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| # | Part: | Description: | Manuf. | Package | Pins | T°min | T°max | PDF size |
| 21. |  R1111N221A-TL | Low noise 150mA LDO regulator. Output voltage 2.2V. "L" active type. Taping specification TL | RICOH | SOT-23 | 5 | -40°C | 85°C | 140K |
| 22. | R1111N221B-TL | Low noise 150mA LDO regulator. Output voltage 2.2V. "H" active type. Taping specification TL | RICOH | SOT-23 | 5 | -40°C | 85°C | 140K |
| 23. | R1121N221A-TL | Low noise 150mA LDO regulator. Output voltage 2.2V. Active L type. Taping specification TL. | RICOH | SOT-23 | 5 | -40°C | 85°C | 135K |
| 24. | R1121N221A-TR | Low noise 150mA LDO regulator. Output voltage 2.2V. Active L type. Standard taping specification TR. | RICOH | SOT-23 | 5 | -40°C | 85°C | 135K |
| 25. | R1121N221A-TR | Low noise 150mA LDO regulator. Output voltage 2.2V. Active L type. Standard taping specification TR. | RICOH | SOT-23 | 5 | -40°C | 85°C | 135K |
| 26. | R1121N221B-TL | Low noise 150mA LDO regulator. Output voltage 2.2V. Active H type. Taping specification TL. | RICOH | SOT-23 | 5 | -40°C | 85°C | 135K |
| 27. | R1121N221B-TR | Low noise 150mA LDO regulator. Output voltage 2.2V. Active H type. Standard taping specification TR. | RICOH | SOT-23 | 5 | -40°C | 85°C | 135K |
| 28. | R1221N22AA-TR | Step-down DC/DC converter with voltage detector. Output voltage (Vout) 2.2V. Detector threshold (-Vdet) 3.0V. Oscillator frequency 300kHz | RICOH | SOT-23 | 6 | -40°C | 85°C | 218K |
| 29. | R1221N22AC-TR | Step-down DC/DC converter with voltage detector. Output voltage (Vout) 2.2V. Detector threshold (-Vdet) 3.0V. Oscillator frequency 300kHz | RICOH | SOT-23 | 6 | -40°C | 85°C | 218K |
| 30. | R1221N22AD-TR | Step-down DC/DC converter with voltage detector. Output voltage (Vout) 2.2V. Detector threshold (-Vdet) 3.0V. Oscillator frequency 500kHz | RICOH | SOT-23 | 6 | -40°C | 85°C | 218K |
