MFG:FSC D/C:08+
MFG: FSC
D/C: 08+
Description: The SG1577 is a high-efficiency, voltage-mode, dual-channel, synchronous DC/DC PWM controller for two independent outputs. The two chan...
The SG1577 is a high-efficiency, voltage-mode, dual-channel, synchronous DC/DC PWM controller for two independent outputs. The two channels are operated out of phase. The internal reference voltage is trimmed to 0.7V?1.5%. It is connected to the error amplifier?s positive terminal for voltage feedback regulation. The soft-start circuit ensures the output voltage can be gradually and smoothly increased from zero to its final regulated value. The soft-start pin can also be used for chip-enable function. When two soft-start pins are grounded, the chip is disabled and the total operation current can be reduced to under 0.55mA. The fixed-frequency is programmable from 60kHz to 320kHz. The Over-Current Protection (OCP) level can be programmed by an external current sense resistor. It has two integrated sets of internal MOSFET drivers. SG1577 is available in 20-pin SOP and DIP packages.
| Product | Product status | Eco Status | Pricing* | Package type | Leads | Packing method | Package Drawing | Package Marking Convention** |
|---|---|---|---|---|---|---|---|---|
| SG1577SZ | Full Production | RoHS Compliant | $0.89 | SOIC-Wide | 20 | TAPE REEL | Line 1: $Y (Fairchild logo) &Z (Asm. Plant Code) &2 (2-Digit Date Code) &K Line 2: SG1577 Line 3: SZA |
| * Fairchild 1,000 piece Budgetary Pricing |
| ** A sample button will appear if the part is available through Fairchild's on-line samples program. If there is no sample button, please contact a Fairchild distributor to obtain samples |
Package marking information for product SG1577 is available. Click here for more information . |
SG1000GXH26
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