LTC1041 BANG-BANG Controller

The LTC®1041 is a monolithic CMOS BANG-BANG controller manufactured using linear Technology’s enhanced LTCMOS™ silicon gate process. BANG-BANG loops are characterized by turning the control element fully ON or fully OFF to regulate the average value of the parameter to be controlled. The SET POINT input determines the average control value and the DELTA input sets the deadband. The deadband is always 2 x DELTA and is centered around the SET POINT. Independent control of the SET POINT and deadband, with no interaction, is made possible by the unique sampling input structure of the LTC1041.

An external RC connected to the OSC pin sets the sampling rate. At the start of each sample, internal power to the analog section is switched on for approximately 80µs. During this time, the analog inputs are sampled and compared. After the comparison is complete, power is switched off. This achieves extremely low average power consumption at low sampling rates. CMOS logic holds the output continuously while consuming virtually no power.

To keep system power at an absolute minimum, a switched power output (VP-P) is provided. External loads, such as bridge networks and resistive dividers, can be driven by this switched output.

The output logic sense (i.e., ON = V+) can be reversed (i.e., ON = GND) by interchanging the VIN and SET POINT inputs. This has no other effect on the operation of the LTC1041

产品特点 Features

Micropower 1.5µW (1 Sample/Second)
Wide Supply Range 2.8V to 16V
High Accuracy
Guaranteed SET POINT Error ±0.5mV Max
Guaranteed Deadband ±0.1% of Value Max
Wide Input Voltage Range V+ to Ground
TTL Outputs with 5V Supply
Two Independent Ground-Referred Control Inputs
Small Size 8-Pin SO

参数

应用

Temperature Control (Thermostats)
Motor Speed Control
Battery Charger
Any ON-OFF Control Loop

典型应用图

LTC1041 订购信息和价格参考Package Variations and Pricing

器件型号	封装	引脚	温度	价格 (以 1 ~ 99 片为批量)	价格 (以 1000 片为批量) *
LTC1041CN8	PDIP	8	C	$2.25	$1.80
LTC1041CN8#PBF	PDIP	8	C	$2.25	$1.80
LTC1041CS8	SO	8	C	$2.75	$2.35
LTC1041CS8#PBF	SO	8	C	$2.75	$2.35
LTC1041CS8#TR	SO	8	C		$2.41
LTC1041CS8#TRPBF	SO	8	C		$2.41
LTC1041MJ8		0	M		$51.69
LTC1041MJ8/883	CERDIP	8	M

LTC1041 数据手册及相关资料下载

数据手册(英文) : LTC1041 - BANG-BANG Controller.PDF
应用指南 (英文) : AN23 - Micropower Circuits for Signal Conditioning.PDF
可靠性数据 : R102 Reliability Data .PDF