LTC3721-1 Push-Pull PWM Controller

The LTC®3721-1 push-pull PWM controller provides all of the control and protection functions necessary for compact and highly efficient, isolated power converters. High integration minimizes external component count, while preserving design flexibility.

The robust push-pull output stages switch at half the oscillator frequency. Dead-time is independently programmed with an external resistor. A UVLO program input provides precise system turn-on and turn off voltages. The LTC3721-1 features peak current mode control with programmable slope compensation and leading edge blanking.

The LTC3721-1 features extremely low operating and start-up currents and reliable short-circuit and overtemperature protection. The LTC3721-1 is offered in 16-pin SSOP and (4mm × 4mm) QFN packages

产品特点 Features

High Efficiency Push-Pull PWM
1.5A Sink, 1A Source Output Drivers
Adjustable Push-Pull Dead-Time
Adjustable System Undervoltage Lockout and Hysteresis
Adjustable Leading Edge Blanking
Low Start-Up and Quiescent Currents
Current Mode Operation
Single Resistor Slope Compensation
VCC UVLO and 25mA Shunt Regulator
Programmable Fixed Frequency Operation to 1MHz
Soft-Start, Cycle-by-Cycle Current Limiting and Hiccup Mode Short-Circuit Protection
5V, 15mA Low Dropout Regulator
16-Pin SSOP and (4mm x 4mm) QFN Packages

应用

Telecommunications, Infrastructure Power Systems
Distributed Power Architectures
Server Power Supplies
High Density Power Modules

典型应用图

参数

LTC3721-1 订购信息和价格参考Package Variations and Pricing

器件型号	封装	引脚	温度	价格 (以 1 ~ 99 片为批量)	价格 (以 1000 片为批量) *
LTC3721EGN-1	SSOP	16	E	$6.52	$4.45
LTC3721EGN-1#PBF	SSOP	16	E	$6.52	$4.45
LTC3721EGN-1#TR	SSOP	16	E		$4.51
LTC3721EGN-1#TRPBF	SSOP	16	E		$4.51
LTC3721EUF-1	QFN	16	E	$6.70	$4.55
LTC3721EUF-1#PBF	QFN	16	E	$6.70	$4.55
LTC3721EUF-1#TR	QFN	16	E		$4.65
LTC3721EUF-1#TRPBF	QFN	16	E		$4.65

LTC3721-1 数据手册及相关资料下载

数据手册(英文) : LTC3721-1 - Push-Pull PWM Controller.PDF
可靠性数据 : R384 Reliability Data .PDF