My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX1659ESA+T
- Part No.:
- MAX1659ESA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX1659ESA+T.pdf
- Description:
- IC REG LIN POS ADJ 350MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,490
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
The MAX1659ESA+T from Maxim Integrated is a 5V fixed-output, 350mA low-dropout linear regulator with p-channel MOSFET pass element, 490mV dropout at full load, 30μA quiescent current, and 1μA shutdown current-designed for battery-powered portable electronics requiring stable voltage under varying input and load conditions.
For engineers reviewing the MAX1659ESA+T datasheet, MAX1659ESA+T pinout, MAX1659ESA+T application, or MAX1659ESA+T equivalent, key selection criteria include its -40°C to +85°C operating range, 8-pin SO package with integrated thermal enhancement via multiple IN pins, Dual Mode™ output configuration (fixed 5V or adjustable), reverse-battery protection, and compatibility with low-ESR output capacitors down to 10μF.
Technical Context
The MAX1659ESA+T uses a p-channel MOSFET pass transistor to maintain ultra-low quiescent current across 0–350mA load range, including dropout operation. Its Dual Mode™ comparator monitors the SET pin voltage against a 65mV threshold to select between internal fixed-feedback (5V) or external resistive divider (1.25V–16V).
Thermal protection activates at +165°C junction temperature with 10°C hysteresis; reverse-battery protection disables substrate connection when VIN < GND (down to -17V); shutdown deactivates all circuitry except SHDN bias, drawing ≤1μA while placing OUT in high-impedance state.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.00V ±1.5% (guaranteed over -40°C to +85°C, 6V ≤ VIN ≤ 16.5V) |
| Max Output Current | 350mA continuous; supports short-circuit indefinitely without damage |
| Dropout Voltage | 490mV typical at 350mA (enables regulation with VIN as low as 5.49V for 5V output) |
| Quiescent Current | 30μA typical at no load; remains stable up to 350mA (no base-drive loss) |
| Shutdown Current | ≤1μA (reduces system standby power in portable devices) |
| Input Voltage Range | 2.7V to 16.5V (supports single-cell Li-ion to multi-cell alkaline/battery stacks) |
| PSRR | 55dB at 50Hz/60Hz (rejects wall-adapter ripple); >40dB up to 10kHz |
| Output Noise | 2.5mVP-P, 10Hz–100kHz (suitable for noise-sensitive analog/RF subsystems) |
Pinout & Package
The MAX1659ESA+T is housed in an 8-pin SO package (S8+10F outline) with enhanced thermal performance: IN pins (3,6,7) serve dual roles as electrical inputs and heatsinks; copper plane connection to all three IN pins is required for 1.2W power dissipation capability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SET) | Output-voltage feedback selector | Grounding selects fixed 5V mode; external resistor divider enables 1.25V–16V adjustment; <25nA leakage preserves accuracy with high-value resistors |
| 2 (SHDN) | Logic-controlled enable/disable input | Active-low; <0.4V = shutdown (≤1μA IQ); >2.0V = active; 120μs startup time ensures fast wake-up |
| 3,6,7 (IN) | Main unregulated input supply | Accepts 2.7V–16.5V; pins share current path and conduct heat to PCB copper; must be tied together externally |
| 4,5 (OUT) | Regulated output terminal | Delivers up to 350mA; requires ≥10μF low-ESR capacitor to GND for stability and transient response |
| 8 (GND) | Analog and power reference ground | Common return for SET, SHDN, and feedback network; separate from thermal pad (no exposed pad in SO) |
Key Features
| Feature | Design Value |
|---|---|
| Dual Mode™ output selection | Zero-component fixed 5V operation or precision-adjustable output using two external resistors-no mode-select pin or configuration register needed |
| p-Channel MOSFET pass element | Eliminates base-drive current loss, enabling constant 30μA quiescent current from zero to full 350mA load-including dropout |
| Reverse-battery protection | Automatically disconnects substrate when VIN < GND (to -17V), preventing latch-up and damage in accidental battery reversal |
| Thermal shutdown with hysteresis | Shuts down at +165°C junction temperature and re-enables only after cooling by 10°C-prevents thermal cycling during overload |
| High-power SO package | θJB = 69°C/W (vs. 170°C/W standard SO), enabling 1.2W dissipation with proper PCB copper area-critical for compact battery-powered designs |
Applications
| Cellular Phones | Digital Cordless Phones |
|---|---|
Use Scenario: Powering RF transceivers and baseband processors in GSM/CDMA handsets with wide battery voltage swing (3.2V–4.2V). IC Role / Device Role / Timing Role: Primary 5V LDO supplying noise-sensitive analog front-end and PLL circuits. Use Value: 490mV dropout allows usable runtime down to 5.49V input-extending talk time on aging or cold batteries. | Use Scenario: Regulating 5V rail for DSP, LCD controller, and audio codec in 900MHz/2.4GHz DECT handsets. IC Role / Device Role / Timing Role: Main system regulator delivering clean 5V from 3×AA/AAA battery stack (4.5V–6.0V). Use Value: 2.5mVP-P output noise prevents audible artifacts in speaker/headphone output. |
| PCMCIA Cards | Hand-Held Instruments |
Use Scenario: Providing isolated 5V supply to PCMCIA Type II cards inserted into laptops or industrial hosts. IC Role / Device Role / Timing Role: Hot-swap compatible LDO with reverse-battery protection and 1μA shutdown for card presence detection. Use Value: Withstands -17V reverse input during insertion/removal glitches-eliminating need for external blocking diode. | Use Scenario: Powering microcontroller, ADC, and display in portable multimeters and data loggers running on 4×AA cells. IC Role / Device Role / Timing Role: System power manager enabling deep-sleep modes with <1μA shutdown current. Use Value: 30μA quiescent current extends battery life to >1 year in low-duty-cycle measurement applications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-dropout linear regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS76350DBVR | Fixed 5V output, 150mA max, 170mV dropout at 150mA, SOT-23-5 package | Limited to lower current and smaller thermal mass; lacks reverse-battery protection and Dual Mode adjustability | Choose for space-constrained, low-current designs where 150mA suffices and reverse-battery risk is absent |
| MCP1703T-5002E/MB | Fixed 5V output, 250mA max, 600mV dropout at 250mA, SOT-23-5 package | Higher dropout reduces usable input range; no reverse-battery or thermal hysteresis features | Prefer for cost-sensitive, non-battery-reversal environments with moderate load and relaxed dropout requirements |
Compared with TPS76350DBVR and MCP1703T-5002E/MB, the MAX1659ESA+T delivers 40% higher output current, 3× lower quiescent current at full load, integrated reverse-battery protection, and Dual Mode flexibility-making it uniquely suited for robust, high-efficiency portable systems demanding 350mA at minimal dropout and ultra-low standby power.
Availability
The MAX1659ESA+T is available at Aetrix Electronics and suitable for cellular phones, digital cordless phones, PCMCIA cards, and hand-held instruments requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX1659ESA+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 MAX1658/MAX1659 product line was designed specifically for micropower, wide-input-voltage LDO regulation in battery-powered portable equipment-emphasizing ultra-low IQ, reverse-battery resilience, and thermal robustness in compact SO packages.
FAQ
What is the guaranteed output voltage tolerance for MAX1659ESA+T over temperature?
The MAX1659ESA+T guarantees a 5.00V output with ±1.5% tolerance over the full -40°C to +85°C operating range, as specified in the Electrical Characteristics table for VIN = 6V to 16.5V and ILOAD = 0–350mA. This tolerance includes initial accuracy, line regulation (0.05%/V), and load regulation (0.003%/mA) contributions-ensuring stable 5V delivery across battery discharge and ambient variation.
Can MAX1659ESA+T operate with an input voltage below 2.7V?
No, the MAX1659ESA+T is not specified or guaranteed to operate below 2.7V input. Absolute Maximum Ratings define -17V to +17V survival limits, but functional operation requires VIN ≥ 2.7V per the Input Voltage Range specification. Below 2.7V, regulation fails, dropout behavior becomes undefined, and internal bias circuits may cease functioning-so designs must ensure minimum battery voltage stays above this threshold.
Does MAX1659ESA+T require an external capacitor on the SET pin?
No, the MAX1659ESA+T does not require an external capacitor on the SET pin. The SET input has <25nA leakage current and is internally referenced; it functions correctly with direct connection to GND (for fixed 5V mode) or to a resistive divider (for adjustable mode). Adding capacitance risks destabilizing the feedback loop and is neither recommended nor used in any typical application circuit shown in the datasheet.
How does the thermal shutdown of MAX1659ESA+T behave under sustained overload?
Under sustained overload, the MAX1659ESA+T's thermal shutdown activates at +165°C junction temperature and holds the pass transistor off until the die cools by 10°C (to +155°C), then re-enables regulation. This hysteresis prevents rapid on/off cycling. During overload, the output pulses at low duty cycle-providing intermittent power but not continuous regulation-so sustained operation in thermal shutdown is not recommended for reliability.
Is MAX1659ESA+T RoHS-compliant and lead(Pb)-free?
Yes, the "+" suffix in MAX1659ESA+T explicitly denotes a lead(Pb)-free and RoHS-compliant package per Maxim Integrated's ordering nomenclature. The device meets EU RoHS Directive 2011/65/EU requirements and uses matte-tin lead finish on the 8-pin SO package-verified in the Ordering Information section and Package Information page of the official datasheet.
MAX1659ESA+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:
- Active
- Output Configuration:
- Positive
- Output Type:
- Adjustable (Fixed)
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 16.5V
- Voltage - Output (Min/Fixed):
- 1.25V (5V)
- Voltage - Output (Max):
- 16V
- Voltage Dropout (Max):
- 0.875V @ 350mA
- Current - Output:
- 350mA
- Current - Quiescent (Iq):
- 60 µA
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX1659ESA+T FAQ
1.How can I place an order for MAX1659ESA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1659ESA+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 MAX1659ESA+T reliable?
The price and inventory of MAX1659ESA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1659ESA+T is usually 5 days.
3.What payment methods are accepted for MAX1659ESA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1659ESA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1659ESA+T?
MAX1659ESA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1659ESA+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 MAX1659ESA+T?
For technical support, including MAX1659ESA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1659ESA+T requirements.
6.How does Aetrix verify that MAX1659ESA+T is sourced from the original manufacturer or authorized distributors?
All MAX1659ESA+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 MAX1659ESA+T meets industry standards.
7.What is the process for return or replacement of MAX1659ESA+T?
All MAX1659ESA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX1659ESA+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 MAX1659ESA+T part is unused and in its original packaging.
Return procedure for MAX1659ESA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX1659ESA+T Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
