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$5000ST UC3844BD1
Boost, Flyback Regulator Positive, Isolation Capable Output Step-Up, Step-Up/Step-Down DC-DC Controller IC 8-SOIC
ブランド: STMicroelectronics, Inc
製造元部品 #: UC3844BD1
データシート: UC3844BD1 Datasheet (PDF)
パッケージ/ケース: SO-8
製品の種類: DC DC Switching Controllers
UC3844BD1 概要
The UC3844BD1 is a versatile control IC that is part of the UC284xB family, offering a range of features for implementing off-line or DC to DC fixed frequency current mode control schemes with minimal additional components. The internal circuits of this IC include a trimmed oscillator for precise duty cycle control, under voltage lockout with a low start-up current, a precision reference for accurate error amp input, logic for latched operation, a PWM comparator for current limit control, and a totem pole output stage capable of sourcing or sinking high peak current. The output stage is designed for driving N-Channel MOSFETs and has low off-state characteristics
特徴
- Undervoltage lockout for safe and reliable operation
- Shutdown function for fault tolerance and protection
- Error amplifier with high gain bandwidth for stability
- Tight tolerance voltage reference for precision control
仕様
| パラメータ | 価値 | パラメータ | 価値 |
|---|---|---|---|
| Manufacturer: | STMicroelectronics | Product Category: | Switching Controllers |
| RoHS: | Y | Topology: | Boost, Flyback |
| Number of Outputs: | 1 Output | Switching Frequency: | 500 kHz |
| Duty Cycle - Max: | 50 % | Output Voltage: | 4.90 V to 5.10 V |
| Output Current: | 1000 mA | Minimum Operating Temperature: | - 40 C |
| Maximum Operating Temperature: | + 150 C | Mounting Style: | SMD/SMT |
| Package / Case: | SO-8 | Packaging: | Tube |
| Series: | UC3844B | Type: | Current Mode PWM Controllers |
| Brand: | STMicroelectronics | Fall Time: | 50 ns |
| Operating Supply Voltage: | 30 V | Product Type: | Switching Controllers |
| Rise Time: | 50 ns | Factory Pack Quantity: | 2000 |
| Subcategory: | PMIC - Power Management ICs | Unit Weight: | 0.017870 oz |
| Tags | UC3844BD1, UC3844BD, UC3844B, UC3844, UC384, UC38, UC3 | feature-type | Current Mode PWM Controller |
| feature-maximum-power-dissipation-mw | 702 | feature-packaging | Rail |
| feature-rad-hard | feature-pin-count | 8 | |
| feature-supplier-package | SOIC N | feature-standard-package-name1 | SO |
| feature-cecc-qualified | No | feature-esd-protection | Yes |
| feature-military | No | feature-aec-qualified | No |
| feature-aec-qualified-number | feature-auto-motive | No | |
| feature-p-pap | No | feature-eccn-code | EAR99 |
| feature-svhc | Yes |
配送
| 配送タイプ | 配送料 | リードタイム | |
|---|---|---|---|
 |
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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2.受け取った商品の一部が完璧な品質ではない場合、当社は責任を持って返金または交換を手配します。 ただし、商品は元の状態のままでなければなりません。
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パーツポイント
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The UC3844BD1 is a high-performance voltage mode controller IC used in switched-mode power supplies. It offers adjustable frequency operation, soft-start capability, and overcurrent protection. This versatile chip is commonly used in applications such as DC-DC converters, battery chargers, and LED drivers.
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Equivalent
The equivalent products of UC3844BD1 chip are UC3844, UC3844A, UC3844B, and UC3844C. These chips are all controllers for power supply circuits with similar features and specifications. -
Features
1. Current mode PWM controller 2. Operating frequency up to 500 kHz 3. Adjustable active low COMP pin 4. Output voltage precision within ±1% 5. Adjustable soft-start operation for improved stability 6. Overcurrent protection and thermal shutdown 7. D1 package with enhanced thermal performance -
Pinout
UC3844BD1 is a PWM controller with a built-in driver. It has an 8-pin DIP package and its functions include providing constant voltage or constant current regulation for power supplies, battery chargers, and LED drivers. It has a feedback pin, a ground pin, an output pin, an input pin, and other pins for power supply and regulation. -
Manufacturer
UC3844BD1 is manufactured by STMicroelectronics, a multinational semiconductor company. STMicroelectronics is a leading supplier of semiconductor solutions serving customers across various sectors such as automotive, industrial, consumer electronics, and telecommunications. The company focuses on innovation and sustainability to deliver cutting-edge products to its customers worldwide. -
Application Field
UC3844BD1 is commonly used in switch-mode power supply applications such as DC-DC converters, buck converters, boost converters, and flyback converters. It is also utilized in battery charging circuits, LED lighting drivers, and motor control systems. Its versatile features make it suitable for various power management applications. -
Package
The UC3844BD1 chip is a surface-mounted DIP-8 package type. It comes in a tube form, and its size is 6.6mm x 10mm x 2.5mm.
データシート PDF
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