TPS62065_15 Datasheet, PDF (1/28 Pages) Texas Instruments – TPS6206x 3-MHz, 2-A, Step-Down Converter in 2-mm × 2-mm SON Package

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TPS62065, TPS62067
SLVS833C – MARCH 2010 – REVISED JULY 2015
TPS6206x 3-MHz, 2-A, Step-Down Converter in 2-mm × 2-mm SON Package
1 Features
•1 3-MHz Switching Frequency
• V_IN Range from 2.9 V to 6 V
• Up to 97% Efficiency
• Power Save Mode / 3-MHz Fixed PWM Mode
• Power Good Output
• Output Voltage Accuracy in PWM Mode ±1.5%
• Output Capacitor Discharge Function
• Typical 18 µA Quiescent Current
• 100% Duty Cycle for Lowest Dropout
• Voltage Positioning
• Clock Dithering
• Supports Maximum 1-mm Height Solutions
• Available in a 2 mm x 2 mm x 0.75 mm WSON
2 Applications
• Point of Load (POL)
• Notebooks, Pocket PCs
• Portable Media Players
• DSP Supply
3 Description
The TPS6206x is a family of highly efficient
synchronous step down DC/DC converters. They
provide up to 2-A output current.
With an input voltage range of 2.9 V to 6 V, the
device is a perfect fit for power conversion from a 5-V
or 3.3-V system supply rail. The TPS6206x 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, TPS62065 can be
forced into fixed frequency PWM mode by pulling the
MODE pin high. TPS62067 provides an open drain
power good output.
In the shutdown mode, the current consumption is
reduced to less than 1 µA and an internal circuit
discharges the output capacitor.
TPS6206x family is optimized for operation with a tiny
1 µH inductor and a small 10-µF output capacitor to
achieve smallest solution size and high regulation
performance.
The TPS6206x operates over a free air temperature
range of –40°C to 85°C. It is available in a small 2-
mm × 2-mm × 0.75-mm 8-pin WSON package.
V_IN = 2.9 V to 6 V
C_IN
10 mF
Typical Application Schematic
PVIN
AVIN
EN
AGND
PGND
SW
FB
PG
L
1.0 mH
R₁
360 kW
R₂
180 kW
V_OUT
1.8 V 2 A
C_ff
C_OUT
22 pF 10 mF
R_PG
100 kW
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS62065
TPS62067
WSON (8)
2.00 mm × 2.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Efficiency vs Load Current
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 0.25 0.5 0.75 1 1.25 1.5 1.75 2
I_L - Load Current - A
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.