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SY8089AのメーカーはSilergyです、この部品の機能は「Synchronous Step Down Regulator」です。 |
部品番号 | SY8089A |
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部品説明 | Synchronous Step Down Regulator | ||
メーカ | Silergy | ||
ロゴ | |||
このページの下部にプレビューとSY8089Aダウンロード(pdfファイル)リンクがあります。 Total 10 pages
Application Note: AN_SY8089/SY8089A
High Efficiency 5.5V, 2A continuous, 3A peak, 1MHz
Synchronous Step Down Regulator
General Description
The SY8089 and SY8089A are high-efficiency, high
frequency synchronous step-down DC-DC regulator IC
capable of delivering up to 2A output current. The
SY8089 and SY8089A operate over a wide input
voltage range from 2.7V to 5.5V and integrate main
switch and synchronous switch with very low RDS(ON)
to minimize the conduction loss.
Low output voltage ripple and small external inductor
and capacitor sizes are achieved with greater than
1MHz switching frequency.
SY8089 integrates short circuit and over-voltage latch
off protection.
Ordering Information
SY8089 □(□□)□
Temperature Code
Package Code
Optional Spec Code
Temperature Range: -40°C to 85°C
Ordering Number Package type
SY8089AAC
SOT23-5
SY8089AAAC
SOT23-5
Note
Features
• Low RDS(ON) for internal switches
(top/bottom):110mΩ/80mΩ
• 2.7-5.5V input voltage range
• 2A continuous, 3A peak load current capability
• 1MHz switching frequency minimizes the external
components
• Internal softstart limits the inrush current
• Reliable short circuit protection:
SY8089: Latch off protection
SY8089A: Hic-cup mode protection
• Reliable over-voltage protection:
SY8089: Latch off protection
SY8089A: No latch off protection
• 100% dropout operation
• RoHS Compliant and Halogen Free
• Compact package: SOT23-5
Applications
• LCD TV
• Set Top Box
• Net PC
• Mini-Notebook PC
• Access Point Router
Typical Applications
VIN: 2.7-5.5V 4
IN
3 L1:2.2µH
LX
VOUT: 1.8V
ON/ OFF
CIN
22µF
1
FB 5
EN
GND
2
R1
200k
C1 COUT
22pF 22µFх2
R2
100k
Figure 1.Schematic diagram
Figure 2. Efficiency vs Load Current
AN_SY8089/A Rev. 0.9A Silergy Corp. Confidential- Prepared for Customer Use Only 1
1 Page Block Diagram
SY8089/8089A
(SY8089)
(SY8089A)
AN_SY8089/A Rev. 0.9A Silergy Corp. Confidential- Prepared for Customer Use Only 3
3Pages SY8089/8089A
AN_SY8089/A Rev. 0.9A Silergy Corp. Confidential- Prepared for Customer Use Only 6
6 Page | |||
ページ | 合計 : 10 ページ | ||
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PDF ダウンロード | [ SY8089A データシート.PDF ] |
データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。 |
部品番号 | 部品説明 | メーカ |
SY8089 | Synchronous Step Down Regulator | Silergy |
SY8089A | Synchronous Step Down Regulator | Silergy |