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LTC1735-1 - 典型应用图例：

LTC1735-1 - 封装图解：

LINEAR凌力尔特芯片：

LTC1735-1 - LTC1735-1是High Efficiency Synchronous Step-Down Switching Regulator

LTC1735-1是LINEAR凌力尔特公司的一款外部开关电源控制器产品，LTC1735-1是LTC1735-1是High Efficiency Synchronous Step-Down Switching Regulator，本站介绍了LTC1735-1的封装应用图解、特点和优点、功能等，并给出了与LTC1735-1相关的LINEAR元器件型号供参考。

LTC1735-1 - LTC1735-1是High Efficiency Synchronous Step-Down Switching Regulator - 外部开关电源控制器 - 电源管理 - 凌力尔特

LTC1735-1 - High Efficiency Synchronous Step-Down Switching Regulator

LTC1735-1 - High Efficiency Synchronous Step-Down Switching Regulator - Linear Technology（凌力尔特）

功能描述

The LTC1735-1 is a synchronous step-down switching regulator controller optimized for CPU power. OPTI-LOOP compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values.

The operating frequency (synchronizable up to 500kHz) is set by an external capacitor allowing maximum flexibility in optimizing efficiency. The output voltage is monitored by a power good window comparator that indicates when the output is within 7.5% of its programmed value, conforming to Intel Mobile CPU Specifications.

Protection features include internal foldback current limiting, output overvoltage crowbar and optional short-circuit shutdown. Soft-start is provided by an external capacitor that can be used to properly sequence supplies. The operating current level is user-programmable via an external current sense resistor. Wide input supply range allows operation from 3.5V to 30V (36V maximum).

Pin defeatable Burst Mode™ operation provides high efficiency at low load currents while 99% duty cycle provides low dropout operation.

特点

Dual N-Channel MOSFET Synchronous Drive

Programmable/Synchronizable Fixed Frequency

VOUT Range: 0.8V to 7V

Wide VIN Range: 3.5V to 36V Operation

Very Low Dropout Operation: 99% Duty Cycle

OPTI-LOOP™ Compensation Minimizes COUT

±1% Output Voltage Accuracy

Power Good Output Voltage Monitor

Internal Current Foldback

Output Overvoltage Crowbar Protection

Latched Short-Circuit Shutdown Timer with Defeat Option

Optional Programmable Soft-Start

Remote Output Voltage Sense

Logic Controlled Micropower Shutdown: IQ < 25µA

Available in 16-Lead Narrow SSOP and SO Packages

应用

Notebook and Palmtop Computers, PDAs

Power Supply for Mobile Pentium® III Processor with SpeedStep™ Technology

Cellular Telephones and Wireless Modems

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)
LTC1735CGN-1	SSOP-16	C	$3.80	$3.25
LTC1735CGN-1#PBF	SSOP-16	C	$3.80	$3.25
LTC1735CGN-1#TR	SSOP-16	C		$3.31
LTC1735CGN-1#TRPBF	SSOP-16	C		$3.31
LTC1735CS-1	SO-16	C	$3.65	$3.10
LTC1735CS-1#PBF	SO-16	C	$3.65	$3.10
LTC1735CS-1#TR	SO-16	C		$3.16
LTC1735CS-1#TRPBF	SO-16	C		$3.16
LTC1735IGN-1	SSOP-16	I	$5.05	$4.25
LTC1735IGN-1#PBF	SSOP-16	I	$5.05	$4.25
LTC1735IGN-1#TR	SSOP-16	I		$4.31
LTC1735IGN-1#TRPBF	SSOP-16	I		$4.31
LTC1735IS-1	SO-16	I	$4.90	$4.05
LTC1735IS-1#PBF	SO-16	I	$4.90	$4.05
LTC1735IS-1#TR	SO-16	I		$4.11
LTC1735IS-1#TRPBF	SO-16	I		$4.11

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