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QM48T45010-PDATG PDF预览

QM48T45010-PDATG

更新时间： 2024-02-26 13:56:37
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BEL /
页数 文件大小 规格书
37页 644K
描述
DC-DC Regulated Power Supply Module, 1 Output, Hybrid,

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QM48T45010-PDATG 技术参数

是否Rohs认证：符合生命周期：Active
包装说明：,Reach Compliance Code：compliant
ECCN代码：EAR99风险等级：5.73
Is Samacsys：N模拟集成电路 - 其他类型：DC-DC REGULATED POWER SUPPLY MODULE
最大输入电压：75 V最小输入电压：36 V
标称输入电压：48 VJESD-30 代码：R-XDMA-P8
功能数量：1输出次数：1
端子数量：8最大输出电压：1.1 V
最小输出电压：0.9 V标称输出电压：1 V
封装主体材料：UNSPECIFIED封装形状：RECTANGULAR
封装形式：MICROELECTRONIC ASSEMBLY峰值回流温度（摄氏度）：NOT SPECIFIED
认证状态：Not Qualified表面贴装：NO
技术：HYBRID端子形式：PIN/PEG
端子位置：DUAL处于峰值回流温度下的最长时间：NOT SPECIFIED
微调/可调输出：YESBase Number Matches：1

QM48T45010-PDATG 数据手册

 浏览型号QM48T45010-PDATG的Datasheet PDF文件第1页浏览型号QM48T45010-PDATG的Datasheet PDF文件第2页浏览型号QM48T45010-PDATG的Datasheet PDF文件第4页浏览型号QM48T45010-PDATG的Datasheet PDF文件第5页浏览型号QM48T45010-PDATG的Datasheet PDF文件第6页浏览型号QM48T45010-PDATG的Datasheet PDF文件第7页 
QM48 Series - 45A  
Data Sheet  
age of ≤ 0.8 V. An external voltage source of ±20 V max.  
may be connected directly to the ON/OFF input, in which  
case it should be capable of sourcing or sinking (depending  
on the signal polarity) up to 1 mA. See the Start-up Informa-  
tion section for system timing waveforms associated with  
use of the ON/OFF pin.  
Operation  
Input and Output Impedance  
These power converters have been designed to be stable  
with no external capacitors when used in low inductance in-  
put and output circuits.  
Remote Sense (Pins 5 and 7)  
However, in many applications, the inductance associated  
with the distribution from the power source to the input of the  
converter can affect the stability of the converter. The addi-  
tion of a 33 µF electrolytic capacitor with an ESR < 1 Ω  
across the input helps ensure stability of the converter. In  
many applications, the user has to use decoupling capaci-  
tance at the load. The power converter will exhibit stable op-  
eration with external load capacitance up to 40,000 µF on  
3.3 – 1.0 V outputs.  
The remote sense feature of the converter compensates for  
voltage drops occurring between the output pins of the con-  
verter and the load. The SENSE(-) (Pin 5) and SENSE(+)  
(Pin 7) pins should be connected at the load or at the point  
where regulation is required (see Fig. B).  
TM Series  
Rw  
QmaX  
Vout (+)  
Vin (+)  
ON/OFF  
Vin (-)  
Converter  
100  
SENSE (+)  
(Top View)  
ON/OFF (Pin 2)  
Rload  
TRIM  
Vin  
SENSE (-)  
10  
The ON/OFF pin is used to turn the power converter on or  
off remotely via a system signal. There are two remote con-  
trol options available, positive logic and negative logic and  
both are referenced to Vin(-). Typical connections are shown  
in Fig. A.  
Vout (-)  
Rw  
Fig. B: Remote sense circuit configuration.  
TM Series  
QmaX  
Vin (+)  
ON/OFF  
Vin (-)  
Vout (+)  
SENSE (+)  
TRIM  
If remote sensing is not required, the SENSE(-) pin must be  
connected to the Vout(-) pin (Pin 4), and the SENSE(+) pin  
must be connected to the Vout(+) pin (Pin 8) to ensure the  
converter will regulate at the specified output voltage. If  
these connections are not made, the converter will deliver an  
output voltage that is slightly higher than the specified value.  
Converter  
(Top View)  
Rload  
Vin  
SENSE (-)  
Vout (-)  
CONTROL  
INPUT  
Because the sense leads carry minimal current, large traces  
on the end-user board are not required. However, sense  
traces should be located close to a ground plane to minimize  
system noise and insure optimum performance. When wiring  
discretely, twisted pair wires should be used to connect the  
sense lines to the load to reduce susceptibility to noise.  
Fig. A: Circuit configuration for ON/OFF function.  
The positive logic version turns on when the ON/OFF pin is  
at logic high and turns off when at logic low. The converter is  
on when the ON/OFF pin is left open.  
The converter’s output over-voltage protection (OVP) senses  
the voltage across Vout(+) and Vout(-), and not across the  
sense lines, so the resistance (and resulting voltage drop)  
between the output pins of the converter and the load should  
be minimized to prevent unwanted triggering of the OVP.  
The negative logic version turns on when the pin is at logic  
low and turns off when the pin is at logic high. The ON/OFF  
pin can be hard wired directly to Vin(-) to enable automatic  
power up of the converter without the need of an external  
control signal.  
When utilizing the remote sense feature, care must be taken  
not to exceed the maximum allowable output power capabil-  
ity of the converter, equal to the product of the nominal out-  
put voltage and the allowable output current for the given  
conditions.  
ON/OFF pin is internally pulled-up to 5 V through a resistor.  
A mechanical switch, open collector transistor, or FET can  
be used to drive the input of the ON/OFF pin. The device  
must be capable of sinking up to 0.2 mA at a low level volt-  
QM48T45 Family DS Ver 3 03-27-03  
USA Toll Free 866 WOW-didt  
Page 3 of 37  
1234567...37

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