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Analog Devices Inc. ADP1611ARMZ-R7
- Part No.:
- ADP1611ARMZ-R7
- Manufacturer:
- Analog Devices Inc.
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
ADP1611ARMZ-R7.pdf
- Description:
- IC CONV DC-DC STEP UP SW 8-MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,105
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Product details
Overview
ADP1611ARMZ-R7 from Analog Devices is a 2.5 V to 5.5 V input, adjustable-output (up to 20 V) step-up DC-DC switching converter with integrated 1.2 A/0.23 Ω power switch, pin-selectable 700 kHz or 1.2 MHz PWM frequency, and 3% output regulation accuracy-designed for TFT LCD bias supplies in space-constrained portable displays.
For engineers reviewing the ADP1611ARMZ-R7 datasheet, ADP1611ARMZ-R7 pinout, ADP1611ARMZ-R7 application, or ADP1611ARMZ-R7 equivalent, key selection criteria include input voltage range (2.5–5.5 V), maximum output voltage (20 V), soft-start programmability, undervoltage lockout threshold (2.4 V), and MSOP-8 thermal performance (θJA = 142°C/W on 4-layer board).
Technical Context
The ADP1611ARMZ-R7 employs current-mode PWM control with internal transconductance error amplifier (gm = 100 µA/V) and ramp compensation to ensure stable regulation across line, load, and temperature. Its feedback reference is tightly specified at 1.230 V ±18 mV over −40°C to +85°C.
Switching frequency is selected via RT pin: grounded for 700 kHz (optimized efficiency), tied to IN for 1.2 MHz (enabling smaller inductors like 4.7 µH). Peak current limit is fixed at 2.0 A, and maximum duty cycle reaches 90% at low VIN/high VOUT conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5 V to 5.5 V - supports single-cell Li-ion (3.0–4.2 V) and dual-cell alkaline (2.4–3.2 V) inputs without pre-regulation. |
| Output Voltage Range | Adjustable from VIN to 20 V - set via external resistor divider; enables TFT LCD positive/negative bias rails (e.g., +15 V, −5 V, +22 V). |
| Switch RDS(on) | 230 mΩ typical - limits conduction loss at 1.2 A, enabling >90% peak efficiency at 5 VIN/15 VOUT. |
| Feedback Reference | 1.230 V ±18 mV - determines output accuracy; combined with 1% resistors yields ≤3% overall VOUT tolerance. |
| Quiescent Current | 390 µA typical (nonswitching) - ensures low standby power in battery-powered portable equipment. |
| UVLO Threshold | 2.4 V rising - prevents erratic startup below minimum cell voltage; 220 mV hysteresis avoids oscillation near cutoff. |
| Soft-Start Current | 3 µA - charges external SS capacitor linearly, controlling inrush current ramp rate without external circuitry. |
Pinout & Package
ADP1611ARMZ-R7 is housed in a Pb-free, thermally enhanced 8-lead MSOP package (3.0 mm × 3.0 mm × 1.1 mm height), optimized for high-density PCB layouts in portable electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - COMP | Compensation node | Connects external RC network to stabilize loop; sets crossover frequency and phase margin for transient response. |
| 2 - FB | Feedback input | Senses output voltage divider; 10 nA bias current requires R2 ≤ 10 kΩ to minimize regulation error. |
| 3 - SD | Shutdown control | Logic-level input: <0.6 V disables regulator (IQSD ≤ 10 µA); >2.2 V enables operation. |
| 4 - GND | Power and signal ground | Common return for internal bias, error amp, and switch driver; must be low-impedance plane. |
| 5 - SW | Switching node | Drives external inductor; carries pulsed 1.2 A peak current; requires tight layout to minimize EMI and voltage spikes. |
| 6 - IN | Main power input | Supplies internal circuitry and switch driver; bypass with ≥10 µF ceramic capacitor placed adjacent to pin. |
| 7 - RT | Frequency select | Ground = 700 kHz; connect to IN = 1.2 MHz - selects trade-off between efficiency and component size. |
| 8 - SS | Soft-start timing | Internal 3 µA current source charges external capacitor; controls startup current slew rate and peak inrush. |
Key Features
| Feature | Design Value |
|---|---|
| Fully integrated 1.2 A power switch | Eliminates external MOSFET and gate driver; reduces BOM count and layout area in compact designs. |
| Pin-selectable switching frequency | Enables optimization: 700 kHz for highest efficiency (>90%), 1.2 MHz for smallest inductors (e.g., 4.7 µH vs. 10 µH). |
| Adjustable soft start | Prevents input inrush by limiting peak switch current during startup; programmable via single capacitor (e.g., 20 nF = 0.4 ms). |
| Input undervoltage lockout | Ensures clean startup only above 2.4 V; 220 mV hysteresis prevents cycling near battery depletion. |
| 90% peak efficiency | Validated at 5 VIN/15 VOUT/400 mA with 1.2 MHz switching and 4.7 µH inductor - extends battery runtime. |
Applications
| TFT LCD Bias Supply | Portable Medical Instrumentation |
|---|---|
Use Scenario: Powering gate-on/gate-off voltages (+15 V, −10 V) and source driver rails (+22 V) in active-matrix TFT-LCD modules for handheld ultrasound or diagnostic displays. IC Role / Device Role / Timing Role: Primary step-up controller generating regulated high-voltage rails from single 3.7 V Li-ion cell; operates in continuous conduction mode with 1.2 MHz switching. Use Value: Enables ultra-thin display stacks (<1.1 mm package height) while maintaining 3% output regulation across temperature and load variations. | Use Scenario: Providing isolated analog front-end bias (±5 V, +12 V) and digital core supply (3.3 V) in portable ECG or pulse oximeter units with strict battery life targets. IC Role / Device Role / Timing Role: High-efficiency boost converter delivering stable 12 V rail to op-amp bias networks and ADC reference circuits from 3.3 V system rail. Use Value: Achieves >88% efficiency at 100 mA load with 1.2 MHz operation, reducing heat rise and extending 200-hour field deployment. |
| Industrial Sensor Node Power | Wearable Health Monitor |
Use Scenario: Generating 5 V or 9 V supply for low-power wireless sensor transceivers (e.g., sub-GHz RF ICs) deployed in remote industrial IoT nodes powered by primary lithium batteries. IC Role / Device Role / Timing Role: Always-on boost regulator with shutdown current <10 µA; activated only during sensor readout and transmission bursts. Use Value: Quiescent current of 390 µA (nonswitching) and 0.01 µA shutdown state enable multi-year battery life on CR2032 cells. | Use Scenario: Supplying 3.3 V or 5 V to optical heart-rate sensors and BLE SoCs in wrist-worn fitness trackers where PCB area and thermal profile are critical constraints. IC Role / Device Role / Timing Role: Compact, high-frequency (1.2 MHz) boost stage operating from 2.8–3.6 V coin-cell input; synchronized to sensor sampling intervals. Use Value: MSOP-8 footprint (3.0 × 3.0 mm) and 1.1 mm height allow integration beneath curved OLED display bezels without mechanical interference. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-up DC-DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61088RHLR | Higher 2.5 A switch current; fixed 570 kHz/1.2 MHz dual-frequency option; no UVLO hysteresis spec. | Better suited for >1 A loads; lacks programmable soft-start slope; requires different compensation design. | Select TPS61088RHLR when output current exceeds 600 mA or when higher peak efficiency at light loads is required. |
| MAX17222ETA+ | Lower 0.5 A switch rating; 1.2 MHz fixed frequency; 1.8 V min input; no RT pin for frequency selection. | Optimized for ultra-low-input systems (e.g., single NiMH); unsuitable for 20 V output or >400 mA loads. | Choose MAX17222ETA+ only for sub-3 V input, low-current (<200 mA), space-critical applications where 20 V output is not needed. |
Compared with TPS61088RHLR and MAX17222ETA+, ADP1611ARMZ-R7 uniquely balances 20 V capability, 1.2 A switch, pin-selectable frequency, and precise 2.4 V UVLO with hysteresis-making it optimal for TFT LCD bias where voltage range, regulation accuracy, and thermal density are jointly critical.
Availability
ADP1611ARMZ-R7 is available at Aetrix Electronics and suitable for TFT LCD bias supplies, portable medical instrumentation, industrial sensor nodes, and wearable health monitors requiring stable component supply with guaranteed long-term manufacturability.
Supply support for ADP1611ARMZ-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, and industrial markets since 1965.
The ADP1611ARMZ-R7 belongs to Analog Devices' high-efficiency, high-voltage boost converter product line-designed specifically for space-constrained, battery-powered applications demanding wide output voltage range and tight regulation.
FAQ
What is the maximum output voltage supported by the ADP1611ARMZ-R7?
The ADP1611ARMZ-R7 supports an adjustable output voltage up to 20 V, set using an external resistor divider from VOUT to the FB pin. This capability is confirmed in the General Description and Specifications sections of the Rev. 0 datasheet, where VOUT is explicitly rated "VIN to 20 V" under operating conditions.
How does the RT pin configure switching frequency on the ADP1611ARMZ-R7?
The RT pin on the ADP1611ARMZ-R7 selects between two fixed frequencies: connecting RT to GND sets 700 kHz (optimized for efficiency), while connecting RT to IN sets 1.2 MHz (optimized for small external components). This is documented in Table 1 (Oscillator Frequency) and the Frequency Selection section of the datasheet.
What is the purpose of the SS pin on the ADP1611ARMZ-R7, and how is it used?
The SS pin on the ADP1611ARMZ-R7 accepts an external capacitor to control soft-start duration. An internal 3 µA current source charges the capacitor, linearly ramping COMP voltage to limit inrush current. A 20 nF capacitor yields ~0.4 ms startup time, as shown in Table 8 of the datasheet.
Does the ADP1611ARMZ-R7 include undervoltage lockout, and what are its thresholds?
Yes, the ADP1611ARMZ-R7 includes input undervoltage lockout (UVLO) with a rising threshold of 2.4 V and 220 mV hysteresis. This prevents unstable operation during brown-out conditions and is guaranteed across temperature per Table 1 and Absolute Maximum Ratings.
What package type and dimensions does the ADP1611ARMZ-R7 use?
The ADP1611ARMZ-R7 uses an 8-lead MSOP package measuring 3.0 mm × 3.0 mm × 1.1 mm height. This is specified in the Ordering Guide and Outline Dimensions sections of the Rev. 0 datasheet, and confirmed as Pb-free and RoHS-compliant.
ADP1611ARMZ-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- *
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Cut Tape (CT)
- 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
ADP1611ARMZ-R7 FAQ
1.How can I place an order for ADP1611ARMZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP1611ARMZ-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 ADP1611ARMZ-R7 reliable?
The price and inventory of ADP1611ARMZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP1611ARMZ-R7 is usually 5 days.
3.What payment methods are accepted for ADP1611ARMZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP1611ARMZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP1611ARMZ-R7?
ADP1611ARMZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP1611ARMZ-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 ADP1611ARMZ-R7?
For technical support, including ADP1611ARMZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP1611ARMZ-R7 requirements.
6.How does Aetrix verify that ADP1611ARMZ-R7 is sourced from the original manufacturer or authorized distributors?
All ADP1611ARMZ-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 ADP1611ARMZ-R7 meets industry standards.
7.What is the process for return or replacement of ADP1611ARMZ-R7?
All ADP1611ARMZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADP1611ARMZ-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 ADP1611ARMZ-R7 part is unused and in its original packaging.
Return procedure for ADP1611ARMZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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