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℃.
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
APD Biasing
PIN Diode Biasing
Optical Receivers and Modules
Fiber-Optic-Network Equipment
| Part Number | Status | Package | Pins | Pb-Free | Temp Range |
| SGM41283XTQ16G/TR | Production | TDFN-3×3-16L | 16 | Y | -40℃ to +125℃ |
