UC2823

所属类别：ACDC-和-DCDC-电源
产品名称：高速 PWM 控制器
厂商：TI
生产批号：09+
封装：16PDIP, 16SOIC, 20PLCC
库存状态：有库存
库存量：3500
最低订购量：1
详细资料：

Product Introduction

The PWM control IC UC1823 series is ideal for high frequencies for switching power supply applications. Special attention is given to minimize the propagation delay of the amplifier logic circuit by comparing and maximizing the bandwidth and slew rate of errors. The controller is designed for voltage mode systems that feed forward with either current mode or input voltage.

The protection circuitry includes a current-limit comparator, compatible with the TTL shut-off port, and soft-start pins, which will double the maximum duty cycle clamp. The logic is to completely lock the free operation of providing jitter and prohibit multiple pulses from being output. The 800mV hysteresis undervoltage lockout section ensures low start-up current.

characteristic

Suitable for voltage or current mode topologies
The actual operating frequency is 1.0MHz switch @
50ns propagation delay to output
Totem pole output high current (peak of 1.5A)
Wideband error amplifier
Fully locked logic dual-pulse suppression
The pulse is limited by the pulse current
Soft start/max. Duty cycle control
Undervoltage lockout and hysteresis
Low starting current (1.1 milliampere)
Sidebandgap Reference (5.1V ± 1% Included)

parameter

		UC2823
topology		Boost, buck, reverse, forward
Control method		Current mode
Duty Cycle (Max) (%)		100
Frequency (max) (kHz)		1000
On/off of undervoltage lockout threshold (5)		9.2/8.4
Pin/Pack		16PDIP，16SOIC，20PLCC
(#) Regulated output		One
Operating Temperature Range (°C)		-40 to 85

ICs related to UC2823 include:

Model	Manufacturers	lot number	encapsulation	illustrate
21033812823	HARTING	2018+	connector	Connectors, PCB Connectors, Bended, PA, Solderback Soldering (THR/SMC), Current Rating: 4A, Pins: 4, Copper Alloy, Gold Plated, Code: D Code
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ISL28230	INTERSIL	12+	MSOP	Dual micropower, low-drift, rail-to-rail input/output op-amps
ISL28233	Intersil	12+	8DFN	Dual micropower rail-to-rail input/output operational amplifiers for chopper stabilization
TMS320F28235PGFA	TI	10+11+		Hong Kong spot, imported original
UC2823DW	TI	10+11+		Hong Kong spot, imported original
ULQ2823A	ALLEGRO	00+	DIP-18	New inventory
PI74FCT162823TAC	TI	02+	TSSOP56	Brand new original
UC2823ADWTR	TI	08+	SOP-16	Original
UC2823N	UNITRODE	01+	DIP-16P	New original stock in stock
2SK2823	Toshiba	05+	N／A	N／A
UC2823BN	TI	00+	N／A	New inventory
CY74FCT162823ATPAC	CY	00+	TSSOP-56 (Ultra-thin Dense Feet)	Brand new original
TMS320F28234PTPS	TI	10+	LQFP	-
UCC28231	TI	11+	12USON, 14TSSOP	Advanced PWM controller for bus converters with a 3.3V precision voltage reference
UCC28230	TI	11+	12USON, 14TSSOP	Advanced PWM controller for bus converters with 5V precision voltage reference
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
ISL28236	INTERISL	07+	SOP8	ISL28236, 5MHz, Single and Dual Precision Rail-to-Rail Input-Output (RRIO) Op Amps (5MHz, Single/Dual Precision Rail-to-Rail Input-Output (RRIO) Op Amps)

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