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Analog Devices Inc./Maxim Integrated MAX8887EZK15+T
- Part No.:
- MAX8887EZK15+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
MAX8887EZK15+T.pdf
- Description:
- IC REG LIN 1.5V 300MA TSOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
MAX8887EZK15+T from Maxim Integrated is a low-noise, 1.5V fixed-output, 300mA low-dropout linear regulator in SOT23-5 package, featuring 100mV dropout at 200mA, 42µVRMS output noise, and 55µA no-load supply current. It delivers stable power to noise-sensitive analog circuitry in portable battery-powered systems such as PDAs, cellular handsets, and digital cameras.
For engineers reviewing the MAX8887EZK15+T datasheet, MAX8887EZK15+T pinout, MAX8887EZK15+T application, or MAX8887EZK15+T equivalent, key selection criteria include guaranteed 1.5V output accuracy (±3%), micropower shutdown (0.1µA), thermal/short-circuit protection, and compatibility with 2.2µF ceramic input/output capacitors for stable operation in space-constrained designs.
Technical Context
The MAX8887EZK15+T employs an internal p-channel MOSFET pass transistor with 0.5Ω RDS(ON), enabling ultra-low quiescent current independent of load. Its reference bypass (BP) pin supports external 0.01µF capacitor filtering to achieve 42µVRMS noise performance.
It operates across 2.5V–5.5V input range with input undervoltage lockout at 2.15V–2.4V and maintains regulation down to 100mV dropout at 200mA. Thermal shutdown activates at +170°C with 20°C hysteresis, and foldback current limiting engages when VOUT drops below 93% of nominal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5V ±3% over -40°C to +85°C and 100µA–300mA load - ensures stable core voltage for low-voltage microcontrollers and RF ICs. |
| Dropout Voltage | 100mV at 200mA - enables usable battery life extension down to ~1.7V input for single-cell Li-ion or two-cell alkaline systems. |
| Output Noise | 42µVRMS (10Hz–100kHz, CBP = 0.01µF, COUT = 2.2µF) - suitable for powering ADCs, PLLs, and precision analog sensors without added filtering. |
| No-Load Supply Current | 55µA - minimizes standby drain in always-on subsystems like real-time clocks or wake-up logic. |
| Shutdown Current | 0.1µA - supports deep-sleep modes in portable devices requiring multi-week battery shelf life. |
| PSRR | 60dB at 1kHz - suppresses switching noise from DC-DC converters feeding intermediate rails. |
| Thermal Shutdown | Triggers at +170°C with 20°C hysteresis - protects against sustained overload or poor PCB thermal design without latch-off. |
Pinout & Package
Package: 5-pin SOT23, 1mm height, RoHS-compliant lead-free (Z5-1 package code).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN | Input supply connection | Accepts 2.5V–5.5V; requires 2.2µF ceramic bypass to GND for stability and transient response. |
| 2 - GND | Power ground reference | Low-impedance return path for regulator current and BP capacitor; must be connected directly to system ground plane. |
| 3 - SHDN | Active-low enable control | Pulled low to enter 0.1µA shutdown; tolerates up to 6V regardless of VIN/VOUT; connect to IN for always-on operation. |
| 4 - BP | Reference bypass node | Connects to 0.01µF low-leakage ceramic capacitor to reduce internal reference noise - essential for achieving 42µVRMS spec. |
| 5 - OUT | Regulated output | Delivers up to 300mA; requires 2.2µF ceramic capacitor (ESR < 0.1Ω) to GND for loop stability and load-transient suppression. |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise architecture | 42µVRMS output noise enabled by dedicated BP pin and 0.01µF capacitor - eliminates need for post-regulator LC filters in sensitive signal chains. |
| p-Channel MOSFET pass element | 0.5Ω RDS(ON) and zero base-drive current - maintains 55µA quiescent current even at full 300mA load and in dropout condition. |
| Foldback current limiting | Reduces current limit from 500mA (pulsed) to 420mA when VOUT falls below 93% of 1.5V - prevents thermal runaway during short-circuit or low-VIN events. |
| Thermal protection with hysteresis | +170°C trip and +150°C recovery - enables safe, self-resetting fault handling without external reset circuitry or system intervention. |
| Input UVLO with hysteresis | 2.15V–2.4V threshold with ~2% hysteresis - prevents erratic startup/shutdown cycling near battery end-of-life. |
Applications
| Portable Medical Sensors | Digital Camera Image Sensors |
|---|---|
|
Use Scenario: Powering low-noise analog front-end (AFE) of wearable ECG or pulse oximeter modules operating from coin-cell or Li-ion batteries. IC Role / Device Role / Timing Role: Primary LDO supplying 1.5V bias to instrumentation amplifiers and 16-bit sigma-delta ADCs. Use Value: 42µVRMS noise and 60dB PSRR at 1kHz ensure <1 LSB noise floor degradation in 16-bit measurements without additional filtering. |
Use Scenario: Providing clean 1.5V supply to CMOS image sensor analog core and column ADC during high-speed burst capture. IC Role / Device Role / Timing Role: Dedicated low-noise LDO decoupling sensor analog rail from noisy digital domain and DC-DC converter ripple. Use Value: 100mV dropout extends usable battery voltage range, enabling >20% longer capture time per charge in compact camera modules. |
| Wireless Handset Baseband | PCMCIA Card Power Management |
|
Use Scenario: Regulating 1.5V for baseband processor I/O or memory interface in dual-mode GSM/EDGE handsets with tight board area constraints. IC Role / Device Role / Timing Role: Compact, thermally robust LDO placed adjacent to ASIC die for minimal trace inductance and optimal transient response. Use Value: 55µA quiescent current and 0.1µA shutdown minimize standby drain, supporting >30-day standby on single Li-ion cell. |
Use Scenario: Generating 1.5V for legacy PCMCIA card logic and interface circuitry in industrial data acquisition hosts. IC Role / Device Role / Timing Role: Hot-swap capable LDO with fast load-transient response to handle card insertion/removal-induced current surges. Use Value: Foldback current limiting and thermal hysteresis prevent latch-up during hot-plug events, ensuring reliable field-deployed operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6206P152MR-G | 1.5V fixed, 300mA, 150mV dropout at 100mA, 60µA IQ, no BP pin - higher noise (~120µVRMS), no reference bypass option. | Lacks BP pin and low-noise optimization - unsuitable for precision analog or RF-bias applications requiring sub-50µVRMS. | Select only if board space allows larger output capacitance and noise budget permits >2× higher RMS noise. |
| Diodes Inc. AP2204K-15W5-7 | 1.5V fixed, 300mA, 250mV dropout at 300mA, 85µA IQ, no POK or BP - no noise-reduction capability, higher dropout limits low-VIN runtime. | Higher dropout and no BP pin eliminate use in battery-critical or noise-sensitive roles - limited to non-critical digital I/O rails. | Choose only for cost-driven, non-noise-sensitive digital subsystems where 250mV dropout is acceptable and BP functionality is unused. |
Compared with XC6206P152MR-G and AP2204K-15W5-7, the MAX8887EZK15+T uniquely delivers 42µVRMS noise via BP pin and 100mV dropout at 200mA - critical for extending battery life and preserving signal integrity in portable analog-intensive designs.
Availability
MAX8887EZK15+T is available at Aetrix Electronics and suitable for portable medical sensors, wireless handsets, digital camera modules, PCMCIA cards, and handheld instruments requiring stable component supply with guaranteed long-term sourcing.
Supply support for MAX8887EZK15+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 MAX8887/MAX8888 product line was designed specifically for battery-powered portable electronics requiring ultra-low noise, micropower operation, and small-footprint LDO regulation - targeting PDAs, cellular handsets, and imaging devices.
FAQ
What is the output voltage tolerance of the MAX8887EZK15+T over temperature and load?
The MAX8887EZK15+T guarantees ±3% output voltage accuracy across the full -40°C to +85°C temperature range and for load currents from 100µA to 300mA. At +25°C and 100mA load, typical deviation is ±1.2%. This tight tolerance ensures reliable operation of 1.5V-core logic and analog circuits without external trimming or feedback adjustment. The MAX8887EZK15+T achieves this using a laser-trimmed internal resistor divider and a stable 1.25V bandgap reference.
Does the MAX8887EZK15+T require an external capacitor on the BP pin, and why?
Yes, the MAX8887EZK15+T requires a 0.01µF low-leakage ceramic capacitor between the BP pin and GND to achieve its specified 42µVRMS output noise. This capacitor forms a low-pass filter on the internal reference voltage, suppressing high-frequency noise that would otherwise modulate the error amplifier. Without it, output noise rises significantly - the MAX8887EZK15+T's BP pin is not optional for low-noise operation, unlike many standard LDOs without dedicated reference bypassing.
Can the MAX8887EZK15+T be used with ceramic output capacitors, and what ESR is required?
Yes, the MAX8887EZK15+T is fully compatible with ceramic output capacitors, and Maxim specifies a maximum ESR of 0.1Ω for stability and optimal transient response. A 2.2µF X5R or X7R ceramic capacitor meeting this ESR requirement is recommended and validated in the typical operating circuit. Using higher-ESR capacitors (e.g., tantalum) may cause instability or excessive output voltage overshoot during load transients - the MAX8887EZK15+T's compensation is optimized for low-ESR ceramics.
What happens to the output during shutdown of the MAX8887EZK15+T?
When the SHDN pin is pulled low, the MAX8887EZK15+T disconnects the internal pass transistor, driving the OUT pin low through an internal ~650Ω–1100Ω discharge resistor. This actively discharges the output capacitor, preventing floating or slow decay of the 1.5V rail. The device draws only 0.1µA supply current in shutdown. Unlike some LDOs, the MAX8887EZK15+T does not leave OUT floating - this controlled discharge helps synchronize power sequencing in multi-rail systems.
How does the MAX8887EZK15+T handle thermal overload conditions?
The MAX8887EZK15+T incorporates thermal shutdown that activates at +170°C junction temperature and recovers at +150°C (20°C hysteresis). During continuous overload, it cycles on/off - delivering pulsed output rather than latching off. This self-resetting behavior protects the IC without requiring manual reset or external circuitry. The MAX8887EZK15+T's 727mW max power dissipation at +70°C ambient assumes proper PCB copper pour; exceeding this without thermal relief will trigger repeated cycling.
MAX8887EZK15+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 100 µA
- Current - Supply (Max):
- 65 µA
- PSRR:
- 60dB (1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-5
MAX8887EZK15+T FAQ
1.How can I place an order for MAX8887EZK15+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8887EZK15+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 MAX8887EZK15+T reliable?
The price and inventory of MAX8887EZK15+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8887EZK15+T is usually 5 days.
3.What payment methods are accepted for MAX8887EZK15+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8887EZK15+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8887EZK15+T?
MAX8887EZK15+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8887EZK15+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 MAX8887EZK15+T?
For technical support, including MAX8887EZK15+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8887EZK15+T requirements.
6.How does Aetrix verify that MAX8887EZK15+T is sourced from the original manufacturer or authorized distributors?
All MAX8887EZK15+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 MAX8887EZK15+T meets industry standards.
7.What is the process for return or replacement of MAX8887EZK15+T?
All MAX8887EZK15+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX8887EZK15+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 MAX8887EZK15+T part is unused and in its original packaging.
Return procedure for MAX8887EZK15+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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