Features: n Standard Reset Threshold voltage: 3.08V
n Custom Reset Threshold voltages: For other voltages
between 2.2V and 5.0V in 10mV increments, contact
National Semiconductor Corp.
n No external components required
` Manual-Reset input
` RESET (LM3710) or RESET (LM3711) outputs
` Precision supply voltage monitor
` Factory programmable Reset and Watchdog Timeout Delays
` Separate Power Fail comparator
` Available in micro SMD package for minimum footprint
` ±0.5% Reset threshold accuracy at room temperature
` ±2% Reset threshold accuracy over temperature extremes
` Reset assertion down to 1V VCC (RESET option only)
` 28 A VCC supply currentApplication` Embedded Controllers and Processors
` Intelligent Instruments
` Automotive Systems
` Critical P Power MonitoringPinout
Specifications
| Power on Reset |
Yes |
| Watchdog |
Yes |
| Power Fail Input |
Yes |
| Manual Reset |
Yes |
| Reset Timeout Period |
200 ms |
| On/Off Pin |
Yes |
| Error Flag |
Yes |
| Input Min Voltage |
1 Volt |
| Input Max Voltage |
5.5 Volt |
| RegType |
Supervisor |
| Temperature Min |
-40 deg C |
| Temperature Max |
85 deg C |
| Voltage Supervised |
2.5 Volt |
| View Using Catalog |
Supply Voltage (VCC) ....−0.3V to 6.0V
All Other Inputs .. −0.3V to VCC + 0.3V
ESD Ratings (Note 2)
Human Body Model.......... 1.5kV
Machine Model..............150V
Power Dissipation ......... (Note 3)
DescriptionThe LM3710/LM3711 series of microprocessor supervisory circuits provide the maximum flexibility for monitoring power supplies and battery controlled functions in systems without backup batteries. The LM3710/LM3711 series are available in MSOP-10 and 9-bump micro SMD packages.
Built-in features include the following:
Reset: Reset is asserted during power-up, power-down, and brownout conditions. RESET# is guaranteed down to VCC of 1.0V.
Manual Reset Input: An input that asserts reset when pulled low.
Power-Fail Input: A 1.225V threshold detector for power fail warning, or to monitor a power supply other than VCC.
Low Line Output: This early power failure warning indicator goes low when the supply voltage drops to a value which is 2% higher than the reset threshold voltage.
Watchdog Timer: The WDI (Watchdog Input) monitors one of the µP's output lines for activity. If no output transition occurs during the watchdog timeout period, reset is activated.
Reliability Metrics
| Part Number |
Process |
EFR Reject |
EFR Sample Size |
PPM |
LTA Rejects |
LTA Device Hours |
FITS |
MTTF (Hours) |
| LM3710XKMM-232 |
CS065 |
2 |
34108 |
59 |
0 |
3862000 |
1 |
1095853045 |
| LM3710XKMM-463 |
CS065 |
2 |
34108 |
59 |
0 |
3862000 |
1 |
1095853045 |
| LM3710XNMM-450 |
CS065 |
2 |
34108 |
59 |
0 |
3862000 |
1 |
1095853045 |
| LM3710XNMM-470 |
CS065 |
2 |
34108 |
59 |
0 |
3862000 |
1 |
1095853045 |
| LM3710XNMMX-450 |
CS065 |
2 |
34108 |
59 |
0 |
3862000 |
1 |
1095853045 |
| LM3710XNMMX-470 |
CS065 |
2 |
34108 |
59 |
0 |
3862000 |
1 |
1095853045 |
| LM3710XQMM-308 |
CS065 |
2 |
34108 |
59 |
0 |
3862000 |
1 |
1095853045 |
| LM3710XQMMX-308 |
CS065 |
2 |
34108 |
59 |
0 |
3862000 |
1 |
1095853045 |
| LM3710XQTP-308 |
CS065 |
2 |
34108 |
59 |
0 |
3862000 |
1 |
1095853045 |
| LM3710XQTPX-308 |
CS065 |
2 |
34108 |
59 |
0 |
3862000 |
1 |
1095853045 |
| LM3710YQMM-232 |
CS065 |
2 |
34108 |
59 |
0 |
3862000 |
1 |
1095853045 |
Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.For more information on Reliability Metrics, please click here.
LM3710 Data Sheet
