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UC1843A-SP 数据表(PDF) 3 Page - Texas Instruments |
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UC1843A-SP 数据表(HTML) 3 Page - Texas Instruments |
3 / 31 page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 V FB N/C I SENSE N/C N/C Output N/C V C V CC N/C 1 2 3 4 5 6 7 8 Gnd Output V CC V REF R /C T T I SENSE V FB Comp UC1842A-SP, UC1843A-SP, UC1844A-SP www.ti.com SLUS872D – JANUARY 2009 – REVISED MAY 2015 6 Device Comparison Table PART NO. UVLO ON UVLO OFF MAXIMUM DUTY CYCLE UC1842A 16 V 10 V <100% UC1843A 8.5 V 7.9 V <100% UC1844A 16 V 10 V <50% 7 Pin Configuration and Functions JG Package FK Package 8-Pin CDIP 20-Pin LCCC Top View Top View Pin Functions PIN I/O DESCRIPTION NAME CDIP LCCC Comp 1 2 I Error amplifier output VFB 2 5 I Voltage feedback input to error amplifier ISENSE(C/S) 3 7 I Current sense comparator input pin RT/CT 4 10 I RC time constant input to oscillator 1, 3, 4, 6, 8, 9, NC — — No connect 11, 14, 16, 19 Pwr Gnd — 12 — Output section ground Gnd 5 13 — Ground Output 6 15 O Regulated output VC — 17 — Output section supply voltage VCC 7 18 — Unregulated supply voltage VREF 8 20 O 5-V internally generated reference Copyright © 2009–2015, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Links: UC1842A-SP UC1843A-SP UC1844A-SP |
类似零件编号 - UC1843A-SP |
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类似说明 - UC1843A-SP |
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