LT1680是High Power DC/DC Step-Up Controller

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LT1680 - LT1680是High Power DC/DC Step-Up Controller

LT1680是Linear公司的一款反激式、正激式和隔离式控制器产品，LT1680是High Power DC/DC Step-Up Controller，本站介绍了LT1680的封装应用图解、特点和优点、功能等，并给出了与LT1680相关的凌力尔特元器件型号供参考。

LT1680 - High Power DC/DC Step-Up Controller

LT1680 - High Power DC/DC Step-Up Controller - Linear Technology（凌力尔特）

功能描述

The LT1680 is a high power, current mode switching power supply controller optimized for boost topologies. The IC drives an N-channel MOSFET switch for DC/DC converter applications up to 60V input. A high current gate drive output handles up to 10,000pF gate capacitance, enabling the construction of high power DC/DC converters. Current sense common mode range up to 60V allows current sensing to be referenced to the input supply, eliminating the need for sense blanking circuits.

The LT1680 incorporates programmable average current limiting allowing accurate limiting of DC current in the magnetics, independent of ripple current. User adjustable slope compensation provides stable operation at duty cycles up to 90%.

The LT1680 operating frequency is programmable and can be synchronized up to 200kHz. Minimum off-time operation provides switch protection. The IC also incorporates a soft start feature that is gated by both shutdown and undervoltage lockout conditions.

特点

High Voltage: Operation Up to 60V

High Current: N-Channel Drive Handles Up to 10,000pF Gate Capacitance

Programmable Average Current Limiting

5V Reference Output with 10mA External Loading Capability

Fixed Frequency Current Mode Operation

Oscillator Synchronizable Up to 200kHz

Undervoltage Lockout with Hysteresis

Programmable Start Inhibit for Power Supply Sequencing and Protection

User Adjustable Slope Compensation

应用

High Power Single Board Systems

Distributed Power Converters

Industrial Control Systems

Lead-Acid Battery Back-Up Systems

Automotive and Heavy 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)
LT1680CN	N-16	C	$4.90	$4.00
LT1680CN#PBF	N-16	C	$4.90	$4.00
LT1680CSW	SW-16	C	$5.15	$4.20
LT1680CSW#PBF	SW-16	C	$5.15	$4.20
LT1680CSW#TR	SW-16	C		$4.26
LT1680CSW#TRPBF	SW-16	C		$4.26
LT1680IN	N-16	I	$5.90	$4.80
LT1680IN#PBF	N-16	I	$5.90	$4.80
LT1680ISW	SW-16	I	$6.15	$5.00
LT1680ISW#PBF	SW-16	I	$6.15	$5.00
LT1680ISW#TR	SW-16	I		$5.06
LT1680ISW#TRPBF	SW-16	I		$5.06