LM3526M-L

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): Power Distribution Switches, Load DriversPower management integrated circuits (PMICs) are a family of integrated circuits (ICs) used in different aspects of power management, such as distribution, routing, conversion, and control. PMICs can be used for a variety of applications such as motor and motor driver control, motor control, load sensing and current control, and automotive power management. PMICs can also be used for LED drivers, motor speed controllers, and other power converted systems.One type of PMIC is the power switching type. It is a family of ICs that provide the ability to manage and control the power distribution between multiple power sources. This type of PMIC includes power switchers, MOSFET drivers, low-side switches, power multiplexers and active ORing switches. They are typically used in automotive and industrial applications. Another type of PMIC is the load driver type. It is a family of ICs used to help drive heavier loads and provide maximum power efficiency. This type of PMIC includes transistor drivers, motor drivers, DC motor controllers, and motor drivers for inverters and single switches.The LM3526M-L is an example of a load driver PMIC. It is a 3-channel, 2-phase N-MOSFET driver with synchronous rectification control. It is used to provide flexible power management and protection to systems like cell phone chargers, notebook adapters, air conditioners, and LCD TV backlight inverters.Working Principle The LM3526M-L uses a current mode control structure to provide precise current regulation and efficient thermal performance. It is a full-bridge, high-current driver with both low-side and high-side Gate drivers. The LM3526M-L uses a pulse-width modulation (PWM) input signal and a control loop with a current sense amplifier to regulate output current. It has an internal protection circuit to ensure reliable protection against over-voltage, over-temperature, over-current, and short-circuit conditions.The LM3526M-L provides a simple adjustment to its output current limit, via a voltage divider from the control voltage pin (VCTRL). This voltage divider is buffered by an internal transconductance stage to ensure high stability without external components. The LM3526M-L also provides a current fold-back function to protect against over-load conditions by reducing its output current fold-back limit.Applications The LM3526M-L is suitable for many different applications, including automotive systems, power conversion systems, television sets, and battery-powered and standby applications. It is an ideal driver IC for off-line converters, mid- and high-power DC-DC converters, single-ended primary-inductor converters, hard-switched flyback converters, and other such applications. The LM3526M-L is available in an 8-pin SOIC, 10-pin TSSOP, and 12-pin TQFN package which ensures efficient thermal and mechanical performance. With its comprehensive protection features, high-efficiency multiplierless PWM, and synchronous rectification control features, the LM3526M-L is ideal for a variety of off-line and automotive applications.

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