Datasheet LT1618 (Analog Devices) - 9
| Manufacturer | Analog Devices |
| Description | Constant-Current/Constant-Voltage 1.4MHz Step-Up DC/DC Converter |
| Pages / Page | 16 / 9 — TYPICAL APPLICATIO S. 4.5W Direct Broadcast Satellite (DBS) Power Supply … |
| File Format / Size | PDF / 215 Kb |
| Document Language | English |
TYPICAL APPLICATIO S. 4.5W Direct Broadcast Satellite (DBS) Power Supply with Short-Circuit Protection. Efficiency
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LT1618
U TYPICAL APPLICATIO S 4.5W Direct Broadcast Satellite (DBS) Power Supply with Short-Circuit Protection
L1 C2 L3 33µH 1µF D1 2.2µH V 0.068Ω IN 12V R3 2 7 D2 L2 10k Q1 MURS110 ISN SW 33µH 3 R1 FMMT717 ISP 100k ZETEX 13.5V/18.5V LT1618 1 8 C3 C4 VIN FB 3.3µF 3.3µF 9 SHDN R5 R2 22kHz Q1 ADD 5V 24.9k 10k NETWORK I MMBT3904 ADJ GND VC 3.3V TUNING 4 5 10 RHCP LHCP C1 RC 0V R4 4.7µF 2k 1k CC 33nF C1: TAIYO YUDEN EMK316BJ475 (408) 573-4150 1618 TA02a C2: TAIYO YUDEN TMK316BJ105 (408) 573-4150 C3, C4: TAIYO YUDEN TMK325BJ335 (408) 573-4150 D1: ON SEMICONDUCTOR MBRM140 (800) 282-9855 L1, L2: SUMIDA CR54-330 (847) 956-0666 L3: SUMIDA CR43-2R2 (847) 956-0666
Efficiency
80 75 70 EFFICIENCY (%) 65 60 0 50 100 150 200 250 300 LOAD CURRENT (mA) 1618 TA02b sn1618 1618fas 9
U TYPICAL APPLICATIO S 4.5W Direct Broadcast Satellite (DBS) Power Supply with Short-Circuit Protection
L1 C2 L3 33µH 1µF D1 2.2µH V 0.068Ω IN 12V R3 2 7 D2 L2 10k Q1 MURS110 ISN SW 33µH 3 R1 FMMT717 ISP 100k ZETEX 13.5V/18.5V LT1618 1 8 C3 C4 VIN FB 3.3µF 3.3µF 9 SHDN R5 R2 22kHz Q1 ADD 5V 24.9k 10k NETWORK I MMBT3904 ADJ GND VC 3.3V TUNING 4 5 10 RHCP LHCP C1 RC 0V R4 4.7µF 2k 1k CC 33nF C1: TAIYO YUDEN EMK316BJ475 (408) 573-4150 1618 TA02a C2: TAIYO YUDEN TMK316BJ105 (408) 573-4150 C3, C4: TAIYO YUDEN TMK325BJ335 (408) 573-4150 D1: ON SEMICONDUCTOR MBRM140 (800) 282-9855 L1, L2: SUMIDA CR54-330 (847) 956-0666 L3: SUMIDA CR43-2R2 (847) 956-0666
Efficiency
80 75 70 EFFICIENCY (%) 65 60 0 50 100 150 200 250 300 LOAD CURRENT (mA) 1618 TA02b sn1618 1618fas 9
