LT3503是1A, 2.2MHz Step-Down Switching Regulator in 2mm x 3mm DFN

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LT3503 - LT3503是1A, 2.2MHz Step-Down Switching Regulator in 2mm x 3mm DFN

LT3503是Linear公司的一款内部开关电源降压产品，LT3503是1A, 2.2MHz Step-Down Switching Regulator in 2mm x 3mm DFN，本站介绍了LT3503的封装应用图解、特点和优点、功能等，并给出了与LT3503相关的凌力尔特元器件型号供参考。

LT3503 - 1A, 2.2MHz Step-Down Switching Regulator in 2mm x 3mm DFN

LT3503 - 1A, 2.2MHz Step-Down Switching Regulator in 2mm x 3mm DFN - Linear Technology（凌力尔特）

功能描述

The LT3503 is a current mode PWM step-down DC/DC converter with an internal 1.45A power switch. The wide operating input range of 3.6V to 20V makes the LT3503 ideal for regulating power from a wide variety of sources. Its high operating frequency allows the use of tiny, low cost inductors and ceramic capacitors, resulting in low, predictable output ripple.

Cycle-by-cycle current limit provides protection against shorted outputs and soft-start eliminates input current surge during start-up. The low current (<2µA) shutdown mode provides output disconnect, enabling easy power management in battery-powered systems.

特点

Wide Input Range: 3.6V to 20V

5V at 1.2A from 11V to 18V Input

5V at 1A from 7.2V to 18V Input

3.3V at 1.2A from 8.5V to 12V Input

3.3V at 1A from 5.5V to 12V Input

Fixed Frequency Operation: 2.2MHz

Output Adjustable Down to 780mV

Short-Circuit Robust

Uses Tiny Capacitors and Inductors

Soft-Start

Internally Compensated

Low Shutdown Current: <2µA

Low VCESAT Switch: 400mV at 1A

Thermally Enhanced, 2mm x 3mm 6-Pin DFN Low Profile Package

应用

Automotive Battery Regulation

Industrial Control Supplies

Wall Transformer Regulation

Distributed Supply Regulation

Battery-Powered Equipment

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)
LT3503EDCB	2x3 DFN-6	E	$3.21
LT3503EDCB#PBF	2x3 DFN-6	E	$3.21
LT3503EDCB#TR	2x3 DFN-6	E	$3.21	$2.25
LT3503EDCB#TRM	2x3 DFN-6	E	$3.26	$2.30
LT3503EDCB#TRMPBF	2x3 DFN-6	E	$3.26	$2.30
LT3503EDCB#TRPBF	2x3 DFN-6	E	$3.21	$2.25