Electronic Components Datasheet Search |
|
MIC2529-2BM Datasheet(PDF) 1 Page - Micrel Semiconductor |
|
MIC2529-2BM Datasheet(HTML) 1 Page - Micrel Semiconductor |
1 / 11 page June 1999 1 MIC2529 MIC2529 Micrel MIC2529 Single-Channel USB Power Controller Advance Information General Description The MIC2529 is a high-side power switch optimized for self- powered (individual port switching) and bus-powered (ganged port switching) Universal Serial Bus (USB) hub applications. An on-board voltage regulator provides the 3.3V supply voltage needed for many USB microcontrollers reducing board component count. The MIC2529 satisfies the following USB requirements: it supplies up to 500mA as required by USB downstream devices; the switch’s low on-resistance meets USB voltage drop requirements; fault current is limited to typically 750mA, well below the UL 25VA safety requirement; and a flag output is available to indicate fault conditions to the local USB controller. Soft start eliminates the momentary voltage drop on the upstream port that may occur when the switch is enabled in bus-powered applications. A low-dropout (LDO) regulator provides 3.3V at loads up to 100mA and includes an enable pin for low current shutdown. Both enable inputs are compatible with 3.3V and 5V logic. Thermal shutdown prevents catastrophic failure from high- current loads. The MIC2529 is available in an 8-pin SOIC package with active-high or active-low enable circuitry on switch. Typical Applications ON/OFF OVERCURRENT MIC2529 3.3V USB Controller VBUS D+ D– GND VBUS D+ D– GND 33µF† Ferrite Bead D– D+ V+ EN IN FLG OUT OUT 3VOUT Bold lines indicate 0.1" wide, 1-oz. copper high-current traces. Downstream USB Port 1 100mA max. Downstream USB Port 2 100mA max. 33µF† VBUS D+ D– GND VBUS D+ D– GND 33µF† 3VEN GND Downstream USB Port 3 100mA max. Downstream USB Port 4 100mA max. 33µF† 0.01µF 0.01µF 0.01µF 0.01µF GND 0.1 µF 1µF 83 12 67 54 1.5k* 5% 4.7 µF * Speed sense termination resistor. Must be connected between V3VOUT and D+ to indicate high speed operation. † 33µF tantalum or 100µF electrolytics are recommended. Upstream VBUS D+ D– GND 10k 0.1µF 10k 4.40V to 5.25V 4-Port Ganged Bus-Powered Hub Features • Compliant to USB specifications • UL Recognized Component • On-board 3.3V, 100mA low-dropout regulator • 500mA minimum continuous switch load current • 160m Ω maximum on-resistance • 750mA typical current limit • Open-drain fault flag pin for switch • Output can be forced higher than input (off-state) • Thermal shutdown • 1ms turn-on (soft-start) and fast turnoff • Available with active-high or active-low switch enable • Active-high enable on 3.3V regulated output • 8-pin SOIC package Applications • USB self-powered hubs • USB bus-powered hubs • USB keyboard hubs UL Recognized Component |
Similar Part No. - MIC2529-2BM |
|
Similar Description - MIC2529-2BM |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.NET |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |