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UC38428, UC3842A, UC3842ACD

Table of contents:
Info of UC38428
Info of UC3842A
Info of UC3842ACD

UC38428, UC3842A, UC3842ACD Selling Leads, Datasheet

MFG:ST Package Cooled:ST D/C:06+

UC38428, UC3842A, UC3842ACD Datasheet download

Five Points

Part Number: UC38428

MFG: ST

Package Cooled: ST

D/C: 06+

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UC38428 Parameters

UC3842A Features

Optimized for Off-line and DC to DC Converters
Low Start Up Current (<0.5mA)
Trimmed Oscillator Discharge Current
Automatic Feed Forward Compensation
Pulse-by-Pulse Current Limiting
Enhanced Load Response Characteristics
Under-Voltage Lockout With Hysteresis
Double Pulse Suppression
High Current Totem Pole Output
Internally Trimmed Bandgap Reference
500kHz Operation
Low RO Error Amp

UC38428 General Description

Current Mode PWM Controller

UC38428 Features

Optimized for Off-line and DC to DC Converters
Low Start Up Current (<0.5mA)
Trimmed Oscillator Discharge Current
Automatic Feed Forward Compensation
Pulse-by-Pulse Current Limiting
Enhanced Load Response Characteristics
Under-Voltage Lockout With Hysteresis
Double Pulse Suppression
High Current Totem Pole Output
Internally Trimmed Bandgap Reference
500kHz Operation
Low RO Error Amp

UC38428 Typical Application

Instruction Set

UC3842A Parameters

UC3842A Features

Optimized for Off-line and DC to DC Converters
Low Start Up Current (<0.5mA)
Trimmed Oscillator Discharge Current
Automatic Feed Forward Compensation
Pulse-by-Pulse Current Limiting
Enhanced Load Response Characteristics
Under-Voltage Lockout With Hysteresis
Double Pulse Suppression
High Current Totem Pole Output
Internally Trimmed Bandgap Reference
500kHz Operation
Low RO Error Amp

UC3842A General Description

Current Mode PWM Controller

UC3842A Maximum Ratings

Symbol	Parameter	Value	Unit
V_i	SupplyVoltage(lowimpedance source)	30	V
V_i	SupplyVoltage(Ii < 30mA)	SelfLimiting
I_O	OutputCurrent	±1	A
E_O	OutputEnergy (capacitive load)	5	J
	AnalogInputs (pins2, 3)	0.3to 5.5	V
	ErrorAmplifierOutput SinkCurrent	10	mA
P_tot	PowerDissipation at Tamb 25°C (Minidip)	1.25	W
P_tot	PowerDissipation at Tamb 25°C (SO8)	800	mW
T_stg	Storage Temperature Range	65to 150	°C
T_J	Junction OperatingTemperature	40to 150	°C
T_L	LeadTemperature (soldering 10s)	300	°C

UC3842A Features

Optimized for Off-line and DC to DC Converters
Low Start Up Current (<0.5mA)
Trimmed Oscillator Discharge Current
Automatic Feed Forward Compensation
Pulse-by-Pulse Current Limiting
Enhanced Load Response Characteristics
Under-Voltage Lockout With Hysteresis
Double Pulse Suppression
High Current Totem Pole Output
Internally Trimmed Bandgap Reference
500kHz Operation
Low RO Error Amp

UC3842A Typical Application

Instruction Set

UC3842A Connection Diagram

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