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PT4832 Datasheet(PDF) 1 Page - Texas Instruments |
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PT4832 Datasheet(HTML) 1 Page - Texas Instruments |
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1 / 34 page  For technical support and more information, see inside back cover or visit www.ti.com 1 SLTS165E - FEBRUARY 2002 - REVISED MARCH 2003 Features • Triple Outputs (Independently Regulated) • Input Voltage Range: 36V to 75V, 80V Surge • 1500VDC Isolation • Dual Logic On/Off Control • Short-Circuit Protection (All Outputs) • Fixed Frequency Operation Ordering Information PT4821 o = +3.3/+2.5/+1.5V PT4822 o = +3.3/+1.8/+1.5V PT4823 o = +3.3/+2.5/+1.2V PT4824 o = +3.3/+1.8/+1.2V PT4825 o = +3.3/+1.5/+1.2V PT4826 o = +5.0/+3.3/+1.8V PT4827 o = +3.3/+2.5/+1.8V PT4828 o = +5.0/+2.5/+1.5V PT4829 o = +5.0/+1.8/+1.5V PT4831 o = +5.0/+3.3/+1.5V PT4832 o = +5.0/+3.3/+2.5V * PT4833 o = +3.3/+2.0/+1.5V * The PT4833 is not included in the VDE safety certification. PT Series Suffix (PT1234 x ) Case/Pin Order Package Configuration Suffix Code Vertical N (ENM) Horizontal A (ENN) SMD C (ENP) (Reference the applicable package code drawing for the dimensions and PC layout) Typical Application PT4820 Series Description The PT4820 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 35W, these regulators are ideal for powering many mixed logic appli- cations. The triple-output voltage combination allows for a compact multiple-output power supply in a single low-profile DC/DC module. The available output voltage options include a low-voltage power bus for a DSP or ASIC core, and two additional standard logic supply voltages. The PT4820 series incorporates many features to simplify system integration. These include a flexible On/Off enable control, an input under-voltage lock-out, and over- temperature protection. All outputs have short-circuit protection and are internally sequenced to meet the power-up and power-down require- ments of popular DSP ICs. The PT4820 series is housed in a space-saving solderable case. The module requires no external heat sink and can occupy as little as 1.3 in2 of PCB area. Cin = Optional Co1, Co2, Co3 = Optional; See specifications EN1 & EN2 pins: See On/Off Enable Logic 35-W Triple Output Isolated DC/DC Converter for Logic Applications C IN + Co 3 + Co 2 + Co 1 + DSL, DSP, or ASIC Chipset I/O Logic Core +V IN –V IN 18 PT4820 EN 2 EN 1 +Vo 1 +Vo 2 +Vo 3 COM V 1 Adj V 2 Adj V 3 Adj COM +V IN –V IN 12,13 11 16,17 15 20,21 19 9,10 3 1 2 4 COM 14 • Over-Temperature Shutdown • Under-Voltage Lockout • Space Saving Package: 1.3 sq. in. PCB Area (suffix N) • Solderable Copper Case • Safety Approvals: UL60950 CSA 22.2 950 VDE EN60950 |
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