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Analog Devices Inc. ADP1614ACPZ-650-R7
- Part No.:
- ADP1614ACPZ-650-R7
- Manufacturer:
- Analog Devices Inc.
- Package:
- 10-VFDFN Exposed Pad, CSP
- Datasheet:
-
ADP1614ACPZ-650-R7.pdf
- Description:
- IC REG BOOST ADJ 4A 10LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:1,473
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Product details
Overview
ADP1614ACPZ-650-R7 from Analog Devices is a 650 kHz, current-mode PWM step-up DC-to-DC switching converter with integrated 100 mΩ NMOS switch, adjustable peak current limit up to 4 A via external resistor on CLRES pin, 2.5 V to 5.5 V input range, and output voltage adjustable up to 20 V. It delivers high efficiency (up to 94%) in TFT LCD bias supplies and portable power rails where compact size and controlled inrush are critical.
For engineers reviewing the ADP1614ACPZ-650-R7 datasheet, ADP1614ACPZ-650-R7 pinout, ADP1614ACPZ-650-R7 application, or ADP1614ACPZ-650-R7 equivalent, this page provides verified technical context, validated pin functions, confirmed 650 kHz fixed-frequency operation, real-world efficiency curves at VIN = 3.6 V/5 V, and precise soft-start capacitor sizing guidance for controlled startup in space-constrained designs.
Technical Context
The ADP1614ACPZ-650-R7 implements current-mode PWM control with internal transconductance error amplifier (Gm = 150 µA/V), 1.245 V feedback reference, and pulse-by-pulse switch current sensing referenced to the CLRES pin. Its oscillator is factory-trimmed to 650 kHz ±120 kHz across −40°C to +125°C, with no FREQ pin configuration required - unlike the R7 variant.
This variant uses fixed 650 kHz operation to optimize efficiency over wide load ranges (e.g., 85–94% at 10–100 mA with VOUT = 15 V, VIN = 5 V), while maintaining <92% maximum duty cycle and enabling use of 4.7–15 µH inductors. Thermal shutdown triggers at 150°C with 20°C hysteresis, and undervoltage lockout activates below 2.33 V (rising) with 0.3 V hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 650 kHz fixed - enables optimal efficiency vs. 1.3 MHz variants and supports smaller EMI filtering with predictable fundamental tone. |
| Input Voltage Range | 2.5 V to 5.5 V - compatible with single-cell Li-ion (3.0–4.2 V), USB 5 V, and dual-cell alkaline inputs without pre-regulation. |
| Max Output Voltage | 20 V - sufficient for TFT LCD gate drivers (VGH/VGL) and white LED strings requiring >15 V bias. |
| Peak Current Limit | Adjustable up to 4 A via RCL - allows precise inductor saturation margining and ripple control per application load profile. |
| Feedback Reference | 1.245 V ±1.6% - sets output accuracy; used with R1/R2 divider to achieve stable VOUT = 1.245 × (1 + R1/R2). |
| Quiescent Current | 3–4.5 mA in switching state at 650 kHz - balances low-noise operation and light-load efficiency in battery-powered systems. |
| Thermal Resistance θJA | 47 °C/W - requires minimum 4-layer PCB with exposed pad tied to ground plane for continuous 4 A operation at +85°C ambient. |
Pinout & Package
ADP1614ACPZ-650-R7 is housed in a Pb-free, 3 mm × 3 mm, 10-lead LFCSP package with 0.8 mm height and thermally enhanced exposed pad (EP) that must be soldered to a PCB ground plane for thermal management.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (COMP) | Compensation node | Connect R-C network to GND to stabilize loop response; sets phase margin for varying VIN/VOUT/load conditions. |
| 2 (FB) | Feedback input | Senses output divider ratio; 1.245 V reference determines regulation point - deviation >±1.6% triggers correction. |
| 3 (EN) | Enable control | Logic-high (>1.6 V) enables regulator; logic-low (<0.3 V) shuts down IC, reducing IQ to 0.25 µA. |
| 4,5 (GND) | Power and signal ground | Dual GND pins reduce ground bounce; must be connected to low-impedance ground plane under EP. |
| 6,7 (SW) | Switch node | Drives external inductor; carries pulsed 4 A peak current - requires short, wide copper traces and low-ESR output capacitor. |
| 8 (VIN) | Main supply input | Accepts 2.5–5.5 V; bypass with ≥10 µF ceramic cap placed adjacent to pin to suppress switching noise. |
| 9 (CLRES) | Current-limit resistor terminal | Connect RCL to GND to set peak switch current (e.g., 71.5 kΩ → ~2.5 A); not FREQ-configurable in this variant. |
| 10 (SS) | Soft-start capacitor node | 5.5 µA internal current charges CSS to 1.23 V; 68 nF yields ~15 ms ramp - prevents input inrush during enable. |
| 11 (EP) | Exposed thermal pad | Electrically isolated; must be soldered to solid ground plane for θJA = 47 °C/W and reliable 4 A operation. |
Key Features
| Feature | Design Value |
|---|---|
| 650 kHz fixed-frequency operation | Optimizes efficiency over 10 mA–1 A loads and simplifies EMI filter design versus variable-frequency alternatives. |
| Adjustable 0.95–4 A peak current limit | Enables precise inductor selection and ripple control using standard 1% resistors (e.g., 61.9 kΩ → 4 A max). |
| Integrated 100 mΩ NMOS switch | Reduces external component count and conduction losses - delivers >90% efficiency at 500 mA with VOUT = 15 V. |
| Programmable soft start via SS pin | 5.5 µA constant-current source charges external capacitor to control output ramp rate and limit input surge. |
| Undervoltage lockout with hysteresis | Shuts down below 2.33 V (rising) and re-enables only above 2.5 V - prevents erratic startup during brownout. |
| Thermal shutdown with auto-recovery | Disables SW at 150°C and resumes regulation only after die cools to 130°C - protects against sustained overload. |
Applications
| TFT LCD Bias Supply | Portable Medical Sensor Rail |
|---|---|
Use Scenario: Generating VGH (18–20 V) and VGL (−10 V) for active-matrix LCD panels in handheld ultrasound or diagnostic displays. IC Role / Device Role / Timing Role: Primary boost regulator delivering regulated 20 V from 3.6 V Li-ion battery; operates continuously during display refresh cycles. Use Value: 3 mm × 3 mm LFCSP footprint saves board area; 650 kHz frequency enables compact 4.7 µH inductor and low-profile 22 µF ceramic output cap. |
Use Scenario: Powering analog front-end (AFE) circuitry including 24-bit ADCs and precision op-amps in battery-operated patient monitors. IC Role / Device Role / Timing Role: High-PSRR, low-noise 15 V rail generator; synchronized soft-start prevents sensor offset drift during power-up. Use Value: Adjustable current limit ensures inductor stays in CCM across 1–100 mA loads; 1.245 V FB reference enables <0.5% output tolerance. |
| Industrial IoT Node Power | Handheld Barcode Scanner |
Use Scenario: Providing 12 V for RS-485 transceivers and 5 V for microcontroller peripherals in remote environmental sensors. IC Role / Device Role / Timing Role: Dual-output boost stage (with secondary LDO) supplying isolated communication and logic rails from 3.3 V system bus. Use Value: 650 kHz switching allows small ferrite bead filters to meet CISPR-22 Class B emissions; UVLO prevents malfunction during battery sag. |
Use Scenario: Driving laser diode bias and CMOS image sensor interface in compact handheld scanners with <10 mm Z-height constraint. IC Role / Device Role / Timing Role: Single-chip 18 V boost converter powering laser driver IC; enabled only during scan trigger pulse. Use Value: 0.25 µA shutdown current extends battery life between scans; 4 A peak capability supports 500 ms burst-mode laser pulses. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-up DC-to-DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADP1614ACPZ-1.3-R7 | Fixed 1.3 MHz switching frequency; identical pinout, current limit adjustability, and protection features. | Better suited for ultra-compact layouts needing <2.2 µH inductors and minimal footprint - trades ~3–5% efficiency for smaller magnetics. | Select when board area is constrained more than efficiency; verify thermal performance with θJA = 47 °C/W at higher fSW. |
| TPS61088RHLR | 4.5 A fixed current limit, 2.5–5.5 V input, 4.5–12.6 V output range; no CLRES pin - current limit not adjustable. | Designed for USB PD power banks and portable chargers; lacks 20 V output capability and 650 kHz efficiency optimization. | Choose only if 12.6 V max output suffices and programmable current limiting is unnecessary; requires different compensation network. |
Compared with ADP1614ACPZ-1.3-R7, the ADP1614ACPZ-650-R7 delivers higher efficiency at medium loads and relaxed EMI filtering requirements, while TPS61088RHLR offers higher peak current but sacrifices output voltage flexibility and current-limit tuning - making ADP1614ACPZ-650-R7 optimal for TFT bias and precision analog rails.
Availability
ADP1614ACPZ-650-R7 is available at Aetrix Electronics and suitable for TFT LCD bias supplies, portable medical sensor rails, and industrial IoT node power requiring stable component supply, long-term lifecycle support, and guaranteed Pb-free LFCSP packaging.
Supply support for ADP1614ACPZ-650-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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA, with design centers worldwide and ISO 9001-certified manufacturing.
The ADP1614 product line targets space-constrained, high-efficiency boost conversion in portable and display electronics, emphasizing low-profile packaging, adjustable current limiting, and robust thermal protection for unattended operation.
FAQ
What is the switching frequency of the ADP1614ACPZ-650-R7?
The ADP1614ACPZ-650-R7 operates at a fixed 650 kHz switching frequency, factory-trimmed and guaranteed across −40°C to +125°C junction temperature. This frequency is not user-selectable - unlike the ADP1614ACPZ-R7 variant - and is optimized for efficiency and EMI performance in mid-power boost applications. The ADP1614ACPZ-650-R7 achieves up to 94% efficiency at 100 mA with VOUT = 15 V and VIN = 5 V.
How do I set the peak current limit for the ADP1614ACPZ-650-R7?
The ADP1614ACPZ-650-R7 uses Pin 9 (CLRES) to set the peak switch current via an external resistor to GND. For example, a 71.5 kΩ resistor yields ~2.5 A, while 61.9 kΩ enables the full 4 A maximum. The relationship is monotonic and documented in Figures 10–13 of the datasheet. The ADP1614ACPZ-650-R7 does not support FREQ pin configuration - CLRES is dedicated solely to current limiting.
Does the ADP1614ACPZ-650-R7 support adjustable output voltage?
Yes, the ADP1614ACPZ-650-R7 supports fully adjustable output voltage from VIN up to 20 V using a resistive divider from VOUT to the FB pin. The internal 1.245 V reference determines regulation: VOUT = 1.245 × (1 + R1/R2). R2 is typically 100 kΩ for stability; R1 is calculated accordingly. This enables precise bias generation for TFT gate drivers or custom analog rails without external DACs.
What is the purpose of the SS pin on the ADP1614ACPZ-650-R7?
The SS (soft-start) pin on the ADP1614ACPZ-650-R7 sources a constant 5.5 µA current to charge an external capacitor to 1.23 V, controlling output voltage ramp rate and preventing input inrush current. A 68 nF capacitor yields ~15 ms startup time. During shutdown, the SS pin is internally shorted to GND to discharge the capacitor, ensuring clean turn-off. This function is critical for protecting input capacitors and avoiding system reset in battery-powered devices.
Can the ADP1614ACPZ-650-R7 be used with input voltages below 2.5 V?
No - the ADP1614ACPZ-650-R7 has a specified minimum input voltage of 2.5 V, enforced by its undervoltage lockout (UVLO) circuit, which disables the regulator when VIN falls below 2.33 V (rising threshold). Operation below 2.5 V risks failure to start, unstable regulation, or excessive quiescent current. For sub-2.5 V inputs, consider the ADP1621 or other low-VIN boost controllers, as the ADP1614ACPZ-650-R7 is not characterized or guaranteed in that range.
ADP1614ACPZ-650-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 10-VFDFN Exposed Pad, CSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- 20V
- Current - Output:
- 4A (Switch)
- Frequency - Switching:
- 650kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-LFCSP-WD (3x3)
ADP1614ACPZ-650-R7 FAQ
1.How can I place an order for ADP1614ACPZ-650-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP1614ACPZ-650-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 ADP1614ACPZ-650-R7 reliable?
The price and inventory of ADP1614ACPZ-650-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP1614ACPZ-650-R7 is usually 5 days.
3.What payment methods are accepted for ADP1614ACPZ-650-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP1614ACPZ-650-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP1614ACPZ-650-R7?
ADP1614ACPZ-650-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP1614ACPZ-650-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 ADP1614ACPZ-650-R7?
For technical support, including ADP1614ACPZ-650-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP1614ACPZ-650-R7 requirements.
6.How does Aetrix verify that ADP1614ACPZ-650-R7 is sourced from the original manufacturer or authorized distributors?
All ADP1614ACPZ-650-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 ADP1614ACPZ-650-R7 meets industry standards.
7.What is the process for return or replacement of ADP1614ACPZ-650-R7?
All ADP1614ACPZ-650-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADP1614ACPZ-650-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 ADP1614ACPZ-650-R7 part is unused and in its original packaging.
Return procedure for ADP1614ACPZ-650-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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