BAV20W datasheet(6/24 Pages) LINER

Part #	BAV20W

Description	100VIN Micropower Isolated Flyback Converter with 150V/260mA Switch

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Manufacturer	LINER [Linear Technology]

Direct Link	http://www.linear.com

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LT8300

6

8300f

pin FuncTions

EN/UVLO (Pin 1): Enable/Undervoltage Lockout. The

EN/UVLO pin is used to enable the LT8300. Pull the pin

below 0.3V to shut down the LT8300. This pin has an ac-

curate 1.223V threshold and can be used to program a VIN

undervoltage lockout (UVLO) threshold using a resistor

divider from VIN to ground. A 2.5µA current hysteresis

allows the programming of VINUVLOhysteresis.Ifneither

function is used, tie this pin directly to VIN.

GND (Pin 2): Ground. Tie this pin directly to local ground

plane.

RFB (Pin 3): Input Pin for External Feedback Resistor.

Connect a resistor from this pin to the transformer pri-

mary SW pin. The ratio of the RFB resistor to the internal

trimmed 12.23k resistor, times the internal bandgap

reference, determines the output voltage (plus the effect

of any non-unity transformer turns ratio). Minimize trace

area at this pin.

SW (Pin 4): Drain of the 150V Internal DMOS Power

Switch. Minimize trace area at this pin to reduce EMI and

voltage spikes.

VIN (Pin 5): Input Supply. The VIN pin supplies current

to internal circuitry and serves as a reference voltage for

the feedback circuitry connected to the RFB pin. Locally

bypass this pin to ground with a capacitor.

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Manufacturer	Part #	Datasheet	Description
Analog Devices	LT8300	1Mb / 24P	100VIN Micropower Isolated Flyback Converter with 150V/260mA Switch
Linear Technology	LT8300	313Kb / 24P	100VIN Micropower Isolated Flyback Converter with 150V/260mA Switch
	LT8303	1Mb / 24P	100VIN Micropower Isolated Flyback Converter with 150V/450mA Switch
	LT8304	343Kb / 6P	Micropower No-Opto Isolated Flyback Converter with 150V/2A Switch
	LT8301	440Kb / 6P	42VIN Micropower Isolated Flyback Converter with 65V/1.2A Switch
	LT8301	269Kb / 24P	42VIN Micropower No-Opto Isolated Flyback Converter with 65V/1.2A Switch
Analog Devices	LT8301	1Mb / 24P	42VIN Micropower No-Opto Isolated Flyback Converter with 65V/1.2A Switch
Analog Devices	LT8302	1Mb / 26P	42VIN Micropower No-Opto Isolated Flyback Converter with 65V/3.6A Switch
Linear Technology	LT8302	420Kb / 26P	42VIN Micropower No-Opto Isolated Flyback Converter with 65V/3.6A Switch
Analog Devices	ADPL54203	925Kb / 34P	40VIN Micropower No-Opto Isolated Flyback Converter with 60V/3.4A Switch Rev. 0