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R3120 Series
36V Input Voltage Detector with Delay Function or SENSE pin
The R3120 Series are CMOS-based 36V input voltage detector ICs. Since the maximum input voltage of R3120 is 36V (absolute maximum rating: 50V) and R3120 can detect up to 12V without divider resistor, it is suitable for automotive applications. There are two versions: A version has the CD pin for setting the output delay time. E version has the SENSE pin. The output delay time accuracy of R3120xxxxA is -50% to +80%. The reset signal of R3120xxxxE does not become unstable under the condition that the power supply is sufficient to operate the IC, and the "L" can be maintained. SOT-23-5 package is available.
Specs & Datasheets
| Automotive | |
|---|---|
| Operating Voltage Range | R3120NxxxA: 1.2 V to 36.0 V (50.0 V) R3120NxxxE: 2.1 V to 6.0 V (7.0 V) |
| Operating Temperature Range | -40°C to 105°C (125°C) |
| Supply Current | Typ. 3.3 µA |
| Detector Threshold Range | 2.3 V to 12.0 V (0.1 V step) |
| Detector Threshold Accuracy | ±1.5% (Ta = 25°C) |
| Detector Threshold Temperature Coefficient | Typ. ±100 ppm/°C |
| Release Delay Time | R3120NxxxA: Typ.85 ms (CD = 0.01 µF) |
| Release Delay Time Accuracy | R3120NxxxA: −50% to 80% |
| Output Type | Nch Open Drain |
| Package | SOT-23-5 |
Technical Documents
R3120NxxxA Typical Application
When using a shared input voltage between R3120 and CPU
R3120NxxxE Typical Application
When using a shared input voltage between R3120 and CPU
R3120NxxxA Timing Chart
R3120NxxxE Timing Chart
Quality & Packages
| Product Name | Compatibility | Package | Marking | Reliability |
|---|---|---|---|---|
| R3120Nxxxx-TR-AE |
|
SOT-23-5 | R3120N | R3120N-AE |
A
1
P
Refer to the datasheets for the details on the product.
The package file includes package dimensions, taping specifications, taping reels dimensions, power dissipations, and recommended land pattern.
Please contact us or our distributors for unpublished reliability information.
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