My Inquiry
My Account
Analog Devices Inc. ADP2109ACBZ-1.2-R7
- Part No.:
- ADP2109ACBZ-1.2-R7
- Manufacturer:
- Analog Devices Inc.
- Package:
- 5-WFBGA, WLCSP
- Datasheet:
-
ADP2109ACBZ-1.2-R7.pdf
- Description:
- IC REG BUCK 1.2V 600MA 5WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:1,577
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADP2109ACBZ-1.2-R7 from Analog Devices is a fixed-output 1.2 V, 600 mA synchronous step-down DC/DC converter in a 5-ball WLCSP package, featuring 3 MHz switching frequency, internal discharge switch (150 Ω), 95% peak efficiency, and 18 μA quiescent current - designed for powering core logic rails in space-constrained portable electronics.
For engineers reviewing the ADP2109ACBZ-1.2-R7 datasheet, ADP2109ACBZ-1.2-R7 pinout, ADP2109ACBZ-1.2-R7 application, or ADP2109ACBZ-1.2-R7 equivalent, key selection considerations include its 2.3 V–5.5 V input range, power save mode transition at 80 mA, 100% duty-cycle low-dropout operation, thermal shutdown at 150°C, and compatibility with tiny multilayer inductors (0.7–3 μH) and ceramic capacitors (≥4.7 μF).
Technical Context
The ADP2109ACBZ-1.2-R7 employs a high-speed current-mode PWM architecture with fixed 3 MHz oscillator, enabling fast line/load transient response and stable regulation across 2.3 V–5.5 V input. Its integrated PFET/NFET synchronous rectifier and internal compensation eliminate external compensation components.
It dynamically shifts between PWM mode (fixed-frequency, tight regulation) and power save mode (hysteretic, low-IQ) below 80 mA load, while maintaining output accuracy of ±2% in PWM mode. The internal 150 Ω discharge switch activates during shutdown, UVLO, or thermal shutdown to rapidly deplete VOUT capacitance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.2 V ±2% in PWM mode - ensures stable core supply for low-voltage processors and ASICs without external feedback resistors. |
| Max Output Current | 600 mA across full input range - supports moderate-power digital loads including baseband processors and memory interfaces. |
| Input Voltage Range | 2.3 V to 5.5 V - compatible with single Li+/Li-Po cells, USB 5 V, and multi-cell alkaline/NiMH sources. |
| Switching Frequency | 3.0 MHz ±0.5 MHz - enables use of sub-1 μH inductors and <10 μF ceramic output capacitors for ultra-compact PCB layouts. |
| Quiescent Current | 18 μA typical - extends battery life in always-on or standby functions of handheld devices. |
| Shutdown Current | 0.2 μA - minimizes leakage drain during system sleep, critical for long-duration portable operation. |
| Discharge Switch RDS(ON) | 150 Ω typical - discharges 10 μF output cap from 1.2 V to <100 mV in ~200 μs, preventing residual voltage issues during power sequencing. |
| Thermal Shutdown | 150°C with 20°C hysteresis - protects die integrity under sustained overload or poor PCB thermal design; resumes operation at ≤130°C. |
Pinout & Package
ADP2109ACBZ-1.2-R7 uses a 5-ball Wafer-Level Chip Scale Package (WLCSP) with 0.4 mm pitch and bottom-side ball layout. The package measures 1.0 mm × 1.0 mm × 0.5 mm (typical), optimized for minimal board area in ultra-thin portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (A1) | Power input node | Supplies PFET high-side switch; requires ≥2.2 μF bypass capacitor placed adjacent to A1 ball to suppress high-frequency switching noise. |
| GND (A2) | Reference ground | Common return path for input/output capacitors and IC substrate; must be connected to low-impedance PCB ground plane. |
| SW (B) | Switch node | Drain of PFET and source of NFET synchronous rectifier; carries high di/dt square wave - requires shortest possible trace to inductor. |
| EN (C1) | Logic enable control | Active-high TTL-compatible input; drives high (>1.2 V) to enable, low (<0.4 V) to enter 0.2 μA shutdown with automatic output discharge. |
| FB (C2) | Feedback sense | Internally connected to 1.2 V reference; externally tied directly to output for fixed-output variants - no resistor divider needed. |
Key Features
| Feature | Design Value |
|---|---|
| Internal synchronous rectification | Eliminates external Schottky diode, reducing conduction losses and improving efficiency by up to 8% vs. asynchronous designs at 300 mA. |
| Integrated discharge switch | 150 Ω NMOS switch automatically discharges VOUT on disable, enabling clean power-down sequencing without external circuitry. |
| Current-mode PWM + PSM dual-mode control | Seamlessly transitions between fixed-frequency PWM (high efficiency >80 mA) and hysteretic power save mode (<80 mA), maintaining >85% efficiency down to 1 mA load. |
| 100% duty-cycle low-dropout operation | PFET remains fully on when input approaches output voltage, sustaining regulation down to VIN = VOUT + 0.1 V - critical for battery end-of-life operation. |
| Internal soft start & compensation | Linear VOUT ramp over ~550 μs prevents inrush current; eliminates need for external compensation network or soft-start capacitor. |
| Robust protection suite | Includes undervoltage lockout (2.15 V), thermal shutdown (150°C), current limit (1.1–1.5 A PFET peak), and short-circuit frequency foldback. |
Applications
| Mobile Baseband Processors | Digital Camera Image Sensors |
|---|---|
Use Scenario: Powering ARM-based application processors in smartphones during active UI rendering and background sync tasks. IC Role / Device Role / Timing Role: Primary core voltage regulator delivering tightly regulated 1.2 V at up to 600 mA with <2% output error and fast transient recovery. Use Value: Enables reliable processor operation across battery voltage sag (2.7 V–4.2 V) while maintaining 95% peak efficiency and minimizing thermal rise in sealed enclosures. | Use Scenario: Supplying image sensor analog and digital rails in compact digital cameras during burst capture and video streaming. IC Role / Device Role / Timing Role: Low-noise, fast-response DC/DC converter providing stable 1.2 V to sensor interface logic and ADC reference circuits. Use Value: Delivers <50 mVpp output ripple and <10 μs load transient recovery, preventing image artifacts and timing jitter in high-resolution CMOS sensors. |
| Portable Media Player SoCs | GPS Navigation Units |
Use Scenario: Regulating core voltage for audio/video SoCs in MP3 players and portable video players during decode and display operations. IC Role / Device Role / Timing Role: High-efficiency step-down converter supporting dynamic voltage scaling (DVS) via EN-controlled on/off cycling. Use Value: Achieves 18 μA quiescent current and 0.2 μA shutdown current, extending playback time by >15% versus comparable converters in 24-hour battery life tests. | Use Scenario: Powering GPS baseband ICs and RF front-end modules in automotive-grade navigation units operating across wide temperature ranges. IC Role / Device Role / Timing Role: Robust DC/DC regulator with thermal shutdown (150°C) and UVLO (2.15 V) ensuring continuous operation during cold cranking and hot ambient conditions. Use Value: Maintains regulation from −40°C to +85°C ambient with <±2.5% total output error, eliminating brownout resets during vehicle ignition transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADP2108ACBZ-1.2-R7 | No internal discharge switch; otherwise identical specs, pinout, and package. | Not suitable where automatic VOUT discharge is required for safe power sequencing or I/O isolation. | Select ADP2108ACBZ-1.2-R7 only if discharge functionality is unnecessary and cost reduction is prioritized. |
| TPS62231DRYR | 3 MHz, 600 mA, 1.2 V fixed output; 12 μA IQ; 5-pin SOT-563 package (1.6 × 1.6 mm); no discharge switch. | Larger footprint and different pinout; lacks discharge function but offers lower quiescent current. | Choose TPS62231DRYR when board area allows SOT-563 and discharge is handled externally or omitted. |
Compared with ADP2109ACBZ-1.2-R7, ADP2108ACBZ-1.2-R7 removes the discharge switch to reduce complexity and cost, while TPS62231DRYR trades WLCSP miniaturization for slightly lower IQ and a more widely supported package - making ADP2109ACBZ-1.2-R7 uniquely suited for space-constrained, sequenced-power applications requiring automatic output discharge.
Availability
ADP2109ACBZ-1.2-R7 is available at Aetrix Electronics and suitable for mobile baseband processors, digital camera image sensors, portable media player SoCs, GPS navigation units, and wireless handset power management requiring stable component supply, consistent parametric performance, and long-term production availability.
Supply support for ADP2109ACBZ-1.2-R7 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, communications, industrial, and automotive markets.
The ADP2109 product line delivers ultra-compact, high-efficiency DC/DC converters for battery-powered portable electronics - engineered to minimize solution size, maximize battery runtime, and simplify power design through integration of synchronous switches, compensation, soft start, and discharge functionality.
FAQ
What is the output voltage tolerance of the ADP2109ACBZ-1.2-R7 under varying load and temperature?
The ADP2109ACBZ-1.2-R7 guarantees ±2% output voltage accuracy in PWM mode at 25°C, and ±2.5% across the full −40°C to +125°C junction temperature range and 2.3 V–5.5 V input voltage range. This is achieved via laser-trimmed internal feedback and stable bandgap reference, ensuring reliable core rail regulation for sensitive digital loads without external trimming.
Does the ADP2109ACBZ-1.2-R7 require external compensation components?
No, the ADP2109ACBZ-1.2-R7 features fully internal compensation - no external RC network or compensation capacitor is needed. Its current-mode architecture and factory-tuned loop response ensure stability with standard 0.7–3 μH inductors and 4.7–10 μF ceramic output capacitors, simplifying design and reducing BOM count.
How does the power save mode (PSM) of the ADP2109ACBZ-1.2-R7 improve light-load efficiency?
The ADP2109ACBZ-1.2-R7 enters power save mode below 80 mA load, switching from fixed-frequency PWM to a hysteretic control scheme that reduces switching activity and gate drive losses. This lowers quiescent current to ~18 μA and maintains >85% efficiency at 1 mA load - significantly extending battery life in standby or idle states compared to forced-PWM converters.
What is the purpose and behavior of the internal discharge switch in the ADP2109ACBZ-1.2-R7?
The ADP2109ACBZ-1.2-R7 integrates a 150 Ω NMOS discharge switch between FB and GND. It activates automatically when EN is pulled low, during UVLO, or in thermal shutdown - discharging the output capacitor from 1.2 V to <100 mV in ~200 μs. This prevents back-powering of upstream circuitry and ensures safe, predictable power-down sequencing.
Can the ADP2109ACBZ-1.2-R7 operate with input voltages below 2.3 V?
No - the ADP2109ACBZ-1.2-R7 has an absolute minimum input voltage of 2.3 V and incorporates undervoltage lockout (UVLO) that disables operation when VIN falls below 2.15 V (typical). Attempting to operate below 2.3 V risks regulation loss, erratic switching, or device shutdown; it is not rated for sub-2.3 V operation even in 100% duty cycle mode.
ADP2109ACBZ-1.2-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 5-WFBGA, WLCSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.3V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.2V
- Voltage - Output (Max):
- -
- Current - Output:
- 600mA
- Frequency - Switching:
- 3MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 5-WLCSP (1.02x1.45)
ADP2109ACBZ-1.2-R7 FAQ
1.How can I place an order for ADP2109ACBZ-1.2-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP2109ACBZ-1.2-R7 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ADP2109ACBZ-1.2-R7 reliable?
The price and inventory of ADP2109ACBZ-1.2-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP2109ACBZ-1.2-R7 is usually 5 days.
3.What payment methods are accepted for ADP2109ACBZ-1.2-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP2109ACBZ-1.2-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP2109ACBZ-1.2-R7?
ADP2109ACBZ-1.2-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP2109ACBZ-1.2-R7 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ADP2109ACBZ-1.2-R7?
For technical support, including ADP2109ACBZ-1.2-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP2109ACBZ-1.2-R7 requirements.
6.How does Aetrix verify that ADP2109ACBZ-1.2-R7 is sourced from the original manufacturer or authorized distributors?
All ADP2109ACBZ-1.2-R7 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ADP2109ACBZ-1.2-R7 meets industry standards.
7.What is the process for return or replacement of ADP2109ACBZ-1.2-R7?
All ADP2109ACBZ-1.2-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADP2109ACBZ-1.2-R7, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ADP2109ACBZ-1.2-R7 part is unused and in its original packaging.
Return procedure for ADP2109ACBZ-1.2-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADP2109ACBZ-1.2-R7 Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
