GENERAL DEscriptION
The SGM852 is a dual adjustable voltage detector with reset and gate driver outputs. Two adjustable sense inputs can monitor a wide voltage range through external resistor dividers. The device has internal sequence timing. The delay time of two outputs can be programmed by their respective external capacitors. The gate driver output is implemented for external N-MOSFET by a charge pump circuit.
Two options are available. When both VSEN1 and VSEN2 voltages exceed the internal fixed rising threshold voltage in SGM852A, or VSEN1 voltage exceeds the internal fixed rising threshold and VSEN2 voltage falls below the internal fixed falling threshold in SGM852B, both internal comparators output high, the reset output (nRESET) asserts high after a propagation delay and a capacitor charge set-time delay. And if either of the comparators outputs low, nRESET asserts low.
The SGM852 is available in a Green TDFN-3×3-10L package. It operates over a junction temperature range of -40℃ to +125℃.
PIN CONFIGURATIONS
FEATURES
Operating Voltage Range: 3V to 16V
Low Dual Adjustable Threshold:
Rising Threshold: 0.6V (TYP)
Falling Threshold: 0.55V (TYP)
High Threshold Accuracy:
Rising Threshold Accuracy: ±1.5%
Falling Threshold Accuracy: ±2%
Push-Pull Reset Output
Gate Driver Output
Capacitor-Adjustable Delay Time
Available in a Green TDFN-3×3-10L Package
APPLICATIONS
Power Sequencing and Reset Sequencing
Power Switching
Portable Equipment
Computers/Servers