LTC3564是2.25MHz, 1.25A Synchronous Step-Down Regulator

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LTC3564 - LTC3564是2.25MHz, 1.25A Synchronous Step-Down Regulator

LTC3564是Linear公司的一款微功率降压产品，LTC3564是2.25MHz, 1.25A Synchronous Step-Down Regulator，本站介绍了LTC3564的封装应用图解、特点和优点、功能等，并给出了与LTC3564相关的凌力尔特元器件型号供参考。

LTC3564 - 2.25MHz, 1.25A Synchronous Step-Down Regulator

LTC3564 - 2.25MHz, 1.25A Synchronous Step-Down Regulator - Linear Technology（凌力尔特）

功能描述

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

应用

Cellular Telephones

Wireless and DSL Modems

Digital Still Cameras

Media Players

Portable Instruments

Point of Load Regulation

以下列出了不同封装及包装形式的具体型号,并标出了直接在linear官网上订货的价格（美元）

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