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TPS62261 Datasheet(PDF) 1 Page - Texas Instruments

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Part # TPS62261
Description  2.25-MHz 600-mA STEP-DOWN CONVERTERS
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TPS62261 Datasheet(HTML) 1 Page - Texas Instruments

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10
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60
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100
0.01
0.1
1
10
100
1000
I -OutputCurrent-mA
O
V =2.3V
IN
V =2.7V
IN
V =3V
IN
V =3.6V
IN
V =4.5V
IN
V
=1.8V,
MODE=GND,
L =2.2 H,
DCR110mR
OUT
m
VIN
GND
EN
FB
SW
TPS62260DRV
L
R1
R2
C
10 F
OUT
m
VOUT
MODE
C
4.7 F
IN
m
2.2 H
m
C
22pF
1
V =2Vto6V
IN
Upto600mA
TPS62260-Q1, TPS62261-Q1
TPS62262-Q1, TPS62263-Q1
www.ti.com
SLVSA16C – AUGUST 2009 – REVISED JULY 2012
2.25-MHz 600-mA STEP-DOWN CONVERTERS
Check for Samples: TPS62260-Q1, TPS62261-Q1, TPS62262-Q1, TPS62263-Q1
1
FEATURES
2
Qualified for Automotive Applications
Soft Start
High-Efficiency Step-Down Converter
Voltage Positioning at Light Loads
Output Current up to 600 mA
Available in a Small 2×2×0,8-mm SON Package
Wide VIN Range from 2-V to 6-V for Li-Ion
Allows <1-mm Solution Height
Batteries with Extended Voltage Range
APPLICATIONS
2.25-MHz Fixed Frequency Operation
PDAs, Pocket PCs
Power Save Mode at Light Load Currents
Low Power DSP Supply
Output Voltage Accuracy in PWM Mode ±1.5%
Portable Media Players
15-
μA (Typ) Quiescent Current
POL applications
100% Duty Cycle for Lowest Dropout
DESCRIPTION
The TPS6226x devices are high-efficiency synchronous step-down dc-dc converters optimized for battery
powered applications. It provides up to 600-mA output current from a single Li-Ion cell and is ideal to power
mobile phones and other portable applications.
With an wide input voltage range of 2 V to 6 V, the device supports applications powered by Li-Ion batteries with
extended voltage range, two and three cell alkaline batteries, 3.3-V and 5-V input voltage rails.
The TPS6226x operates at 2.25-MHz fixed switching frequency and enters Power Save Mode operation at light
load currents to maintain high efficiency over the entire load current range.
The Power Save Mode is optimized for low output voltage ripple. For low noise applications, the device can be
forced into fixed frequency PWM mode by pulling the MODE pin high. In the shutdown mode, the current
consumption is reduced to less than 1
μA. TPS6226x allows the use of small inductors and capacitors to achieve
a small solution size.
The TPS6226x is available in a very small 2×2mm 6-pin SON package.
1
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.
2
PowerPAD is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright © 2009–2012, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.


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