TPS62061 Datasheet, PDF (1/26 Pages) Texas Instruments – 3-MHz 1.6A Step Down Converter in 2x2 SON Package

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TPS62061, TPS62063
TPS62060
SLVSA95A – MARCH 2010 – REVISED JANUARY 2011
3-MHz 1.6A Step Down Converter in 2x2 SON Package
Check for Samples: TPS62061, TPS62063, TPS62060
FEATURES
1
•2 3 MHz Switching Frequency
• V_IN Range from 2.7V to 6V
• 1.6A Output Current
• Up to 97% Efficiency
• Power Save Mode / 3 MHz Fixed-PWM Mode
• Output Voltage Accuracy in PWM Mode ±1.5%
• Output Discharge Function
• Typical 18 µA Quiescent Current
• 100% Duty Cycle for Lowest Dropout
• Voltage Positioning
• Clock Dithering
• Supports Maximum 1mm Height Solutions
• Available in a 2x2x0.75mm SON
APPLICATIONS
• POL
• Notebooks, Pocket PCs
• Portable Media Players
• DSP Supply
DESCRIPTION
The TPS62060 is a highly efficient synchronous
step-down DC-DC converter and provides up to 1.6A
output current.
With an input voltage range of 2.7V to 6V the device
is a perfect fit for power conversion from a single
Li-Ion battery as well from 5V or 3.3V system supply
rails. The TPS62060 operates at 3-MHz fixed
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 1µA and an internal circuit
discharges the output capacitor.
TPS62060 is optimized for operation with a tiny
1.0µH inductor and a small 10µF output capacitor to
achieve smallest solution size and high regulation
performance.
The TPS62060 is available in a small 2x2x0.75mm
8-pin SON package.
vertical spacer
vertical spacer
TYPICAL APPLICATION CIRCUIT
V_IN = 2.7 V to 6 V
C_IN
10 mF
TPS62060
PVIN
SW
AVIN
EN
MODE
FB
AGND
PGND
L
1.0 mH
R₁
360 kW
R₂
180 kW
C_ff
22 pF
V_OUT = 1.8 V
up to 1.6 A
C_OUT
10 mF
100
V_IN = 3.7 V
95
90
V_IN = 4.2 V
85
V_IN = 5 V
80
75
70
65
L = 1.2 mH (NRG4026T 1R2),
60
C_OUT = 22 mF (0603 size),
55
V_OUT = 3.3 V,
Mode: Auto PFM/PWM
50
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6
I_L - Load Current - A
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.
PowerPAD is a trademark of Texas Instruments.
2
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 © 2010–2011, Texas Instruments Incorporated