Rainbow-electronics MAX15031 Bedienungsanleitung PDF herunterladen

General 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 cur-

rent ranging from 500nA to 2mA 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 limit-

ing 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.

Applications

Avalanche Photodiode Biasing and Monitoring

PIN Diode Bias Supplies

Low-Noise Varactor Diode Bias Supplies

FBON Modules

GPON Modules

LCD Displays

Features

o Input Voltage Range

+2.7V to +5.5V (Using Internal Charge Pump) or

+5.5V to +11V

o Wide Output-Voltage Range from (V

+ 1V) to 76V

o Internal 1Ω (typ) 80V Switch

o 300mW Boost Converter Output Power

o Accurate ±10% (500nA to 1mA) and ±3.5% (1mA

to 4mA) High-Side Current Monitor

o Resistor-Adjustable Ultra-Fast APD Current Limit

(1µs Response Time)

o Open-Drain Current-Limit Indicator Flag

o 400kHz Fixed Switching Frequency

o Constant PWM Frequency Provides Easy Filtering

in Low-Noise Applications

o Internal Soft-Start

o 2µA (max) Shutdown Current

o -40°C to +125°C Temperature Range

o Small Thermally Enhanced, 4mm x 4mm, 16-Pin

TQFN Package

MAX15031

80V, 300mW Boost Converter and Current

Monitor for APD Bias Applications

________________________________________________________________

Maxim Integrated Products

PWR

CLAMP

RLIM

APD

SHDN

12 11 9

PGND

ILIM

CNTRL

SGND

CN MOUT

BIAS

THIN QFN

(4mm

× 4mm)

TOP VIEW

MAX15031

*EP

*EXPOSED PAD

Pin Configuration

Ordering Information

19-4299; Rev 1; 3/09

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

EVALUATION KIT

AVAILABLE

PART TEMP RANGE

PIN-PACKAGE

MAX15031ATE+

-40°C to +125°C 16 TQFN-EP*

Denotes a lead(Pb)-free/RoHS-compliant package.

EP = Exposed pad.

Typical Operating Circuits appear at end of data sheet.

1 2 3 4 5 6 ... 16 17

MAX15031 1

Inhaltsverzeichnis

Seite 1 - MAX15031

General DescriptionThe MAX15031 consists of a constant-frequency pulse-width modulating (PWM) step-up DC-DC converter withan internal switch and a hig

Seite 2

MAX1503180V, 300mW Boost Converter and CurrentMonitor for APD Bias Applications10 ____________________________________________________________________

Seite 3

MAX15031The MAX15031 includes a versatile current monitorintended for monitoring the APD, PIN, or varactor diodeDC current in fiber and other applicat

Seite 4

MAX1503180V, 300mW Boost Converter and CurrentMonitor for APD Bias Applications12 ____________________________________________________________________

Seite 5

MAX15031Diode SelectionThe MAX15031’s high switching frequency demands ahigh-speed rectifier. Schottky diodes are recommend-ed for most applications b

Seite 6

MAX1503180V, 300mW Boost Converter and CurrentMonitor for APD Bias Applications14 ____________________________________________________________________

Seite 7

MAX15031MAX15031CNTRLCPCNINPGNDFBBIASSHDNMOUTAPDSGNDRLIMPWRLXGPIOILIMGPIOCLAMPVDDµCVDDAPDCIN1µFCCP10nFRMOUT10kΩCOUT0.1µFCMOUT(OPTIONAL)R16.34kΩRLIM2.8

Seite 8

MAX1503180V, 300mW Boost Converter and CurrentMonitor for APD Bias Applications16 ____________________________________________________________________

Seite 9

MAX1503180V, 300mW Boost Converter and CurrentMonitor for APD Bias ApplicationsMaxim cannot assume responsibility for use of any circuitry other than

Seite 10

MAX1503180V, 300mW Boost Converter and CurrentMonitor for APD Bias Applications2 _____________________________________________________________________

Seite 11

MAX1503180V, 300mW Boost Converter and CurrentMonitor for APD Bias Applications_______________________________________________________________________

Seite 12

MAX1503180V, 300mW Boost Converter and CurrentMonitor for APD Bias Applications4 _____________________________________________________________________

Seite 13

LIGHT-LOAD SWITCHINGWAVEFORM WITH RC FILTERMAX15031 toc091µs/divVBIASAC-COUPLEDVLX50V/divIL500mA/div1mV/div0mA0VIOUT = 0.1mA, VBIAS = 70VMAX1503180V,

Seite 14

MAX1503180V, 300mW Boost Converter and CurrentMonitor for APD Bias Applications6 _____________________________________________________________________

Seite 15

MAX1503180V, 300mW Boost Converter and CurrentMonitor for APD Bias Applications_______________________________________________________________________

Seite 16

MAX1503180V, 300mW Boost Converter and CurrentMonitor for APD Bias Applications8 _____________________________________________________________________

Seite 17

MAX1503180V, 300mW Boost Converter and CurrentMonitor for APD Bias Applications_______________________________________________________________________

Kommentare zu diesen Handbüchern

Keine Kommentare

Rainbow-electronics MAX15031 Bedienungsanleitung

Stöbern Sie online oder laden Sie Bedienungsanleitung nach Sensoren Rainbow-electronics MAX15031 herunter. Rainbow Electronics MAX15031 User Manual Benutzerhandbuch

Inhaltsverzeichnis

Kommentare zu diesen Handbüchern

Verwandte Produkte und Handbücher für Sensoren Rainbow-electronics MAX15031