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SG3842G, SG3842G2S, SG3842G2SZ

Table of contents:
Info of SG3842G
Info of SG3842G2S
Info of SG3842G2SZ

SG3842G, SG3842G2S, SG3842G2SZ Selling Leads, Datasheet

MFG:SG Package Cooled:SOP8 D/C:00+

SG3842G, SG3842G2S, SG3842G2SZ Datasheet download

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Part Number: SG3842G

MFG: SG

Package Cooled: SOP8

D/C: 00+

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SG3842G General Description

The SG348xG series of current-mode PWM controllers combines high performance with Green-mode power saving features. SG348xG controllers are fully pin-to-pin compatible with bipolar UC384x devices, but they have improved features and functionality. SG384xG series controllers are compatible with the BiCMOS fabrication process, enabling the use of low start-up current and operating currents. This feature further mproves power conversion efficiency. The minimalstart-up current has been reduced to 5uA, and the minimum operating current has been reduced to 5mA. Each SG384xG has a slew rate controlled high current totem pole output, ideally suited for driving a power MOSFET while keeping EMI low.

SG3842G Maximum Ratings

Parameter	Value	Symbol	Test Condition	Unit
Supply voltage	25 28	V_cc	Low impedance source Zener clamp	V
Zener current	10	Iz		mA
FB/SENSE terminal input voltage	-0.3 to 5.5V	V _IN	FB, SENSE	mW
Error amplifier sink current	10	I_SINK		MW
Power dissipation	800 400	P_d	at Ta<50°C DIP SOP	°C/W
Thermal resistance	82.5 141	R _j-a	Junction-air DIP SOP	W
Operating junction temperature	150	TJ	-	°C
ESD Capability, HBM model	-40 to 125		-	°C
Lead temperature (Soldering)	260 220	T_L	10 sec DIP 20 sec SOP	KV
ESD Capability, Machine model	200		-	V

SG3842G Features

384x series pin-to-pin compatible
Linearly decreasing PWM frequency
Burst-mode at low/zero load
5uA start-up current
5mA operating current
Vcc over voltage protection
Cycle-by-cycle current limiting
Zero cross-conduction
Slew rate controlled high current totem pole output
Fast current sense propagation delay
Under voltage lockout (UVLO) with hysteresis

SG3842G Connection Diagram

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