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Details, datasheet, quote on part number:TPS2074DBR
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| Part: | TPS2074DBR |
| Category: | Power Management => Power Distribution/Switches => USB Power Controllers/Switches => USB Power Controllers |
| Description: | ti TPS2074, PWR Controller For Bus/self PWRD Usb Hub With 3.3V LDO, 8 PWR Switches, Act-low Bpmode Indicator |
| Company: | Texas Instruments, Inc. |
| Datasheet: | Download TPS2074DBR datasheet File size : 403 kB |
| Request For quote: | Find where to buy TPS2074DBR
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Datasheet text preview:
TPS2074, TPS2075 FOUR-PORT USB HUB POWER CONTROLLERS
SLVS288A SEPTEMBER 2000 REVISED FEBRUARY 2001
D D D D D D D D D D
Complete USB Hub Power Solution Meets USB Specifications 1.1 and 2.0 Independent Thermal and Short-Circuit Protection 3.3-V Regulator for USB Hub Controller Overcurrent Logic Outputs 4.5-V to 5.5-V Operating Range CMOS- and TTL-Compatible Enable Inputs 185 µA Bus-Power Supply Current Available in 24-Pin SSOP Package 40°C to 85°C Ambient Temperature Range
DB PACKAGE (TOP VIEW)
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-powered and self-powered hub requirements. These devices are also designed for hybrid hub implementations and allow for automatic switching 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 Nchannel MOSFET high-side power switch for 500 mA self-powered operation. Each port also has a current-limited 500-m N-channel MOSFET high-side power switch for 100-mA buspowered 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.
PG_DLY EN1 AGND PG SP SP NC 3.3V_OUT BPMODE DP0_RST EN2 DGND
1 2 3 4 5 6 7 8 9 10 11 12
24 23 22 21 20 19 18 17 16 15 14 13
BP_DIS BP OUT1 OUT2 OUT3 OUT4 OC4 OC3 OC2 OC1 EN4 EN3
NC No internal connection Pin 9 is active low (BPMODE) for TPS2074 and active high (BPMODE) for TPS2075.
simplified hybrid-hub diagram
D+ D Power Supply SP TPS2074 OUT3 DP0_RST BP 3.3 V_OUT 1.5 k OUT4 BPMODE OUT1 OUT2 D+ D 5V GND 5V GND
Downstream Ports VCC EN OC DP1 DM1 DP2 DM2 DP3 DM3 DP4 DM4 D+ D 5V GND
Upstream Port D+ D 5V GND
DP0 DM0 Hub Controller
D+ D 5V GND
See Figure 33 for complete implementation.
SELECTION GUIDE TA USB HUB POWER CONTROLLERS HUB POWER CONTROLLERS Four-port with internal LDO controller with internal LDO controller 40°C to 85°C to 85°C Four-port without internal LDO controller without internal LDO controller 24 PACKAGED DEVICES PIN COUNT 32 BPMODE Active low Active high Active low Active high HTSSOP (DAP) TPS2070DAP TPS2071DAP -- -- SSOP (DB) -- -- TPS2074DB TPS2075DB
The DB package is available taped and reeled. Add an R suffix to the device type (e.g., TPS2074DBR). 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.
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.
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
1
TPS2074, TPS2075 FOUR-PORT USB HUB POWER CONTROLLERS
SLVS288A SEPTEMBER 2000 REVISED FEBRUARY 2001
functional block diagram
3.3 V/100 mA LDO
3.3 V_OUT PG PG_DLY
BP S1 OUT1 SP SP S2
S3 OUT2
S4
S5 OUT3
S6
S7 OUT4
S8 DPO_RST BP_DIS AGND DGND Control Logic EN1 OC1 EN2 OC2 EN3 OC3 EN4 OC4 BPMODE (TPS2074) BPMODE (TPS2075)
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POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
TPS2074, TPS2075 FOUR-PORT USB HUB POWER CONTROLLERS
SLVS288A SEPTEMBER 2000 REVISED FEBRUARY 2001
Terminal Functions
TERMINAL NAME PG_DLY EN1 AGND PG SP SP NC 3.3V_OUT BPMODE DP0_RST EN2 DGND EN3 EN4 OC1 OC2 OC3 OC4 OUT4 OUT3 OUT2 OUT1 BP NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 I I O O O O O O O O I O O O I O I I I I/O DESCRIPTION Adjusts the PG time delay with a capacitor to ground. Adjust the pulse width to fit the application. Active-low enable for OUT1 Analog ground Logic output, power good Self-power voltage input, connects to local power supply Self-power voltage input, connects to local power supply No internal connection 3.3-V internal voltage regulator output A logic signal that indicates if the outputs source from the bus-powered supply, BPMODE (TPS2074) or BPMODE (TPS2075), can be used to signal the hub controller. Connects to DP signal from upstream hub/host through an external 1.5-k resistor Active-low enable for OUT2 Digital ground Active-low enable for OUT3 Active-low enable for OUT4 Logic output, overcurrent response for OUT1 Logic output, overcurrent response for OUT2 Logic output, overcurrent response for OUT3 Logic output, overcurrent response for OUT4 Power switch output for downstream ports Power switch output for downstream ports Power switch output for downstream ports Power switch output for downstream ports Bus power voltage input, connect to VBUS
BP_DIS 24 I Active-high logic input, disables autoswitch to bus power when self power is disconnected. Connect to BP or GND Use the following formula to calculate the capacitance needed; C = (desired pulse width × 3 × 106 / 1.22 Pin 9 is active low for TPS2074 and active high for TPS2075.
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
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