ADM1070ARTZ Analog Devices Inc, ADM1070ARTZ Datasheet
ADM1070ARTZ
Specifications of ADM1070ARTZ
Available stocks
Related parts for ADM1070ARTZ
ADM1070ARTZ Summary of contents
Page 1
FEATURES Allows Safe Board Insertion and Removal from a Live –48 V Backplane Typically Operates from – –80 V Tolerates Transients up to –200 V (Limited by External Components) Accurate Programmable Linear Current Limit for In-Rush Control ...
Page 2
ADM1070–SPECIFICATIONS Parameter BOARD SUPPLY (not connected directly to device) Maximum Voltage Range Typical Operating Voltage Range VIN PIN––SHUNT REGULATOR Operating Supply Voltage Range Quiescent Supply Current Maximum Shunt Supply Voltage Undervoltage Lockout, V LKO ...
Page 3
Parameter SENSE PIN––CURRENT SENSE (continued) Continuous Short Circuit Time before Latched Shutdown, t SHORT Operating Sense Voltage Range, V SOP Input Current, I SENSE TIMER PIN––TIMING CONTROL Internal Oscillator Default Frequency, f (Not Seen at Pin) TIMERINT External/Internal Selection Threshold, ...
Page 4
ADM1070 Pin No. Mnemonic Function 1 SENSE Connection to External FET Source Voltage. A sense resistor is connected in the supply path between the SENSE Pin and V faults. This voltage is fed as an input to the linear current ...
Page 5
TEMPERATURE – C TPC 1. I vs. Temperature IN 1000 100 10 + + ...
Page 6
ADM1070 120 115 110 105 100 –50 –35 –20 – TEMPERATURE – C TPC 7. Analog Current Limit Voltage, V Temperature 150 145 140 135 130 125 120 115 110 105 100 –50 –35 ...
Page 7
V – V GATE TPC 13. I vs. V GATE 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 –50 –35 ...
Page 8
ADM1070 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 –50 –35 –20 – TEMPERATURE – C TPC 19. POR Delay vs. Temperature 4.0 3.5 3.0 2.5 2.0 1.5 - 1.0 0.5 0 –50 –35 –20 –5 10 ...
Page 9
FUNCTIONAL DESCRIPTION HOT CIRCUIT INSERTION Inserting circuit boards into a live –48 V backplane can cause large transient currents to be drawn as the board capacitance charges up. These transient currents can cause glitches on the system power supply and ...
Page 10
ADM1070 voltage between the SENSE and V 100 mV (the analog current limit voltage) during t then the ADM1070 takes action to reduce this current to a safer level. The internal analog current limit loop dynami- cally ...
Page 11
UNDERVOLTAGE/OVERVOLTAGE DETECTION The ADM1070 incorporates single-pin overvoltage and undervoltage detection with a programmable operating voltage window. When the voltage on the UV/OV pin rises above the OV rising threshold or falls below the UV falling threshold, a fault signal is ...
Page 12
ADM1070 FUNCTIONALITY AND TIMING Live Insertion The timing waveforms associated with the live insertion of a plug-in board using the ADM1070 are shown in the following figures. When the board connects the GND-V climbs this voltage ...
Page 13
CURRENT FAULT PLOTS Some timing waveforms associated with current over faults are shown in the following figures. Figure 9 shows how a current glitch (of approximately 500 µs) is dealt with when the output is shorted after power-up. The gate ...
Page 14
ADM1070 Figure 13 shows the behavior of ADM1070 when a temporary current fault occurs followed by a permanent current fault. When the first overcurrent fault occurs, the first 100 mV spike on the sense line can be seen. During the ...
Page 15
MAX REV. 0 OUTLINE DIMENSIONS 6-Lead Plastic Surface-Mount Package [SOT-23] (RT-6) Dimensions shown in millimeters 2.90 BSC 2.80 BSC 1.60 BSC PIN 1 0.95 BSC 1.90 1.30 BSC 1.15 0.90 1.45 MAX 0.22 ...
Page 16
–16– ...