MP3430 Datasheet, PDF (1/15 Pages) Monolithic Power Systems – 90V Step-Up Converter with APD Current Monitor

The Future of Analog IC Technology
DESCRIPTION
The MP3430 is a monolithic step-up converter
that integrates a power switch and a biased
avalanche photodiode (APD) current monitor.
The device can double the output voltage
through the APD optical receivers. The MP3430
can provide up to 90V output.
The MP3430 uses a current-mode, fixed-
frequency architecture to regulate the output
voltage, which provides a fast transient
response and cycle-by-cycle current limiting.
The MP3430 features two accurate APD
current monitoring outputs with 1:10 and 1:2
ratios, respectively. Resistor-adjustable current
limiting protects the APD from optical power
transients.
The MP3430 includes over-current and thermal-
overload protection to prevent damage in the
event of an output overload.
The MP3430 is available in a small 3mm×3mm
QFN16 package.
TYPICAL APPLICATION
MP3430
90V Step-Up Converter
with APD Current Monitor
FEATURES
 2.7V-to-5.5V Input Voltage
 100V/1Ω NFET with 0.9A Limit
 Up to 90V Output Voltage
 50ns APD Current Monitoring Response
Speed
 1.3MHz Fixed Switching Frequency
 Internal Compensation and Soft-Start
 High-Side APD Current Monitor with less
than ±5% Tolerance.
 1:10 and 1:2 Ratio Outputs for APD Current
Monitoring
 Thermal-Shutdown Protection
 Programmable APD Over-Current Limit and
Protection
 3×3mm QFN16 Package
APPLICATIONS
 APD Biasing
 PIN Diode Biasing
 Optical Receivers and Modules
 Fiber-Optic–Network Equipment
All MPS parts are lead-free and adhere to the RoHS directive. For MPS green
status, please visit MPS website under Products, Quality Assurance page.
“MPS” and “The Future of Analog IC Technology” are registered trademarks of
Monolithic Power Systems, Inc.
MP3430 Rev 1.11
www.MonolithicPower.com
1
4/25/2013
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