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Analog Devices Inc./Maxim Integrated MAX762EPA+
- Part No.:
- MAX762EPA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX762EPA+.pdf
- Description:
- IC REG BOOST ADJ/5V 1.5A 8PDIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,360
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Product details
Overview
MAX762EPA+ from Maxim Integrated is a high-efficiency, current-limited pulse-frequency-modulated (PFM) step-up DC-DC converter with fixed 15V output, 150mA load capability, 110µA max supply current, and internal 1A N-channel power MOSFET - designed for flash memory programming in battery-powered PCMCIA cards.
For engineers reviewing the MAX762EPA+ datasheet, MAX762EPA+ pinout, MAX762EPA+ application, or MAX762EPA+ equivalent, key selection criteria include input voltage range (2V–16.5V), shutdown current (<5µA), 300kHz switching frequency, LBI/LBO low-battery detection interface, and bootstrapped vs. non-bootstrapped operating mode compatibility.
Technical Context
The MAX762EPA+ uses a proprietary current-limited PFM control scheme that combines ultra-low quiescent current (≤110µA) with cycle-by-cycle peak-current limiting (1A) and fixed on/off timing (8µs max on-time, 1.3µs min off-time) to sustain >86% efficiency across 0–150mA loads. It operates in continuous-conduction mode (CCM) under heavy loads and supports both bootstrapped (output-sensed) and non-bootstrapped (input-sensed) configurations.
Its integrated 1.5V reference (±30mV over temperature) feeds the FB pin for regulation and drives external circuitry up to 100µA; the LBI/LBO comparator provides programmable low-battery detection with 20mV hysteresis and open-drain LBO output, while SHDN enables TTL/CMOS-compatible shutdown with <5µA current draw.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 15V ±3.6% (14.4V–15.6V); stable under 4.75V–12V input at 150mA load |
| Input Voltage Range | 2.0V to 16.5V; guaranteed start-up at 2.0V in bootstrapped mode with internal resistors |
| Supply Current | ≤110µA typical; enables multi-year battery life in low-duty-cycle portable applications |
| Shutdown Current | ≤5µA max; preserves battery charge during system sleep states |
| Switching Frequency | Up to 300kHz; permits use of compact 18µH surface-mount inductors and low-ESR 33µF output capacitors |
| Peak Switch Current | 1.0A typical; supports CCM operation and robust transient response up to 150mA output |
| Reference Voltage | 1.50V ±30mV; used for FB regulation and LBI threshold; stable over -40°C to +85°C |
Pinout & Package
MAX762EPA+ is housed in an 8-pin plastic DIP package (0.300" wide), rated for -40°C to +85°C operation. Pin assignments are validated per Maxim's official pin description and top-view diagram.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| LBI | Low-battery input | Analog input to internal comparator; sets trip point via resistor divider to V+ and GND; 20mV hysteresis prevents chatter |
| SHDN | Active-high enable | TTL/CMOS-compatible logic input; pulls internal switch gate low when grounded; draws ≤1µA leakage |
| V+ | Main power input | Supplies bias and switching circuitry; also serves as output voltage sense node in bootstrapped mode |
| FB | Feedback input | Compares divided output voltage against 1.5V reference; tied to GND for fixed 15V bootstrapped operation |
| REF | 1.5V reference output | Stable precision reference sourcing up to 100µA; requires 0.1µF ceramic bypass capacitor |
| LX | Switch node | Drain of internal 1A N-channel MOSFET; peak current limited to 1.25A; on-resistance ~1Ω at +25°C |
| GND | Power ground | Common return for all analog and power paths; must be star-connected to minimize noise coupling |
| LBO | Low-battery open-drain output | Active-low indicator; requires external pull-up to V+ or VOUT; high-impedance during shutdown |
Key Features
| Feature | Design Value |
|---|---|
| Current-limited PFM control | Delivers 86% efficiency from 1mA to 150mA load without sacrificing <110µA quiescent current |
| Integrated 1A power FET | Eliminates external switch; reduces BOM count and PCB area; supports 150mA at 15V from 5V input |
| Bootstrapped/non-bootstrapped dual-mode operation | Enables optimal efficiency trade-off: bootstrapped for higher output current below 4V input; non-bootstrapped for lowest IQ above 4V |
| Programmable low-battery detection | LBI/LBO pair allows user-defined trip voltage (e.g., 3.3V, 4.2V) with built-in 20mV hysteresis and no external comparator needed |
| Fast start-up and light-load optimization | Starts at 2.0V input; uses half-current pulses initially to minimize ripple and maximize efficiency at microamp loads |
Applications
| Flash Memory Programming | PCMCIA Card Power |
|---|---|
Use Scenario: Generating 15V programming voltage for NOR/NAND flash erase/write cycles in portable data acquisition modules. IC Role / Device Role / Timing Role: Primary step-up regulator supplying regulated 15V/150mA with fast transient response to handle burst-mode flash current demands. Use Value: Enables single-cell Li-ion (3.0–4.2V) or triple-AA (3.6–4.5V) operation without external boost stages; 110µA IQ extends battery runtime between programming events. | Use Scenario: Providing isolated 15V VCC for PCMCIA Type II card interface logic and I/O buffers in handheld test equipment. IC Role / Device Role / Timing Role: Standby-ready DC-DC converter delivering stable 15V rail with <5µA shutdown current during card slot idle periods. Use Value: Meets PCMCIA JEIDA 4.2 power sequencing requirements; LBO signal triggers host controller warning before brownout. |
| Battery-Powered Instrumentation | High-Efficiency DC-DC Conversion |
Use Scenario: Powering 15V op-amps and ADC reference circuits in portable multimeters running from two alkaline cells (2.0–3.2V). IC Role / Device Role / Timing Role: Input-voltage adaptive regulator using bootstrapped mode to maintain regulation down to 2.0V input with no external components. Use Value: Eliminates need for discrete charge-pump ICs; 86% peak efficiency preserves battery capacity across full discharge curve. | Use Scenario: Replacing linear regulators in space-constrained industrial sensors where 12–15V rails are required from 3.3V or 5V system supplies. IC Role / Device Role / Timing Role: Compact, low-noise switching solution with 300kHz operation enabling small 18µH inductor and minimal EMI filtering. Use Value: Reduces thermal load by >75% versus LDOs; REF pin provides accurate 1.5V reference for sensor signal conditioning. |
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 |
|---|---|---|---|
| MAX761EPA+ | Fixed 12V output (vs. 15V); identical pinout, package, and electrical specs otherwise | Suitable for 12V flash programming or systems requiring lower output voltage | Select MAX761EPA+ when 12V output suffices and board layout reuse is prioritized |
| TPS61040DRBT | Adjustable output (1.8V–28V); 28V abs max input; 0.4A switch; no integrated LBI/LBO comparator | Requires external feedback resistors and low-battery circuitry; better for wide-VOUT designs | Choose TPS61040DRBT when output voltage flexibility or higher input voltage tolerance is required |
Compared with MAX761EPA+, MAX762EPA+ delivers +3V higher output for 15V flash programming while maintaining identical footprint and shutdown behavior; versus TPS61040DRBT, it trades adjustability for integrated low-battery monitoring and simpler BOM in fixed-output applications.
Availability
MAX762EPA+ is available at Aetrix Electronics and suitable for flash memory programming, PCMCIA card power, and battery-powered instrumentation requiring stable component supply with extended temperature support (-40°C to +85°C).
Supply support for MAX762EPA+ 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 U.S.-based semiconductor company specializing in high-performance analog and mixed-signal ICs for power, sensing, and communication applications.
The MAX761/MAX762 product line was designed specifically for low-power, high-efficiency step-up conversion in portable and battery-critical systems - emphasizing minimal quiescent current, integrated power switches, and built-in battery monitoring.
FAQ
What is the guaranteed output current capability of the MAX762EPA+ at 5V input?
The MAX762EPA+ guarantees 150mA output current at 15V when supplied from a 5V input, as confirmed in the Typical Operating Characteristics and Electrical Characteristics tables. This performance holds across the full -40°C to +85°C operating temperature range and is validated in bootstrapped configuration with internal feedback resistors.
Does the MAX762EPA+ support adjustable output voltage, and how is it configured?
Yes, the MAX762EPA+ supports adjustable output from 5V to 16.5V using external resistors R1 and R2 connected to the FB pin. For bootstrapped operation, tie REF to FB through R2 and connect R1 between FB and GND; the formula is R2 = R1 × (VOUT − 1.5V) / 1.5V. Fixed 15V operation requires FB tied to GND.
What is the function of the LBI and LBO pins on the MAX762EPA+?
The LBI pin is the input to an internal comparator referenced to the 1.5V REF voltage; when LBI falls below 1.5V, the open-drain LBO pin pulls low to signal low battery condition. LBO requires an external pull-up resistor (e.g., 100kΩ to VOUT) and exhibits 20mV hysteresis to prevent noise-induced toggling - a feature fully integrated into the MAX762EPA+ without external components.
Can the MAX762EPA+ operate from a 2.0V input, and what conditions apply?
Yes, the MAX762EPA+ guarantees start-up from 2.0V input in bootstrapped mode with internal feedback resistors (FB tied to GND). In this configuration, special start-up circuitry fixes 50% duty cycle until V+ reaches 2.5V, after which normal regulation begins. Non-bootstrapped operation with external resistors requires ≥2.7V input due to undervoltage lockout.
What package type and temperature grade does the MAX762EPA+ use?
The MAX762EPA+ uses an 8-pin plastic DIP package (0.300" wide) and is rated for industrial temperature operation from -40°C to +85°C. The "E" suffix in the part number explicitly denotes this extended temperature range, and the "PA" suffix confirms the plastic DIP packaging - verified in Maxim's official Ordering Information table.
MAX762EPA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Adjustable (Fixed)
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2V
- Voltage - Input (Max):
- 16.5V
- Voltage - Output (Min/Fixed):
- 5V (15V)
- Voltage - Output (Max):
- 16.5V
- Current - Output:
- 1.5A (Switch)
- Frequency - Switching:
- 300kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
MAX762EPA+ FAQ
1.How can I place an order for MAX762EPA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX762EPA+ 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 MAX762EPA+ reliable?
The price and inventory of MAX762EPA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX762EPA+ is usually 5 days.
3.What payment methods are accepted for MAX762EPA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX762EPA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX762EPA+?
MAX762EPA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX762EPA+ 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 MAX762EPA+?
For technical support, including MAX762EPA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX762EPA+ requirements.
6.How does Aetrix verify that MAX762EPA+ is sourced from the original manufacturer or authorized distributors?
All MAX762EPA+ 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 MAX762EPA+ meets industry standards.
7.What is the process for return or replacement of MAX762EPA+?
All MAX762EPA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX762EPA+, 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 MAX762EPA+ part is unused and in its original packaging.
Return procedure for MAX762EPA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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