MAX1932

Digitally Controlled, 0.5% Accurate, Safest APD Bias Supply


Please check latest availability status for a specific part variant.

Description

The MAX1932 generates a low-noise, high-voltage output to bias avalanche photodiodes (APDs) in optical receivers. Very low output ripple and noise is achieved by a constant-frequency, pulse-width modulated (PWM) boost topology combined with a unique architecture that maintains regulation with an optional RC or LC post filter inside its feedback loop. A precision reference and error amplifier maintain 0.5% output voltage accuracy.

The MAX1932 protects expensive APDs against adverse operating conditions while providing optimal bias. Traditional boost converters measure switch current for protection, whereas the MAX1932 integrates accurate high-side current limiting to protect APDs under avalanche conditions. A current-limit flag allows easy calibration of the APD operating point by indicating the precise point of avalanche breakdown. The MAX1932 control scheme prevents output overshoot and undershoot to provide safe APD operation without data loss.

The output voltage can be accurately set with either external resistors, an internal 8-bit DAC, an external DAC, or other voltage source. Output span and offset are independently settable with external resistors. This optimizes the utilization of DAC resolution for applications that may require limited output voltage range, such as 4.5V to 15V, 4.5V to 45V, 20V to 60V, or 40V to 90V.
MAX1932: Typical Application Circuit MAX1932: Typical Application Circuit Enlarge+

Key Features

  • Unique Architecture Delivers Excellent Accuracy for Improved System Performance
    • 0.5% Accurate Output
    • Low Ripple Output (< 1mV)
  • Protection Features Guarantee Safe Operation
    • Accurate High-Side Current Limit
    • Avalanche Indicator Flag
  • Output-Voltage Flexibility Facilitates Multiple Applications and Design Approaches
    • 4.5V to 90V Output
    • Set Output Voltage via 8-Bit SPI-Compatible Internal DAC, External DAC, or External Resistors
  • Small Circuit Footprint Reduces Equipment Size
    • 12-Pin, 4mm x 4mm Thin QFN Package
    • Circuit Height < 2mm
  • Commonly Available 2.7V to 5.5V Input Voltage Range

Applications/Uses

  • Fiber Optic Network Equipment
  • Laser Range Finders
  • Optical Receivers and Modules
  • PIN Diode Bias Supply
  • Telecom Equipment
Part NumberVIN
(V)
VIN
(V)
VOUT1
(V)
VOUT1
(V)
IOUT1
(A)
Output Adjust. MethodSwitch TypeICC
(mA)
Shutdown Mode Supply Current
(µA)
Shutdown Mode Supply Current
(µA)
DC-DC OutputsOper. Freq.
(kHz)
Package/PinsBudgetary
Price
minmaxminmaxtyptypmaxSee Notes
MAX1932 2.75.54.5900.01
Digital
Resistor
Voltage
External0.525651300
TQFN/12
$5.25 @1k
See All Step-Up Switching Regulators (98)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

Quality Management System >
Environmental Management System >

Related Resources


MAX38640B
Tiny 1.8V–5.5V Input, 330nA IQ, 700mA nanoPower Buck Converter

  • Extends Battery Life
  • Easy to Use – Addresses Popular Operation
  • Protects System in Multiple Use Cases

MAX38641A
Tiny 1.8V–5.5V Input, 330nA IQ, 700mA nanoPower Buck Converter

  • Extends Battery Life
  • Easy to Use – Addresses Popular Operation
  • Protects System in Multiple Use Cases

MAX38641B
Tiny 1.8V–5.5V Input, 330nA IQ, 700mA nanoPower Buck Converter

  • Extends Battery Life
  • Easy to Use – Addresses Popular Operation
  • Protects System in Multiple Use Cases

MAX38642A
Tiny 1.8V–5.5V Input, 330nA IQ, 700mA nanoPower Buck Converter

  • Extends Battery Life
  • Easy to Use – Addresses Popular Operation
  • Protects System in Multiple Use Cases

MAX38642B
Tiny 1.8V–5.5V Input, 330nA IQ, 700mA nanoPower Buck Converter

  • Extends Battery Life
  • Easy to Use – Addresses Popular Operation
  • Protects System in Multiple Use Cases

MAX38643A
Tiny 1.8V–5.5V Input, 330nA IQ, 700mA nanoPower Buck Converter

  • Extends Battery Life
  • Easy to Use – Addresses Popular Operation
  • Protects System in Multiple Use Cases

MAX38643B
Tiny 1.8V–5.5V Input, 330nA IQ, 700mA nanoPower Buck Converter

  • Extends Battery Life
  • Easy to Use – Addresses Popular Operation
  • Protects System in Multiple Use Cases

MAX38640A
Tiny 1.8V–5.5V Input, 330nA IQ, 700mA nanoPower Buck Converter

  • Extends Battery Life
  • Easy to Use – Addresses Popular Operation
  • Protects System in Multiple Use Cases

MAX38903A
1.7V—5.5VIN, 1A Low Noise LDO Linear Regulators in TDFN and WLP

  • 1.7V to 5.5V Input Voltage Range
  • 0.6V to 5.3V Programmable Output Voltage
  • 7µVRMS Output Noise, 10Hz to 100kHz

MAX38903B
1.7V—5.5VIN, 1A Low Noise LDO Linear Regulators in TDFN and WLP

  • 1.7V to 5.5V Input Voltage Range
  • 0.6V to 5.3V Programmable Output Voltage
  • 7µVRMS Output Noise, 10Hz to 100kHz

MAX38903C
1.7V—5.5VIN, 1A Low Noise LDO Linear Regulators in TDFN and WLP

  • 1.7V to 5.5V Input Voltage Range
  • 0.6V to 5.3V Programmable Output Voltage
  • 7µVRMS Output Noise, 10Hz to 100kHz

MAX38903D
1.7V—5.5VIN, 1A Low Noise LDO Linear Regulators in TDFN and WLP

  • 1.7V to 5.5V Input Voltage Range
  • 0.6V to 5.3V Programmable Output Voltage
  • 7µVRMS Output Noise, 10Hz to 100kHz

MAX20004
36V, 220kHz to 2.2MHz, 4A/6A/8A Fully Integrated Step-Down Converters

  • Multiple Functions for Small Size
  • High Precision
  • Robust for the Automotive Environment

MAX20006
36V, 220kHz to 2.2MHz, 4A/6A/8A Fully Integrated Step-Down Converters

  • Multiple Functions for Small Size
  • High Precision
  • Robust for the Automotive Environment

MAX20008
36V, 220kHz to 2.2MHz, 4A/6A/8A Fully Integrated Step-Down Converters

  • Multiple Functions for Small Size
  • High Precision
  • Robust for the Automotive Environment

MAX20077EVKIT
Evaluation Kit for the MAX20077

  • 3.5V to 36V Input Supply Range
  • 5V or 3.3V Fixed Output Voltage, or Adjustable Between 1V and 10V
  • Delivers Up to 2.5A Output Current

MAX20077
36V, 2.5A Mini Buck Converter with 3.5uA IQ

  • Synchronous DC-DC Converter with Integrated FETs
  • Small Solution Size Saves Space
  • PGOOD Output and High-Voltage EN Input Simplify Power Sequencing

MAX25277
36V, 2.5A Mini Buck Converter with 3.5uA IQ

  • Synchronous DC-DC Converter with Integrated FETs
  • Small Solution Size Saves Space
  • PGOOD Output and High-Voltage EN Input Simplify Power Sequencing

MAX77503
14V Input, 1.5A High-Efficiency Buck Converter with 9μA IQ

  • 1.5A Single Channel Buck Regulator
  • 3V to 14V Input Voltage Range
  • 0.8V to 99%VSUP Output Voltage Range

MAX17270
nanoPower Triple/Dual-Output, Single-Inductor, Multiple-Output (SIMO) Buck-Boost Regulator

  • 3-Output/2-Output, Single-Inductor, Multiple-Output (SIMO) Buck-Boost Regulator
  • 2.7V to 5.5V Input Voltage Range
  • Low-Power and Long Battery Life

MAX17271
nanoPower Triple/Dual-Output, Single-Inductor, Multiple-Output (SIMO) Buck-Boost Regulator

  • 3-Output/2-Output, Single-Inductor, Multiple-Output (SIMO) Buck-Boost Regulator
  • 2.7V to 5.5V Input Voltage Range
  • Low-Power and Long Battery Life

MAXM17900
4V to 24V, 100mA, Compact Step-Down Power Module

  • Easy to Use
  • High Efficiency
  • Flexible Design

MAXM17552
4V to 60V, 100mA, Compact Step-Down Power Module

  • Easy to Use
  • High Efficiency
  • Flexible Design

MAX38888
2.5V–5.0V, 0.5A/2.5A Reversible Buck/Boost Regulator for Backup Power Applications

  • 2.5V to 5V System Output Voltage
  • 0.8V to 4.5V Cap Voltage Range
  • Up to 2.5A Peak Inductor Discharge Current

MAX17250
2.7V to 18V Input, Boost Converter with 0.1uA True Shutdown, Short Circuit Protection and Selectable Input Current Limit

  • Input Voltage Range 2.7V to 18V
  • Output Voltage Range 3V to 18V, > VIN
  • Integrated Power FETs

MAX17672
Integrated 4V-60V, 150mA, High-Efficiency, Synchronous Step-Down DC-DC Converter with 50mA Linear Regulator

  • Reduces External Components and Total Cost
  • Reduces Number of DC-DC Regulators to Stock
  • Reduces Power Dissipation

MAX17670
Integrated 4V-60V, 150mA, High-Efficiency, Synchronous Step-Down DC-DC Converter with 50mA Linear Regulator

  • Reduces External Components and Total Cost
  • Reduces Number of DC-DC Regulators to Stock
  • Reduces Power Dissipation

MAX17671
Integrated 4V-60V, 150mA, High-Efficiency, Synchronous Step-Down DC-DC Converter with 50mA Linear Regulator

  • Reduces External Components and Total Cost
  • Reduces Number of DC-DC Regulators to Stock
  • Reduces Power Dissipation

MAX20098
Versatile 36V 2.2MHz Buck Controller with 3.5µA IQ

  • Meets Stringent OEM Module Power Consumption and Performance Specifications
  • Enables Crank-Ready Designs
  • EMI Reduction Features Reduce Interference with Sensitive Radio Bands without Sacrificing Wide Input Voltage Range

MAX17633
4.5V to 36V, 3.5A, High-Efficiency, Synchronous Step-Down DC-DC Converter

  • Reduces External Components and Total Cost
  • Reduces Number of DC-DC Regulators to Stock
  • Reduces Power Dissipation

MAXM17903
4.5V to 24V, 300mA Compact Step-Down Power Module

  • Easy to use
  • High Efficiency
  • Flexible Design

MAXM15064
4.5V to 60V, 300mA Compact Step-Down Power Module

  • Easy to use
  • High Efficiency
  • Flexible Design

MAX77680
3-Output SIMO Buck-Boost Regulator with Power Sequencer and 3μA IQ

  • Single-Inductor, Multiple-Output (SIMO) Extends Battery Life
  • Compact, High-Efficiency Power Solution
  • Small Size

MAX77681
3-Output SIMO Buck-Boost Regulator with Power Sequencer and 3μA IQ

  • Single-Inductor, Multiple-Output (SIMO) Extends Battery Life
  • Compact, High-Efficiency Power Solution
  • Small Size

MAX20416
2.2MHz Dual-Output, Low-Voltage Step-Down Converters

  • Multiple Functions for Small Size
  • High Precision
  • Robust for the Automotive Environment

MAX77278
Ultra-Low Power PMIC with 3-Output SIMO, Power Path Charger Optimized for Small Li+, 425mA Current Sink, and 8 GPIOs

  • Highly Integrated
  • Low Power
  • Charger Optimized for Small Battery Size

MAX20471
Low-Voltage Synchronous Boost Converter

  • Synchronous Boost Converter
  • 3.0V to 4.0V Operating Supply Voltage
  • True Output Shutdown
  • High Precision
    • ±1.5% Output-Voltage Accuracy
    • 93V ±2% Undervoltage Monitoring
    • 107V ±2% Overvoltage Monitoring
  • Robust for the Automotive Environment
    • Current-Mode Control, Forced-PWM, and Skip Operation
    • Overtemperature and Overcurrent Protection
    • 12-Pin (3mm × 3mm) TDFN

  • MAX20472
    Low-Voltage Synchronous Boost Converter

    • Synchronous Boost Converter
    • 3.0V to 4.0V Operating Supply Voltage
    • True Output Shutdown
  • High Precision
    • ±1.5% Output-Voltage Accuracy
    • 93V ±2% Undervoltage Monitoring
    • 107V ±2% Overvoltage Monitoring
  • Robust for the Automotive Environment
    • Current-Mode Control, Forced-PWM, and Skip Operation
    • Overtemperature and Overcurrent Protection
    • 12-Pin (3mm × 3mm) TDFN

  • MAX20473
    Low-Voltage Synchronous Boost Converter

    • Synchronous Boost Converter
    • 3.0V to 4.0V Operating Supply Voltage
    • True Output Shutdown
  • High Precision
    • ±1.5% Output-Voltage Accuracy
    • 93V ±2% Undervoltage Monitoring
    • 107V ±2% Overvoltage Monitoring
  • Robust for the Automotive Environment
    • Current-Mode Control, Forced-PWM, and Skip Operation
    • Overtemperature and Overcurrent Protection
    • 12-Pin (3mm × 3mm) TDFN

  • Type ID Title
    Reference Circuit3926HFRD-22.3: Modular GPON (MOGPON) ONT
    Evaluation Board3690MAX1932EVKIT MAX1932 Evaluation Kit