ADP2121ACBZ-2.3-R7 Analog Devices Integrated Circuit (Other) In Stock
Analog Devices ADP2121ACBZ-2.3-R7 is a 600 mA synchronous step-down DC-to-DC converter operating from 2.9 V to 5.5 V input at 6 MHz switching frequency. Fixed 2.3 V output with PWM and PFM control modes. Available in compact CB-6-4 package with worldwide shipping.
- Manufacturer
- Analog Devices
- Package
- Other
- Pin Count
- 6
- Lifecycle
- OBSOLETE
- Datasheet
- ADP2121ACBZ-2.3-R7 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 600 mA output current synchronous step-down regulator with 6 MHz switching frequency enabling ultra-compact external inductor selection
- Dual control mode operation supporting both PWM (Pulse Width Modulation) and PFM (Pulse Frequency Modulation) for light-load efficiency optimization
- Wide 2.9 V to 5.5 V input voltage range with fixed 2.3 V output in a miniature CB-6-4 package ideal for space-constrained portable designs
Applications
The ADP2121ACBZ-2.3-R7 is designed for point-of-load power conversion in portable electronics, wearable devices, and IoT modules requiring a stable 2.3 V rail from single-cell Li-ion or regulated 3.3 V/5 V bus inputs. Its 6 MHz switching frequency allows the use of tiny inductors and ceramic capacitors, minimizing BOM size and PCB area. The automatic PFM mode at light loads improves battery life in always-on sensor nodes and wireless communication modules.
Specifications
| Pbfree Code | No |
| Manufacturer Package Code | CB-6-4 |
| YTEOL | 0 |
| Additional Feature | ALSO HAS CONTROL TECHNIQUE OF PFM |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | VOLTAGE-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 5.5V |
| Input Voltage-Min | 2.9V |
| Input Voltage-Nom | 3.6V |
| JESD-30 Code | R-PBGA-B6 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Output Current-Max | 1.222A |
| Output Voltage-Max | 2.369V |
| Output Voltage-Min | 2.231V |
| Output Voltage-Nom | 2.3V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | BGA6,2X3,16 |
| Package Shape | RECTANGULAR |
| Package Style | GRID ARRAY, VERY THIN PROFILE, FINE PITCH |
| Qualification Status | Not Qualified |
| Surface Mount | YES |
| Switcher Configuration | BUCK |
| Switching Frequency-Max | 6640kHz |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | MATTE TIN |
| Terminal Form | BALL |
| Terminal Pitch | 0.4mm |
| Terminal Position | BOTTOM |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does ADP2121ACBZ-2.3-R7 achieve high efficiency at light loads in battery-powered IoT designs?
The ADP2121ACBZ-2.3-R7 automatically transitions from PWM to PFM (Pulse Frequency Modulation) mode at light loads, significantly reducing switching losses. This dual-mode control allows the regulator to maintain high efficiency even when output current drops below 50 mA, extending battery runtime in IoT nodes operating from a 3.6 V nominal input supply.
What input voltage range and output current does ADP2121ACBZ-2.3-R7 support?
The ADP2121ACBZ-2.3-R7 accepts input voltages from 2.9 V to 5.5 V and delivers a fixed 2.3 V output at up to 600 mA. The 6 MHz switching frequency allows use of inductors as small as 1 µH, reducing solution footprint for portable and wearable applications powered by single-cell lithium batteries.
For a wearable fitness tracker running from a single Li-ion cell, why select ADP2121ACBZ-2.3-R7 over a lower-frequency buck converter?
At 6 MHz switching frequency, the ADP2121ACBZ-2.3-R7 allows inductors of approximately 1 µH and ceramic output capacitors below 10 µF, cutting component height and PCB area compared to 1 MHz–2 MHz alternatives. The 2.9 V minimum input is compatible with a discharged Li-ion cell at 3.0 V, ensuring the 2.3 V rail remains stable until battery cutoff.
Is ADP2121ACBZ-2.3-R7 suitable for replacing a 2.5 V LDO in a 3.3 V-powered embedded system?
Yes. The ADP2121ACBZ-2.3-R7 accepts up to 5.5 V input, making it compatible with a 3.3 V bus, and outputs a fixed 2.3 V at 600 mA. Unlike a linear LDO that dissipates (3.3 V − 2.3 V) × 600 mA = 600 mW as heat, the synchronous switching architecture keeps power dissipation well below 100 mW at full load, eliminating thermal management concerns.
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