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Analog Devices Inc. ADM8828ARTZ-REEL
- Part No.:
- ADM8828ARTZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Package:
- SOT-23-6
- Datasheet:
-
ADM8828ARTZ-REEL.pdf
- Description:
- IC REG CHARGE PUMP 25MA SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,910
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Product details
Overview
ADM8828ARTZ-REEL from Analog Devices is a switched-capacitor voltage inverter IC that generates a regulated negative output from a +1.5 V to +5.5 V positive input, delivering up to 25 mA with 99.5% voltage conversion efficiency and 20 nA shutdown current. It features a dedicated SHDN pin, requires only two 1 µF low-ESR capacitors, and operates in a 6-lead SOT-23 package for space-constrained op amp power supplies and portable instrumentation.
For engineers reviewing the ADM8828ARTZ-REEL datasheet, ADM8828ARTZ-REEL pinout, ADM8828ARTZ-REEL application, or ADM8828ARTZ-REEL equivalent, key selection criteria include input voltage range compatibility, shutdown quiescent current, output resistance at load, charge-pump frequency stability over temperature, and SOT-23 footprint constraints in dual-rail analog designs.
Technical Context
The ADM8828ARTZ-REEL implements a two-phase switched-capacitor inversion topology using internal MOSFET switches controlled by an on-chip oscillator (50–190 kHz). It transfers charge between external flying (C1) and output (C2) capacitors to produce a precise inverted output referenced to GND.
Its shutdown function disables the oscillator and switching network, reducing supply current to 20 nA while allowing fast wake-up (175 µs exit time). The device's output resistance (18 Ω typ. at 5 mA) and ripple performance (25 mV p-p at 5 mA) are directly dependent on capacitor ESR and value, not internal regulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | +1.5 V to +5.5 V - supports single-cell Li-ion, alkaline, and regulated 3.3 V/5 V rails without external LDO pre-regulation. |
| Output Current | 25 mA - sufficient to power dual op amps or small analog front-ends requiring split supplies. |
| Voltage Conversion Efficiency | 99.5% (typ., no load) - minimizes heat generation and extends battery life in portable systems. |
| Shutdown Current | 20 nA - enables ultra-low-power sleep modes in handheld instruments and remote sensors. |
| Output Resistance | 18 Ω (typ., IL = 5 mA) - determines load regulation error and maximum usable output current before excessive droop. |
| Charge-Pump Frequency | 65 kHz (at VIN = +2.25 V), up to 190 kHz - sets minimum capacitor size and ripple frequency for filtering design. |
| Output Ripple | 25 mV p-p (IL = 5 mA) - defines noise floor impact on sensitive analog circuitry like ADC references or precision amplifiers. |
Pinout & Package
ADM8828ARTZ-REEL is housed in a RoHS-compliant 6-lead SOT-23 package (JEDEC MO-178-AB, package option RJ-6), with 1.9 mm × 2.9 mm footprint and 1.3 mm height, optimized for high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Negative output terminal | Delivers inverted voltage rail; must be decoupled with C2 to minimize ripple and source transient current. |
| 2 - IN | Positive input supply | Accepts unregulated or regulated DC input; bypass capacitor recommended for dynamic current demands. |
| 3 - CAP− | Negative flying capacitor node | Connects to negative terminal of flying capacitor C1; critical path for charge transfer integrity. |
| 4 - GND | Power ground reference | Common return for input, output, and internal oscillator; must be low-impedance connection. |
| 5 - CAP+ | Positive flying capacitor node | Connects to positive terminal of flying capacitor C1; forms core charge-transfer loop with CAP−. |
| 6 - SHDN | Active-low shutdown control | Pulled low to enable; ≥2.0 V disables device and reduces IQ to 20 nA; open or floating defaults to enabled. |
Key Features
| Feature | Design Value |
|---|---|
| Inverting charge-pump architecture | Generates clean negative rail without inductors-eliminates EMI concerns and simplifies layout vs. inductive DC/DC converters. |
| Ultra-low shutdown current | 20 nA enables >10-year battery life in always-on sensor nodes when paired with microcontroller-controlled shutdown sequencing. |
| Single-supply operation | Operates down to +1.5 V input-supports coin-cell (CR2032) and single-AA/AAA systems without boost preprocessing. |
| Minimal external components | Only two 1 µF electrolytic capacitors required-reduces BOM count, board area, and assembly cost versus multi-stage solutions. |
| High conversion efficiency | 99.5% no-load efficiency preserves input energy and avoids thermal derating in sealed enclosures. |
Applications
| Op Amp Dual-Supply Generation | Handheld Instrument Power |
|---|---|
Use Scenario: Providing ±2.5 V rails for rail-to-rail input/output op amps in portable multimeters and data loggers. IC Role / Device Role / Timing Role: Voltage inverter generating stable negative supply from single 3.3 V or 5 V system rail. Use Value: Enables true bipolar signal conditioning without inductor-based converters, reducing size and EMI in handheld enclosures. |
Use Scenario: Powering LCD bias and analog front-end in battery-operated handheld test equipment. IC Role / Device Role / Timing Role: Compact negative voltage source supporting display contrast control and sensor signal conditioning. Use Value: 25 mA output and 20 nA shutdown current extend operating time between battery charges in intermittent-use instruments. |
| Cellular Phone Audio Bias | Remote Data Acquisition Node |
Use Scenario: Generating negative bias for MEMS microphone preamplifiers and audio codec line drivers in legacy GSM handsets. IC Role / Device Role / Timing Role: Low-noise inverter supplying clean –1.8 V to –2.5 V for analog audio signal paths. Use Value: 25 mV p-p ripple at 5 mA ensures SNR > 90 dB in audio chains without additional LDO post-regulation. |
Use Scenario: Supplying isolated negative rail for RS-485 transceivers and sensor excitation in solar-powered field nodes. IC Role / Device Role / Timing Role: Efficient voltage inversion enabling full-duplex communication with minimal quiescent draw. Use Value: 600 µA typical supply current and 20 nA shutdown allow multi-year deployment on primary lithium batteries. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage inverter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX680ESA+ | Higher 100 mA output, but 120 µA quiescent current and no shutdown pin; requires 10 µF capacitors. | Better for high-current analog loads; unsuitable for ultra-low-power sleep modes. | Select MAX680ESA+ only when >25 mA output is required and shutdown functionality is unnecessary. |
| TPS60403DBVR | 3.3 V fixed output (non-inverting), 60 mA output, 120 µA IQ, integrated soft-start; no adjustable inversion. | Designed for fixed positive charge-pump outputs-not a functional substitute for negative rail generation. | TPS60403DBVR is not a direct alternative; use only if system redesign allows positive-only auxiliary rail instead of true inversion. |
Compared with MAX680ESA+ and TPS60403DBVR, the ADM8828ARTZ-REEL uniquely balances ultra-low shutdown current (20 nA), true input-voltage-tracked inversion (–VIN), and minimal component count-making it optimal for battery-critical, space-constrained negative rail generation where efficiency and quiescent power dominate selection.
Availability
ADM8828ARTZ-REEL is available at Aetrix Electronics and suitable for handheld instruments, LCD panels, and op amp power supplies requiring stable component supply, consistent parametric performance across temperature, and long-term industrial lifecycle support.
Supply support for ADM8828ARTZ-REEL 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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, industrial automation, and communications markets since 1965.
The ADM8828ARTZ-REEL belongs to Analog Devices' switched-capacitor power management product line, engineered specifically for compact, low-noise, inductorless negative voltage generation in portable and battery-powered analog systems.
FAQ
What is the absolute maximum input voltage rating for the ADM8828ARTZ-REEL?
The ADM8828ARTZ-REEL has an absolute maximum input voltage of +6 V (IN to GND). Operation above +5.5 V violates the recommended operating conditions and may cause irreversible damage or accelerated degradation. For reliable long-term use, the input must remain within the specified +1.5 V to +5.5 V range per the datasheet.
Does the ADM8828ARTZ-REEL require external resistors for feedback or regulation?
No, the ADM8828ARTZ-REEL does not require external feedback resistors. It is a fixed-ratio inverter: the output voltage equals the negative of the input voltage (VOUT ≈ –VIN), with no internal regulation loop. Output accuracy depends solely on input stability, capacitor ESR, and load current-no resistor network is needed or supported.
Can the ADM8828ARTZ-REEL drive a 100 Ω load continuously?
No, the ADM8828ARTZ-REEL is rated for 25 mA continuous output current. Driving a 100 Ω load from –5 V would demand 50 mA (|–5 V| / 100 Ω), exceeding its safe operating limit. At 25 mA, output resistance is ~18 Ω, causing ~0.45 V droop-so sustained loading beyond 25 mA risks thermal overload and voltage collapse.
What capacitor types are recommended for use with the ADM8828ARTZ-REEL?
Analog Devices specifies low-ESR (<0.2 Ω) electrolytic capacitors (1 µF each) for C1 (flying) and C2 (output). Tantalum or polymer aluminum electrolytics meet this requirement. Ceramic capacitors are not recommended due to microphonic effects and insufficient capacitance retention under DC bias at required voltage ratings.
Is the ADM8828ARTZ-REEL pin-compatible with the ADM8829ARTZ-REEL?
No, the ADM8828ARTZ-REEL and ADM8829ARTZ-REEL are not pin-compatible. The ADM8828ARTZ-REEL uses Pin 6 for SHDN and Pin 3 for CAP−, whereas the ADM8829ARTZ-REEL replaces SHDN with NC and relocates CAP− to Pin 6. Swapping them without PCB revision will result in incorrect functionality or failure to invert.
ADM8828ARTZ-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Ratiometric
- Output Configuration:
- Negative
- Topology:
- Charge Pump
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 1.5V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- -Vin
- Voltage - Output (Max):
- -
- Current - Output:
- 25mA
- Frequency - Switching:
- 120kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
ADM8828ARTZ-REEL FAQ
1.How can I place an order for ADM8828ARTZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM8828ARTZ-REEL 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 ADM8828ARTZ-REEL reliable?
The price and inventory of ADM8828ARTZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM8828ARTZ-REEL is usually 5 days.
3.What payment methods are accepted for ADM8828ARTZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM8828ARTZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM8828ARTZ-REEL?
ADM8828ARTZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM8828ARTZ-REEL 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 ADM8828ARTZ-REEL?
For technical support, including ADM8828ARTZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM8828ARTZ-REEL requirements.
6.How does Aetrix verify that ADM8828ARTZ-REEL is sourced from the original manufacturer or authorized distributors?
All ADM8828ARTZ-REEL 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 ADM8828ARTZ-REEL meets industry standards.
7.What is the process for return or replacement of ADM8828ARTZ-REEL?
All ADM8828ARTZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with ADM8828ARTZ-REEL, 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 ADM8828ARTZ-REEL part is unused and in its original packaging.
Return procedure for ADM8828ARTZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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