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MAX15031
80V, 300mW Boost Converter and Current Monitor for APD Bias Applications
Integrated, High-Voltage Boost Converter and Current Monitor Reduce Cost and Board Space for APD Applications
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Status
All versions are Not Recommended for New Designs. See Ordering Information for recommended replacements.
Description
The MAX15031 consists of a constant-frequency pulse-width modulating (PWM) step-up DC-DC converter with an internal switch and a high-side current monitor with high-speed adjustable current limiting. This device can generate output voltages up to 76V and provides current monitoring up to 4mA (up to 300mW). The MAX15031 can be used for a wide variety of applications such as avalanche photodiode biasing, PIN biasing, or varactor biasing, and LCD displays. The MAX15031 operates from 2.7V to 11V.
The constant-frequency (400kHz), current-mode PWM architecture provides low-noise output voltage that is easy to filter. A high-voltage, internal power switch allows this device to boost output voltages up to 76V. Internal soft-start circuitry limits the input current when the boost converter starts. The MAX15031 features a shutdown mode to save power.
The MAX15031 includes a current monitor with more than three decades of dynamic range and monitors current ranging from 500nA to 4mA with high accuracy. Resistor-adjustable current limiting protects the APD from optical power transients. A clamp diode protects the monitor's output from overvoltage conditions. Other protection features include cycle-by-cycle current limiting of the boost converter switch, undervoltage lockout, and thermal shutdown if the die temperature reaches +160°C.
The MAX15031 is available in a thermally enhanced 4mm x 4mm, 16-pin TQFN package and operates over the -40°C to +125°C automotive temperature range.
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Data Sheet
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Key Features
- Input Voltage Range
- +2.7V to +5.5V (Using Internal Charge Pump) or
- +5.5V to +11V
- Wide Output-Voltage Range from (VIN + 1V) to 76V
- Internal 1Ω (typ) 80V Switch
- 300mW Boost Converter Output Power
- Accurate ±10% (500nA to 1mA) and ±3.5% (1mA to 4mA) High-Side Current Monitor
- Resistor-Adjustable Ultra-Fast APD Current Limit (1µs Response Time)
- Open-Drain Current-Limit Indicator Flag
- 400kHz Fixed Switching Frequency
- Constant PWM Frequency Provides Easy Filtering in Low-Noise Applications
- Internal Soft-Start
- 2µA (max) Shutdown Current
- -40°C to +125°C Temperature Range
- Small Thermally Enhanced, 4mm x 4mm, 16-Pin TQFN Package
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Applications/Uses
- Avalanche Photodiode Biasing and Monitoring
- FBON Modules
- GPON Modules
- LCD Displays
- Low-Noise Varactor Diode Bias Supplies
- PIN Diode Bias Supplies
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Diagram
Typical Operating Circuits
Application Notes
Product Guides
Reliability Reports
Software/Models
Ordering Information
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Part Number
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Free
Sample |
Buy |
Status
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Recommended Replacement |
Package:
TYPE PINS FOOTPRINT
DRAWING CODE/VAR *
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Temp |
RoHS/Lead-Free?
Materials Analysis
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| MAX15031ATE+
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NRND |
MAX15059
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TQFN;16 pin;16.8 mm²
Outline Drawing:21-0139 (PDF)
Land Pattern: 90-0070 (PDF)
Use pkgcode/variation: T1644+4*
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-40°C to +125°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX15031ATE+T
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NRND |
MAX15059
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TQFN;16 pin;16.8 mm²
Outline Drawing:21-0139 (PDF)
Land Pattern: 90-0070 (PDF)
Use pkgcode/variation: T1644+4*
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-40°C to +125°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
Notes:
- Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
- Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
- Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
- * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.
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Information Index
Document Ref.: 19-4299
Rev 2;
2009-08-04
This page last modified: 2009-08-04
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