AS1720B-ATDT austriamicrosystems, AS1720B-ATDT Datasheet
AS1720B-ATDT
Specifications of AS1720B-ATDT
Related parts for AS1720B-ATDT
AS1720B-ATDT Summary of contents
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... AS1720A DC Current Source Operation AS1720B PWM Switching Operation The AS1720A and AS1720B can be set to provide a strong initial closure current and is automatically switching to hold mode for power saving. The initial DC current, the hold current and the duty cycle of the PWM can be adjusted by external resistors. An internal thermal sensor prevents damage of the circuit due to excessive heating up ...
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... 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. High: The output current source is switched off. Low: The device starts with the energise phase, followed by the hold phase. www.austriamicrosystems.com VDDHV 8 ENN VDDA 2 ...
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... VDDHV, OUT VDDA, DUTY, ENN, IE, IH Latch-Up ESD Thermal Resistance θ JA Junction Temperature T J Operating Temperature Range Storage Temperature Range Package Body Temperature www.austriamicrosystems.com may cause permanent damage to the device. These are stress ratings only, Min Max Units -0.9 + -100 ...
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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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... V (V) DDHV Figure 7. Transfer Function vs. Supply Voltage 1400 1350 1300 1250 1200 1150 1100 1050 (V) DDHV www.austriamicrosystems.com = +25ºC (unless otherwise specified); AMB Figure 4. PWM Frequency vs. Temperature 2.25 2.5 -40 -20 0 Figure 6. Supply Current vs. Temperature 550 500 450 400 350 300 40 45 ...
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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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... VDDHV. This feature is useful when controlling by a microprocessor is desired. Because of the internal pull-up resistor to V can be used. Current Adjust (AS1720A) and Current Limitation (AS1720B) This block provides the current reference for the output current source. The current is generated by regulating the internal Bandgap voltage to the pins IE and IH. The external resistors R ...
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... This circuit is only applicable for AS1720A. For this example with R1 = 100Ω and R Figure 11. AS1720A - Typical Application Vsupply: +12V VDDHV 100nF VDDA AS1720A DUTY ENN IE Energising Current adjust www.austriamicrosystems.com = 2.5Ω the current Is is calculated as follows 100 × × ----- - -------- - I = ...
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... Dimension b applies to metallized terminal and is measured between 0.15mm and 0.30mm from the terminal tip. If the terminal has the optional radius on the other end of the terminal, the dimension B should not be mea- sured in that radius area. 9. Coplanarity applies to the terminals and all other bottom surface metallization. www.austriamicrosystems.com e B PIN#1 ID ...
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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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... The information furnished here by austriamicrosystems AG is believed to be correct and accurate. However, austriamicrosystems AG shall not be liable to recipient or any third party for any damages, including but not limited to personal injury, property damage, loss of profits, loss of use, interruption of business or indirect, special, incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the tech- nical data herein ...