ispPAC-POWR1220AT8-01TN100I Lattice, ispPAC-POWR1220AT8-01TN100I Datasheet - Page 16

• Manufacturer Part Number: ispPAC-POWR1220AT8-01TN100I
• Description: Supervisory Circuits Prec. Power Supply Seq. Monitor Marg.
• Manufacturer: Lattice
• Type: E2CMOSr
• Series: ispPAC®r

Specifications of ispPAC-POWR1220AT8-01TN100I

• Minimum Operating Temperature: - 40 C
• Operating Supply Voltage: 3.3 V
• Number Of Voltages Monitored: 12
• Monitored Voltage: Adj
• Undervoltage Threshold: Adj
• Overvoltage Threshold: Adj
• Manual Reset: No
• Watchdog: No
• Supply Voltage (max): 3.96 V
• Supply Voltage (min): 2.8 V
• Supply Current (typ): 40000 uA
• Mounting Style: SMD/SMT
• Maximum Operating Temperature: 85 C
• Package / Case: TQFP-100
• Applications: General Purpose
• Voltage - Input: -0.3 V ~ 5.9 V
• Voltage - Supply: 2.8 V ~ 3.96 V
• Current - Supply: 40mA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Lattice Semiconductor
Figure 1-8. (a) Power Supply Voltage Ramp-up and Ramp-down Waveform and the Resulting Comparator
Output, (b) Corresponding to Upper and Lower Trip Points
During power supply ramp-up the comparator output changes from logic 0 to 1 when the power supply voltage
crosses the upper trip point (UTP). During ramp down the comparator output changes from logic state 1 to 0 when
the power supply voltage crosses the lower trip point (LTP). To monitor for over voltage fault conditions, the UTP
should be used. To monitor under-voltage fault conditions, the LTP should be used.
Tables 1 and 2 show both the under-voltage and over-voltage trip points, which are automatically selected in soft-
ware depending on whether the user is monitoring for an over-voltage condition or an under-voltage condition.
Comparator Logic Output
UTP
1-16
LTP
ispPAC-POWR1220AT8 Data Sheet
(a)
(b)