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PT4841 Datasheet(PDF) 1 Page - Texas Instruments |
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PT4841 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 14 page For technical support and more information, see inside back cover or visit www.ti.com Features • DSL Triple Outputs (Independantly Regulated) • Input Voltage Range: 36V to 75V • 1500VDC Isolation • On/Off Control • Current Limit • Short Circuit Protection (All Outputs) Ordering Information PT4841 o = +15/+3.3/+1.5V (65W) PT4842 o = +12/+3.3/+1.8V (62W) PT Series Suffix (PT1234 x ) Case/Pin Order Package Configuration Suffix Code Vertical N (EKD) Horizontal A (EKA) SMD C (EKC) (Reference the applicable package code drawing for the dimensions and PC layout) Typical Application PT4840 Series—48V Description The PT4840 Excalibur™ power modules are a series of isolated triple- output DC/DC converters that operate from a standard (–48V) central office supply. Rated for up to 65W, these regulators are appropriate for powering both analog and mixed- signal circuitry. A typical application is a chip-set for an ADSL/DSL line card. The output voltage combinations offered by the PT4840 series provide power for a low-voltage processor core, the associated digital circuitry, and analog support circuitry. The PT4840 series incorporates many features to simplify system integration. These include a flexible On/Off control, over-temperature protection, and an input under- voltage lock-out. All outputs are current limited and short-circuit protected. In addition, the low- voltage outputs for processor core and digital circuitry meet the power- up and power-down sequencing requirements of popular DSP ICs. The PT4840 series is housed in a space-saving solderable case. The module requires no external heat sink and can occupy as little as 1.97 in2 of PCB area. Cin = Optional Cout = Optional; See specifications EN1 & EN2 pins: See On/Off Enable Logic 65-W Triple Output Isolated DC/DC Converter for DSL Applications SLTS142C - DECEMBER 2000 -REVISED SEPTEMBER 2002 DSL/ADSL IC Chip Set +V IN –V IN +15VDC +3.3VDC +1.5VDC PT4841 1 2 11 15,16 22,23 18–20 12,13 3 Vo 1 COM COM Vo 2 Vo 3 +V IN –V IN EN 1 Vo 2adj Vo 3adj 17 21 Vo 2 Adjust Vo 3 Adjust C OUT1 C OUT3 C OUT2 C IN 4 EN 2 • Fixed Frequency Operation • Over-Temperature Shutdown • Under-Voltage Lockout • Space Saving Package: 1.9 sq. in. PCB Area (suffix N) • Solderable Copper Case • Safety Approvals: UL60950 CSA 22.2 950 VDE EN60950 |
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