UC2847

所属类别：ACDC-和-DCDC-电源
产品名称：电流模式 PWM 控制器
厂商：TI
生产批号：10+
封装：16PDIP, 16SOIC
库存状态：有库存
库存量：4480
最低订购量：1
详细资料：

Product Introduction

The control IC UC1846/7 family provides all the necessary functions to implement a fixed frequency, current-mode control scheme while maintaining a minimum number of external components. The superior performance of this technology improves line tuning, enhances load response characteristics, and makes it simpler and easier to control loop design. The inherent advantages of the topology include pulse through pulse current limiting functions, auto-correcting symmetrical push-pull converters, and "power modules" that can be parallelized while maintaining the current equal sharing.

The protection circuitry includes built-in undervoltage lockout and programmable current limiting except for soft-start function. A shutdown function is also available, which can be started or has an automatic full power off power restart or latch shutdown.

characteristic

Automatic feedforward compensation
Programmable pulse-by-pulse current limiting
Automatically corrects symmetrical push-pull configurations
Enhanced load response characteristics
Combat capability of modular power systems in parallel
Wide differential current-sense amplifier common mode range
Dual pulse suppression
500mA current (peak) totem pole output
± 1% bandgap reference
Undervoltage locking
Soft starting capability
Close the terminal
500kHz operation

parameter

	UC2847
topology	Boost, flyback, forward, full-bridge, half-bridge, push-to-pull
Control method	Current mode
Duty Cycle (Max) (%)	50
Frequency (max) (kHz)	450
On/off of undervoltage lockout threshold (5)	7.7/6.95
Pin/Pack	16PDIP，16SOIC
(#) Regulated output	2
Operating Temperature Range (°C)	-40 to 85

The ICs associated with UC2847 include:

Model	Manufacturers	lot number	encapsulation	illustrate
1728470000	Weidmüller Interface GmbH & Co. KG	218+	connector	1728470000 S2L 3.5/6/90F 3.5SN OR
LTC2847IUHF#PBF	Linear Technology	15+	SMD	LTC2847IUHF#PBF
LTC2847IUHF	Linear Technology	15+	SMD	LTC2847IUHF
LTC2847CUHF#PBF	Linear Technology	15+	SMD	LTC2847CUHF#PBF
LTC2847CUHF	Linear Technology	15+	SMD	LTC2847CUHF
V6D1D66B-00000-000/28471?	LITTELFUSE	11+	DIP	connector
UC2847DW	UNITRODE	00+	SOP-16P	New original stock in stock
2SK2847	Toshiba	04+	TO-3P	900V,8A,85W
UC2847N	UNITRODE	00+	DIP-16P	New original stock in stock
UC2847	TI	10+	16PDIP, 16SOIC	Current-mode PWM controller
ISL28478	INTERISL	08+	SOP	ISL28478, Dual and Quad Micropower Single Supply Rail-to-Rail Input and Output (RRIO) Op-Amp
ISL28476	INTERISL	09+	SOT	ISL28476, Dual and Quad Micropower Single Supply Rail-to-Rail Input and Output (RRIO) Precision Op Amp (Dual/Quad Channel, Micropower, Single Supply, Rail Pair)
ISL28470	INTERISL	09+	QSOP28	ISL28470, quadruple instrument amplifier

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TI brand product recommendation

Model	Manufacturers	lot number	encapsulation	illustrate
UC2846	TI	08+	16PDIP, 16SOIC, 20PLCC	Current-mode PWM controller
UC2845AQ	TI	09+	14SOIC, 8SOIC	Automotive current-mode PWM controllers
UC2845A	TI	10+	14SOIC, 16SOIC, 8PDIP, 8SOIC	Current-mode PWM controller
UC2845	TI	10+	14SOIC, 8PDIP, 8SOIC	Current-mode PWM controller
UC2844A	TI	09+	14SOIC, 8PDIP, 8SOIC	Current-mode PWM controller
UC2844	TI	09+	14SOIC, 8PDIP, 8SOIC	Current-mode PWM controller
UC2843AQ	TI	08+	14SOIC, 8SOIC	Automotive current-mode PWM controllers
UC2843A-Q1	TI	10+	8SOIC	Automotive current-mode PWM controllers
UC2843A	TI	08+	14SOIC, 20PLCC, 8PDIP, 8SOIC	Current-mode PWM controller
UC2843	TI	10+	14SOIC, 8SOIC	Automotive current-mode PWM controllers
UC2842AQ	TI	09+10+	14SOIC, 8SOIC	Automotive current-mode PWM controllers
UC2842	TI	09+10+	14SOIC, 8PDIP, 8SOIC	Current-mode PWM controller
UC2841	TI	09+	18PDIP, 18SOIC	Programmable offline PWM controller
UC2827-2	TI	10+	24SOIC	Drop current/voltage feed push-pull PWM controller
UC2827-1	TI	10+	24PDIP, 24SOIC	Drop current/voltage feed push-pull PWM controller
UC2825B	TI	09+	16PDIP, 16SOIC	High-speed PWM controller
UC2825A-Q1	TI	10+	16SOIC	Automotive-class high-speed PWM controllers
UC2825A	TI	09+	16PDIP, 16SOIC, 20PLCC	High-speed PWM controller
UC2825	TI	09+	16PDIP, 16SOIC, 20PLCC	High-speed PWM controller
UC2824	TI	09+10+	16PDIP, 16SOIC	High-speed PWM controller