ON UC3843BDR2G
Boost, Flyback Regulator Positive, Isolation Capable Output Step-Up, Step-Up/Step-Down DC-DC Controller IC 14-SOIC
ブランド: ON Semiconductor, LLC
製造元部品 #: UC3843BDR2G
データシート: UC3843BDR2G Datasheet (PDF)
パッケージ/ケース: SOIC-14
製品の種類: 電源管理IC
UC3843BDR2G 概要
The UC3842B, UC3843B 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 a trimmed oscillator for precise duty cycle control, 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, programmable output deadtime, and a latch for single pulse metering.
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 UCX842B has UVLO thresholds of 16 V (on) and 10 V (off), ideally suited for off-line converters. The UCX843B is tailored for lower voltage applications having UVLO thresholds of 8.5 V (on) and 7.6 V (off).
特徴
- Trimmed Oscillator for Precise Frequency Control
- Oscillator Frequency Guaranteed at 250 kHz
- Current Mode Operation to 500 kHz
- 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
応用
ONSEMI仕様
パラメータ | 価値 | パラメータ | 価値 |
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Manufacturer: | ON Semiconductor | Product Category: | Switching Controllers |
RoHS: | Y | Topology: | Boost, Flyback, Forward |
Number of Outputs: | 1 Output | Switching Frequency: | 500 kHz |
Duty Cycle - Max: | 96 % | Output Voltage: | 4.9 V to 5.1 V |
Output Current: | 1 A | Minimum Operating Temperature: | 0 C |
Maximum Operating Temperature: | + 70 C | Mounting Style: | SMD/SMT |
Package / Case: | SOIC-14 | Packaging: | Reel |
Series: | UC3843B | Type: | Current Mode PWM Controllers |
Brand: | ON Semiconductor | Fall Time: | 50 ns |
Operating Supply Voltage: | 30 V | Product Type: | Switching Controllers |
Rise Time: | 50 ns | Factory Pack Quantity: | 2500 |
Subcategory: | PMIC - Power Management ICs | Unit Weight: | 0.011923 oz |
Tags | UC3843BDR2, UC3843BDR, UC3843BD, UC3843B, UC3843, UC384, UC38, UC3 |
配送
配送タイプ | 配送料 | リードタイム | |
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DHL | $20.00-$40.00 (0.50 KG) | 2-5 日々 | |
フェデックス | $20.00-$40.00 (0.50 KG) | 2-5 日々 | |
UPS | $20.00-$40.00 (0.50 KG) | 2-5 日々 | |
TNT | $20.00-$40.00 (0.50 KG) | 2-5 日々 | |
EMS | $20.00-$40.00 (0.50 KG) | 2-5 日々 | |
登録された航空便 | $20.00-$40.00 (0.50 KG) | 2-5 日々 |
処理時間:送料は地域や国によって異なります。
支払い
支払条件 | ハンドフィー | |
---|---|---|
電信送金 | 銀行手数料 US$30.00 を請求します。 | |
ペイパル | 4.0%のサービス料がかかります。 | |
クレジットカード | 3.5%のサービス料がかかります。 | |
ウエスタンユニオン | charge US.00 banking fee. | |
送金サービス | 銀行手数料は 0.00 米ドルかかります。 |
保証
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パーツポイント
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The UC3843BDR2G chip is a voltage mode PWM controller used in power supply applications. It operates at a fixed frequency of 500 kHz and has built-in features like an error amplifier, current sense comparator, oscillator, and soft-start. This chip is commonly used in dc-dc converters, uninterruptible power supplies (UPS), battery chargers, and LED drivers.
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Equivalent
Some equivalent products of the UC3843BDR2G chip include the UC3843BD1R2G, UC3843BNG, and UC3843BD1013TR. -
Features
The UC3843BDR2G is a high-performance voltage mode controller that offers features like a 1A totem pole output driver, 1% output voltage tolerance, oscillator frequency up to 500kHz, and a low start-up and operating current. It also has built-in soft-start functionality, an error amplifier with very low input bias current, and a maximum duty cycle of 50%. -
Pinout
The UC3843BDR2G is a 8-pin integrated circuit (IC) that serves as a PWM controller. Its pin count and function are as follows: 1. Error Amplifier Output 2. Compensation 3. Voltage Feedback Input 4. Ground 5. Current Sense Input 6. Over-temperature Protection 7. Output 8. Voltage Reference and Oscillator -
Manufacturer
The manufacturer of the UC3843BDR2G is ON Semiconductor. It is a global semiconductor company, specializing in power management, automotive, and IoT solutions. -
Application Field
The UC3843BDR2G is a high-performance fixed-frequency current-mode controller integrated circuit. It is commonly used in applications such as AC-DC power supplies, active power factor correction, and DC-DC converters. -
Package
The UC3843BDR2G chip comes in a SOIC (Small Outline Integrated Circuit) package. Its form is Dual-In-Line (DIL) style, which means it has two parallel rows of pins. The size of the chip is typically 4.9mm x 3.91mm.
データシート PDF
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