器件名称: U2642B-FP
功能描述: Intermittent- and Wipe/Wash Control for Wiper Systems
文件大小: 178.05KB 共10页
简 介:U2642B
Intermittent- and Wipe/Wash Control for Wiper Systems
Description
With the U264xB, TEMIC Semiconductors developed a family of intermittent- and wipe/wash control circuits for windshield or backlite wiper systems with identical basic functions. The circuit design provides the possibility to generate ”x” versions using different metallization masks. Thus, it is easy to verify a broad range of time sequences which can be set independently of each other.
Features
D Relay activation can be controlled by a limit switch of
the wiper motor or by a fixed activation period for systems without limit switch
D Relay activation: D Interval pause: D After wiping: D Pre-wash delay:
0.64 s 10 s 5.8 s 0.91 s
D D D D D
Debounced input stages Enable/disable of pre-wash delay by program pin Polarity of WIWA: VBatt Polarity of INT: VBatt Relay output is protected with a clamping diode
D Wipe/wash mode with priority D Protected in accordance to ISO/TR 7637–1 D EMC with intergrated filters
Ordering Information
Extended Type Number U2642B U2642B–FP Package DIP8 SO8 Remarks
Block Diagram
VS OSC
Voltage stabilization and POR
Oscillator
INT 21 V WIWA 21 V LS 21 V PP 21 V Input comparator Logic Loaddump detection and output control Open-collector relay driver REL 21 V
GND
13944
Figure 1.
TELEFUNKEN Semiconductors Rev. A2, 02-Dec-97
1 (10)
U2642B
Pin Configuration
Pin 1 2 3 4 5 6 7 8 Symbol INT WIWA LS PP GND REL VS OSC Function Intermittent input Wipe/wash (WIWA) input Limit swit……
