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Analog Devices Inc./Maxim Integrated MAX762ESA+T
- Part No.:
- MAX762ESA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX762ESA+T.pdf
- Description:
- IC REG BOOST ADJ/5V 1.5A 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,215
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Product details
Overview
MAX762ESA+T 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. It operates from 2V to 16.5V input and supports bootstrapped/non-bootstrapped modes for flash memory programming in battery-powered PCMCIA cards.
For engineers reviewing the MAX762ESA+T datasheet, MAX762ESA+T pinout, MAX762ESA+T application, or MAX762ESA+T equivalent, key selection criteria include its 15V fixed output, -40°C to +85°C extended temperature range, low-quiescent-current PFM control, and integrated low-battery detection (LBI/LBO) for portable system power management.
Technical Context
The MAX762ESA+T uses a proprietary current-limited PFM scheme combining 8µs maximum on-time and 1.3µs minimum off-time one-shots with peak current limiting (1A) to sustain continuous-conduction mode (CCM) under heavy loads while maintaining ultra-low 110µA supply current at light loads. Its 300kHz switching frequency enables use of compact 18µH surface-mount inductors.
It integrates a 1.5V reference (±30mV over temperature), LBI/LBO low-battery comparator with 20mV hysteresis, and TTL/CMOS-compatible SHDN input. In bootstrapped mode, V+ serves as both input and output voltage sense node; in non-bootstrapped mode, external resistors set adjustable output from 5V to 16.5V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 15V ±3.6% (14.4V–15.6V); enables direct powering of 15V logic or analog circuitry without feedback resistors. |
| Max Output Current | 150mA at 5V input; sufficient for programming flash memory arrays requiring stable 15V bias. |
| Supply Current | 110µA max (typ. 300µA); ensures minimal battery drain in always-on or low-duty-cycle portable systems. |
| Input Voltage Range | 2.0V to 16.5V; supports single-cell Li-ion (2.7–4.2V), dual-cell alkaline (2–3.2V), and wide industrial rails. |
| Switching Frequency | Up to 300kHz; allows use of small 18µH SMT inductors and reduces EMI compared to sub-100kHz converters. |
| Peak Switch Current | 1.0A (min); supports robust CCM operation up to full 150mA load with margin for transient surges. |
| Shutdown Current | 5µA max; enables deep sleep states in battery-backed systems without compromising wake-up latency. |
| Reference Voltage | 1.50V ±30mV; provides precision feedback for external adjustable configurations and LBI threshold setting. |
Pinout & Package
MAX762ESA+T is housed in an 8-pin SO (Small Outline) package, 150mil width, RoHS-compliant, with exposed pad not present. Pin 1 is marked by beveled corner; device orientation follows standard SO top-view labeling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| LBI | Low-battery input | Analog input to internal comparator; sets trip point via resistor divider to 1.5V reference; 20mV hysteresis prevents chatter. |
| SHDN | Active-high shutdown control | TTL/CMOS-compatible enable; pulls internal bias and reference offline when high, reducing ICC to <5µA. |
| V+ | Main power input / output sense | Supplies IC core; in bootstrapped mode, also senses output voltage for regulation; absolute max 17V. |
| FB | Feedback input | Connects to GND for fixed 15V bootstrapped operation; connects to resistor divider for adjustable output. |
| REF | 1.5V precision reference output | Sources up to 100µA; requires 0.1µF ceramic bypass; used for LBI threshold and external feedback networks. |
| LX | Internal FET drain node | Switching node driving external inductor/diode; 1Ω on-resistance; handles 1A peak current; must be routed short and low-inductance. |
| GND | Power and signal ground | Common return for all currents; star-ground connection critical for noise immunity and stability. |
| LBO | Open-drain low-battery output | Drives low when LBI < 1.5V; requires external pull-up to VOUT or V+; high-impedance during shutdown. |
Key Features
| Feature | Design Value |
|---|---|
| Current-limited PFM control | Combines 110µA light-load IQ with 86% efficiency at 150mA by dynamically scaling peak current between 0.5A (first two pulses) and 1A (full load). |
| Integrated 1A N-channel FET | Eliminates external switch; reduces BOM count and layout area; enables complete boost solution with only inductor, diode, and two capacitors. |
| Bootstrapped operation mode | Uses VOUT to power internal circuitry, enabling higher gate drive and improved efficiency below 4V input-critical for single-cell battery start-up. |
| Low-battery detection (LBI/LBO) | On-chip comparator with 20mV hysteresis and open-drain output; supports user-defined trip points (e.g., 3.0V or 3.3V) using two resistors. |
| 300kHz fixed-frequency switching | Enables use of miniature 18µH SMT inductors (e.g., Sumida CD54-180); reduces radiated EMI vs. variable-frequency PFM alternatives. |
| -40°C to +85°C operating range | Qualified per MAX76_E_A grade; supports industrial and automotive accessory applications where ambient temperature exceeds commercial limits. |
Applications
| Flash Memory Programming | PCMCIA Card Power Supply |
|---|---|
Use Scenario: Generating 15V programming voltage for NOR/NAND flash erase/write cycles in embedded systems. IC Role / Device Role / Timing Role: Primary step-up regulator delivering regulated 15V at up to 150mA with fast transient response to handle burst programming currents. Use Value: Enables reliable flash programming from low-voltage batteries (e.g., 3.3V or 3.6V Li-ion) without external charge pumps or transformers. |
Use Scenario: Providing isolated 15V auxiliary rail for PCMCIA Type II card interface logic and I/O drivers. IC Role / Device Role / Timing Role: Standby-capable boost converter with SHDN control synchronized to card insertion/removal detection. Use Value: Meets PCMCIA JEIDA spec for 15V ±5% supply with <5µA shutdown current, extending host battery life during card idle periods. |
| Battery-Powered Portable Instruments | High-Efficiency DC-DC Conversion |
Use Scenario: Powering 15V op-amps, ADC references, or LCD bias supplies in handheld test equipment. IC Role / Device Role / Timing Role: Primary DC-DC stage converting 2.7–4.2V Li-ion to stable 15V with minimal quiescent draw during measurement standby. Use Value: Achieves >86% efficiency across 1mA–150mA load range, doubling battery runtime versus linear regulators or older PFM ICs. |
Use Scenario: Replacing inefficient discrete boost circuits in space-constrained industrial controllers. IC Role / Device Role / Timing Role: Integrated power module replacing 5+ components (FET, controller, reference, comparator, driver) with single SO-8 IC. Use Value: Reduces PCB area by >40%, eliminates gate-drive design complexity, and guarantees CCM operation up to full rated load. |
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 |
|---|---|---|---|
| MAX761ESA+T | Fixed 12V output (vs. 15V); identical pinout, package, and electrical specs except VOUT and FB configuration. | Suitable where 12V logic or memory programming is required instead of 15V; no redesign needed beyond output capacitor and diode rating check. | Select MAX761ESA+T only if system requires 12V output; otherwise MAX762ESA+T is direct functional match for 15V needs. |
| TPS61040DRVR | Adjustable 1.8–28V output; 28V abs max input; 0.5A switch; 500kHz switching; no integrated LBO/LBI comparator. | Requires external feedback resistors and low-battery circuitry; better suited for wide-output-range designs but adds component count and layout complexity. | Choose TPS61040DRVR only when adjustable output or higher input voltage (>16.5V) is mandatory; MAX762ESA+T offers lower IQ and integrated monitoring. |
Compared with MAX761ESA+T, MAX762ESA+T delivers +3V higher output for 15V-specific loads without changing layout; versus TPS61040DRVR, it trades adjustability for lower quiescent current, integrated battery monitoring, and guaranteed 15V accuracy-critical for flash programming reliability.
Availability
MAX762ESA+T is available at Aetrix Electronics and suitable for flash memory programming, PCMCIA card power, and battery-powered portable instrumentation requiring stable component supply across industrial temperature ranges.
Supply support for MAX762ESA+T 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, communications, and consumer applications.
The MAX761/MAX762 product line was designed specifically for ultra-low-power, high-efficiency boost conversion in battery-critical systems such as flash programmers and PCMCIA peripherals-emphasizing minimal IQ, integrated protection, and compact footprint.
FAQ
What is the guaranteed output voltage tolerance for MAX762ESA+T?
The MAX762ESA+T guarantees a 15V output with ±3.6% tolerance (14.4V to 15.6V) across temperature and load, as specified in the Electrical Characteristics table under "Output Voltage" for MAX762 devices. This applies to bootstrapped fixed-output operation with FB tied to GND.
Can MAX762ESA+T operate from a single 3.7V Li-ion cell?
Yes, MAX762ESA+T starts up reliably from 2.0V and operates continuously down to ~2.7V in bootstrapped mode. With a nominal 3.7V Li-ion cell, it delivers full 150mA at 15V output, supporting flash programming throughout the battery discharge curve until cutoff.
Does MAX762ESA+T require external feedback resistors for 15V output?
No-MAX762ESA+T provides fixed 15V output in bootstrapped mode by internally connecting FB to GND. External resistors are only required for adjustable outputs (5V–16.5V) or non-bootstrapped operation; for 15V, FB must be tied directly to GND.
How does the low-battery detector function in MAX762ESA+T?
The MAX762ESA+T includes an LBI input and open-drain LBO output. When LBI voltage falls below 1.5V (set by resistor divider), LBO pulls low with 20mV hysteresis. During shutdown (SHDN = high), LBO goes high-impedance and LBI is ignored-ensuring clean system-level battery management.
What is the maximum allowable input voltage for MAX762ESA+T?
The absolute maximum input voltage (V+ to GND) for MAX762ESA+T is 17V. The recommended operating range is 2.0V to 16.5V per the Absolute Maximum Ratings table; exceeding 17V risks permanent damage to the internal power FET and control circuitry.
MAX762ESA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX762ESA+T FAQ
1.How can I place an order for MAX762ESA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX762ESA+T 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 MAX762ESA+T reliable?
The price and inventory of MAX762ESA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX762ESA+T is usually 5 days.
3.What payment methods are accepted for MAX762ESA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX762ESA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX762ESA+T?
MAX762ESA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX762ESA+T 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 MAX762ESA+T?
For technical support, including MAX762ESA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX762ESA+T requirements.
6.How does Aetrix verify that MAX762ESA+T is sourced from the original manufacturer or authorized distributors?
All MAX762ESA+T 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 MAX762ESA+T meets industry standards.
7.What is the process for return or replacement of MAX762ESA+T?
All MAX762ESA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX762ESA+T, 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 MAX762ESA+T part is unused and in its original packaging.
Return procedure for MAX762ESA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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