LM3526M-H

Voltage - Supply (Vcc/Vdd):	Not Required
Base Part Number:	LM3526
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Operating Temperature:	-40°C ~ 125°C (TJ)
Fault Protection:	Current Limiting (Fixed), Over Temperature, UVLO
Features:	Status Flag
Input Type:	Non-Inverting
Rds On (Typ):	100 mOhm
Current - Output (Max):	500mA
Series:	--
Voltage - Load:	2.7 V ~ 5.5 V
Interface:	On/Off
Output Type:	P-Channel
Output Configuration:	High Side
Ratio - Input:Output:	1:2
Number of Outputs:	2
Switch Type:	USB Switch
Part Status:	Not For New Designs
Packaging:	Tube

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Power Management Integrated Circuit (PMIC) are very important components of electronic devices in today’s world. They are used for various purposes in electronic devices, for example charging batteries, controlling power and providing regulatory voltages. PMICs come in many different designs and each design focuses on a particular task or combination of tasks. In this article, we will be focusing on the LM3526M-H device, which is a power distribution switch, load driver.
The LM3526M-H device is a PMIC that provides an efficient system power distribution solution in power sensitive systems. It contains two independent power switches and six logic-controlled load drivers. The device provides over-current and over-temperature protection and is used in numerous portable and embedded designs.
The first switch is a high-side power switch with integrated N-Channel MOSFET. This switch can be used to turn on and off two or four voltage regulators. The second switch is a low-side power switch with integrated P-Channel MOSFET. This switch can be used to turn on and off three or four voltage regulators.
The six logic-controlled load drivers are used for controlling various PWM or bias outputs. The device also has an integrated charge pump and two additional voltage regulators. These regulators can provide additional power for peripherals and can be combined with the two power switches to provide an efficient system power distribution solution.
The LM3526M-H device also provides a range of protection features including over current protection, over temperature protection, soft start and brownout protection. Additionally, the device has an active low Shutdown pin and an active high Reset pin. The Reset pin is used to reset the device after a fault or power interruption.
The main applications of the LM3526M-H device are in portable and embedded systems. It is suitable for a wide range of portable products such as PDAs, cellular phones, portable media players and other high-speed and low-power applications.
In terms of the working principle of the LM3526M-H device, it uses an internal MOSFET which acts as a power switch. The power switch is connected to two voltage regulators, two additional voltage regulators, and two load drivers. The power switch is turned on and off using the integrated logic inputs which are used to control the on/off state of the power switch. When the power switch is on, the two voltage regulators supply power to the system while the two additional voltage regulators supply power to the peripheral devices. When the power switch is off, the load drivers put the load device in standby mode to conserve power.
In terms of the protection features of the LM3526M-H device, it provides over current protection, over temperature protection, soft start, and brownout protection. Additionally, the device has two pins - an active low Shutdown pin, and an active high Reset pin. The Shutdown pin can be used to shut down the device in the event of an overload or an over temperature condition. The Reset pin can be used to reset the device after a fault or power interruption.
Overall, the LM3526M-H device is a power management integrated circuit with two independent power switches, six logic-controlled load drivers, a charge pump, and two additional voltage regulators. It is used to provide a system power distribution solution in power sensitive systems and also provides protection features such as over current protection, over temperature protection, and brownout protection. It is suitable for a wide range of portable products such as PDAs, cellular phones, portable media players and other high-speed and low-power applications.

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