LTC3564 - 2.25MHz, 1.25A Synchronous Step-Down Regulator
The LTC3564 is a high efficiency monolithic synchronous buck regulator using a constant frequency, current mode architecture. Supply current during operation is only 20μA, dropping to ≤1μA in shutdown. The 2.5V to 5.5V input voltage range makes the LTC3564 ideally suited for single Li-Ion battery-powered or 3.3V to 5V input voltage applications. 100% duty cycle provides low drop- out operation, extending battery life in portable systems. Automatic Burst Mode operation increases efficiency at light loads, further extending battery runtime.
Switching frequency is internally set at 2.25MHz, allowing the use of small surface mount inductors and capacitors.
The internal synchronous switch increases efficiency and eliminates the need for an external Schottky diode. Low output voltages are easily supported with the 0.6V feedback reference voltage. The LTC3564 is available in low profile (1mm) ThinSOT and 6-Lead (2mm × 3mm) DFN packages.
特点- High Efficiency: Up to 96%
- Very Low Quiescent Current: Only 20μA
- 1.25A Output Current
- 2.5V to 5.5V Input Voltage Range
- 2.25MHz Constant Frequency Operation
- No Schottky Diode Required
- Low Dropout Operation: 100% Duty Cycle
- 0.6V Reference Allows Low Output Voltages
- Shutdown Mode Draws ≤ 1μA Supply Current
- Current Mode Operation for Excellent Line and
- Load Transient Response
- Overtemperature Protected
- Low Profile (1mm) ThinSOT and
- 6-Lead (2mm × 3mm) DFN Packages
典型应用
 | 应用- Cellular Telephones
- Wireless and DSL Modems
- Digital Still Cameras
- Media Players
- Portable Instruments
- Point of Load Regulation
封装信息
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Order Information 订购型号| 器件型号 | 封装 | 温度 | 价格 (以 1 ~ 99 片为批量) | 价格 (以 1000 片为批量) * |
|---|
| LTC3564EDCB#TRMPBF | 2x3 DFN-6 | E | $2.79 | $2.00 |
| LTC3564EDCB#TRPBF | 2x3 DFN-6 | E | $2.79 | $1.95 |
| LTC3564ES5#TRMPBF | SOT-23 | E | $2.79 | $2.00 |
| LTC3564ES5#TRPBF | SOT-23 | E | $2.79 | $1.95 |
| LTC3564IDCB#TRMPBF | 2x3 DFN-6 | I | $3.20 | $2.29 |
| LTC3564IDCB#TRPBF | 2x3 DFN-6 | I | $3.20 | $2.24 |
| LTC3564IS5#PBF | SOT-23 | I | $3.20 | |
| LTC3564IS5#TRMPBF | SOT-23 | I | $3.20 | $2.29 |
| LTC3564IS5#TRPBF | SOT-23 | I | $3.20 | $2.24 |
演示电路板
| 器件型号 | 描述 | 价格 |
|---|
| DC1158A | LTC3564ES5 Demo Board (TSOT) | 2.25MHz, 2.5V ≤ VIN ≤ 5.5V, Vout = 1.2V/1.5V/1.8V @ 1.25A | $75.00 |
| DC1343A | LTC3564DCB6 Demo Board (DFN) | 2.25MHz, 2.5V ≤ VIN ≤ 5.5V, Vout = 1.2V/1.5V/1.8V @ 1.25A | 联系凌力尔特 |
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