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                SGM41283

                70V Step-Up Converter with APD Current Monitor
                 
                70V Step-Up Converter with APD Current Monitor
                GENERAL DESCRIPTION

                The SGM41283 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 SGM41283 can provide up to 70V output.

                The SGM41283 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 SGM41283 features two accurate APD current monitoring outputs with 10:1 and 2:1 ratios, respectively. Resistor-adjustable current limiting protects the APD from optical power transients.

                The SGM41283 includes over-current and thermal- overload protection to prevent damage in the event of an output overload.

                The SGM41283 is available in a Green TQFN-3×3-16L package. It operates over an ambient temperature range of -40 to +125.

                PIN CONFIGURATIONS

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                FEATURES
                • Input Voltage Range: 2.7V to 5.5V

                • 72V/0.6Ω NFET with 1.1A Limit

                • Up to 70V Output Voltage

                • 50ns APD Current Monitoring Response Speed

                • 850kHz Fixed Switching Frequency

                • Internal Compensation and Soft-Start

                • High-side APD Current Monitor with Less than ±5% Tolerance

                • High-side Current Monitor Ratios:10:1 and 2:1

                • Thermal-Shutdown Protection

                • Programmable APD Over-Current Limit and Protection

                • -40 to +125 Operating Temperature Range

                • Available in a Green TQFN-3×3-16L Package

                APPLICATIONS

                APD Biasing

                PIN Diode Biasing

                Optical Receivers and Modules

                Fiber-Optic-Network Equipment

                ORDERING INFORMATION
                Part NumberStatusPackagePinsPb-FreeTemp Range
                SGM41283XTQ16G/TRProductionTDFN-3×3-16L16Y-40℃ to +125℃

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