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Fairchild FPF2302 manual

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Table of contents for the manual

  • Page 1

    FPF2300/02/03 — Dual-Out put Current Limit Switch June 2009 © 2009 Fairchild Semicond uctor Corporation www.fairchildsemi.com FPF2300/02/03 • Rev . 1.1.3 FPF2300/02/03 Dual-Output Current Limit Switch Features ! 1.8 to 5.5V Input V oltage Range ! T ypical R ON = 75m Ω at IN = 5.5V ! 1.3A Current Limit (T ypica l) ! Slew Rate C ontrolled ! Rev[...]

  • Page 2

    FPF2300/02/03 — Dual-Out put Current Limit Switch © 2009 Fairchild Semicond uctor Corporation www.fairchildsemi.com FPF2300/02/03 • Rev . 1.1.3 2 Application Circuit Figure 3. T y pical Application Functional Block Diagram Figure 4. Block Diagram ON OFF ONA IN GND FPF2300/2/3 FLAGB(B) OUT A TO LOAD A FLAGB(A) ON OFF ONB OUTB TO L OA D B C IN C[...]

  • Page 3

    FPF2300/02/03 — Dual-Out put Current Limit Switch © 2009 Fairchild Semicond uctor Corporation www.fairchildsemi.com FPF2300/02/03 • Rev . 1.1.3 3 Pin Configuration Figure 5. Pin Configurations Pin Description Pin # Name Function 1 GND Ground 2 IN Supply Input: Input to the power swit ch and the supply voltage for the IC. 3 ONA ON / OFF control[...]

  • Page 4

    FPF2300/02/03 — Dual-Out put Current Limit Switch © 2009 Fairchild Semicond uctor Corporation www.fairchildsemi.com FPF2300/02/03 • Rev . 1.1.3 4 Absolute Maximum Ratings S tresses exceeding the absolute maximum ratings may damage the device. The device may not function or be opera- ble above the recommended operating conditions and stre ssing[...]

  • Page 5

    FPF2300/02/03 — Dual-Out put Current Limit Switch © 2009 Fairchild Semicond uctor Corporation www.fairchildsemi.com FPF2300/02/03 • Rev . 1.1.3 5 Electrical Characteristics IN = 1.8 to 5.5V , T A = -40 to +85°C unless otherwise noted. T ypical values are at IN = 3.3 V and T A = 25°C. Note: 5. FPF2303 has a 10ms startup FL AGB blanking time w[...]

  • Page 6

    FPF2300/02/03 — Dual-Out put Current Limit Switch © 2009 Fairchild Semicond uctor Corporation www.fairchildsemi.com FPF2300/02/03 • Rev . 1.1.3 6 T ypical Characteristics 0. 00 10. 00 20. 00 30. 00 40. 00 50. 00 60. 00 70. 00 1. 8 2. 2 2. 5 2. 9 3. 3 3. 7 4. 0 4. 4 4. 8 5. 1 5. 5 SUPPLY VOLTAG E ( V ) SUPPLY CURRENT ( u A) ONA = ONB = 0 V 25°[...]

  • Page 7

    FPF2300/02/03 — Dual-Out put Current Limit Switch © 2009 Fairchild Semicond uctor Corporation www.fairchildsemi.com FPF2300/02/03 • Rev . 1.1.3 7 T ypical Characteristics 50 55 60 65 70 75 80 85 90 - 40 -15 10 35 60 8 5 T J , J UNC TI ON TE MPERAT URE ( ° C) ON RESI ST ANCE ( mOhm) R ON A R ON B IN = 5 .5V I OUT = 200m A ONA = ON B = 0 V Figu[...]

  • Page 8

    FPF2300/02/03 — Dual-Out put Current Limit Switch © 2009 Fairchild Semicond uctor Corporation www.fairchildsemi.com FPF2300/02/03 • Rev . 1.1.3 8 T ypical Characteristics 1 10 100 1000 - 40 - 15 10 35 60 8 5 T J , JUN CTI O N TE M PERA TURE ( ° C) TURN ON /OFF DELAY TIME (us) t DOFF t DON IN = 3 .3 V R L = 500 Ohm s C L = 0. 1 uF IN = 3 .3 V [...]

  • Page 9

    FPF2300/02/03 — Dual-Out put Current Limit Switch © 2009 Fairchild Semicond uctor Corporation www.fairchildsemi.com FPF2300/02/03 • Rev . 1.1.3 9 T ypical Characteristics OUT 2V/DIV IN = 5V ON = 3.3V C OUT = 0.1 μ F R L = 500 Ω ON 2V/DIV IN 2V/DIV 200 μ s/DIV IN = 5V ON = 3.3V R L = 5 Ω IN 5V/DIV ON 5V/DIV 200 μ s/DIV I OUT 1A/DIV C OUT[...]

  • Page 10

    FPF2300/02/03 — Dual-Out put Current Limit Switch © 2009 Fairchild Semicond uctor Corporation www.fairchildsemi.com FPF2300/02/03 • Rev . 1.1.3 10 T ypical Characteristics OUTB 2V/DIV IN = 5V ON = 3.3V C OUTA = 100 μ F C OUTB = 100 μ F R LA = R LB = 1 Ω IN 5V/DIV ON 2V/DIV 400 μ s/DIV OUTA 2V/DIV Figure 33. Inrush Response During Ca pacit[...]

  • Page 11

    © 2009 Fairchild Semicond uctor Corporation www.fairchildsemi.com FPF2300/02/03 • Rev . 1.1.3 11 FPF2300/02/03 — Dual-Out put Current Limit Switch Description of Operation The FPF2300, FPF2302, and FPF2303 are dual- output current- limit switches designed to meet notebook computer , per ipheral USB port, and point-of-load (POL) application pow[...]

  • Page 12

    © 2009 Fairchild Semicond uctor Corporation www.fairchildsemi.com FPF2300/02/03 • Rev . 1.1.3 12 FPF2300/02/03 — Dual-Out put Current Limit Switch Figure 37. FPF 2300 FLAGB While and Over-Current Condition is Applied Note: 7. An over-current condition si gnal loads the output with a heavy load current larger than I LIMIT value. Under-V olt age[...]

  • Page 13

    © 2009 Fairchild Semicond uctor Corporation www.fairchildsemi.com FPF2300/02/03 • Rev . 1.1.3 13 FPF2300/02/03 — Dual-Out put Current Limit Switch Application Information Figure 38. Self Powered 4-Po rt USB Hub Using a Single FP F230X FPF230X is designed to simplify USB port power design based on self-powering USB host/hub applications. A self[...]

  • Page 14

    © 2009 Fairchild Semicond uctor Corporation www.fairchildsemi.com FPF2300/02/03 • Rev . 1.1.3 14 FPF2300/02/03 — Dual-Out put Current Limit Switch Figure 40. Self-Powere d USB Port for High Current Demand High current, over 2A, is some times required to supply enough power to downstream functions. As shown in Figure 40, a 2.2A minimum load cur[...]

  • Page 15

    © 2009 Fairchild Semicond uctor Corporation www.fairchildsemi.com FPF2300/02/03 • Rev . 1.1.3 15 FPF2300/02/03 — Dual-Out put Current Limit Switch PCB Layout Recommendations For the best performance, all traces should be as short as possible. T o be most effective, the input and output capacitors should be placed close to the devic e to minimi[...]

  • Page 16

    © 2009 Fairchild Semicond uctor Corporation www.fairchildsemi.com FPF2300/02/03 • Rev . 1.1.3 16 FPF2300/02/03 — Dual-Out put Current Limit Switch FPF230X Evaluation Board The FPF230X evaluation board has components and circuitry to demonstrate FPF2300/2/3 load switch functions and features, accommodating both the MLP 3x3mm and SO8 p ackages. [...]

  • Page 17

    © 2009 Fairchild Semicond uctor Corporation www.fairchildsemi.com FPF2300/02/03 • Rev . 1.1.3 17 FPF2300/02/03 — Dual-Out put Current Limit Switch Dimensional Outline and Pa d Layout Figure 46. 8-Lead SO8 Packa ge Package drawings are provided as a service to custome rs considering Fairchil d components. Drawings may change in any man ner with[...]

  • Page 18

    © 2009 Fairchild Semicond uctor Corporation www.fairchildsemi.com FPF2300/02/03 • Rev . 1.1.3 18 FPF2300/02/03 — Dual-Out put Current Limit Switch Dimensional Outlin e and Pad Layout Figure 47. 8-Lead Molded Leadless Pa ckage (MLP) Package drawings are provided as a service to custome rs considering Fairchil d components. Drawings may change i[...]

  • Page 19

    FPF2300/02/03 — Dual-Out put Current Limit Switch TRADEMARKS The following includes registered and unregistered tra demarks and serv ice marks, owned b y Fairchild Semiconductor an d/or its global subsidianr ies, and is not intended to be an exhaust ive list of all such trademarks. * Trademarks of System General Corporation, us ed under licen se [...]