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UC3843A

Category:ACDC- and -DCDC-power supply
Product Name:Current mode PWM controller
Manufacturers:TI
Production Batch Number:10+
Encapsulation:14SOIC, 8PDIP, 8SOIC
Stock Status:There is stock
Stock Quantity:30000
Minimum order quantity: 1
Details:

Product introduction

The control IC UC1842A/3A/4A/5A family is a pin-compatible family of improved versions of the UC3842/3/4/5-pin. Providing the necessary functions to control current mode switching power supplies, this family has the following improved features. The start-up current is guaranteed to be less than 0.5 mA. The oscillator discharge is trimmed to 8.3 milliamperes. In undervoltage lockout, the output stage can absorb a ratio of 1.2V to 5V_VCC's in the past is at least a decade of milliamperes.

characteristic

Optimize offline and DC-DC converters
Low start-up current" (
Side vibration discharge current
Automatic feed-forward compensation
The pulse is limited by the pulse current
Enhanced load response characteristics
Undervoltage lockout
Double pulse suppression
The totem pole outputs a large current
Internal fine-tuning bandgap reference
500kHz operation
Low voltage reverse osmosis error amplifier

parameter

			UC3843A
topology			Boost, buck, reverse, forward
Control method			Current mode
Duty cycle (max.) (%)			100
Frequency (max) (khertz)			450
On/Off of Undervoltage Lockout Threshold (5)			8.4/7.6
Pins/Packets			14SOIC，8PDIP，8SOIC
(#) Regulated output			One
Operating temperature range(°C)			0 to 70

andUC3843ARelated ICs are:

Model	Manufacturers	lot number	encapsulation	illustrate
KA3843A	Samsung	07+	DIP-8	Brand new original
UC3843AD1	ON	03+	SOP-8	Current mode PWM controller
UC3843ADR2	ON	03+	SOP-14	Current mode PWM controller
UC3843AD	TI	09+	SOP-14	Brand new original
UC3843AD8	TI	09+	SOP-8	Brand new original
UC3843ADTR	TI	09+	SOP-14	Brand new original
UC3843A	TI	10+	14SOIC, 8PDIP, 8SOIC	Current mode PWM controller
UC3843AD1R2	MIC	04+	TSSOP14
UC3843ADM-TR	NEC	07+ LF	TO126
UC3843AN	TI/BB	09+	SOP16

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TI brand product recommendation

Model	Manufacturers	lot number	encapsulation	illustrate
UC3842A	TI	10+	14SOIC, 16SOIC, 8PDIP, 8SOIC	Current mode PWM controller
UC3842	TI	10+	14SOIC, 8PDIP, 8SOIC	Current mode PWM controller
UC3841	TI	10+	18PDIP, 18SOIC	Programmable offline PWM controller
UC3827-2	TI	10+	24PDIP, 24SOIC	Current-down/voltage-fed push-pull PWM controller
UC3827-1	TI	10+	24PDIP, 24SOIC	Current-down/voltage-feed push-pull PWM controller
UC3825B	TI	09+	16PDIP, 16SOIC	High-speed PWM controller
UC3825A	TI	08+	16PDIP, 16SOIC, 20PLCC	High-speed PWM controller
UC3825	TI	09+	16PDIP, 16SOIC, 20PLCC	High-speed PWM controller
UC3824	TI	08+	16PDIP, 16SOIC	High-speed PWM controller
UC3823B	TI	09+	16PDIP, 16SOIC	High-speed PWM controller
UC3823A	TI	09+	16PDIP, 16SOIC	High-speed PWM controller
UC3823	TI	09+	16PDIP, 16SOIC, 20PLCC	High-speed PWM controller
UC3527B	TI	08+	16PDIP	Regulated pulse width modulator
UC3527A	TI	10+	16PDIP	Regulated pulse width modulator
UC3526A	TI	08+	18PDIP, 18SOIC, 20PLCC	Regulated pulse width modulator
UC3526	TI	09+	18PDIP, 18SOIC	Regulated pulse width modulator
UC3525B	TI	09+10+	16PDIP, 16SOIC	Regulated pulse width modulator
UC3525A	TI	10+	16PDIP, 16SOIC, 20PLCC	Regulated pulse width modulator
UC3524A	TI	10+	16PDIP, 16SOIC	Advanced regulated pulse width modulator
UC3524	TI	10+	16PDIP, 16SOIC	Advanced regulated pulse width modulator