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PinoutSpecifications Symbol Parameter Value Unit VCC Supply Voltage (ICC < 50mA) (*) selflimit V IOUT Output Peak Pulse Current 1.5 A Analog Inputs & Outputs (6,7) -0.3 to 8 V Analog Inputs & Outputs (1,2,3,4,5,15,14 13) -0.3 to 6 V Ptot Power Dissi...

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SeekIC No. : 004389181 Detail

L4990: PinoutSpecifications Symbol Parameter Value Unit VCC Supply Voltage (ICC < 50mA) (*) selflimit V IOUT Output Peak Pulse Current 1.5 A Analog Inputs & Outputs (6,7) ...

L4990 Data Sheet

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Part Number:: L4990
Supply Ability:: 5000

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1~5000

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Negotiable

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Product Details

Description

Pinout

Connection Diagram

Specifications

Symbol	Parameter	Value	Unit
V_CC	Supply Voltage (I_CC < 50mA) (*)	selflimit	V
I_OUT	Output Peak Pulse Current	1.5	A
	Analog Inputs & Outputs (6,7)	-0.3 to 8	V
	Analog Inputs & Outputs (1,2,3,4,5,15,14 13)	-0.3 to 6	V
P_tot	Power Dissipation @ Tamb = 70°C	1	W
T_j	Junction Temperature, Operating Range	-25 to 125	°C
T_stg	Storage Temperature, Operating Range	-55 to 150	°C

Description

This primary controller I.CL4990 ., developed in BCD60II technology, has been designed to implement off line or DC-DC power supply applications using a fixed frequency current mode control.

Based on a standard current mode PWM controller L4990 includes some features as programmable soft start, IN/OUT synchronization, disable (to be used for over voltage protection and for power management), precise maximum Duty Cycle Control, 100ns (typ) leading edge blanking on current sense, pulse by pulse current limit and overcurrent protection with soft start intervention.

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L4990

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