 KG) | 2-5 jours | |
FedEx | $20.00-$40.00 (0.50 KG) | 2-5 jours | |
UPS | $20.00-$40.00 (0.50 KG) | 2-5 jours | |
TNT | $20.00-$40.00 (0.50 KG) | 2-5 jours | |
EMS | $20.00-$40.00 (0.50 KG) | 2-5 jours | |
LA POSTE AÉRIENNE ENREGISTRÉE | $20.00-$40.00 (0.50 KG) | 2-5 jours |
Délai de traitement : les frais d'expédition dépendent des différentes zones et pays.
Paiement
Modalités de paiement | Frais de main | |
---|---|---|
Virement bancaire | facturer des frais bancaires de 30,00 $ US. | |
Pay Pal | facturer des frais de service de 4,0 %. | |
Carte de crédit | facturez des frais de service de 3,5%. | |
Western union | charge US.00 banking fee. | |
Paiement de Petit Montant | facturer des frais bancaires de 0,00 $ US. |
Garanties
1. Les composants électroniques que vous achetez incluent une garantie de 365 jours, nous garantissons la qualité du produit.
2. Si certains des articles que vous avez reçus ne sont pas de qualité parfaite, nous organiserons de manière responsable votre remboursement ou votre remplacement. Mais les articles doivent rester dans leur état d’origine.
Emballage
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Étape1 :Produit
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Étape3 :Sac antistatique
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Étape6 :étiquette d'expédition à code-barres
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Nous inspecterons toutes les marchandises avant expédition, garantirons que tous les produits sont en bon état et que les pièces sont neuves et correspondent à la fiche technique originale.
Une fois que toutes les marchandises sont garanties sans problème après l'emballage, nous les emballerons en toute sécurité et les enverrons par Global Express. Il présente une excellente résistance à la perforation et à la déchirure ainsi qu’une bonne intégrité du joint.
Points de pièce
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The UC3845BVD1G is a highly integrated PWM controller IC commonly used in switch-mode power supplies. It features a high-performance voltage mode control with adjustable frequency and duty cycle. This chip is capable of driving power MOSFETs and is designed for high efficiency and precision power conversion applications.
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Equivalent
The equivalent products of the UC3845BVD1G chip are TL3843B, TL3844B, TL3845B, SG3843D, SG3844D, and SG3845D. These devices are all pulse-width modulation controllers with similar specifications and functions. -
Features
The UC3845BVD1G is a high-performance fixed-frequency current-mode controller that is optimized for applications requiring precise control of the output voltage and current. It features an internal amplifier, soft start capability, oscillator synchronization, adjustable dead time control, and protection against overcurrent and overvoltage conditions. -
Pinout
The UC3845BVD1G is a PWM controller with a pin count of 8. It is commonly used in switch-mode power supplies to regulate the voltage output. The functions of the pins include controlling the duty cycle of the output waveform, feedback regulation, and error amplifier inputs. -
Manufacturer
The manufacturer of UC3845BVD1G is ON Semiconductor. ON Semiconductor is a global supplier of semiconductor-based solutions serving a wide range of industries, including automotive, consumer electronics, and industrial applications. They specialize in power management, signal conversion, and custom devices for various electronic devices and systems. -
Application Field
UC3845BVD1G is commonly used as a pulse-width modulation controller in voltage mode regulators, PFC converters, and DC-DC converters for applications such as power supplies, motor drives, LED drivers, and battery chargers. It is also used in systems requiring high efficiency and precise regulation of output voltage. -
Package
The UC3845BVD1G chip is available in a SOP-8 package type, surface mount form, and measures approximately 5.00mm x 4.00mm x 1.50mm in size.
Fiche de données PDF
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