ADM1073ARU-REEL7 Analog Devices Inc, ADM1073ARU-REEL7 Datasheet - Page 19

• Manufacturer Part Number: ADM1073ARU-REEL7
• Manufacturer: Analog Devices Inc

Specifications of ADM1073ARU-REEL7

• Linear Misc Type: Negative Voltage
• Family Name: ADM1073
• Package Type: TSSOP
• Operating Supply Voltage (min): -18V
• Operating Supply Voltage (max): -80V
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Industrial
• Product Depth (mm): 4.4mm
• Product Height (mm): 1mm
• Product Length (mm): 5mm
• Mounting: Surface Mount
• Pin Count: 14
• Lead Free Status / Rohs Status: Not Compliant

An undervoltage glitch is dealt with in a similar way. When V
falls below the undervoltage threshold of 0.868 V, the GATE
voltage is pulled low. V
operating voltage window, and the GATE drive is restored when
the undervoltage rising threshold (0.868 V plus preset UV
hysteresis level) is reached. Figure 39 illustrates the ADM1073’s
operation in an undervoltage situation.
SOFT START
The ADM1073 offers a variable soft start feature. The value of
the capacitor on the SS pin sets the ramp rate of the inrush
current profile at startup. Figure 40 to Figure 42 show different
inrush current ramp rates for three SS capacitors.
Figure 39. Timing Waveforms Associated with an Undervoltage Fault
(Ch1 = GATE; Ch2 = UV; Ch3 = PWRGD ; Ch4 = SPLYGD )
Figure 40. Soft Start Profile with a 0.1 nF Capacitor
(Ch1 = GATE; Ch2 = SENSE)
UV
begins to rise back toward the
Rev. 0 | Page 19 of 24
UV
Figure 42. Soft Start Profile with an 8.2 nF Capacitor
Figure 41. Soft Start Profile with a 1.5 nF Capacitor
(Ch1 = GATE; Ch2 = SENSE)
(Ch1 = GATE; Ch2 = SENSE)
ADM1073