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Boost Converter/LDO. TPS2505 Datasheet

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Boost Converter/LDO. TPS2505 Datasheet






TPS2505 Converter/LDO. Datasheet pdf. Equivalent




TPS2505 Converter/LDO. Datasheet pdf. Equivalent





Part

TPS2505

Description

Boost Converter/LDO



Feature


Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TPS2505 SPAS093C – DECEMBE R 2009 – REVISED SEPTEMBER 2015 TPS25 05 Integrated Dual USB Switches, Boost Converter and LDO 1 Features •1 Inte grated Synchronous Boost Converter, LDO , and Dual USB Current-Limited Switches • 1.8-V to 5.25-V Input Voltage (2.2 -V Minimum Start-Up Voltag.
Manufacture

Texas Instruments

Datasheet
Download TPS2505 Datasheet


Texas Instruments TPS2505

TPS2505; e) • Adjustable Independent USB Curren t Limit – 100 mA to 1100 mA • Auxil iary 5.1-V Output • 3.3-V Linear Regu lator Output • Inrush Current < 100 m A • Minimal External Components Requi red • Deglitched Independent Fault Re porting • Small 5-mm × 5-mm QFN-20 P ackage • Industrial Temperature Range 2 Applications • Portable Applicatio ns Using Single Li+ Cell • Bus Powered .


Texas Instruments TPS2505

USB Hosts • USB Hosts Without Native 5 -V Supplies • Computer Peripherals 3 Description The TPS2505 device provide s an integrated solution to meet USB 5- V power requirements from a 1.8-V to 5. 25-V input supply. The features include a 5.1-V, 1100-mA boost converter, a 20 0-mA, 3.3-V LDO linear regulator and du al USB 2.0 compliant power outputs with independent output sw.


Texas Instruments TPS2505

itch enable, current limit, and overcurr ent fault reporting. The 1.8-V to 5.25- V input can be supplied by sources incl uding DC-DC regulated supplies (for exa mple, 3.3 V), or batteries such as sing le cell Li+, two-cell or three-cell NiC d, NiMH or alkaline. The output trip cu rrent for the dual USB switches can be programmed through external resistors f rom as low as 100 .

Part

TPS2505

Description

Boost Converter/LDO



Feature


Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TPS2505 SPAS093C – DECEMBE R 2009 – REVISED SEPTEMBER 2015 TPS25 05 Integrated Dual USB Switches, Boost Converter and LDO 1 Features •1 Inte grated Synchronous Boost Converter, LDO , and Dual USB Current-Limited Switches • 1.8-V to 5.25-V Input Voltage (2.2 -V Minimum Start-Up Voltag.
Manufacture

Texas Instruments

Datasheet
Download TPS2505 Datasheet




 TPS2505
Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
TPS2505
SPAS093C – DECEMBER 2009 – REVISED SEPTEMBER 2015
TPS2505 Integrated Dual USB Switches, Boost Converter and LDO
1 Features
1 Integrated Synchronous Boost Converter, LDO,
and Dual USB Current-Limited Switches
• 1.8-V to 5.25-V Input Voltage
(2.2-V Minimum Start-Up Voltage)
• Adjustable Independent USB Current Limit
– 100 mA to 1100 mA
• Auxiliary 5.1-V Output
• 3.3-V Linear Regulator Output
• Inrush Current < 100 mA
• Minimal External Components Required
• Deglitched Independent Fault Reporting
• Small 5-mm × 5-mm QFN-20 Package
• Industrial Temperature Range
2 Applications
• Portable Applications Using Single Li+ Cell
• Bus Powered USB Hosts
• USB Hosts Without Native 5-V Supplies
• Computer Peripherals
3 Description
The TPS2505 device provides an integrated solution
to meet USB 5-V power requirements from a 1.8-V to
5.25-V input supply. The features include a 5.1-V,
1100-mA boost converter, a 200-mA, 3.3-V LDO
linear regulator and dual USB 2.0 compliant power
outputs with independent output switch enable,
current limit, and overcurrent fault reporting.
The 1.8-V to 5.25-V input can be supplied by sources
including DC-DC regulated supplies (for example, 3.3
V), or batteries such as single cell Li+, two-cell or
three-cell NiCd, NiMH or alkaline.
The output trip current for the dual USB switches can
be programmed through external resistors from as
low as 100 mA to as high as 1100 mA.
An auxiliary 5.1-V output is provided, where the total
current supplied by the USB outputs and the auxiliary
by cannot exceed 1100 mA.
Device Information(1)
PART NUMBER PACKAGE
BODY SIZE (NOM)
TPS2505
VQFN (20)
5.00 mm × 5.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Typical Application
2.2µH
HUB
CONTROLLER
Power
Supply
IN
1.8V – 5.25V
10µF
EN
SW
RESET
LDOOUT
EN_LDO
5V Output
RFAULT 1
RFAULT 2
LDOIN
AUX
USB1
22µF
TPS2505
FAULT 1
USB2
FAULT 2
ILIM1
ENUSB1
ENUSB2
ILIM2
GND PAD PGND
3.3V Power
1µF
5V USB Power
120µF
5V USB Power
120µF
RLIM1
RLIM2
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.




 TPS2505
TPS2505
SPAS093C – DECEMBER 2009 – REVISED SEPTEMBER 2015
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 3
6 Specifications......................................................... 4
6.1 Absolute Maximum Ratings ...................................... 4
6.2 ESD Ratings.............................................................. 4
6.3 Recommended Operating Conditions....................... 4
6.4 Thermal Information .................................................. 4
6.5 Electrical Characteristics (Shared Boost, LDO and
USB)........................................................................... 5
6.6 Electrical Characteristics (Boost Only)...................... 5
6.7 Electrical Characteristics (USB1/2 Only) .................. 6
6.8 Electrical Characteristics (LDO and Reset Only)...... 7
6.9 Recommended External Components ...................... 7
6.10 Dissipation Ratings ................................................. 7
6.11 Typical Characteristics ............................................ 8
7 Parameter Measurement Information .................. 9
8 Detailed Description ............................................ 10
8.1 Overview ................................................................. 10
8.2 Functional Block Diagram ....................................... 10
8.3 Feature Description................................................. 11
8.4 Device Functional Modes........................................ 18
9 Application and Implementation ........................ 19
9.1 Application Information............................................ 19
9.2 Typical Application ................................................. 19
10 Power Supply Recommendations ..................... 23
11 Layout................................................................... 24
11.1 Layout Guidelines ................................................. 24
11.2 Layout Example .................................................... 24
12 Device and Documentation Support ................. 25
12.1 Community Resources.......................................... 25
12.2 Trademarks ........................................................... 25
12.3 Electrostatic Discharge Caution ............................ 25
12.4 Glossary ................................................................ 25
13 Mechanical, Packaging, and Orderable
Information ........................................................... 25
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision B (June 2010) to Revision C
Page
• Added Pin Configuration and Functions section, ESD Ratings table, Feature Description section, Device Functional
Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device
and Documentation Support section, and Mechanical, Packaging, and Orderable Information section .............................. 1
2
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Product Folder Links: TPS2505
Copyright © 2009–2015, Texas Instruments Incorporated




 TPS2505
www.ti.com
5 Pin Configuration and Functions
TPS2505
SPAS093C – DECEMBER 2009 – REVISED SEPTEMBER 2015
RGW Package
20-Pin VQFN With Exposed Thermal Pad
Top View
20 19 18 17 16
PGND 1
IN 2
EN 3
GND 4
ILIM1 5
15 USB2
14 ENUSB2
13 FAULT2
12 ENLDO
11 LDOIN
6 7 8 9 10
NAME
PIN
NO.
AUX
18
EN
3
ENLDO
12
ENUSB1
8
ENUSB2
14
FAULT1
7
FAULT2
13
GND
4
ILIM1
5
ILIM2
6
IN
2
LDOIN
11
LDOOUT
10
PGND
1
RESET
9
SW
19
TYPE (1)
O
I
I
I
I
O
O
P
I
I
I
I
O
P
O
P
SW
20
P
USB1
16
O
USB1
17
O
USB2
15
O
Thermal Pad
(1) I = Input; O = Output; P = Power
Pin Functions
DESCRIPTION
Fixed 5.1-V boost converter output. Connect a low-ESR ceramic capacitor from AUX to
PGND.
Enable input for boost converter. Tie to IN to enable.
Enable input for the LDO. Tie to AUX to enable.
Enable input for the USB1 switch. Tie to IN or AUX to enable.
Enable input for the USB2 switch. Tie to IN or AUX to enable.
Active low USB1 fault indicator (open drain).
Active low USB2 fault indicator (open drain).
Control / logic ground. Must be tied to PGND close to the IC externally.
Program the nominal USB1 switch current-limit threshold with a resistor to GND.
Program the nominal USB2 switch current-limit threshold with a resistor to GND.
Input supply voltage for boost converter.
Input supply voltage for LDO. Connect to AUX.
Fixed 3.3-V LDO output. Connect a low-ESR ceramic capacitor from LDOOUT to GND.
Source connection for the internal low-side boost converter power switch. Connect to GND
with a low impedance connection to the input and output capacitors.
Active low LDO output good indicator (open drain).
Boost and rectifying switch input. This node is switched between PGND and AUX. Connect
the boost inductor from IN to SW.
Boost and rectifying switch input. This node is switched between PGND and AUX. Connect
the boost inductor from IN to SW.
Output of the USB1 power switch. Connect to the USB1 port.
Output of the USB1 power switch. Connect to the USB1 port.
Output of the USB2 power switch. Connect to the USB2 port.
Internally connected to PGND. Must be soldered to board ground for thermal dissipation.
Copyright © 2009–2015, Texas Instruments Incorporated
Product Folder Links: TPS2505
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