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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Special Purpose Regulators

Analog Devices Inc./Maxim Integrated MAX15059BATE+T

Name: MAX15059BATE+T
Brand: Analog Devices Inc./Maxim Integrated
SKU: MAX15059BATE+T
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MAX15059BATE+T

Manufacturer:: Analog Devices Inc./Maxim Integrated

Category:: Special Purpose Regulators

Package:: 16-WFQFN Exposed Pad

Datasheet:: MAX15059BATE+T.pdf

Description:: IC REG CONV APD 1OUT 16TQFN

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Product details

Overview

The MAX15059BATE+T from Maxim Integrated is a constant-frequency (400kHz) current-mode PWM step-up DC-DC converter with integrated 80V lateral DMOS switch and high-side APD current monitor. It delivers up to 200mW output power, supports output voltages from (VIN + 5V) to 76V, operates from 2.8V–5.5V input, features ±5% current monitoring accuracy (5:1 gain), and includes resistor-adjustable ultra-fast (1µs) APD current limiting - optimized for avalanche photodiode biasing in fiber-optic receivers.

For engineers reviewing the MAX15059BATE+T datasheet, MAX15059BATE+T pinout, MAX15059BATE+T application, or MAX15059BATE+T equivalent, key selection considerations include its 16-pin TQFN-EP package, -40°C to +125°C operating range, 5:1 current-monitor gain ratio, 200mW output capability (vs. 300mW for MAX15059A), and dedicated APD bias/monitoring architecture with clamp-protected MOUT output.

Technical Context

This device implements a fixed-frequency current-mode PWM controller operating in discontinuous conduction mode (DCM) to minimize switching noise and eliminate external compensation. Its direct-summing comparator architecture replaces traditional error amplifiers, enabling cycle-by-cycle peak-current regulation without slope compensation.

The integrated current monitor provides 5:1 gain (MAX15059B variant), supports 500nA–4mA APD current sensing with ±5% accuracy above 1mA, and features RLIM-programmable current limiting (0.9–5.2mA), open-drain ILIM flag, and CLAMP-referenced MOUT clamping - all co-located with the 76V-capable boost stage on a single die.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	+2.8V to +5.5V - powers directly from common low-voltage rails (e.g., 3.3V LDOs) without pre-regulation.
Output Voltage Range	(VIN + 5V) to 76V - enables high-bias operation for APDs requiring >40V reverse bias in GPON/FBON modules.
Switching Frequency	400kHz (±20kHz) - enables compact RC filtering and predictable EMI profile for low-noise optical front-ends.
Current Monitor Gain	0.2× (5:1) - scales 2mA APD current to 400µA MOUT output, easing ADC interfacing while preserving dynamic range.
Peak Switch Current Limit	0.9A (typ) - protects internal 1Ω (typ) 80V MOSFET during APD transients without external current-sense resistors.
Operating Temperature	-40°C to +125°C - supports industrial and extended-temperature optical module deployments.
Shutdown Current	2µA (max) - enables ultra-low-power standby in battery-backed or energy-sensitive optical subsystems.

Pinout & Package

Package: 16-pin thermally enhanced TQFN-EP (3mm × 3mm, exposed pad), RoHS-compliant, rated for -40°C to +125°C operation.

Pin/Terminal	Circuit Role	Design Meaning
1, 16 PGND	Power Ground	Return path for input/output capacitors and LX switch; must be connected externally to SGND at single point near output capacitor.
2 IN	Input Supply	Accepts 2.8V–5.5V; requires ≥1µF ceramic bypass to PGND for stable startup and transient response.
3 SHDN	Active-Low Shutdown	Pull low or leave unconnected to disable converter; reduces supply current to ≤2µA; internally pulled low.
4, 8 SGND	Signal Ground	Analog reference for FB, CNTRL, RLIM, MOUT; connect to local ground plane and tie to PGND at one point.
5 FB	Feedback Input	Regulates output voltage to 1.23V (typ) internal reference or to VCNTRL when CNTRL < 1.2V; connects to resistive divider.
6 CNTRL	Voltage-Programmable Reference	Sets FB set-point: VCNTRL < 1.2V → VFB = VCNTRL; VCNTRL > 1.3V → VFB = 1.23V (typ); enables adjustable bias voltage.
7 ILIM	Open-Drain Current-Limit Flag	Asserts low when APD current exceeds programmed limit; drives logic-level interrupt or status indicator.
9 RLIM	Current-Limit Adjustment	Connect resistor to SGND to set APD current limit from 0.9mA to 5.2mA; default (RLIM = SGND) = 4.6mA.
10 MOUT	Current-Monitor Output	Sources 0.2×IAPD (5:1 gain); clamped by CLAMP pin; used for precision APD current measurement or closed-loop control.
11 CLAMP	MOUT Clamp Reference	Sets MOUT upper voltage limit to (VCLAMP + 0.6V); connect to BIAS or external rail; leave open if clamping not needed.
12 APD	Photodiode Cathode Drive	Provides high-impedance current source to APD cathode; referenced to BIAS potential; supports reverse-bias configurations.
13 BIAS	Bias-Voltage Input	Connects to boost output (VOUT); supplies voltage reference for current monitor and APD drive; filters ripple via optional RC network.
14, 15 LX	Switch Node	Drain of internal 80V DMOS; connects to boost inductor; requires minimal trace area to reduce EMI and ringing.
EP	Exposed Thermal Pad	Must connect to large copper plane at SGND/PGND potential for thermal dissipation; not sole ground connection.

Key Features

Feature	Design Value
Integrated 80V lateral DMOS switch	Enables 76V output without external high-voltage MOSFET; eliminates layout complexity and parasitic inductance risks.
5:1 high-side current monitor (MAX15059B)	Converts 2mA APD current into 400µA MOUT signal - compatible with standard µA-range ADC inputs and reduces noise sensitivity.
Resistor-adjustable APD current limit (1µs response)	Protects APD against optical transients using external RLIM; faster than typical analog limiter ICs and avoids system-level shutdown.
Discontinuous conduction mode (DCM) operation	Eliminates diode reverse-recovery noise and removes need for external compensation components - simplifies design validation.
Thermally enhanced 3mm × 3mm TQFN-EP	Delivers 1667mW continuous power dissipation at +70°C (θJA = 48°C/W); supports high-density optical module layouts.

Applications

Avalanche Photodiode (APD) Biasing	PIN Diode Bias Supply
Use Scenario: High-sensitivity optical receivers in GPON/FBON modules requiring stable, low-noise reverse bias for APDs. IC Role / Device Role / Timing Role: Provides regulated 40–70V bias and real-time APD current monitoring for automatic gain control (AGC). Use Value: Enables >100dB dynamic range with ±5% current monitoring accuracy and 1µs current-limit response to prevent APD damage.	Use Scenario: RF front-end switches in fiber-to-the-home (FTTH) transceivers needing precise, low-ripple DC bias for PIN diodes. IC Role / Device Role / Timing Role: Generates clean, adjustable bias voltage (e.g., 25–45V) with minimal switching noise to avoid RF interference. Use Value: Achieves <1mVP-P output ripple (with RC filter) and 0.05% load regulation - critical for maintaining RF insertion loss stability.
Low-Noise Varactor Diode Bias	GPON Optical Line Terminal (OLT)
Use Scenario: Tunable laser drivers and optical filters where varactor capacitance must be precisely controlled via DC bias. IC Role / Device Role / Timing Role: Supplies ultra-low-noise, programmable bias (e.g., 15–35V) with negligible switching artifacts affecting tuning linearity. Use Value: 400kHz fixed frequency allows deterministic RC filtering; soft-start prevents bias overshoot that could shift resonance frequency.	Use Scenario: Multi-wavelength GPON OLT cards requiring multiple independent, high-reliability APD bias rails per PON port. IC Role / Device Role / Timing Role: Delivers 200mW per channel at -40°C to +125°C with thermal shutdown and UVLO protection. Use Value: Single-chip integration reduces BOM count vs. discrete boost + monitor solutions; TQFN-EP ensures thermal reliability in dense card layouts.

Avalanche Photodiode (APD) Biasing

PIN Diode Bias Supply

Use Scenario: High-sensitivity optical receivers in GPON/FBON modules requiring stable, low-noise reverse bias for APDs.

IC Role / Device Role / Timing Role: Provides regulated 40–70V bias and real-time APD current monitoring for automatic gain control (AGC).

Use Value: Enables >100dB dynamic range with ±5% current monitoring accuracy and 1µs current-limit response to prevent APD damage.

Use Scenario: RF front-end switches in fiber-to-the-home (FTTH) transceivers needing precise, low-ripple DC bias for PIN diodes.

IC Role / Device Role / Timing Role: Generates clean, adjustable bias voltage (e.g., 25–45V) with minimal switching noise to avoid RF interference.

Use Value: Achieves <1mVP-P output ripple (with RC filter) and 0.05% load regulation - critical for maintaining RF insertion loss stability.

Low-Noise Varactor Diode Bias

GPON Optical Line Terminal (OLT)

Use Scenario: Tunable laser drivers and optical filters where varactor capacitance must be precisely controlled via DC bias.

IC Role / Device Role / Timing Role: Supplies ultra-low-noise, programmable bias (e.g., 15–35V) with negligible switching artifacts affecting tuning linearity.

Use Value: 400kHz fixed frequency allows deterministic RC filtering; soft-start prevents bias overshoot that could shift resonance frequency.

Use Scenario: Multi-wavelength GPON OLT cards requiring multiple independent, high-reliability APD bias rails per PON port.

IC Role / Device Role / Timing Role: Delivers 200mW per channel at -40°C to +125°C with thermal shutdown and UVLO protection.

Use Value: Single-chip integration reduces BOM count vs. discrete boost + monitor solutions; TQFN-EP ensures thermal reliability in dense card layouts.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage APD bias and monitoring applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MAX15059AATE+T	300mW output power, 1:1 current monitor gain, same 16-pin TQFN-EP package and temperature range.	Preferred where higher output power is required (e.g., multi-APD arrays) or full-scale current monitoring (1:1) simplifies signal chain.	Select MAX15059AATE+T when >200mW bias power or direct IAPD-to-MOUT scaling is needed; verify inductor saturation rating for higher peak currents.
LT3482EDD#TRPBF	40V max output, no integrated current monitor, 1.3MHz switching, different pinout and control interface.	Requires external current-sense amplifier and resistor network for APD monitoring; suited for lower-voltage PIN diode bias only.	Choose LT3482EDD#TRPBF only if 76V output is unnecessary and board space permits discrete monitoring circuitry; not drop-in compatible.

Compared with MAX15059AATE+T, the MAX15059BATE+T trades 100mW output power and 1:1 monitoring for tighter 5:1 gain scaling and reduced MOUT drive requirements - ideal for low-power APD channels. Versus LT3482EDD#TRPBF, it integrates monitoring and supports 76V bias but lacks higher-frequency operation.

Availability

The MAX15059BATE+T is available at Aetrix Electronics and suitable for GPON modules, FBON optical receivers, APD-based LIDAR subsystems, and industrial fiber-optic sensor designs requiring stable component supply across extended temperature ranges.

Supply support for MAX15059BATE+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) designs precision analog and mixed-signal ICs for demanding applications in communications, computing, and industrial systems.

The MAX15059 product line targets high-voltage, low-noise bias generation for optical detectors - specifically engineered to integrate boost conversion and APD current monitoring in a single TQFN package for fiber-optic transceiver modules.

FAQ

What is the maximum output voltage supported by the MAX15059BATE+T?

The MAX15059BATE+T supports an output voltage range from (VIN + 5V) up to 76V. This is enabled by its integrated 80V lateral DMOS switch and robust internal architecture. The 76V ceiling accommodates high-reverse-bias requirements of avalanche photodiodes in GPON and FBON optical receivers, and is validated across the full -40°C to +125°C operating temperature range for the MAX15059BATE+T variant.

How does the current monitor gain differ between MAX15059BATE+T and MAX15059AATE+T?

The MAX15059BATE+T provides a fixed 5:1 current monitor gain (i.e., MOUT = 0.2 × IAPD), whereas the MAX15059AATE+T uses 1:1 gain (MOUT = IAPD). This difference is inherent to the silicon variant and is confirmed in the ordering table and electrical characteristics section. The 5:1 scaling in MAX15059BATE+T reduces MOUT output current, easing interfacing with low-input-current ADCs or op-amps while preserving resolution over the 500nA–4mA APD current range.

What is the purpose of the CLAMP pin on the MAX15059BATE+T?

The CLAMP pin on the MAX15059BATE+T sets the upper voltage limit for the MOUT current-monitor output via an internal clamp diode. When CLAMP is connected to a reference voltage (e.g., BIAS or an external rail), VMOUT is limited to approximately (VCLAMP + 0.6V). This protects downstream circuitry from overvoltage during fault conditions or transient events. If clamping is not required, CLAMP may be left unconnected - a design choice explicitly documented in the MAX15059BATE+T datasheet.

Does the MAX15059BATE+T require external compensation components?

No, the MAX15059BATE+T does not require external compensation components. Its current-mode PWM controller operates in discontinuous conduction mode (DCM) and uses a direct-summing comparator architecture that eliminates the need for traditional error-amplifier compensation networks. This is confirmed in the Detailed Description section and simplifies PCB layout and design validation - particularly beneficial for high-density optical module applications where board space is constrained.

What is the guaranteed operating temperature range for the MAX15059BATE+T?

The MAX15059BATE+T is guaranteed to operate over the -40°C to +125°C temperature range. This is explicitly stated in the "Note" under Ordering Information and verified in the Absolute Maximum Ratings and Electrical Characteristics tables. The "ATE+" suffix denotes the automotive/industrial grade version, distinct from the "ETE+" variants rated for -40°C to +85°C. Thermal shutdown activates at +150°C with 15°C hysteresis, ensuring robustness across this full range.

MAX15059BATE+T Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc./Maxim Integrated

Series:: -

Package/Case:: 16-WFQFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Active

Applications:: Converter/Current Monitor, APD Bias Applications

Voltage - Input:: 2.8V ~ 5.5V

Number of Outputs:: 1

Voltage - Output:: 3.3V ~ 76V

Operating Temperature:: -40°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 16-TQFN (3x3)

MAX15059BATE+T FAQ

1.How can I place an order for MAX15059BATE+T through Aetrix?

Please submit a Request for Quotation (RFQ) for MAX15059BATE+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 MAX15059BATE+T reliable?

The price and inventory of MAX15059BATE+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX15059BATE+T is usually 5 days.

3.What payment methods are accepted for MAX15059BATE+T?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX15059BATE+T transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MAX15059BATE+T?

MAX15059BATE+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MAX15059BATE+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 MAX15059BATE+T?

For technical support, including MAX15059BATE+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX15059BATE+T requirements.

6.How does Aetrix verify that MAX15059BATE+T is sourced from the original manufacturer or authorized distributors?

All MAX15059BATE+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 MAX15059BATE+T meets industry standards.

7.What is the process for return or replacement of MAX15059BATE+T?

All MAX15059BATE+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX15059BATE+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 MAX15059BATE+T part is unused and in its original packaging.

Return procedure for MAX15059BATE+T:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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