Datasheet

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10
20
30
40
50
60
70
80
90
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0.01 0.1 1 10 100 1000
I -OutputCurrent-mA
O
Efficiency-%
V =2.3V
IN
V =2.7V
IN
V =3V
IN
V =3.6V
IN
V =4.5V
IN
V =1.8V,
MODE=GND,
L =2.2 H,
DCR110mR
OUT
m
V
IN
GND
EN
FB
SW
TPS62260DRV
L
R
1
R
2
C
10 F
OUT
m
V
OUT
MODE
C
4.7 F
IN
m
2.2 Hm
C
22pF
1
V =2Vto6V
IN
Upto600mA
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 V
IN
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.
2PowerPAD 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.