The JTM1547,JTM1547B is a high frequency, high efficiency D(2)

七,功能概述

The boost converter is designed for output voltage up to 26V with a switch MAX peak current
limit of 4 A. The device, which operates in a current mode scheme with quasi-constant frequency, is
externally 1.2MHZ and the minimum input voltage is 2.3 V. To control the inrush current at start-up a soft-
start pin is available.
During the on-time, the voltage across the inductor causes the current in it to rise. When the
current reaches a threshold value set by the internal GM amplifier, the power transistor is turned off, the
energy stored into the inductor is then released and the current flows through the Schottky diode
towards the output of the boost converter. The off- time is fixed for a certain Vin and Vs, and therefore
maintains the same frequency when varying these parameters.

八,相关产品

内置MOS DC-DC 升压IC

型号	工作模式	工作	输出电压	输出电	输出电	内置MOS	效率	静态	工作频率	封装	直接替代型号
		电压范围		压形式	压精度	最大输		电流
						出电流
JTMXX1C	PFM	0.8V-Vout	2.2/2.7/2.8	固定输出	±2%	500mA	85%	4uA	350KHz	SOT-89	XC6382/XC6371/
			3.0/3.3/							SOT23-3L	RT9261B/HT77XX/
			3.6/4.0/5.0V							TO-92	BL8530/AIC1642/
											S8351
JTM1538	PWM	2.5V-6.0V	最大28V	可调输出	±2%	1.5A	90%	1uA	1.2MHz	SOT-25	AT1308/LTC1615/
	PFM										AIC1896/LM2703/
											LM2731/TPS61040/
											G5103/G5125/XC9119/
											AP1522/EUP2571/
											MP1540/1/RT9284A/
											ACT6311/APW7137/
											AP3012
JTM1548	PWM	2.5V-6.0V	最大12V	可调输出	±2%	3.5A	95%	1uA	1.2MHz	SOT-26	SY7208/SY7152/
	PFM										LTC3426/TPS6107X
JTM1548B	PWM	2.0V-24V	最大28V	可调输出	±2%	4A	97%	0.1uA	1.2MHz	SOT-26	SY7208/SY7152/
	PFM										LTC3426/TPS6107X
JTM1558	PWM	2.5V-6.5V	最大8V	可调输出	±2%	5A	93%	100uA	1.2MHz	SOT-26	SY7208/SY7152/
											LTC3426/TPS6107X
JTM1547	PWM	2.3-6V	最大14V	可调输出	±2%	4A/带限	96%	0.1uA	1.2MHz	SOT-26	FP6291
						流保护
JTM6291	PWM	2.5V-6.0V	最大12V	可调输出	±2%	2A/带限	90%	200uA	1.2MHz	SOT-26	FP6291
						流保护
JTM1534	PWM	0.9V-6.0V	1.5V-12V	可调输出	±2%	4A	90%	0.5uA	1MHz	SOT-25
	PFM
JTM1615	PWM	1.2V-15V	最大34V	可调输出	±2%	350mA	80%	1uA	1MHz	SOT-25	LTC1615/AIC1896/
											LM2703/5/AT1308/
											TPS61040/1/G5103
											XC9119/MP1522/
											AP1522/EUP2571/
											MP1540/1/RT9284A
											G5125/LM2731/
											AP5727
JTM9266	PWM	1.0V-10V	最大12V	可调输出	±2%	2.5A	92%	70uA	450KHz	SOT-26	RT9266/PT1301/
											AX1301
JTM6293	PWM	2.6V-6.0V	最大12V	可调输出	±2%	3.5A	90%	170uA	1MHz	ESOP-8	FP6293
JTM6293B	PWM	2.5V-6.0V	最大9V	可调输出	±2%	4.5A	95%	0.1uA	1MHz	ESOP-8	FP6298/FP6293
	PFM
JTM9225	PWM	2.5V-6.5V	最大8V	可调输出	±2%	5.5A	93%	100uA	1.2MHz	ESOP-8
JTM6297	PWM	3.6V-26V	最大60V	可调输出	±2%	2A	90%	70uA	400KHz	SOP-8
JTM6298	PWM	3.6V-36V	最大60V	可调输出	±2%	3A	92%	70uA	400KHz	TO252-5L
JTM6299	PWM	5V-45V	最大60V	可调输出	±2%	5A	94%	70uA	220KHz	TO263-5L

(责任编辑：oumao18)