as1720 austriamicrosystems, as1720 Datasheet
as1720
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as1720 Summary of contents
Page 1
... Thermal shutdown: 150ºC 8-pin MLPD (2x2mm) Package ! ! On request SOIC 8 Package (reduced temperature range -40°C to +85°C) 3 Applications The AS1720 is ideal for fluid and gas flow systems, industrial control, electrical heaters, motor speed control. Internal VDDA typ. 3.3V LDO & Ref Generator 30kHz ...
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... Hold Current. This pin defines the current during hold phase by means resistor. Enable Not. This pin can be used to switch on/off the current source (e.g. via a µP), when the AS1720 is always powerd on. Low during start-up: When VDDHV is applied, the device starts with the energise phase, followed by the hold phase. 8 ENN When the device is constantly powerd on, it can be controlled by this pin ...
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... AS1720 Datasheet - Absolute Maximum Ratings Stresses beyond those listed in Table 3 and functional operation of the device at these or any other conditions beyond those indicated in Characteristics on page 4 is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability ...
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... -40°C to +125ºC (unless otherwise specified). Typical Values are at T DDHV SS AMB Limits are 100% production tested at T Table 4. Electrical Characteristics Symbol Parameter valid for AS1720A & AS1720B V Supply Voltage Range DDHV V Internal Supply DDA I Supply Current DD Output Energizing Current ...
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... AS1720 Datasheet - Typical Operating Characteristics 30kΩ 120kΩ, T SUPPLY IE IH Figure 3. Duty Cycle vs. V DUTY 0.5 0.75 1 1.25 1.5 1.75 Voltage @ pin DUTY (V) Figure 5. Supply Current vs. Supply Voltage ...
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... After power up, the delay time (see Delay) automatically. During the hold phase the DC output current is reduced according to the R PWM Operation (AS1720B only) After power up, the delay time (see Delay) automatically. The internal RC oscillator sets the PWM period. The duty cycle is either defined by the external resistor divider (voltage) at pin DUTY or by the fixed internal divider ...
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... Datasheet - Control by pin ENN When VDDHV is constantly switched on the AS1720 can be controlled by pin ENN. The functionality is the same as for controlling the device via pin VDDHV. This feature is useful when controlling by a microprocessor is desired. ...
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... Datasheet - Application Information In order to drive relays, which need more than 100mA current, an external circuitry application shows how to drive 5W @12V relays. This circuit is only applicable for AS1720A. For this example with R1 = 100Ω and R Figure 11. AS1720A - Typical Application Vsupply: +12V ...
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... AS1720 Datasheet - Package Drawings and Markings The device is available in a 8-pin MLPD (2x2mm) package. Figure 12. 8-pin MLPD (2x2mm) Package Diagram D INDEX AREA (D/2xE/2) aaa C 2x TOP VIEW ccc C SIDE VIEW 0 ...
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... Solenoid / Valve Driver with Current Limitation AS1720A-ATDT A0 and with DC Current Source Operation Solenoid / Valve Driver with Current Limitation AS1720B-ATDT AW and with PWM Switching Operation Note: All products are RoHS compliant and Pb-free. Buy our products or get free samples online at ICdirect: For further information and requests, please contact us or find your local distributor at www ...
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... AS1720 Datasheet Copyrights Copyright © 1997-2010, austriamicrosystems AG, Tobelbaderstrasse 30, 8141 Unterpremstaetten, Austria-Europe. Trademarks Registered ®. All rights reserved. The material herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. All products and companies mentioned are trademarks or registered trademarks of their respective companies. ...