TPS62600
TPS62601
CSP-6
www.ti.com ...................................................................................................................................................................................................... SLVS678–JUNE 2008
500-mA, 6-MHz SYNCHRONOUS STEP-DOWN CONVERTER
IN CHIP SCALE PACKAGING
1
FEATURES
23
•
89% Efficiency at 6MHz Operation
DESCRIPTION
•
Output Current Up to 500mA
The TPS6260x device is
a
high-frequency
•
•
•
•
•
•
•
•
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Wide VIN Range From 2.3V to 5.5V
6MHz Regulated Frequency Operation
Best in Class Load and Line Transient
±1.5% Total DC Voltage Accuracy
Automatic PFM/PWM Mode Switching
30µA Quiescent Current
synchronous step-down dc-dc converter optimized for
battery-powered portable applications. Intended for
low-power applications, the TPS6260x supports up to
500mA load current, and allows the use of low cost
chip inductor and capacitors.
With a wide input voltage range of 2.3V to 5.5V, the
device supports applications powered by Li-Ion
batteries with extended voltage range. Different fixed
voltage output versions are available from 1V to 2.5V.
35ns Minimum On-Time
Internal Soft Start, <200-µs Start-Up Time
Current Overload and Thermal Shutdown
Protection
The TPS6260x operates at a regulated 6-MHz
switching frequency and enters the power-save mode
operation at light load currents to maintain high
efficiency over the entire load current range.
•
•
Three Surface-Mount External Components
Required (One MLCC Inductor, Two Ceramic
Capacitors)
The PFM mode extends the battery life by reducing
the quiescent current to 30µA (typ) during light load
Complete Sub 1-mm Component Profile
Solution
Total Solution Size <13 mm2
and
standby
operation.
For
noise-sensitive
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 1µA.
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•
Available in a 6-Pin NanoFree™ (CSP)
Packaging
The TPS6260x is available in an 6-pin chip-scale
package (CSP).
APPLICATIONS
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Cell Phones, Smart-Phones
PDAs, Pocket PCs
WLAN and Bluetooth™ Applications
DVB-H Tuner Applications
Portable Hard Disk Drives
DC/DC Micro Modules
100
90
200
180
VI = 3.6 V,
VO = 1.83 V
160
80
Efficiency
PFM/PWM Operation
140
120
70
60
100
80
50
40
30
20
Power Loss
PFM/PWM Operation
TPS 6260x
L
V
O
60
VIN
SW
0.47 mH
1.8 V/ 500 mA
2.3 V.. 5.5 V
40
20
0
C
I
EN
FB
C
L = 0.5 mH (Aircoil),
CO = 4.7 mF
V
I
O
10
0
2.2 mF
4.7 mF
GND
MODE
1
0.1
10
100
1000
IO - Load Current - mA
Figure 1. Smallest Solution Size Application
(Fixed Output Voltage)
Figure 2. Efficiency vs Load Current
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
3
NanoFree is a trademark of Texas Instruments.
Bluetooth is a trademark of Bluetooth SIG, Inc.
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 © 2008, Texas Instruments Incorporated