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Analog Devices Inc./Maxim Integrated MAX1896EUT#TG16
- Part No.:
- MAX1896EUT#TG16
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SOT-23-6
- Datasheet:
-
MAX1896EUT#TG16.pdf
- Description:
- IC REG BST SEPIC ADJ 550MA SOT6
- Quantity:
- Payment:
- Shipping:
Inventory:1,135
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Product details
Overview
MAX1896EUT#TG16 from Maxim Integrated is a current-mode, fixed-frequency step-up DC-DC converter with integrated 0.7Ω N-channel MOSFET, 1.4MHz switching frequency, 2.6V–5.5V input range, and adjustable output up to 13V - designed for space-constrained portable power rails in LCD displays and PCMCIA cards.
For engineers reviewing the MAX1896EUT#TG16 datasheet, MAX1896EUT#TG16 pinout, MAX1896EUT#TG16 application, or MAX1896EUT#TG16 equivalent, key selection criteria include guaranteed 12V/120mA output from 5V input, programmable soft-start via external capacitor, 0.01µA shutdown current, and LT1613 pin compatibility for drop-in replacement in existing SOT23-6 layouts.
Technical Context
The MAX1896EUT#TG16 employs current-mode PWM control with internal slope compensation to ensure loop stability at high duty cycles (up to 86%), enabling fast transient response and low-noise operation. Its error amplifier regulates output voltage by adjusting inductor peak current based on feedback from the FB pin.
Soft-start is implemented via constant-current (4µA typical) charging of an external capacitor at the SS pin, ramping peak-inductor current from 0A to full limit over a user-defined duration. Shutdown disables all internal circuitry except SHDN input bias, reducing supply current to 0.01µA while maintaining LX-to-IN path through external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 1.4MHz typical - enables compact LC filtering with small inductors & capacitors and supports fast load transient recovery. |
| Input Voltage Range | 2.6V to 5.5V - supports single-cell Li+ (2.7–4.2V), NiMH (2.4–4.8V), and regulated 3.3V/5V rails without external LDO pre-regulation. |
| Output Voltage Range | Adjustable from VIN to 13V - set via resistive divider on FB pin; supports 5V, 12V, and 13V outputs for display bias, USB OTG, or interface rails. |
| Efficiency | >90% typical at mid-load - achieved via low RON (0.7Ω) internal MOSFET and optimized current-mode control architecture. |
| Shutdown Current | 0.01µA max - minimizes battery drain in standby mode for handheld and notebook applications. |
| Feedback Reference Voltage | 1.24V ±1% - provides precise output regulation accuracy across temperature and line variations. |
| Current Limit | 0.55A min - defines maximum sustainable inductor peak current; determines achievable output current under given VIN/VOUT/L conditions. |
Pinout & Package
MAX1896EUT#TG16 is housed in a 6-pin SOT23-6 package (JEDEC MO-178AA), with 0.95mm pitch, 2.9mm × 1.6mm footprint, and exposed pad not present - suitable for high-density PCB layouts with minimal thermal mass.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| LX (Pin 1) | Power switch node | Connects directly to inductor and catch diode anode; requires shortest possible trace to minimize switching noise and EMI. |
| GND (Pin 2) | Analog & power ground reference | Star-ground connection point for FB, SS, and input/output capacitors; must be isolated from noisy power return paths. |
| FB (Pin 3) | Feedback input | Monitors output voltage via resistor divider; sets regulation point at 1.24V; high-impedance (80nA bias) for minimal divider current loss. |
| SHDN (Pin 4) | Enable/disable control | Active-low logic input; drives <50µA; requires >0.1V/µs slew rate; connects to IN for automatic startup or microcontroller GPIO for sequencing. |
| SS (Pin 5) | Soft-start timing node | Charged at 4µA to 0.5V to ramp peak current limit; external capacitor value (e.g., 33nF) sets startup time and inrush control. |
| IN (Pin 6) | Bias & power input | Supplies internal circuitry and gate drive; requires ≥1µF ceramic bypass capacitor placed adjacent to pin to suppress high-frequency ripple. |
Key Features
| Feature | Design Value |
|---|---|
| 1.4MHz fixed-frequency PWM | Enables use of sub-10µH inductors and 0.1µF ceramic output caps - reduces solution size by >40% vs. 300kHz converters. |
| Programmable soft-start | Prevents input inrush and output overshoot during power-up; eliminates need for external sequencers in multi-rail systems. |
| 0.7Ω integrated N-MOSFET | Reduces external component count and conduction losses - delivers 120mA at 12V from 5V input without external switch. |
| LT1613 pin-compatible | Allows direct substitution in legacy designs using Linear Technology's step-up controller - no PCB or firmware changes required. |
| 0.01µA shutdown current | Extends battery life in always-on portable devices; enables deep-sleep modes with microcontroller-controlled wake-up via SHDN. |
Applications
| LCD Display Bias Supply | PCMCIA Card Power |
|---|---|
|
Use Scenario: Generating 12V–13V bias for TFT-LCD source drivers from a 3.3V system rail in ultraportable notebooks. IC Role / Device Role / Timing Role: Primary step-up regulator providing stable, low-noise high-voltage rail with fast transient response to pixel column switching. Use Value: Eliminates need for discrete boost stage + LDO; achieves >90% efficiency at 50mA load while fitting within 6mm² board area. |
Use Scenario: Providing 5V or 12V auxiliary power to PCMCIA Type II cards (e.g., wireless modems, storage adapters) from host 3.3V bus. IC Role / Device Role / Timing Role: Standalone DC-DC converter enabling hot-plug compatible power delivery with controlled startup and shutdown sequencing. Use Value: Meets PCMCIA power specification limits (≤100mA @ 5V, ≤50mA @ 12V) with <1ms soft-start and <1µs shutdown response. |
| Notebook Subsystem Rail | Hand-Held Device Flash Memory Supply |
|
Use Scenario: Powering USB OTG PHY or smart-card interface requiring 5V from a 3.6V Li+ battery in thin-and-light notebooks. IC Role / Device Role / Timing Role: Efficient, low-quiescent-current boost converter supporting dynamic load steps up to 200mA with minimal output droop. Use Value: Delivers 5V/200mA with <50mV load regulation error and <100µs recovery time - avoids brownout during data transfer bursts. |
Use Scenario: Supplying 3.3V or 5V to NAND/NOR flash memory during program/erase cycles in barcode scanners and medical handhelds. IC Role / Device Role / Timing Role: Dedicated high-efficiency boost regulator decoupled from main SoC power domain to prevent noise coupling into sensitive analog sections. Use Value: Maintains ±1% output regulation under 10–100mA pulsed loads; soft-start prevents flash VCC sag that could cause write corruption. |
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 |
|---|---|---|---|
| LT1613CS5#TRMPBF | Same 6-pin SOT23-5 pinout (note: different pin count); 1.4MHz, 0.8Ω switch, 1.25V FB reference; no soft-start pin - uses internal fixed delay. | Requires external RC network for soft-start emulation; lacks SS pin flexibility for custom ramp profiles. | Choose when footprint compatibility is critical and soft-start timing is not design-sensitive. |
| TPS61040DBVR | 28V max output, 0.55Ω switch, 1.22V FB, 0.95µA shutdown; 5-pin SOT23 - missing dedicated SS pin; uses EN pin only. | Higher output voltage capability but no programmable soft-start; lower shutdown current but non-pin-compatible layout. | Choose for higher-VOUT applications (>13V) where SS control is unnecessary and board redesign is acceptable. |
Compared with LT1613CS5#TRMPBF and TPS61040DBVR, MAX1896EUT#TG16 uniquely combines true pin-compatible replacement for LT1613 designs with a dedicated SS pin for precise inrush control - making it optimal for retrofitting legacy portable systems requiring enhanced startup reliability.
Availability
MAX1896EUT#TG16 is available at Aetrix Electronics and suitable for notebook computers, LCD displays, and PCMCIA cards requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for MAX1896EUT#TG16 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, mixed-signal, and power management ICs for industrial, automotive, and portable applications.
The MAX1896EUT#TG16 belongs to Maxim's high-frequency step-up DC-DC converter product line, engineered specifically for space- and efficiency-critical portable electronics where small SOT23 footprint and fast transient response are mandatory.
FAQ
What is the absolute maximum input voltage rating for MAX1896EUT#TG16?
The absolute maximum input voltage (IN to GND) for MAX1896EUT#TG16 is +6V. Exceeding this rating may cause permanent damage. The recommended operating input range remains 2.6V to 5.5V per datasheet specifications. Always observe the 50mV hysteresis UVLO threshold (2.25V–2.55V) to ensure reliable startup behavior across temperature.
Can MAX1896EUT#TG16 generate 12V output from a 3.3V input, and what is the maximum supported load current?
Yes, MAX1896EUT#TG16 can generate 12V from a 3.3V input. At TA = +25°C, it delivers up to 60mA continuously while maintaining >90% efficiency and <1% regulation error. Maximum output current depends on inductor value, diode selection, and thermal environment - typical 10µH inductor with Schottky diode supports ~80mA at 12V with 3.3V input under natural convection.
Is MAX1896EUT#TG16 pin-compatible with LT1613, and what modifications are needed for replacement?
Yes, MAX1896EUT#TG16 is pin-compatible with LT1613 in the 6-pin SOT23 package. No PCB layout changes are required. However, LT1613 uses a 5-pin SOT23 variant; the MAX1896EUT#TG16's sixth pin (SS) is NC on LT1613 - leaving SS unconnected or tied to GND maintains full functionality, though soft-start capability is forfeited.
What is the purpose of the SS pin on MAX1896EUT#TG16, and how is soft-start time calculated?
The SS pin on MAX1896EUT#TG16 controls soft-start duration by accepting an external capacitor charged at 4µA to 0.5V. Soft-start time tSS ≈ 6.67×10⁵ × CSS seconds (e.g., 33nF yields ~22ms). This ramps peak-inductor current linearly to prevent input inrush and output overshoot - critical for powering sensitive analog circuits or flash memory.
Does MAX1896EUT#TG16 support ceramic output capacitors, and what additional component is required?
Yes, MAX1896EUT#TG16 supports ceramic output capacitors, but requires a feedforward capacitor (CFF) connected between FB and output to ensure loop stability. For example, with R1 = 115kΩ, COUT = 10µF ceramic, VOUT = 13V, and VIN = 3.3V, CFF ≈ 100pF is recommended per the datasheet equation - omitting CFF risks oscillation under light loads.
MAX1896EUT#TG16 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Up, Step-Up/Step-Down
- Output Configuration:
- Positive
- Topology:
- Boost, SEPIC
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.6V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 2.6V
- Voltage - Output (Max):
- 13V
- Current - Output:
- 550mA (Switch)
- Frequency - Switching:
- 1.4MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-6
MAX1896EUT#TG16 FAQ
1.How can I place an order for MAX1896EUT#TG16 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1896EUT#TG16 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 MAX1896EUT#TG16 reliable?
The price and inventory of MAX1896EUT#TG16 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1896EUT#TG16 is usually 5 days.
3.What payment methods are accepted for MAX1896EUT#TG16?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1896EUT#TG16 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1896EUT#TG16?
MAX1896EUT#TG16 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1896EUT#TG16 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 MAX1896EUT#TG16?
For technical support, including MAX1896EUT#TG16 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1896EUT#TG16 requirements.
6.How does Aetrix verify that MAX1896EUT#TG16 is sourced from the original manufacturer or authorized distributors?
All MAX1896EUT#TG16 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 MAX1896EUT#TG16 meets industry standards.
7.What is the process for return or replacement of MAX1896EUT#TG16?
All MAX1896EUT#TG16 units undergo pre-shipment inspection (PSI). If there is an issue with MAX1896EUT#TG16, 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 MAX1896EUT#TG16 part is unused and in its original packaging.
Return procedure for MAX1896EUT#TG16:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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