COSINE Tier-1 distributor Jarwey｜Shunt references for ADC and supply monitors
Jarwey is a Tier-1 distributor of COSINE—selection support, datasheets, sampling & small batch, lead-time coordination.
COSINE shunt voltage references target precision references, adjustable ADC references, and supply monitoring. Split adjustable shunts (COS431/432) from fixed-voltage shunts (COS385-1.2N / COS4040). A separate low-voltage shunt pair, COSTLVH431/432, maps to TLVH431/432 in the cross-reference file. Op-amp current-sense notes stay in the existing COS4177 article.
Datasheets from Jarwey. TL431 / LM4040 names are evaluation anchors only.
Product features
Precision references with adjustable or binned outputs, wide operating current, low output impedance, and temperature compensation.
Applications (vendor-stated)
Precision references, adjustable converter references, and supply-voltage monitoring.
Reference table
| PN | Output | Accuracy | TC | Current | Pkg | Cross-ref | Page |
|---|---|---|---|---|---|---|---|
| COS431 | 1.24–18 V adj. | 0.5% | 20 ppm/°C | 100 µA–100 mA | SOT-23-3 | TL431 | 1007 |
| COS432 | 1.24–18 V adj. | 0.5% | 20 ppm/°C | 100 µA–100 mA | SOT-23-3 | TL432 | 1008 |
| COS385-1.2N | 1.235 V fixed | 0.2% | 50 ppm/°C | 10 µA–20 mA | SOT-23-3 | LM385-1.2 | 1009 |
| COS4040 | 2.048–10 V bins | 0.2% | 50 ppm/°C | 10 µA–20 mA | SOT-23-3 | LM4040 | 1010 |
| COSTLVH431A | low-voltage adj. | datasheet | datasheet | datasheet | SOT-23-3 | TLVH431 | 1011 |
| COSTLVH432A | low-voltage adj. | datasheet | datasheet | datasheet | SOT-23-3 | TLVH432 | 1012 |
Also: COSTLVH431M / COSTLVH432M. COS4040 bins: 2.048, 2.5, 3.0, 4.096, 5.0, 8.192, 10.0 V.
Checklist before freeze
- Role: ADC full-scale reference vs supply monitor vs programmable shunt.
- Voltage: 1.24–18 V adjustable, 1.235 V fixed, or an ADC bin.
- Accuracy / TC: 0.5% / 20 ppm vs 0.2% / 50 ppm.
- Bias: minimum cathode current, impedance, compensation cap.
- Samples: request from Jarwey before BOM freeze.
Pages & contact
- COS431 · COS4040 · COS385-1.2N · COSTLVH431A
Jarwey · COSINE Tier-1 distributor · kerry.w@jarwey.cn · Contact.
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