Datasheet LT8714 (Analog Devices) - 10
| Hersteller | Analog Devices |
| Beschreibung | Bipolar Output Synchronous Controller with Seamless Four Quadrant Operation |
| Seiten / Seite | 36 / 10 — PIN FUNCTIONS EN (Pin 16):. RT (Pin 18):. SYNC (Pin 19):. CTRL (Pin 17):. … |
| Dateiformat / Größe | PDF / 1.9 Mb |
| Dokumentensprache | Englisch |
PIN FUNCTIONS EN (Pin 16):. RT (Pin 18):. SYNC (Pin 19):. CTRL (Pin 17):. GND (Pin 20 and Exposed Pad Pin 21):
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LT8714
PIN FUNCTIONS EN (Pin 16):
Enable Pin. In conjunction with the UVLO
RT (Pin 18):
Timing Resistor Pin. Adjusts the LT8714’s (undervoltage lockout) circuit, this pin is used to enable/ switching frequency. Place a resistor from this pin to disable the chip and restart the soft-start sequence. Drive ground to set the frequency to a fixed free-running level. below 0.3V to disable the chip with very low quiescent Do not float this pin. current. Drive above 1.3V (typical) to activate the chip
SYNC (Pin 19):
To synchronize the switching frequency and restart the soft-start sequence. See the Block Diagram to an outside clock, simply drive this pin with a clock. The and Applications section for more information. Do not high voltage level of the clock must be between 1.5V and float this pin. 5V, and the low level must be less than 0.4V. Drive this
CTRL (Pin 17):
Output Voltage Control Pin. The CTRL pin pin to less than 0.4V to revert to the internal free-running sets the regulation voltage for VFB. The CTRL pin accepts clock. See the Applications Information section for more voltages from 0.1 to 1.1V. In the event that the CTRL pin information. is driven above 1.213V, the voltage at FB regulates to
GND (Pin 20 and Exposed Pad Pin 21):
Ground. Must be ≈1.213V. Likewise, if the CTRL pin is driven below 0V, soldered directly to local ground plane. the voltage at FB regulates to ≈0V. 8714f 10 For more information www.linear.com/LT8714 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Appendix Typical Applications Package Description Typical Application Related Parts
PIN FUNCTIONS EN (Pin 16):
Enable Pin. In conjunction with the UVLO
RT (Pin 18):
Timing Resistor Pin. Adjusts the LT8714’s (undervoltage lockout) circuit, this pin is used to enable/ switching frequency. Place a resistor from this pin to disable the chip and restart the soft-start sequence. Drive ground to set the frequency to a fixed free-running level. below 0.3V to disable the chip with very low quiescent Do not float this pin. current. Drive above 1.3V (typical) to activate the chip
SYNC (Pin 19):
To synchronize the switching frequency and restart the soft-start sequence. See the Block Diagram to an outside clock, simply drive this pin with a clock. The and Applications section for more information. Do not high voltage level of the clock must be between 1.5V and float this pin. 5V, and the low level must be less than 0.4V. Drive this
CTRL (Pin 17):
Output Voltage Control Pin. The CTRL pin pin to less than 0.4V to revert to the internal free-running sets the regulation voltage for VFB. The CTRL pin accepts clock. See the Applications Information section for more voltages from 0.1 to 1.1V. In the event that the CTRL pin information. is driven above 1.213V, the voltage at FB regulates to
GND (Pin 20 and Exposed Pad Pin 21):
Ground. Must be ≈1.213V. Likewise, if the CTRL pin is driven below 0V, soldered directly to local ground plane. the voltage at FB regulates to ≈0V. 8714f 10 For more information www.linear.com/LT8714 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Appendix Typical Applications Package Description Typical Application Related Parts