ATA6140. Flasher Application Module. Application Note. ATA Flasher Application Module. 1. Description
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1 - Flasher Application Module 1. Description Figure 1-1. Flasher Application Module Flasher Application Module Application Note The module version presented here is one of the connection options described in the datasheet for (for more information please refer to the datasheet). Application 1 (see Figure 1-2 on page 2): 12V version Turn signal and hazard switches configured for switch to GND mode In order to facilitate the use of Atmel's versatile 2-relay flasher,, a design board for the typical application has been developed. The subsequent drawings show the schematic with the components values, and the PCB layout including the component placement. All resistors except R2 are size 1206 with 0.125W maximum power dissipation, tolerance 5%, maximum voltage 200V, and temperature coefficient < ±200 ppm/k. R2 is size 1210 with at least 0.3W maximum power dissipation; depending on availability, R2 can be replaced by two size Ω resistors (0.25W maximum power dissipation) in parallel. All ceramic capacitors are X7R material, size 0805, 50V maximum voltage, and 5% tolerance. Rev.
2 Figure 1-2. Application 1: 12V Version, Turn Signal Switches to GND, Hazard Switch to GND Ign 3 x 1.3k 24V nc 10 µf/63v IC Ground Integrated oscillator Comp Power on and 5V regulator Bias current Batt Current monitoring and short circuit protection Battery sense Measure input 18 mω Batt Haz TS1G 10k 36k POR Charge pump Output stages 1.5k Output right Ign Logic Output left TS2G 36k Over-, undervoltage and load dump detection Comp Test pin, nc IC-Ground LED LED 560Ω/0.5W 2
3 Figure 1-3. Schematic of Module Application 1 R3 HZD J3 GND J4 R2 560Ω R4 10 kω C2 10 µf C3 47 nf V BAT J7 C1 47 nf U1 SO16 Lin J8 C5 R15 36 kω input left battery C6 R6 36 kω input right battery battery R kω measure Rin J9 R9 R10 J2 IGN J11 J10 Shunt Rel12 Rel11 J6 REL REL J5 Rout Lout Table 1-1. Module Application 1 Pin Description Pin Symbol Function a IGN Ignition b ROUT Output R c LOUT Output L d VBAT Battery e LIN L f RIN R g GND Ground h HZD Hazard 3
4 Figure 1-4. Module Application 1, Component Placement and Layout. Top Side, Top View; Actual Size: 37 mm 24 mm Figure 1-5. Module Application 1, Component Placement. Top Side, Top View (as if PCB Were Transparent); Actual Size: 37 mm 24 mm 4
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