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TPS2074DBR Datasheet(PDF) 1 Page - Texas Instruments |
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TPS2074DBR Datasheet(HTML) 1 Page - Texas Instruments |
1 / 25 page ![]() TPS2074, TPS2075 FOUR-PORT USB HUB POWER CONTROLLERS SLVS288A – SEPTEMBER 2000 – REVISED FEBRUARY 2001 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 D Complete USB Hub Power Solution D Meets USB Specifications 1.1 and 2.0 D Independent Thermal and Short-Circuit Protection D 3.3-V Regulator for USB Hub Controller D Overcurrent Logic Outputs D 4.5-V to 5.5-V Operating Range D CMOS- and TTL-Compatible Enable Inputs D 185 µA Bus-Power Supply Current D Available in 24-Pin SSOP Package D –40°C to 85°C Ambient Temperature Range description The TPS2074 and TPS2075 provide a complete USB hub power solution by incorporating three major functions: current-limited power switches for four ports, a 3.3-V 100-mA regulator, and a DP0 line control to signal attach/detach of the hub. These devices are designed to meet bus-pow- ered and self-powered hub requirements. These devices are also designed for hybrid hub implementations and allow for automatic switch- ing from self-powered mode to bus-powered mode if loss of self-power is experienced. This feature can be disabled by applying a logic high to the BP_DIS input Each port has a current-limited 100-m Ω N- channel MOSFET high-side power switch for 500 mA self-powered operation. Each port also has a current-limited 500-m Ω N-channel MOS- FET high-side power switch for 100-mA bus- powered operation. All the N-channel MOSFETs are designed without parasitic diodes, preventing current backflow into the inputs. For applications where a 5-V regulator is needed, use the TPS2070 or TPS2071 device. SELECTION GUIDE TA USB HUB POWER CONTROLLERS PACKAGED DEVICES TA USB HUB POWER CONTROLLERS PIN COUNT BPMODE HTSSOP (DAP) SSOP (DB)† Four port with internal LDO controller 32 Active low TPS2070DAP — 40 °Cto85°C Four-port with internal LDO controller 32 Active high TPS2071DAP — – 40 °C to 85°C Four port without internal LDO controller 24 Active low — TPS2074DB Four-port without internal LDO controller 24 Active high — TPS2075DB † The DB package is available taped and reeled. Add an R suffix to the device type (e.g., TPS2074DBR). Copyright 2001, Texas Instruments Incorporated PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. NC – No internal connection † Pin 9 is active low (BPMODE) for TPS2074 and active high (BPMODE) for TPS2075. SP DP0_RST BP DP0 DM0 Power Supply D+ D– 5 V GND 1.5 k Ω Upstream Port 3.3 V_OUT BPMODE D+ D– 5 V GND D+ D– 5 V GND D+ D– 5 V GND D+ D– 5 V GND OUT1 OUT2 OUT3 OUT4 DP1 DM1 DP2 DM2 DP3 DM3 DP4 DM4 Downstream Ports TPS2074 Hub Controller VCC EN OC simplified hybrid-hub diagram‡ ‡ See Figure 33 for complete implementation. 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 PG_DLY EN1 AGND PG SP SP NC 3.3V_OUT BPMODE† DP0_RST EN2 DGND BP_DIS BP OUT1 OUT2 OUT3 OUT4 OC4 OC3 OC2 OC1 EN4 EN3 DB PACKAGE (TOP VIEW) |
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