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Analog Devices Inc./Maxim Integrated MAX8877EZK15+T
- Part No.:
- MAX8877EZK15+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
MAX8877EZK15+T.pdf
- Description:
- IC REG LIN 1.5V 150MA TSOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,979
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Product details
Overview
MAX8877EZK15+T from Maxim Integrated is a low-noise, low-dropout linear regulator with 1.5V fixed output, 150mA maximum output current, 165mV dropout at full load, 30µVRMS output noise, and 100µA operating supply current. It uses an internal P-channel MOSFET pass transistor and targets battery-powered portable electronics requiring stable, quiet voltage regulation.
For engineers reviewing the MAX8877EZK15+T datasheet, MAX8877EZK15+T pinout, MAX8877EZK15+T application, or MAX8877EZK15+T equivalent, key selection criteria include dropout performance at 150mA, shutdown current (10nA), reverse battery protection, thermal shutdown behavior, and BP-capacitor–dependent noise reduction.
Technical Context
The MAX8877EZK15+T implements a P-channel MOSFET pass element with 1.1Ω typical RDS(ON), enabling low dropout and eliminating base-drive current loss. Its error amplifier compares a 1.25V bandgap reference against feedback from an internal resistor divider tied to the OUT pin.
It integrates reverse-battery protection that limits reverse current to 1mA when IN or SHDN falls below GND, plus thermal shutdown at +155°C with 15°C hysteresis. The BP pin connects to an internal 200kΩ resistor forming an 80Hz low-pass filter with an external 0.01µF capacitor to suppress reference noise.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5V ±1.4% over -40°C to +85°C - ensures stable core logic or analog sensor biasing without external feedback. |
| Max Output Current | 150mA - sufficient for single-core microcontrollers, RF front-ends, or small LCD bias rails in portable devices. |
| Dropout Voltage | 165mV at 150mA - enables operation down to 1.65V input, extending usable life of single-cell Li-ion or NiMH batteries. |
| Output Noise | 30µVRMS (10Hz–100kHz, CBP = 0.01µF, COUT = 10µF) - supports noise-sensitive analog circuits like ADC references or audio preamps. |
| Quiescent Current | 100µA across load and dropout conditions - preserves battery runtime in always-on or low-duty-cycle systems. |
| Shutdown Current | 10nA - reduces standby power to negligible levels during deep sleep modes in handheld instruments or modems. |
| Input Voltage Range | 2.5V to 6.5V - accommodates single-cell Li-ion (2.7–4.2V), dual-cell alkaline (2.4–3.2V), or regulated 3.3V/5V system rails. |
Pinout & Package
MAX8877EZK15+T is housed in a 5-pin thin SOT23 package (JEDEC MO-178AA), optimized for space-constrained portable PCBs. The GND pin serves as both electrical return and thermal path; soldering to a large copper pour improves power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN | Regulator input | Accepts 2.5V–6.5V supply; requires ≥1µF ceramic bypass to GND for stability and line-transient suppression. |
| 2 - GND | Ground reference & thermal pad | Primary return path and heatsink; must connect to large PCB copper area to sustain 727mW max power dissipation. |
| 3 - SHDN | Active-low enable control | Pulls <10nA in shutdown; drives output to high-impedance (no auto-discharge - distinguishes MAX8877 from MAX8878). |
| 4 - BP | Bypass reference node | Connects to 0.01µF ceramic capacitor to reduce bandgap reference noise; sets output noise floor and startup time. |
| 5 - OUT | Regulated output | Delivers up to 150mA at 1.5V; requires ≥3.3µF ceramic capacitor (ESR <0.2Ω) for stability at VOUT < 2.5V. |
Key Features
| Feature | Design Value |
|---|---|
| P-channel MOSFET pass transistor | Eliminates base-drive current loss, enabling constant 100µA IQ across load and dropout - critical for battery longevity. |
| Reverse battery protection | Clamps reverse current to ≤1mA when IN or SHDN goes negative - prevents damage during incorrect battery insertion. |
| Thermal shutdown with hysteresis | Shuts down at +155°C and re-enables only after cooling by 15°C - avoids oscillation and enables safe fault recovery. |
| 1.5V output accuracy | ±1.4% over full temperature/load range - eliminates need for post-regulation trimming in precision analog subsystems. |
| Low-noise BP filtering | Internal 200kΩ resistor + external 0.01µF forms 80Hz LPF - reduces reference noise contribution to 30µVRMS total output noise. |
Applications
| Cellular Handsets | PCMCIA Cards |
|---|---|
|
Use Scenario: Powering baseband processor I/O rails and SIM card interface in GSM/CDMA handsets. IC Role / Device Role / Timing Role: Primary 1.5V LDO supplying noise-sensitive digital logic with tight voltage tolerance and fast load transient response. Use Value: 165mV dropout extends talk-time by enabling operation until battery voltage drops to 1.65V; 30µVRMS noise prevents bit errors in serial communication links. |
Use Scenario: Regulating 1.5V supply for PCMCIA card controller ASICs and flash memory interfaces. IC Role / Device Role / Timing Role: Standby-power-optimized LDO delivering clean 1.5V during card insertion detection and low-power suspend states. Use Value: 10nA shutdown current minimizes host-system standby drain; reverse battery protection guards against hot-swap misinsertion. |
| Hand-Held Instruments | Electronic Planners |
|
Use Scenario: Supplying 1.5V to precision ADC front-ends and low-power microcontrollers in portable multimeters or data loggers. IC Role / Device Role / Timing Role: Low-noise, high-accuracy voltage source for analog signal chain biasing and reference stabilization. Use Value: ±1.4% output accuracy and 30µVRMS noise ensure sub-LSB measurement integrity; 100µA IQ supports multi-week battery life on coin cells. |
Use Scenario: Providing 1.5V core voltage to real-time clock (RTC) and SRAM backup circuits in PDAs and organizers. IC Role / Device Role / Timing Role: Always-on LDO maintaining RTC accuracy and memory retention during main system power-off. Use Value: Stable 1.5V output across -40°C to +85°C ensures RTC drift <1ppm/°C; 10nA shutdown current enables >1-year SRAM retention on CR2032. |
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 |
|---|---|---|---|
| TPS76315DBVR | 1.5V fixed, 150mA, 220mV dropout at 150mA, 35µVRMS noise, 85µA IQ, SOT23-5 | Higher dropout reduces usable battery range; slightly higher noise may affect ultra-low-noise analog stages | Preferred where lower quiescent current (85µA vs. 100µA) is prioritized over dropout and noise performance |
| MCP1700T-1502E/TT | 1.5V fixed, 250mA, 600mV dropout at 250mA, 30µVRMS noise, 1.6µA IQ, SOT23-3 | 3-pin package lacks SHDN and BP pins; no reverse battery or thermal protection; much higher dropout | Suitable for cost-sensitive, non-critical applications where shutdown control and robustness are not required |
Compared with TPS76315DBVR and MCP1700T-1502E/TT, MAX8877EZK15+T delivers superior dropout (165mV), integrated reverse-battery protection, and active thermal shutdown - making it the optimal choice for ruggedized, battery-life–critical portable designs despite marginally higher IQ.
Availability
MAX8877EZK15+T is available at Aetrix Electronics and suitable for cellular handsets, PCMCIA cards, hand-held instruments, and electronic planners requiring stable component supply, long-term lifecycle support, and guaranteed parametric compliance.
Supply support for MAX8877EZK15+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 MAX8877 series was designed specifically for ultra-low-noise, low-quiescent-current regulation in space-constrained, battery-powered portable electronics - emphasizing dropout efficiency, thermal resilience, and protection robustness.
FAQ
What is the output voltage tolerance of the MAX8877EZK15+T over temperature and load?
The MAX8877EZK15+T guarantees ±1.4% output voltage accuracy across the full -40°C to +85°C operating temperature range and for output currents from 0.1mA to 120mA. This specification holds for both 1.5V nominal output and applies regardless of input voltage within the 2.5V–6.5V range, ensuring reliable operation in portable equipment exposed to wide ambient conditions.
Does the MAX8877EZK15+T include auto-discharge functionality during shutdown?
No, the MAX8877EZK15+T does not include auto-discharge. That feature is exclusive to the MAX8878 family. When placed in shutdown (SHDN = low), the MAX8877EZK15+T disables regulation and places the OUT pin in high-impedance state, but does not actively discharge the output capacitor - external circuitry is required if rapid output decay is needed.
What capacitor values are required for stable operation of the MAX8877EZK15+T?
For stable operation, the MAX8877EZK15+T requires a minimum 3.3µF ceramic output capacitor (ESR < 0.2Ω) due to its 1.5V output voltage (<2.5V threshold). The input capacitor should be ≥1µF ceramic. A 0.01µF ceramic capacitor is mandatory on the BP pin to achieve specified 30µVRMS noise performance and proper startup behavior.
How does the MAX8877EZK15+T protect against reverse battery connection?
The MAX8877EZK15+T monitors polarity on both IN and SHDN pins. If either falls below GND, internal circuitry disconnects parasitic paths and limits reverse current to ≤1mA - preventing damage during accidental reverse battery installation in handheld devices. This protection operates independently of enable state and requires no external components.
What is the thermal shutdown behavior of the MAX8877EZK15+T?
The MAX8877EZK15+T activates thermal shutdown at +155°C junction temperature and remains off until the die cools by 15°C (to +140°C), providing hysteresis to prevent oscillation. During sustained overload, this results in pulsed output operation - a fail-safe mechanism that protects the device while allowing partial functionality during intermittent thermal stress.
MAX8877EZK15+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):
- 6.5V
- Voltage - Output (Min/Fixed):
- 1.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.165V @ 150mA (Typ)
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 180 µA
- Current - Supply (Max):
- 100 µA
- PSRR:
- -
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity, Short Circuit
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-5
MAX8877EZK15+T FAQ
1.How can I place an order for MAX8877EZK15+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8877EZK15+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 MAX8877EZK15+T reliable?
The price and inventory of MAX8877EZK15+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8877EZK15+T is usually 5 days.
3.What payment methods are accepted for MAX8877EZK15+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8877EZK15+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8877EZK15+T?
MAX8877EZK15+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8877EZK15+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 MAX8877EZK15+T?
For technical support, including MAX8877EZK15+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8877EZK15+T requirements.
6.How does Aetrix verify that MAX8877EZK15+T is sourced from the original manufacturer or authorized distributors?
All MAX8877EZK15+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 MAX8877EZK15+T meets industry standards.
7.What is the process for return or replacement of MAX8877EZK15+T?
All MAX8877EZK15+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX8877EZK15+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 MAX8877EZK15+T part is unused and in its original packaging.
Return procedure for MAX8877EZK15+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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