U6432B_06 ATMEL [ATMEL Corporation], U6432B_06 Datasheet

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U6432B_06

Manufacturer Part Number
U6432B_06
Description
Low-power Flasher IC with 18-mOHM Shunt
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
Features
1. Description
The U6432B is an advanced automotive flasher IC which provides low standby cur-
rent. Its basic function is equal to Atmel’s flasher IC U6043B but low current
consumption and frequency doubling disabling make outstanding differences.
Temperature and Voltage Compensated Frequency
Warning Indication of Lamp Failure by Means of Frequency Doubling only in Direction
Mode
Voltage Dependence of the Car Indicator Lamps also Compensated for Lamp Failure
Relay Output with High Current-carrying Capacity and Low Saturation Voltage
Load-dump Protection
Minimum Lamp Load for Flasher Operation
Low Susceptibility to EMI
Extremely Low Standby Current of 10 µA
Protection According to ISO/TR 7637/1 Level 4 with External Capacitor (C
1W
2
)
Low-power
Flasher IC with
18-m Shunt
U6432B
4725C–AUTO–10/06

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U6432B_06 Summary of contents

Page 1

Features • Temperature and Voltage Compensated Frequency • Warning Indication of Lamp Failure by Means of Frequency Doubling only in Direction Mode • Voltage Dependence of the Car Indicator Lamps also Compensated for Lamp Failure • Relay Output with High ...

Page 2

Block Diagram Figure 2-1. Car Flasher Application 4.7 µ > U6432B ...

Page 3

Pin Configuration Figure 3-1. Pinning Table 3-1. Pin Description Pin Symbol Function 1 GND IC ground 2 VS Supply voltage 3 REL Relay driver 4 OSC Oscillator 5 OSC Oscillator 6 VS Supply voltage 7 LD Lamp failure detection ...

Page 4

Functional Description 4.1 Pin 1, GND The U6432B is protected against damage in case of battery reversal via resistor R ground (–31). An integrated protection circuit together with external resistances R the current pulses in the IC. 4.2 Pin ...

Page 5

Control Signal Threshold 2 (15-mV Comparator) A voltage drop at the shunt resistor R quency doubling mode. If the voltage drop decreases to a value below V This can be achieved either with a switch which bypasses the shunt ...

Page 6

Absolute Maximum Ratings Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions beyond those indicated ...

Page 7

Ordering Information Extended Type Number U6432B-MFPY U6432B-MFPG3Y 9. Package Information Package Dimensions in mm 0.4 1.27 Drawing-No.: 6.541-5031.01-4 Issue: 1; 15.08.06 4725C–AUTO–10/06 Package Remarks SO8 Tubed, Pb-free SO8 Taped and reeled, Pb-free 4.9 ±0.1 3. ...

Page 8

Revision History Please note that the following page numbers referred to in this section refer to the specific revision mentioned, not to this document. Revision No. 4725C-AUTO-10/06 4725B-AUTO-08/05 U6432B 8 History Put datasheet in a new template Pb-free logo ...

Page 9

Atmel Corporation 2325 Orchard Parkway San Jose, CA 95131, USA Tel: 1(408) 441-0311 Fax: 1(408) 487-2600 Regional Headquarters Europe Atmel Sarl Route des Arsenaux 41 Case Postale 80 CH-1705 Fribourg Switzerland Tel: (41) 26-426-5555 Fax: (41) 26-426-5500 Asia Room 1219 ...

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