R3120 Series
36V Input Voltage Detector with Delay Function or SENSE pin
Description
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.
Spec
| 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
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SPICE model download
You can download the product's SPICE model. Login/registration to myNISD is required to download.
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R3120NxxxA Typical Application
When using a shared input voltage between R3120 and CPU
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R3120NxxxE Typical Application
When using a shared input voltage between R3120 and CPU
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R3120NxxxA Timing Chart
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R3120NxxxE Timing Chart
Quality & Packages
- Refer to the datasheets for the details on the product.
- The package file or the datasheet includes package dimensions, taping specifications, taping reels dimensions, power dissipations, and recommended land pattern.
FAQ
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