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Analog Devices Inc. ADP1612ARMZ-R7
- Part No.:
- ADP1612ARMZ-R7
- Manufacturer:
- Analog Devices Inc.
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
ADP1612ARMZ-R7.pdf
- Description:
- IC REG BST SEPIC ADJ 1.4A 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:6,074
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Product details
Overview
ADP1612ARMZ-R7 from Analog Devices is a current-mode PWM step-up DC-DC switching converter with integrated 1.4 A power switch, pin-selectable 650 kHz or 1.3 MHz switching frequency, 1.8 V to 5.5 V input range, and adjustable output up to 20 V. It delivers high efficiency (up to 94%) in space-constrained TFT LCD bias supplies and portable instrumentation.
For engineers reviewing the ADP1612ARMZ-R7 datasheet, ADP1612ARMZ-R7 pinout, ADP1612ARMZ-R7 application, or ADP1612ARMZ-R7 equivalent, key selection criteria include minimum input voltage (1.8 V), peak switch current limit (1.4 A typ), feedback reference (1.235 V), soft-start capacitor control, and MSOP-8 thermal performance under load transients.
Technical Context
The ADP1612ARMZ-R7 employs current-mode PWM control with internal transconductance error amplifier (Gm = 80 µA/V) and slope compensation for stability at high duty cycles. Its 1.235 V precision feedback reference enables accurate output regulation across temperature and line variations.
Pin-selectable oscillator (FREQ pin tied to GND or VIN) sets switching frequency to 650 kHz for efficiency optimization or 1.3 MHz for compact external component sizing. Undervoltage lockout (UVLO rising threshold = 1.70 V) and thermal shutdown (150°C trip, 20°C hysteresis) ensure robust operation in portable and industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.8 V to 5.5 V - supports single-cell Li-ion, NiMH, and 3.3 V/5 V system rails |
| Output Voltage Range | Adjustable up to 20 V - set via external resistor divider on FB pin |
| Switch Current Limit | 1.4 A typical - limits peak inductor current to prevent saturation and thermal overload |
| Feedback Reference | 1.235 V ±20 mV - determines output accuracy; used with R1/R2 to calculate VOUT = 1.235 × (1 + R1/R2) |
| Switching Frequency | 650 kHz or 1.3 MHz - selected by FREQ pin; higher frequency allows smaller L/C but increases switching loss |
| Quiescent Current | 700–1350 µA (nonswitching) - enables low-power standby in battery-operated systems |
| Efficiency | Up to 94% - achieved at mid-load with optimized inductor and diode selection |
Pinout & Package
ADP1612ARMZ-R7 is housed in an 8-lead MSOP package (3.0 mm × 3.0 mm × 1.1 mm height), optimized for thin-profile applications including portable displays and handheld instruments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - COMP | Compensation node | Connect RC network to GND to stabilize loop response; critical for transient immunity and phase margin |
| 2 - FB | Feedback input | Senses output voltage divider; internal 1.235 V reference sets regulation point |
| 3 - EN | Enable control | Logic-level input: <0.3 V = shutdown (IQSHDN = 0.01 µA), >1.6 V = active |
| 4 - GND | Power and signal ground | Common return for internal circuitry, SW node path, and external components |
| 5 - SW | Switching node | Drives external inductor; carries pulsed current up to 1.4 A; requires low-inductance layout |
| 6 - VIN | Main power input | Supplies internal bias and gate drive; must be bypassed with ≥10 µF ceramic capacitor near pin |
| 7 - FREQ | Frequency select | Tie to GND = 650 kHz; tie to VIN = 1.3 MHz; floating defaults to 650 kHz |
| 8 - SS | Soft-start timing | Capacitor to GND sets startup ramp time; 5 µA current charges CSS to 1.2 V to limit inrush |
Key Features
| Feature | Design Value |
|---|---|
| Pin-selectable switching frequency | 650 kHz or 1.3 MHz - enables trade-off between efficiency and component size without redesign |
| Adjustable soft start | External capacitor controls output ramp rate - prevents input inrush and reduces stress on input capacitors |
| Integrated 1.4 A power switch | Low RDS(ON) (130–300 mΩ) - minimizes conduction loss and eliminates need for external MOSFET |
| Current-mode PWM architecture | Fast transient response with inherent cycle-by-cycle current limiting - improves reliability under short-circuit or overload |
| Thermal shutdown with hysteresis | 150°C trip / 130°C recovery - protects die during sustained overload while avoiding thermal oscillation |
Applications
| TFT LCD Bias Supply | Portable Instrumentation |
|---|---|
Use Scenario: Generating AVDD (12–18 V) and VGH (15–20 V) rails for active-matrix TFT panels in handheld medical monitors and industrial HMIs. IC Role / Device Role / Timing Role: Step-up regulator providing stable, low-noise high-voltage bias with fast load-step response to pixel charging demands. Use Value: Compact MSOP-8 footprint and 1.1 mm height enable integration behind thin display bezels; 650 kHz mode maximizes efficiency during static display periods. | Use Scenario: Powering analog front-ends and sensor interfaces in battery-powered multimeters and data loggers requiring >5 V supply from 3.3 V or single-cell sources. IC Role / Device Role / Timing Role: High-efficiency boost converter delivering regulated 12 V for op-amp rails and ADC references. Use Value: 1.8 V minimum input extends battery life; UVLO (1.70 V) prevents erratic behavior near end-of-discharge; EN pin enables microcontroller-controlled power gating. |
| Industrial Sensor Node | Wearable Health Monitor |
Use Scenario: Supplying 5 V or 12 V to isolated RS-485 transceivers and signal-conditioning circuits in factory-floor sensor nodes operating from 24 V field buses or local 3.3 V rails. IC Role / Device Role / Timing Role: Robust DC-DC stage with thermal shutdown and undervoltage lockout for unattended operation in variable-temperature environments. Use Value: 150°C TSD and −40°C to +125°C junction rating ensure reliability in harsh enclosures; 1.3 MHz option allows miniaturized 4.7 µH inductors for dense PCB layouts. | Use Scenario: Boosting voltage for OLED display drivers and optical heart-rate sensors in compact wearable devices powered by coin-cell or polymer lithium batteries. IC Role / Device Role / Timing Role: Low-quiescent-current (700 µA) step-up regulator enabling long standby time and controlled wake-up sequencing. Use Value: Soft-start (SS pin) prevents current spikes during BLE radio wake-up events; small MSOP-8 package fits within tight mechanical constraints of wrist-worn form factors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-up converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61088RHLR | Higher 5-A switch current, fixed 500-kHz/2-MHz options, wider 2.7–12-V input range | Better suited for high-current loads (>1 A); less suitable for sub-2-V input or ultra-low-IQ designs | Select when output current exceeds 1.4 A or input voltage consistently >2.7 V |
| MAX17222ETA+ | Lower 0.5-A switch current, 1.2-MHz fixed frequency, 0.4-V minimum input, 1.6-µA IQ in shutdown | Optimized for ultra-low-power coin-cell applications; insufficient for >500-mA loads | Select when input voltage is <1.8 V or quiescent current below 1 µA is mandatory |
Compared with TPS61088RHLR and MAX17222ETA+, ADP1612ARMZ-R7 uniquely balances 1.4-A capability, 1.8-V minimum input, and MSOP-8 footprint-making it optimal for mid-power portable displays and instrumentation where efficiency, size, and low-voltage start-up are jointly critical.
Availability
ADP1612ARMZ-R7 is available at Aetrix Electronics and suitable for TFT LCD bias supplies, portable instrumentation, and industrial sensor nodes requiring stable component supply with full traceability and lifecycle support.
Supply support for ADP1612ARMZ-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, industrial, communications, and automotive markets.
The ADP1612ARMZ-R7 belongs to Analog Devices' high-efficiency, low-voltage boost converter product line, designed specifically for space-constrained portable and display applications demanding reliable high-voltage generation from single-cell sources.
FAQ
What is the minimum input voltage required for ADP1612ARMZ-R7 to operate?
The ADP1612ARMZ-R7 has a guaranteed minimum input voltage of 1.8 V, with undervoltage lockout (UVLO) releasing at 1.70 V (rising) and re-engaging at 1.62 V (falling). This enables reliable start-up from partially discharged single-cell Li-ion or NiMH batteries. Operation below 1.8 V is not specified and may result in unstable regulation or shutdown. The ADP1612ARMZ-R7 datasheet confirms this limit across −40°C to +125°C junction temperature.
How do I set the output voltage for ADP1612ARMZ-R7?
The output voltage of ADP1612ARMZ-R7 is set using a resistive divider from VOUT to the FB pin, based on the internal 1.235 V reference. Use VOUT = 1.235 × (1 + R1/R2), where R2 connects FB to GND and R1 connects VOUT to FB. For example, to achieve 12 V, select R2 = 100 kΩ and R1 ≈ 870 kΩ. The ADP1612ARMZ-R7 datasheet specifies ±20 mV tolerance on VFB, directly impacting output accuracy.
What is the purpose of the FREQ pin on ADP1612ARMZ-R7?
The FREQ pin on ADP1612ARMZ-R7 selects the internal oscillator frequency: tie to GND for 650 kHz (optimized for efficiency), tie to VIN for 1.3 MHz (enabling smaller inductors and capacitors), or leave floating for default 650 kHz operation. At 1.3 MHz, quiescent current increases by ~5 µA. The ADP1612ARMZ-R7 datasheet confirms frequency tolerances of ±10% at 650 kHz and ±7% at 1.3 MHz over temperature and input voltage.
Does ADP1612ARMZ-R7 include thermal protection?
Yes, ADP1612ARMZ-R7 integrates thermal shutdown (TSD) that disables the power switch when junction temperature exceeds 150°C (typical), with 20°C hysteresis ensuring recovery only after cooling to ~130°C. During TSD, the SS pin is shorted to GND to discharge the soft-start capacitor, preventing output overshoot upon resumption. This protection is fully specified in the ADP1612ARMZ-R7 absolute maximum ratings and thermal characteristics sections.
Can ADP1612ARMZ-R7 be used in discontinuous conduction mode (DCM)?
Yes, ADP1612ARMZ-R7 operates reliably in both continuous (CCM) and discontinuous (DCM) conduction modes. Its current-mode PWM architecture maintains stability across modes, and Figure 28 of the ADP1612ARMZ-R7 datasheet explicitly shows DCM waveforms (inductor current reaching zero). Mode selection depends on inductor value, load current, and switching frequency - lower loads or higher frequencies favor DCM, reducing light-load ripple and improving efficiency at partial load.
ADP1612ARMZ-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost, SEPIC
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 1.8V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.8V
- Voltage - Output (Max):
- 20V
- Current - Output:
- 1.4A (Switch)
- Frequency - Switching:
- 650kHz, 1.3MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP
ADP1612ARMZ-R7 FAQ
1.How can I place an order for ADP1612ARMZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP1612ARMZ-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 ADP1612ARMZ-R7 reliable?
The price and inventory of ADP1612ARMZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP1612ARMZ-R7 is usually 5 days.
3.What payment methods are accepted for ADP1612ARMZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP1612ARMZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP1612ARMZ-R7?
ADP1612ARMZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP1612ARMZ-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 ADP1612ARMZ-R7?
For technical support, including ADP1612ARMZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP1612ARMZ-R7 requirements.
6.How does Aetrix verify that ADP1612ARMZ-R7 is sourced from the original manufacturer or authorized distributors?
All ADP1612ARMZ-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 ADP1612ARMZ-R7 meets industry standards.
7.What is the process for return or replacement of ADP1612ARMZ-R7?
All ADP1612ARMZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADP1612ARMZ-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 ADP1612ARMZ-R7 part is unused and in its original packaging.
Return procedure for ADP1612ARMZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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