My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX1598EZK33-T
- Part No.:
- MAX1598EZK33-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
MAX1598EZK33-T.pdf
- Description:
- IC REG LINEAR 200MA LDO REG
- Quantity:
- Payment:
- Shipping:
Inventory:7,430
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX1598EZK33-T from Maxim Integrated is a low-noise, low-dropout linear regulator with preset 3.3V output, 200mA load capability, 30µVRMS output noise, and 236mV dropout at full load - designed for battery-powered portable electronics requiring stable, clean power under varying input conditions.
For engineers reviewing the MAX1598EZK33-T datasheet, MAX1598EZK33-T pinout, MAX1598EZK33-T application, or MAX1598EZK33-T equivalent, key selection factors include its 100µA operating supply current in dropout, 10nA shutdown current, reverse battery protection, autodischarge function, and thin SOT23-5 package compatibility with space-constrained handheld designs.
Technical Context
The MAX1598EZK33-T uses an internal P-channel MOSFET pass transistor (1.1Ω typical RDS(ON)) to achieve low quiescent current independent of load or dropout condition. Its error amplifier compares a 1.25V bandgap reference against feedback from an internal resistor divider tied to the OUT pin.
Noise reduction is implemented via a dedicated BP pin with external 0.01µF capacitor forming an 80Hz low-pass filter; thermal shutdown activates at +155°C with 15°C hysteresis, and reverse battery protection limits reverse current to 1mA when VIN or SHDN falls below ground.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Preset 3.3V ±3% over -40°C to +85°C - eliminates external feedback resistors and ensures stable rail for 3.3V logic and RF subsystems. |
| Max Output Current | 200mA continuous - supports moderate-power microcontrollers, sensors, and baseband ICs in portable devices. |
| Dropout Voltage | 236mV at 200mA - enables operation down to ~3.53V input, extending usable battery life in single-cell Li-ion or dual-cell alkaline systems. |
| Output Noise | 30µVRMS (10Hz–100kHz) with CBP = 0.01µF - meets stringent noise requirements for RF receivers, ADC references, and precision analog circuits. |
| Quiescent Current | 100µA across load and dropout - maintains ultra-low standby power without sacrificing regulation performance. |
| Shutdown Current | 10nA logic-controlled shutdown - reduces system-level leakage during deep sleep modes in battery-critical applications. |
| Thermal Protection | Shuts down at +155°C with 15°C hysteresis - prevents permanent damage during sustained overload or poor PCB thermal design. |
Pinout & Package
MAX1598EZK33-T is housed in a thin 5-pin SOT23 package (JEDEC MO-178AA), with exposed pad not electrically connected - requires soldering GND pin to large copper area for thermal management.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN | Regulator input | Accepts 2.5V–6.5V supply; bypass with ≥1µF ceramic capacitor to GND for line transient immunity. |
| 2 - GND | Ground reference & thermal path | Serves as electrical return and primary heat sink - must connect to large PCB copper area for >727mW dissipation. |
| 3 - SHDN | Active-low enable control | Pulls output to GND and reduces IQ to 10nA when logic low; tie to IN for always-on operation. |
| 4 - BP | Bypass for reference noise filter | Connects to 0.01µF ceramic capacitor to reduce output voltage noise by filtering 1.25V reference ripple. |
| 5 - OUT | Regulated output | Delivers up to 200mA at 3.3V; requires ≥2.2µF ceramic capacitor (ESR < 0.2Ω) for stability across temperature and load. |
Key Features
| Feature | Design Value |
|---|---|
| Autodischarge function | Actively pulls OUT to GND during shutdown - prevents floating outputs and unintended biasing of downstream circuitry. |
| Reverse battery protection | Limits reverse current to ≤1mA when VIN or SHDN < 0V - protects device and system from accidental battery reversal damage. |
| Stable with low-ESR ceramics | Guaranteed stable with 2.2µF X7R/X5R capacitors (no tantalum required) - simplifies BOM and improves reliability in wide-temp environments. |
| Load-independent quiescent current | Maintains 100µA IQ from no-load to 200mA and across dropout - enables predictable battery life modeling regardless of system activity state. |
| Short-circuit robustness | Withstands indefinite output short to GND - eliminates need for external fuse or current-limiting circuitry in end equipment. |
Applications
| Cellular Handsets | PCMCIA Cards |
|---|---|
Use Scenario: Powering baseband processor core and RF transceiver sections in GSM/CDMA handsets with single Li-ion cell. IC Role / Device Role / Timing Role: Primary 3.3V LDO delivering clean, low-noise supply to sensitive analog and digital blocks during transmit/receive bursts. Use Value: 30µVRMS noise and fast load-transient response (<12mV deviation for 0→50mA step) prevent RF desense and digital corruption. |
Use Scenario: Providing regulated 3.3V rail for PCMCIA card controllers and interface logic in laptop expansion slots. IC Role / Device Role / Timing Role: Local point-of-load regulator isolating card circuitry from noisy host bus power and enabling hot-swap compatibility. Use Value: Reverse battery protection and autodischarge prevent backfeed and latch-up during card insertion/removal sequences. |
| Hand-Held Instruments | Palmtop Computers |
Use Scenario: Supplying precision analog front-end (AFE), ADC reference, and microcontroller in portable multimeters or data loggers. IC Role / Device Role / Timing Role: Low-noise, high-accuracy voltage source ensuring measurement integrity across battery discharge curve. Use Value: ±3% output accuracy over temperature and 236mV dropout allow operation down to 3.53V input - maximizing usable battery capacity. |
Use Scenario: Regulating 3.3V for CPU I/O, memory interface, and display controller in compact palmtop PDAs. IC Role / Device Role / Timing Role: Compact, thermally efficient local regulator supporting burst-mode processing while minimizing PCB real estate. Use Value: Thin SOT23-5 footprint and 100µA dropout IQ enable long idle-time battery life without compromising peak performance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS76333DBVR | Higher 250mV dropout at 200mA; 50µVRMS noise; no reverse battery protection or autodischarge. | Lacks reverse polarity hardening and active discharge - unsuitable for field-replaceable battery compartments. | Choose only if board-level reverse protection exists and noise tolerance >30µVRMS is acceptable. |
| MCP1703T-3302E/MB | 350mV dropout at 250mA; 40µVRMS noise; 2µA shutdown current (vs. 10nA); no BP pin or autodischarge. | Higher shutdown IQ and missing autodischarge limit deep-sleep energy savings in always-on sensor nodes. | Select when cost sensitivity outweighs ultra-low shutdown IQ and active discharge requirements. |
Compared with TPS76333DBVR and MCP1703T-3302E/MB, the MAX1598EZK33-T uniquely combines sub-250mV dropout, 30µVRMS noise, 10nA shutdown, reverse battery protection, and autodischarge - making it optimal for space-constrained, battery-critical portable systems where reliability and efficiency are co-prioritized.
Availability
MAX1598EZK33-T is available at Aetrix Electronics and suitable for cellular handsets, PCMCIA cards, and hand-held instruments requiring stable component supply, consistent parametric performance, and long-term lifecycle support.
Supply support for MAX1598EZK33-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 U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and consumer applications.
The MAX1598 series was designed specifically for battery-powered portable electronics - emphasizing ultra-low quiescent current, low noise, reverse polarity resilience, and minimal board area in thin SOT23 packaging.
FAQ
What is the exact output voltage tolerance of the MAX1598EZK33-T over temperature?
The MAX1598EZK33-T has a guaranteed output voltage accuracy of –3% to +2% over the full operating temperature range of –40°C to +85°C, with typical deviation tighter than ±1% at +25°C. This specification applies specifically to the MAX1598EZK33-T variant with factory-preset 3.3V output and is confirmed in the Electrical Characteristics table under "Output Voltage Accuracy".
Does the MAX1598EZK33-T require an external BP capacitor, and what happens if it's omitted?
Yes, the MAX1598EZK33-T requires a 0.01µF ceramic capacitor on the BP pin to achieve its specified 30µVRMS output noise. Omitting this capacitor increases output noise significantly - measurements show noise rises to ~80µVRMS without BP bypass - degrading performance in noise-sensitive applications like RF receivers or precision ADCs.
Can the MAX1598EZK33-T be used with input voltages below 2.5V?
No - the MAX1598EZK33-T has a minimum input voltage rating of 2.5V per Absolute Maximum Ratings and Electrical Characteristics tables. Operation below 2.5V is not characterized, may result in loss of regulation, and risks violating the device's functional specifications. For sub-2.5V inputs, alternative regulators such as the MAX8867 should be evaluated.
How does the autodischarge function of the MAX1598EZK33-T operate during shutdown?
When the MAX1598EZK33-T enters shutdown (SHDN pin pulled low), its internal autodischarge circuit actively sinks current from the OUT pin to GND through a 300Ω internal resistance - discharging a 2.2µF output capacitor from 3.3V to <100mV in under 1ms. This prevents residual voltage from powering downstream circuitry unintentionally.
Is the MAX1598EZK33-T pin-compatible with other variants in the MAX1598 family?
Yes - all MAX1598 variants, including MAX1598EZK33-T, share identical thin SOT23-5 pinout and package dimensions. The only differences are factory-preset output voltages (e.g., 2.5V, 3.0V, 3.3V, 5.0V); no PCB layout change is needed when substituting between MAX1598EZKxx-T parts with same package code.
MAX1598EZK33-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- Packaging:
- Bulk
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6.5V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.236V @ 200mA
- Current - Output:
- 200mA
- Current - Quiescent (Iq):
- 180 µA
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- Enable
- Protection Features:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-5
MAX1598EZK33-T FAQ
1.How can I place an order for MAX1598EZK33-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1598EZK33-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 MAX1598EZK33-T reliable?
The price and inventory of MAX1598EZK33-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1598EZK33-T is usually 5 days.
3.What payment methods are accepted for MAX1598EZK33-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1598EZK33-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1598EZK33-T?
MAX1598EZK33-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1598EZK33-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 MAX1598EZK33-T?
For technical support, including MAX1598EZK33-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1598EZK33-T requirements.
6.How does Aetrix verify that MAX1598EZK33-T is sourced from the original manufacturer or authorized distributors?
All MAX1598EZK33-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 MAX1598EZK33-T meets industry standards.
7.What is the process for return or replacement of MAX1598EZK33-T?
All MAX1598EZK33-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX1598EZK33-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 MAX1598EZK33-T part is unused and in its original packaging.
Return procedure for MAX1598EZK33-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX1598EZK33-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
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
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…
