SG6848DZ

Product Summary

The SG6848DZ is a highly-integrated PWM controller provides several special enhancements designed to meet the low standby-power needs of low-power SMPS. To minimize standby power consumption, the proprietary green-mode function provides off-time modulation to linearly decrease the switching frequency under light-load conditions. This green-mode function enables the power supply to easily meet even the strictest power conservation requirements. The applications of the SG6848DZ include Battery chargers for cellular phones, cordless phones, PDAs, digital cameras, and power tools, Power adapters for ink jet printers, video game consoles, and portable audio players, Open-frame SMPS for TV/DVD standby and other auxiliary supplies, home appliances, and consumer electronics, Replacements for linear transformers and RCC SMPS, PC 5V standby power.

Parametrics

SG6848DZ absolute maximum ratings: (1)VDD, DC Supply Voltage: 25V; Zener Clamp: 26V; Zener Current: 10mA; (2)VFB, Input Voltage to FB Pin: -0.3 to 6 V V; (3)VSense, Input Voltage to Sense Pin: -0.3 to 6V V; (4)Pd, Power Dissipation: 300 mW; (5)TJ, Operating Junction Temperature: 150 ℃; (6)RθJA, Thermal Resistance (Junction to Air), SOT-26: 208.4℃/W; DIP-8: 82.5℃/W; (7)Tstg, Storage Temperature Range: -55 to +150 ℃; (8)TL, Lead Temperature (Soldering), 20 sec SOT-26: 220℃; 10 sec DIP-8: 260℃; (9)ESD Capability, HBM Model: 3.0 kV; (10)ESD Capability, Model: 300 V.

Features

SG6848DZ features: (1)Green-Mode PWM; (2)Supports the “Blue Angel” Standard; (3)Low Start-up Current (5uA); (4)Low Operating Current (2mA); (5)Leading-Edge Blanking; (6)Constant Output Power Limit; (7)Universal Input; (8)Built-in Synchronized Slope Compensation; (9)Current Mode Operation; (10)Cycle-by-cycle Current Limiting; (11)Under Voltage Lockout (UVLO); (12)Programmable PWM Frequency; (13)Gate Output Voltage Clamped at 15V; (14)Low Cost; (15)Few External Components Required; (16)Small SOT-26 Package.

Diagrams