Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.COM

X  

TPS62403 Datasheet(PDF) 18 Page - Texas Instruments

Click here to check the latest version.
Part # TPS62403
Description  2.25MHz 400mA/600mA Dual Step-Down Converter In Small 3x3mm QFN Package
Download  39 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TPS62403 Datasheet(HTML) 18 Page - Texas Instruments

Back Button TPS62403 Datasheet HTML 14Page - Texas Instruments TPS62403 Datasheet HTML 15Page - Texas Instruments TPS62403 Datasheet HTML 16Page - Texas Instruments TPS62403 Datasheet HTML 17Page - Texas Instruments TPS62403 Datasheet HTML 18Page - Texas Instruments TPS62403 Datasheet HTML 19Page - Texas Instruments TPS62403 Datasheet HTML 20Page - Texas Instruments TPS62403 Datasheet HTML 21Page - Texas Instruments TPS62403 Datasheet HTML 22Page - Texas Instruments Next Button
Zoom Inzoom in Zoom Outzoom out
 18 / 39 page
background image
www.ti.com
95%
5%
tRAMP
t Startup
EN
VOUT
100% Duty Cycle Low Dropout Operation
Vin
min + Voutmax ) Ioutmax
RDSonmax ) RL
(3)
Under-Voltage Lockout
MODE SELECTION
TPS62400
,, TPS62401
TPS62403
SLVS681C – JUNE 2006 – REVISED DECEMBER 2006
DETAILED DESCRIPTION (continued)
Figure 32. Soft Start
The converters offer a low input-to-output voltage difference while still maintaining operation with the use of the
100% duty cycle mode. In this mode the P-channel switch is constantly turned on. This is particularly useful in
battery-powered applications to achieve longest operation time by taking full advantage of the whole battery
voltage range. The minimum input voltage to maintain regulation depends on the load current and output
voltage, and can be calculated as:
with:
Ioutmax = maximum output current plus inductor ripple current
RDSonmax = maximum P-channel switch RDSon.
RL = DC resistance of the inductor
Voutmax = nominal output voltage plus maximum output voltage tolerance
With decreasing load current, the device automatically switches into pulse skipping operation in which the power
stage operates intermittently based on load demand. By running cycles periodically the switching losses are
minimized and the device runs with a minimum quiescent current, maintaining high efficiency.
The under-voltage lockout circuit prevents the device from malfunctioning at low input voltages, and from
excessive discharge of the battery, and disables the converters. The under-voltage lockout threshold is typically
1.5V; maximum of 2.35V. In case the default register values are overwritten by the Interface, the new values in
the registers REG_DEF_1_High, REG_DEF_1_Low and REG_DEF_2 remain valid as long the supply voltage
does not fall below the under-voltage lockout threshold, independent of whether the converters are disabled.
The MODE/DATA pin allows mode selection between forced PWM Mode and Power Save Mode for both
converters. Furthermore, this pin is a multipurpose pin and provides (besides Mode selection) a one-pin
interface to receive serial data from a host to set the output voltage. This is described in the EasyScale™
Interface section.
Connecting this pin to GND enables the automatic PWM and power save mode operation. The converters
operates in fixed-frequency PWM mode at moderate-to-heavy loads, and in the PFM mode during light loads,
maintaining high efficiency over a wide load current range.
18
Submit Documentation Feedback


Similar Part No. - TPS62403

ManufacturerPart #DatasheetDescription
logo
Texas Instruments
TPS62403 TI-TPS62403 Datasheet
1Mb / 43P
[Old version datasheet]   2.25MHz 400mA/600mA Dual Step-Down Converter In Small 3x3mm QFN Package
TPS62403 TI-TPS62403 Datasheet
1Mb / 43P
[Old version datasheet]   2.25MHz 400mA/600mA Dual Step-Down Converter In Small 3x3mm QFN Package
TPS62403 TI-TPS62403 Datasheet
1Mb / 44P
[Old version datasheet]   2.25MHz 400mA/600mA Dual Step-Down Converter In Small 3x3mm QFN Package
TPS62403 TI1-TPS62403 Datasheet
1Mb / 41P
[Old version datasheet]   2.25-MHz 400-mA/600-mA DUAL STEP-DOWN CONVERTER
TPS62403 TI1-TPS62403 Datasheet
1Mb / 43P
[Old version datasheet]   2.25MHz 400mA/600mA Dual Step-Down Converter In Small 3x3mm QFN Package
More results

Similar Description - TPS62403

ManufacturerPart #DatasheetDescription
logo
Texas Instruments
TPS62400_101 TI-TPS62400_101 Datasheet
1Mb / 44P
[Old version datasheet]   2.25MHz 400mA/600mA Dual Step-Down Converter In Small 3x3mm QFN Package
TPS62400 TI-TPS62400_07 Datasheet
1Mb / 43P
[Old version datasheet]   2.25MHz 400mA/600mA Dual Step-Down Converter In Small 3x3mm QFN Package
TPS62400 TI-TPS62400_10 Datasheet
1Mb / 43P
[Old version datasheet]   2.25MHz 400mA/600mA Dual Step-Down Converter In Small 3x3mm QFN Package
TPS62400 TI1-TPS62400_14 Datasheet
1Mb / 43P
[Old version datasheet]   2.25MHz 400mA/600mA Dual Step-Down Converter In Small 3x3mm QFN Package
TPS62420 TI1-TPS62420_14 Datasheet
1Mb / 37P
[Old version datasheet]   2.25MHz 600mA/1000mA Dual Step Down Converter In Small 3x3mm QFN Package
TPS62420 TI-TPS62420 Datasheet
1Mb / 32P
[Old version datasheet]   2.25MHz 600mA/1000mA Dual Step Down Converter In Small 3x3mm QFN Package
TPS62410-Q1 TI1-TPS62410-Q1 Datasheet
1Mb / 35P
[Old version datasheet]   2.25MHz 2x800mA Dual Step Down Converter In Small 3x3mm QFN Package
TPS62410 TI-TPS62410 Datasheet
1Mb / 34P
[Old version datasheet]   2.25MHz 2x800mA Dual Step Down Converter In Small 3x3mm QFN Package
TPS62410-Q1 TI-TPS62410-Q1_15 Datasheet
1Mb / 36P
[Old version datasheet]   2.25MHz 2x800mA Dual Step Down Converter In Small 3x3mm QFN Package
logo
Union Semiconductor, In...
UM3521DA UNIONSEMI-UM3521DA Datasheet
609Kb / 10P
   600mA, 2.25MHz, Synchronous Step-Down DC-DC Converter
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39


Datasheet Download

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
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