TPS62400, TPS62401
TPS62402, TPS62403, TPS62404
www.ti.com
SLVS681E –JUNE 2006–REVISED APRIL 2010
2.25MHz 400mA/600mA Dual Step-Down Converter In Small 3x3mm QFN Package
Check for Samples: TPS62400, TPS62401, TPS62402, TPS62403, TPS62404
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FEATURES
DESCRIPTION
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High Efficiency—Up to 95%
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VIN Range From 2.5 V to 6 V
The TPS6240x device series are synchronous dual
step-down DC-DC converters optimized for battery
powered portable applications. They provide two
independent output voltage rails powered by 1-cell
Li-Ion or 3-cell NiMH/NiCD batteries. The devices are
also suitable to operate from a standard 3.3V or 5V
voltage rail.
2.25 MHz Fixed Frequency Operation
Output Current 400 mA and 600 mA
Adjustable Output Voltage From 0.6V to VIN
Pin Selectable Output Voltage Supports
Simple Dynamic Voltage Scaling
With an input voltage range of 2.5V to 6V the
TPS62400 is ideal to power portable applications like
smart phones, PDAs and other portable equipment.
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EasyScale™ Optional One-Pin Serial Interface
Power Save Mode at Light Load Currents
180° Out of Phase Operation
With the EasyScale™ serial interface the output
voltages can be modified during operation. The fixed
output voltage versions TPS62401, TPS62402,
TPS62403, and TPS62404 support one pin controlled
simple Dynamic Voltage Scaling for low power
processors.
Output Voltage Accuracy in PWM Mode ±1%
Typical 32-mA Quiescent Current for Both
Converters
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100% Duty Cycle for Lowest Dropout
Available in a 10-Pin QFN (3×3mm)
The TPS6240x operates at 2.25MHz fixed switching
frequency and enters the power save mode operation
at light load currents to maintain high efficiency over
the entire load current range. For low noise
applications the devices can be forced into fixed
frequency PWM mode by pulling the MODE/DATA
pin high. In the shutdown mode, the current
consumption is reduced to 1.2mA, typical. The
devices allow the use of small inductors and
capacitors to achieve a small solution size.
APPLICATIONS
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Cell Phones, Smart-phones
PDAs, Pocket PCs
OMAP™ and Low Power DSP Supply
Portable Media Players
Digital Radio
Digital Cameras
TPS62401
VIN 2.5 V – 6 V
The TPS62400 is available in a 10-pin leadless
package (3×3mm QFN)
VIN
FB 1
2.2 mH
V
: 1.575 V
out1
400 mA
10 mF
SW1
100
DEF_1
10 mF
90
EN_1
EN_2
80
70
60
50
40
30
20
10
0
V
OUT2
= 1.8 V
2.2 mH
V
= 3.6 V
MODE/DATA = 0
IN
V
: 1.8 V
out2
600 mA
SW2
MODE/
DATA
V
OUT1
= 1.575 V
10 mF
ADJ2
GND
0.01
0.1
1
10
100
1000
I
OUT
mA
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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.
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EasyScale, OMAP, PowerPAD are trademarks of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2006–2010, Texas Instruments Incorporated