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MAX6364HUT26 Datasheet(PDF) 5 Page - Maxim Integrated Products |
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MAX6364HUT26 Datasheet(HTML) 5 Page - Maxim Integrated Products |
5 / 8 page SOT23, Low-Power µP Supervisory Circuits with Battery Backup _______________________________________________________________________________________ 5 1.234 1.235 1.236 MAX6364 RESET IN THRESHOLD vs. TEMPERATURE TEMPERATURE (°C) -40 20 40 -20 0 60 80 Typical Operating Characteristics (continued) (TA = +25°C, unless otherwise noted.) 1.0 1.9 1.6 1.3 2.8 2.5 2.2 MAX6364 RESET IN TO RESET PROPAGATION DELAY vs. TEMPERATURE TEMPERATURE (°C) -40 20 40 -20 0 60 80 VOD = 50mV Pin Description Detailed Description The Typical Operating Circuit shows a typical connec- tion for the MAX6361/MAX6363/MAX6364 family. OUT powers the static random-access memory (SRAM). OUT is internally connected to VCC if VCC is greater than the reset threshold, or to the greater of VCC or VBATT when VCC is less than the reset threshold. OUT can supply up to 150mA from VCC. When VCC is higher than VBATT, the BATT ON (MAX6363) output is low. When VCC is lower than VBATT, an internal MOSFET connects the backup battery to OUT. The on-resistance of the MOSFET is a function of backup-battery voltage and is shown in the Battery to Out On-Resistance vs. Temperature graph in the Typical Operating Characteristics section. Backup-Battery Input. When VCC falls below the reset threshold, BATT switches to OUT if VBATT is 20mV greater than VCC. When VCC rises 20mV above VBATT, VCC switches to OUT. The 40mV hysteresis prevents repeated switching if VCC falls slowly. BATT 6 MAX6363 Battery-On Output. BATT ON goes high in battery backup mode. BATT ON MAX6364 Reset Input. When RESET IN falls below 1.235V, reset is asserted. Reset output remains asserted as long as RESET IN is low and for at least 150ms (tRP) after RESET IN goes high. RESET IN Supply Voltage. Reset is asserted when VCC drops below the reset threshold voltage (VTH). Reset remains asserted until VCC rises above VTH and for at least 150ms after VCC rises above VTH. VCC 4 Output. OUT sources from VCC when it is above the reset threshold (VTH), and from the greater of VCC or BATT when VCC is below VTH. OUT 5 MAX6361 Manual-Reset Input. Maintaining logic low on MR asserts a reset. Reset output remains assert- ed for at least 150ms (tRP) after MR transitions from low to high. Leave unconnected or connected to VCC if not used. MR 3 Ground GND 2 PIN Active-Low Reset Output (for L and P versions). RESET remains low while VCC is below the reset thresh- old and for at least 150ms (tRP) after VCC rises above the reset threshold. RESET also asserts when MR or RESET IN is low. RESET Active-High Reset Output (for H versions). RESET remains high while VCC is below the reset threshold and for at least 150ms (tRP) after VCC rises above the reset threshold. RESET also asserts when MR or RESET IN is low. RESET 1 FUNCTION NAME |
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Similar Description - MAX6364HUT26 |
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