UC2842

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：09+10+
封装：14SOIC, 8PDIP, 8SOIC
库存状态：有库存
库存量：2000
最低订购量：1
详细资料：

Product Introduction

The UC1842/3/4/5 family provides the necessary features to achieve a fixed-frequency current mode control scheme with a minimum number of external components, either off-line or DC-to-DC. The internal implementation circuitry includes undervoltage lockout with a starting current of less than 1 mA, a precise reference accuracy fine-tuning at the input of the wrong amplifier, logic registration to ensure lockout operation, PWM comparator, while providing current limit control, and a high peak current of the source or sink of the totem pole output stage design. The output stage, driving N-channel MOSFETs are suitable for low off.

The difference between this family member is the undervoltage lockout threshold and the maximum duty cycle range.

characteristic

Optimize offline and DC-to-DC converters
低启动电流“（
Automatic feeding ForwardCompensation
The pulse is limited by the pulse current
Enhanced load response characteristics
Undervoltage locking hysteresis
Dual pulse suppression
The totem pole outputs a large current
Internal fine-tuning bandgap datum
500 - kHz operation

parameter

		UC2842
topology		Boost, reverse, forward
Control method		Current mode
Duty Cycle (Max) (%)		100
Frequency (max) (kHz)		450
On/off of undervoltage lockout threshold (5)		16/10
Pin/Pack		14SOIC，8PDIP，8SOIC
(#) Regulated output		One
Operating Temperature Range (°C)		-40 to 85

The ICs associated with UC2842 include:

Model	Manufacturers	lot number	encapsulation	illustrate
UC2842NG4	TI	10+	N/A	Brand new original import, Hong Kong spot
LM2842MKX	NSC	10+	SOT23-6	600 mAh 42V input step-down DC/DC regulator
LM2842MK	NSC	10+	TSOT	600 mAh 42V input step-down DC/DC regulator
LM2842XMK-ADJ	NSC	10+	SMDDIP	600 mAh 42V input step-down DC/DC regulator
LM2842XMKX-ADJ	NSC	10+	TS0T-6L	600 mAh 42V input step-down DC/DC regulator
LM2842YMKX-ADJL	NSC	10+	TS0T-6L	600 mAh 42V input step-down DC/DC regulator
LM2842YMKX-ADJ	NSC	10+	TS0T-6L	600 mAh 42V input step-down DC/DC regulator
LM2842YMK-ADJ	NSC	10+	TS0T-6L	600 mAh 42V input step-down DC/DC regulator
LM2842YMK-ADJL	NSC	10+	TS0T-6L	600 mAh 42V input step-down DC/DC regulator
LM2842XMK-ADJL	NSC	11+	SOT23-6	600 mAh up to 42V input step-down DC/DC regulator
UC2842A	ST	9707	DIP-8P	Original in stock
UC2842ADW	TI	07+	SOP-16	Brand new original
UC2842BNG	ON	07+	DIP-8	Brand new original
2842B	ON	03+	SOP-8	New inventory
CS2842ASL	ON	03+	DIP-8	New inventory
UC2842N	TI	07+	DIP-8	Current PWM controller
UC2842AQ	TI	09+10+	14SOIC, 8SOIC	Automotive current-mode PWM controllers
UC2842	TI	09+10+	14SOIC, 8PDIP, 8SOIC	Current-mode PWM controller
TL2842B	TI	09+	14SOIC, 8PDIP, 8SOIC	TL284xB, TL384xB
TL2842	TI	09+	14SOIC, 8PDIP, 8SOIC	Current-mode PWM controller

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