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UC2825A

Category:ACDC- and -DCDC-power supply
Product Name:High-speed PWM controller
Manufacturers:TI
Production Batch Number:09+
Encapsulation:16PDIP, 16SOIC, 20PLCC
Stock Status:There is stock
Stock Quantity:2560
Minimum order quantity: 1
Details:

Product introduction

The UC3823A with UC3823B and UC3825A with UC3825B PWM controller series are improved standard UC3823 with UC3825 family versions. The number of circuit blocks that have been made with the performance enhancement. The error amplifier has a gain-bandwidth product of 12 MHz and an input offset voltage of 2 millivolts. The current limit threshold is guaranteed to a tolerance of 5%. The discharge current of the oscillator is specified as 10 mA for accurate dead time control. Frequency accuracy increased to 6%. The start-up supply current, typically 100μA, is ideal for off-line applications. Output drivers are redesigned to actively sink during UVLO without current starting current specification charges. In addition, the peak current capability of 2 per output is in transition.

characteristic

Improved PWM for UC3823/UC3825 versions
Suitable for voltage-mode or current-mode control methods
In practice, the switching frequency is 1 MHz
50 - ns propagation delay to output
High-current dual totem (peak of 2) pole output
Side vibration discharge current
Low 100μA start-up current
The pulse passes through a pulsed current limiting comparator
The latch is restarted with a full-cycle overcurrent comparator

parameter

		UC2825A
topology		Boost, flyback, forward, full bridge, half bridge, push and pull
Control method		Current mode
Duty cycle (max.) (%)		50
Frequency (max) (khertz)		1000
On/Off of Undervoltage Lockout Threshold (5)		16/10
Pins/Packets		16PDIP，16SOIC，20PLCC
(#) Regulated output		2
Operating temperature range(°C)		-40 to 85

andUC2825ARelated ICs are:

Model	Manufacturers	lot number	encapsulation	illustrate
UC2825ACDW	TI	01+	SOP-16	Brand new original
UC2825A-Q1	TI	10+	16SOIC	Automotive high-speed PWM controller
UC2825A	TI	09+	16PDIP, 16SOIC, 20PLCC	High-speed PWM controller

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TI brand product recommendation

Model	Manufacturers	lot number	encapsulation	illustrate
UC2825	TI	09+	16PDIP, 16SOIC, 20PLCC	High-speed PWM controller
UC2824	TI	09+10+	16PDIP, 16SOIC	High-speed PWM controller
UC2823B	TI	10+	16PDIP, 16SOIC	High-speed PWM controller
UC2823A	TI	09+	16PDIP, 16SOIC, 20PLCC	High-speed PWM controller
UC2823	TI	09+	16PDIP, 16SOIC, 20PLCC	High-speed PWM controller
UC28025	TI	13+	16PDIP, 16SOIC	Economical high-speed PWM controller
UC28023	TI	09+08+	16PDIP, 16SOIC	Economical high-speed PWM controller
UC2527A	TI	09+	16PDIP	Regulated pulse width modulator
UC2526A	TI	10+	18PDIP, 18SOIC, 20PLCC	Regulated pulse width modulator
UC2526	TI	09+	18PDIP	Regulated pulse width modulator
UC2525B	TI	07+	16SOIC	Regulated pulse width modulator
UC2525A	TI	10+	16PDIP, 16SOIC	Regulated pulse width modulator
UC2524A	TI	10+	16PDIP, 16SOIC	Advanced regulated pulse width modulator
UC2524	TI	08+	16PDIP, 16SOIC	Advanced regulated pulse width modulator
UC1846-SP	TI	10+	16CDIP, 20LCCC	Current mode PWM controller
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TL494	TI	11+	16PDIP, 16SO, 16SOIC, 16SSOP, 16TSSOP	Pulse width modulation (PWM) control circuitry
TL3845B	TI	10+	14SOIC, 8PDIP, 8SOIC	TL284xB, TL384xB
TL3845	TI	09+	14SOIC, 8PDIP, 8SOIC	Current mode PWM controller