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AX3842, AX3842A, AX3842P

Table of contents:
Info of AX3842
Info of AX3842A
Info of AX3842P

AX3842, AX3842A, AX3842P Selling Leads, Datasheet

MFG:Hsmc Package Cooled:DIP-8 D/C:07+

AX3842, AX3842A, AX3842P Datasheet download

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Part Number: AX3842

MFG: Hsmc

Package Cooled: DIP-8

D/C: 07+

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AX3842P General Description

The AX3842 Series is high performance fixed frequency current mode controllers.That is specifically designed for Off Line and DC To DC converter applications offering the designer a costeffective solution with minimal external components.These integrated circuits feature a trimmed oscillator for precise duty cycle control.A temperature compensated reference, high gain error amplifier, current sensing compara-tor, and a high current totem pole output ideally suited for driving a power MOSFET. Also included are protective features consisting of input and reference undervoltage lockouts each with hysteresis, cycle-by-cycle current limiting, programmable output deadtime, and a latch for single pulse metering.

AX3842P Maximum Ratings

Symbol	Parameter	Value	Unit
V_i	Supply Voltage (low impedance source)	30	V
V_i	Supply Voltage (Ii<30mA)	Self Limiting
I_O	Output Current	±1	A
E_O	Output Energy (capacitive load)	5	uJ
	Analog Inputs (pin 2, 3)	-0.3 to 5.5	V
	Error Amplifier Output Sink Current	10	mA
P_tot	Power Dissipation at Tamb25oC	800	mW
T_stg	Storage Temperature Range	-65 to 150
T_J	Junction Operating Temperature	-40 to 150
T_L	Lead Temperature (soldering 10s)	300

AX3842P Features

• Trimmed Oscillator for Precise Frequency Control
• Oscillator Frequency Guaranteed at 250 kHz
• Current Mode Operation to 500 kHz
• Automatic Feed Forward Compensation
• Latching PWM for Cycle-By-Cycle Current Limiting
• Internally Trimmed Reference with Undervoltage Lockout
• High Current Totem Pole Output
• Undervoltage Lockout with Hysteresis
• Low Startup and Operating Current

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