The JTM1535 is a constant feequency 6-pin SOT23 current mode

1.产品概述 2.产品特点 3.应用范围 4.技术规格书下载（产品PDF文档）
5.产品封装图 6.电路原理图 7.功能概述 8.相关产品

一,产品概述(General Description)

The JTM1535 is a constant feequency 6-pin SOT23 current mode step-up
converter intended for small, low powerapplications. The JTM1535 switches at
1.2MHz and allows the use of tiny, low cost capacitors and inductors 2mm or
less in height. Internal soft-start results in small inrush current and extends battery
life.
The JTM1535 features automatic shifting to pulse frequency modulation
mode at light loads. JTM1535 includes under-voltage lockout, current limiting, and thermal overload protection to prevent damage in the event of an
output overload. The JTM1535 is available in a small 6-pin SOT-23 package.

二.产品特点(Features)

ntegrated 80mΩ Power MOSFET
2V to 24V Input Voltage
1.2MHz Fixed Switching Frequency
Internal 4A Switch Current Limit
Adjustable Output Voltage
Internal Compensation
Up to 28V Output Voltage
Automatic Pulse Frequency Modulation
Mode at Light Loads
up to 97% Efficiency
Available in a 6-Pin SOT23-6 Package

三,应用范围 (Applications)

Battery-Powered Equipment
Set-Top Boxed
White LED Driver
DSL and Cable Modems and Routers
Networking cards powered from PCI or PCI express slots

四.技术规格书下载（产品PDF）

JTM1535

五,产品封装图 (Package)

PIN	NAME	FUNCTION
1	LX	Power Switch Output. LX is the drain of the internal MOSFET switch. Connect the power inductor and output rectifier to LX. LX can swing between GND and 28V.
2	GND	Ground Pin
3	FB	Feedback Input. The FB voltage is 0.6V. Connect a resistor divider to FB.
4	EN	Regulator On/Off Control Input. A high input at EN turns on the converter, and a low input turns it off. When not used, connect EN to the input supply for automatic startup.
5	IN	Input Supply Pin. Must be locally bypassed.
6	NC	Not Connection

六.电路原理图

七,功能概述

Parameter	Conditions	MIN	TYP	MAX	unit
Operating Input Voltage		2		24	V
Under Voltage Lockout				1.98	V
Under Voltage Lockout Hysteresis			100		mV
Current (Shutdown)	VEN = 0V		0.1	1	µA
Quiescent Current (PFM)	VFB=0.7V，No switch		100	200	µA
Quiescent Current (PWM)	VFB=0.5V，switch		1.6	2.2	mA
Switching Frequency			1.2		MHz
Maximum Duty Cycle	VFB = 0V	90			%
EN Input High Voltage		1.5			V
EN Input Low Voltage				0.4	V
FB Voltage		0.588	0.6	0.612	V
FB Input Bias Current	VFB = 0.6V	-50	-10		nA
LX On Resistance (1)			80		mΩ
LX Current Limit (1)	VIN= 5V, Duty cycle=50%		3.5		A
LX Leakage	VLX = 20V			1	μA
Thermal Shutdown			155		℃

八,相关芯片选择指南

型号	沟道	VDS	VGS	VTH	ID	IDM	RDS(on)	封装	状态
		(Max)			(Max)		(Max)
JTM2301/A	P沟道	-20V	-10V	-0.7V	-3A	-10A	65mΩ	SOT23	量产
								SOT23-3L
JTM2301B	P沟道	-20V	-12V	-0.7V	-2.8A	-10A	83mΩ	SOT23	量产

JTM2301C	P沟道	-12V	-12V	-0.7V	-2.8A	-10A	85mΩ	SOT23	量产

JTM2305	P沟道	-20V	-12V	-0.7V	-4.1A	-15A	39mΩ	SOT23	量产

JTM2333	P沟道	-12V	-12V	0.32V	6A	20A	30mΩ	SOT23-3L	量产
JTM2341/B	P沟道	-30V	-20V	-1V	-4.2A	-30A	50mΩ	SOT23-3L	量产
								SOT23
JTM3401/B	P沟道	-30V	-20V	-1V	-4.2A	-30A	50mΩ	SOT23-3L	量产
								SOT23
JTM3401C	P沟道	-30V	-20V	-1.6V	-2.5A	-10A	72mΩ	SOT23	量产

JTM3407/B	P沟道	-30V	-20V	-1.5V	-4.2A	-20A	55mΩ	SOT23-3L	量产
								SOT23
JTM3413/B	P沟道	-20V	-12V	-0.7V	-2.5A	-10A	118mΩ	SOT23-3L	量产
								SOT23
JTM3415E	P沟道	-20V	-10V	-0.65V	-4.0A	-30A	34mΩ	SOT23-3L	量产
	带ESD保护
JTM3421/B	P沟道	-30V	-20V	-1V	-4.2A	-30A	50mΩ	SOT23-3L	量产
								SOT23
JTM2319	P沟道	-40V	-20V	-1.5V	-5.3A	-20A	73mΩ	SOT-23-3L	量产
JTM2309	P沟道	-60V	-20V	-1.0V	-1.8A	-7A	170mΩ	SOT-23-3L	量产
JTM6401	P沟道	-30V	-20V	-1V	-5.0A	-30A	50mΩ	SOT23-6L	量产

JTM9435	P沟道	-30V	-20V	-1.6V	-5.1A	-20A	48mΩ	SOP8	量产

JTM9435B	P沟道	-20V	-10V	-0.7V	-5A	-20A	60mΩ	SOP8	量产

JTM4435	P沟道	-30V	-20V	-1.5V	-9.1A	-50A	15mΩ	SOP8	量产

JTM4407	P沟道	-30V	-20V	-1.65V	-12A	-60A	14mΩ	SOP8	量产

JTM4409	P沟道	-30V	-20V	-1.75V	-15A	-80A	8mΩ	SOP8	量产

JTM4443	P沟道	-40V	-20V	-1.5V	-6A	-24A	73mΩ	SOP8	量产

JTM4485	P沟道	-40V	-20V	-2.0V	-15A	-60A	30mΩ	SOP8	量产

JTM4441	P沟道	-55V	-20V	-2.6V	-5A	-25A	64mΩ	SOP8	量产

JTM5853	P沟道+肖特基	22V	8V	0.69V	3A	12A	110mΩ	DFN2*3-8	量产
JTM16P12D	P沟道	12V	12V	0.7V	16A	65A	18mΩ	DNF2*2-6	量产

(责任编辑：oumao18)