目录
一,产品概述(General Description)
The JTM9703 is a low voltage, high performance single N-MOSFET power switch, designed for power rail on/off control with low RDS(ON)≈70mΩ and full
protection functions. The JTM9703 equipped with a charge pump circuitry to drive the internal MOSFET switch and a flag output is available to indicate fault
conditions against large di/dt which may cause the supply to fall out of regulation. In order to fit different application, an ISET pin is offered for current limit
point setting, a resistor from ISET to ground sets the current limit for the switch.
Additional features include soft-start to limit inrush current during plug-in, thermal shutdown to prevent catastrophic switch failure from high-current loads, Output anti back irrigation Protection whether EN pin is connected GND or VIN, under-voltage lockout (UVLO) to ensure that the device remains off unless there is a valid input voltage present, a precision resistor-programmable output current limit up to 3.5A.
Besides, the lower quiescent current as 40μA making this device ideal for portable battery-operated equipment.
The JTM9703 is available in SOT23-5 or SOP-8 package requiring minimum board space and smallest components.
二.产品特点(Features)
Adjustable Current Limiting up to 3.5A
Built-In (Typically 70mΩ) N-MOSFET
Reverse Current Flow Blocking (no body diode)
Output Can Be Forced Higher than Input (Off or
On State)
Low Supply Current :
--------40μA Typical at Switch on State
--------Less than 1μA Typical at Switch Off State
Guaranteed Continuous Load Current
-------JTM9703MR(SOT23-5):2.1A
-------JTM9703S(SOP-8):3A
Wide Input Voltage Ranges : 2V to 5.5V
Open-Drain Fault Flag Output
Hot Plug-In Application (Soft-Start)
1.7V Typical Under-Voltage Lockout (UVLO)
Thermal Shutdown Protection
Smallest SOT23-5 and SOP-8 Package
RoHS Compliant and 100% Lead (Pb)-Free
三,应用范围 (Applications)
USB 3G Datacard
USB Dongle
MiniPCI Accessories
LCD Monitor, LCD-TV
USB Power Module for ADSL
Information Appliance and Set-Top Box
Battery-Powered Equipment
Hot-Plug Power Supplies
ACPI Power Distribution
PCI Bus Power Switching
Motherboard & Notebook PCs
PC Card Hot Swap Application
四.下载产品资料PDF文档
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JTM9703 |
五,产品封装图 (Package)

Pin Name | Pin Function |
IN | Power Input Voltage. |
OUT | Output Voltage. |
GND | Ground. |
EN | Chip Enable (Active High). |
ISET | Current Limit Programming Input. |
FLAG | Open-Drain Fault Flag Output. |
六.电路原理图

七,功能概述
Supply Voltage ------------------------------------------------------------------------------------------------------- 6.5V
Chip Enable Input Voltage ---------------------------------------------------------------------------- −0.3V to 6.5V
Flag Voltage----------------------------------------------------------------------------------------------------------- 6.5V
Power Dissipation, PD @ TA = 25°C
SOT23-5---------------------------------------------------------------------------------------------------------------- 0.6W
SOP-8 ----------------------------------------------------------------------------------------------------------------- 0.95W
Package Thermal Resistance
SOT23-5------------------------------------------------------------------------------------------------------------200°C/W
SOP-8, θJA ---------------------------------------------------------------------------------------------------------104°C/W
Junction Temperature -----------------------------------------------------------------------------------------------125℃
Lead Temperature (Soldering, 10 sec.) ---------------------------------------------------------------------------260℃
Storage Temperature Range --------------------------------------------------------------------------- −65℃ to 150℃
ESD Susceptibility (Note 2)
Chip Enable Input Voltage ---------------------------------------------------------------------------- −0.3V to 6.5V
Flag Voltage----------------------------------------------------------------------------------------------------------- 6.5V
Power Dissipation, PD @ TA = 25°C
SOT23-5---------------------------------------------------------------------------------------------------------------- 0.6W
SOP-8 ----------------------------------------------------------------------------------------------------------------- 0.95W
Package Thermal Resistance
SOT23-5------------------------------------------------------------------------------------------------------------200°C/W
SOP-8, θJA ---------------------------------------------------------------------------------------------------------104°C/W
Junction Temperature -----------------------------------------------------------------------------------------------125℃
Lead Temperature (Soldering, 10 sec.) ---------------------------------------------------------------------------260℃
Storage Temperature Range --------------------------------------------------------------------------- −65℃ to 150℃
ESD Susceptibility (Note 2)
HBM (Human Body Mode) -----------------------------------------------------------------------------------------8kV
MM (Machine Mode) ---------------------------------------------------------------------------------------------- 800V
八,相关产品
型号 | 工作电压 | 电流限制 | 静态电流 | 截止电流 | 内阻 | 欠压锁定电压 | 抗静电电压 | 响应时间 | 封装 | 替代型号 |
JTM4610H/L | 2.4V-5.5V | 1A可调 | 15uA | 1uA | 80 moJTM | 1.8V | 2 KV | 2 uS | SOT-25 | AAT4610/SY6280/LPW5202/6/ |
EUP3510/1TCS9107/TT9107 | ||||||||||
UP7534/TT9707/TCS9607 | ||||||||||
JTM9703 | 2.0V-6.5V | 2.1A可调 | 40uA | 1uA | 70 moJTM | 1.7V | 8 KV | 4.6 mS | SOT-25 | AAT4610/SY6280/LPW5202/6 |
EUP3510/1/TCS9107/TT9107/ | ||||||||||
UP7534/TT9707/TCS9607 | ||||||||||
JTM9701 | 2.2V-6.0V | 1.1A | 23uA | 0.1uA | 100 moJTM | 1.8V | 6KV | 400uS | SOT-25 | RT9701 |
JTM9715A/C/D | 2.5V-5.5V | 2.1A/1.0A | 25uA | 0.1uA | 80 moJTM | 1.7V | 4 KV | 400 uS | SOT-25 | RT9715 |
0.65A | ||||||||||
JTM9711A | 2.5V-5.5V | 2.1A | 25uA | 0.1uA | 80 moJTM | 1.7V | 4 KV | 400 uS | SOT-25 | RT9711 |
型号 | 工作电压 | 通道 | 工作电流 | Divider 1 | Divider 2 | Divider 3 | 三星 | BC1.2 | CTIS YD/T | 封装 |
协议 | 协议 | 协议 | 协议 | DCP | 1591-2009 | |||||
JTM7901 | 4.5-5.5V | 单通道/最大2.4A | 140uA | 支持 | 支持 | 支持 | 支持 | 支持 | 支持 | SOT-25 |
JTM7902 | 4.5-5.5V | 2通道/最大2.0A | 140uA | 支持 | 支持 | 不支持 | 支持 | 支持 | 支持 | SOT-26 |
JTM7902A | 4.5-5.5V | 2通道/最大2.4A | 140uA | 不支持 | 不支持 | 支持 | 支持 | 支持 | 支持 | SOT-26 |
实时时钟日历IC | ||||||||||
型号 | 工作电压 | 工作电流 | 晶振频率 | 最大工作时钟频率 | RAM空间 | IC接口 | 工作温度范围 | 封装 | 代替型号 | |
JTM8563 | 1.8V-5.5V | 800uA/FE=1 | 32.768KHz | 400KHz | 16*8 | I2C接口 | -40~85度 | SOP8 | PCF8563 | |
MSOP8 | ||||||||||
JTM1302 | 1.3V-5.5V | 1.2mA/Vcc=5V | 32.768KHz | 2MHz/Vcc=5V | 31*8 | 串行3线接口 | -45~85度 | SOP8 | DS1302 | |
JTM1307 | 4.5V-5.5V | 0.2mA/Vcc=5V | 32.768KHz | 56*8 | 标准IIC接口 | -45~85度 | SOP8 | DS1307 | ||
我司的JTM8563/SOP8&MSOP8的优点是: | ||||||||||
1.超低功耗,采用限振幅振荡结构,抗干扰能力强,低启动工作电压。 | ||||||||||
2.宽工作电压范围:1.8~5.5V | ||||||||||
3.低休眠电流典型值为0.25μA | ||||||||||
4.具有世纪标志,可工作于1900-2099年 | ||||||||||
5. I2C总线频率最高达可400KHz | ||||||||||
6.时钟输出的频率可编程选择:32.768KHz/1024Hz/32Hz/1Hz 6.内含报警和定时器 | ||||||||||
7. 具备低电压检测和上电复位失效功能 | ||||||||||
8. 可直接替换原装的PCF8563 | ||||||||||
9. 可用于MID/MP3&MP4&MP5/手机/便携仪器/电信计费/考勤机/门禁等与计时有关的电子产品中。 | ||||||||||
我司的JTM1302/SOP8有如下优点: | ||||||||||
1. 抗电磁干扰达到2000V以上,符合家电行业应用标准。 | ||||||||||
2. I/O口不加上拉电阻也能正常工作。 | ||||||||||
3. 外接32.768KHZ,6PF的晶振,在晶振两边不加电容的情况下时钟精度可达到24小时误差不超过0.5S。 | ||||||||||
4. 晶振起振驱动能力强,不会出现中途停振。 | ||||||||||
5. 备用电池时钟保持电流小于0.3UA,一节3.3V40mah的纽扣锂电池能用十年以上 | ||||||||||
6. 解决千年虫问题。 | ||||||||||
7. 各脚ESD电压都达3000V以上。 | ||||||||||
8. 工业级,工作温度:40°C - +85°C。 | ||||||||||
我司的JTM1307有以下优点: | ||||||||||
1. 56字节无限次写入RAM。 | ||||||||||
2. 外接32.768KHZ,12.5PF的晶振,在晶振两边不加电容 的情况下时钟精度可达到24小时误差不超过0.5S。 | ||||||||||
3. 晶振起振驱动能力强,不会出现中途停振。 | ||||||||||
4. 自动掉电检测和电源电池自动切换电路。 | ||||||||||
5. 解决千年虫问题。 | ||||||||||
6. 具有对电池涓流充电功能。 | ||||||||||
7. 各脚ESD电压都达3000V以上。 | ||||||||||
8. 工业级工作温度:-40°C - +85°C。 |