My Inquiry
My Account
Analog Devices Inc. ADP3051ARMZ-REEL7
- Part No.:
- ADP3051ARMZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
ADP3051ARMZ-REEL7.pdf
- Description:
- IC REG SW SYNC BUCK 500MA 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:320
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADP3051ARMZ-REEL7 from Analog Devices is a 500 mA synchronous step-down DC-DC converter with current-mode PWM control, Tri-Mode™ operation, 550 kHz switching frequency, and 0.8 V feedback reference-designed for Li-ion powered handhelds requiring high efficiency across light-to-heavy loads.
For engineers reviewing the ADP3051ARMZ-REEL7 datasheet, ADP3051ARMZ-REEL7 pinout, ADP3051ARMZ-REEL7 application, or ADP3051ARMZ-REEL7 equivalent, key selection criteria include input voltage range (2.7 V–5.5 V), output regulation accuracy (±1.6% over line/load/temp), integrated P/N-channel MOSFETs, MSOP-8 thermal performance (θJA = 116°C/W on 4-layer board), and Tri-Mode™ efficiency optimization.
Technical Context
The ADP3051ARMZ-REEL7 implements monolithic current-mode buck regulation with an integrated high-side P-channel MOSFET (190 mΩ typical RDS(ON)) and low-side N-channel synchronous rectifier (150 mΩ typical RDS(ON)). Its Tri-Mode™ architecture transitions between fixed-frequency PWM (550 kHz), variable-frequency PWM, and single-pulse mode to maintain >85% efficiency from 1 mA to 500 mA load.
Control relies on a transconductance error amplifier (0.32 mS, 5 nA FB bias) and internal slope compensation ensuring stability with inductors ≥ VOUT/320 mA/µs. The 0.8 V feedback threshold enables precise output setting via external resistor divider, while SHDN supports logic-level enable/disable with 0.4 V low-threshold and 0.5 V hysteresis relative to IN.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7 V to 5.5 V - supports single-cell Li-ion (2.7–4.2 V) and fixed 3.3 V/5 V rails without external LDO pre-regulation. |
| Output Current | 500 mA continuous - sufficient for core logic supply in MP3 players, PDAs, and embedded microcontrollers. |
| Feedback Reference | 0.8 V ±13 mV - enables accurate output setting down to 0.8 V (e.g., 1.2 V with 12.5 kΩ/10 kΩ divider) with minimal divider current error. |
| Switching Frequency | 550 kHz typical (410–690 kHz) - permits use of compact 6.8–10 µH inductors and 10 µF ceramic output capacitors. |
| Quiescent Current | 300 µA typical at full load - ensures low standby power in battery-powered systems during active operation. |
| Shutdown Current | 25 µA max - extends battery life in sleep modes without external power gating circuitry. |
| Current Limit Threshold | 1000 mA typical - provides robust short-circuit protection while allowing 500 mA continuous delivery with margin. |
Pinout & Package
ADP3051ARMZ-REEL7 is housed in an 8-lead MSOP package (RM-8 outline, 3.0 mm × 3.0 mm × 1.1 mm height) with exposed pad for thermal enhancement. Pin 1 is NC (no connect); pins 2 (PGND) and 8 (GND) require separate analog/power ground routing per layout guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NC) | No Connect | Not internally bonded - must remain unconnected; no pull-up/down or routing required. |
| 2 (PGND) | Power Ground | Return path for high-current switch node (SW); requires dedicated low-impedance plane connected to GND only at single point near load. |
| 3 (SW) | Switch Node | Drain connection of internal P-MOSFET and N-MOSFET; routes directly to inductor; high dv/dt node requiring minimized trace length and area. |
| 4 (IN) | Input Supply | Main power source for P-MOSFET gate drive and internal circuitry; requires local 0.1 µF ceramic bypass capacitor to PGND. |
| 5 (FB) | Feedback Sense | High-impedance input (5 nA bias) monitoring output voltage divider; sensitive to noise - route away from SW and high-current paths. |
| 6 (COMP) | Compensation Node | Error amplifier output; connects to RC network (e.g., 100 kΩ + 150 pF) for loop stability - place components within 2 mm of pin. |
| 7 (SHDN) | Enable Control | Logic-compatible shutdown input; <0.4 V disables device (25 µA IQ), >VIN − 0.5 V enables; compatible with open-drain GPIOs. |
| 8 (GND) | Analog Ground | Reference for FB, COMP, and internal reference; connect to quiet analog ground plane, isolated from PGND except at single-point star ground. |
Key Features
| Feature | Design Value |
|---|---|
| Tri-Mode™ Operation | Automatically shifts from 550 kHz PWM → variable-frequency PWM → single-pulse mode to sustain >85% efficiency from 1 mA to 500 mA load. |
| Synchronous Rectification | Integrated N-channel MOSFET replaces external Schottky diode, eliminating 300–500 mV forward drop and associated heat generation. |
| 100% Duty Cycle Capability | Enables VOUT up to VIN − (ILOAD × 200 mΩ), supporting low-dropout regulation (e.g., 3.3 V out from 3.6 V input at 500 mA). |
| Current-Mode Control | Provides inherent cycle-by-cycle current limiting, fast transient response, and simplified loop compensation using single RC network. |
| Undervoltage Lockout (UVLO) | 2.2 V turn-on threshold with 55 mV hysteresis prevents erratic startup or brownout operation when input dips below 2.7 V minimum. |
Applications
| Li-ion Handheld Power Supply | MP3 Player Core Voltage Rail |
|---|---|
|
Use Scenario: Regulating 3.6 V nominal Li-ion battery to stable 1.2 V or 1.8 V for DSP and audio codec ICs in portable music players. IC Role / Device Role / Timing Role: Primary synchronous buck regulator delivering 500 mA with Tri-Mode™ efficiency optimization across playback (heavy load) and pause (light load) states. Use Value: Eliminates need for external Schottky diode and reduces thermal stress by 40% vs. asynchronous designs, extending battery runtime by 12% at 10 mA load. |
Use Scenario: Generating clean 3.3 V supply from 5 V USB input for flash memory interface and display driver in feature-rich MP3 players. IC Role / Device Role / Timing Role: Fixed-frequency PWM step-down converter operating at 550 kHz to minimize EMI in audio-sensitive signal chains. Use Value: Achieves <15 mV peak-to-peak output ripple with 10 µF MLCC output capacitor, meeting audio DAC PSRR requirements without additional LC filtering. |
| PDA System-on-Chip (SoC) Core Supply | Consumer Electronics Low-Power Logic Rail |
|
Use Scenario: Providing dynamically scalable 1.0 V–1.8 V core voltage to ARM-based application processors in palmtop PDAs with varying CPU load. IC Role / Device Role / Timing Role: Current-mode buck controller with external compensation enabling fast load transient response (<50 µs recovery) to processor burst activity. Use Value: Maintains ±1.5% output regulation during 100 mA → 500 mA load steps, preventing SoC reset or timing violations during clock frequency scaling. |
Use Scenario: Powering low-power microcontrollers, sensors, and LED drivers in battery-operated remote controls and smart home peripherals. IC Role / Device Role / Timing Role: Micropower shutdown regulator with 25 µA IQ enabling multi-year battery life in always-on sensing applications. Use Value: Reduces annual standby power consumption by 85% versus linear regulators, enabling CR2032 coin cell operation for >36 months at 10 µA average load. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62231DRVR | 3 MHz switching frequency, 300 mA output, 0.6 V reference, smaller 2-mm × 2-mm WSON package. | Better suited for space-constrained ultra-portable devices but lacks 500 mA capability and Tri-Mode™ light-load optimization. | Select when PCB area is critical and load current ≤300 mA; avoid if 100% duty cycle or >400 mA peak load required. |
| RT8059NGSP | 2.5 V–5.5 V input, 600 mA output, 1.5 MHz frequency, 0.6 V reference, requires external bootstrap capacitor. | Higher frequency enables smaller magnetics but adds complexity; no integrated synchronous rectifier gate drive for low-side FET. | Choose for cost-sensitive designs where external MOSFETs are acceptable; not drop-in due to different pinout and control architecture. |
Compared with TPS62231DRVR and RT8059NGSP, ADP3051ARMZ-REEL7 delivers higher output current (500 mA vs. 300/600 mA), superior light-load efficiency via Tri-Mode™, and true 100% duty cycle operation - making it optimal for Li-ion systems demanding wide-input, high-efficiency, and minimal external components.
Availability
ADP3051ARMZ-REEL7 is available at Aetrix Electronics and suitable for Li-ion powered handhelds, MP3 players, PDAs and palmtops, and consumer electronics requiring stable component supply with guaranteed long-term availability.
Supply support for ADP3051ARMZ-REEL7 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, industrial automation, communications, and automotive markets since 1965.
The ADP3051ARMZ-REEL7 belongs to Analog Devices' power management portfolio targeting portable and battery-operated systems, emphasizing high efficiency, small solution size, and robust operation across temperature and load extremes.
FAQ
What is the maximum output current capability of the ADP3051ARMZ-REEL7?
The ADP3051ARMZ-REEL7 delivers up to 500 mA continuous output current under typical conditions (TA = 25°C, VIN = 3.6 V). Its current limit threshold is specified at 680–1320 mA, providing headroom for transient peaks. Thermal derating applies above 85°C ambient, with θJA = 116°C/W on JEDEC 4-layer board ensuring safe operation at full load with adequate copper area.
Does the ADP3051ARMZ-REEL7 support 100% duty cycle operation, and what is its practical benefit?
Yes, the ADP3051ARMZ-REEL7 supports true 100% duty cycle operation, allowing VOUT to approach VIN minus ILOAD × RDS(ON). At 500 mA, dropout is typically 200 mV, enabling regulation from 3.6 V input to 3.3 V output without external LDO - reducing component count and improving system efficiency in battery-powered applications.
How does Tri-Mode™ operation improve efficiency across load conditions in the ADP3051ARMZ-REEL7?
Tri-Mode™ operation in the ADP3051ARMZ-REEL7 dynamically selects among fixed-frequency PWM (550 kHz), variable-frequency PWM, and single-pulse modes based on load. This avoids constant switching losses at light loads while maintaining tight regulation, achieving >85% efficiency from 1 mA to 500 mA - significantly outperforming standard PWM-only converters below 50 mA.
What are the recommended external components for a 3.3 V output from a 5 V input using the ADP3051ARMZ-REEL7?
For 5 V input to 3.3 V output at ≤500 mA, Analog Devices recommends: 10 µH inductor, 10 µF input ceramic capacitor (X5R/X7R), 10 µF output ceramic capacitor, feedback resistors RA = 12.5 kΩ and RB = 10 kΩ, and compensation network RC = 10 kΩ with C1 = 270 pF. These values target ~60 kHz crossover frequency and stable transient response per Table 4 of the datasheet.
Can the ADP3051ARMZ-REEL7 be used with a 2.5 V input supply, and what is the minimum supported input voltage?
Yes, the ADP3051ARMZ-REEL7 operates with input voltages as low as 2.7 V per absolute specifications. A 2.5 V input falls below the 2.7 V minimum and risks UVLO activation (2.2 V threshold) or unstable regulation. For 2.5 V systems, consider alternative regulators like the ADP2300 or verify actual battery discharge profile - nominal Li-ion (3.0–4.2 V) remains well within the ADP3051ARMZ-REEL7's validated range.
ADP3051ARMZ-REEL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- *
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Function:
- -
- Output Configuration:
- -
- Topology:
- -
- Output Type:
- -
- Number of Outputs:
- -
- Voltage - Input (Min):
- -
- Voltage - Input (Max):
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Current - Output:
- -
- Frequency - Switching:
- -
- Synchronous Rectifier:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP
ADP3051ARMZ-REEL7 FAQ
1.How can I place an order for ADP3051ARMZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP3051ARMZ-REEL7 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 ADP3051ARMZ-REEL7 reliable?
The price and inventory of ADP3051ARMZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP3051ARMZ-REEL7 is usually 5 days.
3.What payment methods are accepted for ADP3051ARMZ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP3051ARMZ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP3051ARMZ-REEL7?
ADP3051ARMZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP3051ARMZ-REEL7 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 ADP3051ARMZ-REEL7?
For technical support, including ADP3051ARMZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP3051ARMZ-REEL7 requirements.
6.How does Aetrix verify that ADP3051ARMZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All ADP3051ARMZ-REEL7 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 ADP3051ARMZ-REEL7 meets industry standards.
7.What is the process for return or replacement of ADP3051ARMZ-REEL7?
All ADP3051ARMZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADP3051ARMZ-REEL7, 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 ADP3051ARMZ-REEL7 part is unused and in its original packaging.
Return procedure for ADP3051ARMZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADP3051ARMZ-REEL7 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…
