L5991A

primary controller I.C, 8 V, 1.5 A, DIP

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Price:: US $1.00~1.00 / piece [Get Latest Price]

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Qty (lots)	Price/lot
1 ~ 1000 :	1.00 / Piece

PartNumber:: L5991A

Brand:: STMicroelectronics - ST | Pack: DIP | D/C: 04+

Availability:: Supply Ability: 4/Day Can Ship Immediately
Delivery: 10-15 Business Days (ships out within 3 Business days)

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Total Price:: US $0

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Products Upload time: 2013-06-17

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Part Number:L5991A
US $1.00 - 1.00
Quantity:

piece

Product Summary

The L5991A is a primary controller I.C., developed in BCD60II technology, which 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 this device includes some features such 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 leading edge blanking on current sense, pulse by pulse current limit, overcurrent protection with soft start intervention, and Standby function for oscillator frequency reduction when the converter is lightly loaded.

Parametrics

L5991A absolute maximum ratings: (1)Output Peak Pulse Current: 1.5 A; (2)Analog Inputs & Outputs (6,7): -0.3 to 8 V; (3)Analog Inputs & Outputs (1,2,3,4,5,15,14, 13, 16): -0.3 to 6 V; (4)Junction Temperature, Operating Range: -40 to 150℃; (5)Storage Temperature, Operating Range: -55 to 150℃.

Features

L5991A features: (1)current-mode control pwm; (2)switching frequency to 1MHz; (3)low start-up current; (4)programmable duty cycle; (5)standby function; (6)pwm uvlo with hysteresis; (7)in/out syschronization; (8)latched disable; (9)internal 100ns leading edge blanking of current sense.