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Analog Devices Inc./Maxim Integrated MAX8614BATD/V+
- Part No.:
- MAX8614BATD/V+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Special Purpose Regulators
- Package:
- 14-WFDFN Exposed Pad
- Datasheet:
-
MAX8614BATD/V+.pdf
- Description:
- DUAL-OUTPUT (+ & -) DC-DC CONV F
- Quantity:
- Payment:
- Shipping:
Inventory:380
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Product details
Overview
MAX8614BATD/V+ from Maxim Integrated is a dual-output, fixed-frequency (1MHz) step-up/inverting DC-DC converter IC designed for CCD bias and OLED display power in automotive-grade portable imaging systems. It delivers up to +24V positive output and −16V negative output (relative to VCC), supports 2.7V–5.5V input, features True Shutdown™, pin-selectable sequencing, and operates across −40°C to +125°C.
For engineers reviewing the MAX8614BATD/V+ datasheet, MAX8614BATD/V+ pinout, MAX8614BATD/V+ application, or MAX8614BATD/V+ equivalent, key selection criteria include its AEC-Q100 qualified 14-pin TDFN package, independent regulation of ± outputs, 0.8A/0.75A peak inductor current limits, fault-flag reporting, and thermal shutdown at +170°C - all critical for robust CCD power management in digital cameras and camcorders.
Technical Context
The MAX8614BATD/V+ integrates two current-mode PWM regulators sharing a 1MHz oscillator: one controls a step-up converter with internal PVP load-disconnect switch, the other governs an inverting converter with independent feedback via FBP and FBN. Both use slope-compensated control and internal soft-start (10ms) to limit inrush.
It implements pin-selectable power-on sequencing (SEQ logic input), undervoltage lockout (2.42V–2.82V threshold with 25mV hysteresis), and overload protection with 100ms fault delay. Fault detection asserts open-drain FLT low and disables both converters until reset.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0V to 5.5V - minimum operating voltage raised to 3.0V for extended temperature operation (−40°C to +125°C). |
| Positive Output Range | Up to +24V - adjustable via external resistor divider on FBP; regulated independently of negative rail. |
| Negative Output Range | Up to −16V relative to VCC - set via FBN/REF divider; enables biasing below ground without separate negative supply. |
| LXP Current Limit | 0.7A to 0.9A - peak inductor current limit for step-up stage; supports ≥50mA at +15V under typical conditions. |
| LXN Current Limit | 0.65A to 0.85A - peak inductor current limit for inverter stage; supports ≥100mA at −7.5V. |
| Oscillator Frequency | 0.93MHz to 1.07MHz - fixed-frequency PWM enables predictable EMI filtering and compact external components. |
| Shutdown Current | 0.1µA to 5µA - ultra-low quiescent draw during True Shutdown™, preserving battery life in always-on imaging modules. |
Pinout & Package
MAX8614BATD/V+ is housed in a lead(Pb)-free, RoHS-compliant, AEC-Q100 qualified 14-pin 3mm × 3mm TDFN package with exposed pad (EP) for thermal dissipation. Top mark: ABT.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 ONBST | Step-up enable input | Active-high logic control; enables automatic startup or independent step-up regulation when SEQ = low. |
| 2 FBN | Negative output feedback | Connects to resistor divider between VINV and REF (1.25V); sets negative output voltage with 0V threshold. |
| 3 AVCC | Bias supply | Must be tied to VCC; powers internal analog circuitry including reference and error amplifiers. |
| 4 REF | 1.25V precision reference | Stable 1.235V–1.260V output; used as feedback reference for negative output and bypassed with 0.22µF capacitor. |
| 5 GND | Analog ground | Low-noise return for REF, FBP, FBN; must be short-traced to PGND to minimize noise coupling. |
| 6 FLT | Fault flag output | Open-drain active-low signal asserted during overload, short-circuit, or thermal fault; requires 100kΩ pull-up to AVCC. |
| 7 FBP | Positive output feedback | Connects to resistor divider between VBST and GND; sets positive output with 0.995V–1.025V threshold. |
| 8 SEQ | Sequencing control | Logic input selecting simultaneous (SEQ = low) or sequential (SEQ = high) power-up of ± outputs. |
| 9 ONINV | Inverter enable input | Active-high logic control; enables independent inverter startup or coordinated sequencing with ONBST. |
| 10 LXP | Step-up inductor node | Switching node for boost converter; high-impedance in shutdown; connects to external inductor and diode. |
| 11 PGND | Power ground | High-current return for LXN/LXP/PVP; must be short-traced to GND to reduce ground bounce and EMI. |
| 12 PVP | True-Shutdown load switch | Internal MOSFET disconnecting VCC from LXP during shutdown; eliminates battery drain path in step-up output. |
| 13 VCC | Main power input | Supplies both converters; must be connected to AVCC; absolute max rating: −0.3V to +6V. |
| 14 LXN | Inverter inductor node | Switching node for inverter; high-impedance in shutdown; connects to external inductor and diode. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent regulation | Simultaneous +24V and −16V (vs. VCC) outputs with separate feedback paths (FBP/FBN) and error amplifiers. |
| True Shutdown™ | Zero-load leakage: PVP disconnects VCC from LXP and LXN switches turn off, eliminating DC path to either output. |
| Pin-selectable sequencing | SEQ input configures startup order - simultaneous (SEQ = low) or step-up-first (SEQ = high) - matching CCD imager timing requirements. |
| Robust fault protection | 100ms overload delay before FLT assertion; foldback current limiting on positive output; thermal shutdown at +170°C. |
| Controlled soft-start | 10ms ramp time; step-up reference ramps 0→1.01V, inverter reference ramps 1.25V→0V - limits inrush to <500mA. |
Applications
| CCD Imaging Bias Supply | OLED Display Power |
|---|---|
|
Use Scenario: Providing stable, isolated ± bias voltages for CCD sensor pixel arrays in automotive dashcams and rear-view cameras. IC Role / Device Role / Timing Role: Dual-output DC-DC converter generating independently regulated +15V and −7.5V rails synchronized via SEQ-controlled power-on sequence. Use Value: Eliminates need for discrete charge pumps or transformers; AEC-Q100 qualification ensures reliability under vehicle temperature cycling and vibration. |
Use Scenario: Powering active-matrix OLED displays in portable medical imaging devices requiring low-noise, high-efficiency dual-rail supplies. IC Role / Device Role / Timing Role: Step-up/inverter IC delivering +24V anode and −10V cathode bias with 1MHz switching to minimize EMI near sensitive analog front-ends. Use Value: 90% efficiency at 50mA reduces thermal load in sealed enclosures; True Shutdown™ extends battery runtime during standby. |
| Digital Camera Core Power | Camcorder Signal Chain Bias |
|
Use Scenario: Supplying programmable bias for CMOS image sensors and analog signal conditioning in consumer digital cameras. IC Role / Device Role / Timing Role: Regulated dual-rail generator with adjustable outputs (via FBP/FBN dividers) and fault-flag monitoring for system-level diagnostics. Use Value: Pin-selectable sequencing prevents latch-up during cold start; 14-pin TDFN footprint saves PCB area vs. dual discrete converters. |
Use Scenario: Generating precision ±12V rails for video ADCs, DACs, and op-amp buffers in handheld camcorders. IC Role / Device Role / Timing Role: Fixed-frequency (1MHz) converter minimizing interference with RF sections; REF output provides stable 1.25V reference for auxiliary circuits. Use Value: Low 0.1µA shutdown current preserves battery charge during recording pauses; thermal shutdown protects against overheating in compact form factors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output DC-DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX8614BETD+ | Same core architecture and pinout, but rated for −40°C to +85°C (not +125°C); top mark ABH; no /V automotive qualification. | Not suitable for under-hood or engine bay deployments requiring AEC-Q100 compliance and extended temperature operation. | Select MAX8614BETD+ only for commercial-temperature industrial or consumer camera designs where cost is prioritized over automotive qualification. |
| MAX8614AETD+ | Lower current capability: 0.44A/0.33A LXP/LXN limits vs. 0.8A/0.75A; same package and pinout; top mark ABG; −40°C to +85°C rating. | Supports only ≤25mA/+15V and ≤50mA/−7.5V loads - insufficient for high-resolution CCDs demanding >50mA positive output. | Choose MAX8614AETD+ only for low-power portable devices (e.g., PDAs) where reduced load current and lower cost justify trade-offs in output capability. |
Compared with MAX8614BETD+ and MAX8614AETD+, the MAX8614BATD/V+ uniquely combines AEC-Q100 qualification, +125°C operation, and higher current limits - making it the sole option for automotive imaging systems requiring guaranteed performance across full vehicle temperature range and fault resilience.
Availability
MAX8614BATD/V+ is available at Aetrix Electronics and suitable for CCD imaging bias supplies, OLED display power, and digital camera core power requiring stable component supply with automotive-grade reliability and extended temperature support.
Supply support for MAX8614BATD/V+ 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
Maxim Integrated (now part of Analog Devices) is a semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, automotive, and communications markets.
The MAX8614A/MAX8614B product line was engineered specifically for dual-rail CCD and display bias in portable imaging equipment - emphasizing compact size, sequencing flexibility, and robust protection in thermally constrained environments.
FAQ
What is the operating temperature range of the MAX8614BATD/V+?
The MAX8614BATD/V+ is specified for continuous operation from −40°C to +125°C ambient temperature. This extended range, combined with AEC-Q100 qualification (/V suffix), makes it suitable for automotive imaging applications such as dashcams and surround-view systems where under-hood or cabin-mounted units experience wide thermal swings.
How does the MAX8614BATD/V+ implement True Shutdown™?
The MAX8614BATD/V+ implements True Shutdown™ by turning off both the internal PVP load-switch (disconnecting VCC from LXP) and the LXN power switch during shutdown mode. This eliminates all DC current paths to either output, reducing supply current to 0.1µA–5µA and preventing battery drain - a critical feature for always-on imaging modules powered by limited-capacity batteries.
What are the key differences between MAX8614BATD/V+ and MAX8614BETD+?
The MAX8614BATD/V+ differs from MAX8614BETD+ in three confirmed ways: (1) extended junction temperature rating (+125°C vs. +85°C), (2) AEC-Q100 qualification (/V suffix), and (3) top-mark ABT (vs. ABH). All electrical specs, pinout, and package are identical - but MAX8614BATD/V+ is the only version validated for automotive under-hood deployment.
Can the MAX8614BATD/V+ generate both outputs simultaneously?
Yes - when SEQ is pulled low, the MAX8614BATD/V+ enables independent control of ONBST and ONINV, allowing simultaneous startup of both outputs. The step-up converter's PVP switch turns on first to precharge, then both regulators ramp their references over ~7ms to achieve regulation concurrently - ideal for CCD imagers requiring matched timing.
What protection features does the MAX8614BATD/V+ include?
The MAX8614BATD/V+ includes overload protection with 100ms fault delay, thermal shutdown at +170°C (typ), undervoltage lockout (2.42V–2.82V), short-circuit current limiting on both LXP and LXN, and open-drain FLT flag reporting. These features ensure safe operation during transient faults and prevent damage during abnormal load or thermal conditions.
MAX8614BATD/V+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 14-WFDFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Applications:
- Converter, CCD
- Voltage - Input:
- 2.7V ~ 5.5V
- Number of Outputs:
- 2
- Voltage - Output:
- Adj up to 24V, Adj down to -16V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TDFN (3x3)
MAX8614BATD/V+ FAQ
1.How can I place an order for MAX8614BATD/V+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8614BATD/V+ 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 MAX8614BATD/V+ reliable?
The price and inventory of MAX8614BATD/V+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8614BATD/V+ is usually 5 days.
3.What payment methods are accepted for MAX8614BATD/V+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8614BATD/V+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8614BATD/V+?
MAX8614BATD/V+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8614BATD/V+ 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 MAX8614BATD/V+?
For technical support, including MAX8614BATD/V+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8614BATD/V+ requirements.
6.How does Aetrix verify that MAX8614BATD/V+ is sourced from the original manufacturer or authorized distributors?
All MAX8614BATD/V+ 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 MAX8614BATD/V+ meets industry standards.
7.What is the process for return or replacement of MAX8614BATD/V+?
All MAX8614BATD/V+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX8614BATD/V+, 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 MAX8614BATD/V+ part is unused and in its original packaging.
Return procedure for MAX8614BATD/V+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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