TPS62065 Datasheet, PDF (1/25 Pages) Texas Instruments – 3-MHz 2A Step Down Converter in 2x2 SON Package

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TPS62065, TPS62067
SLVS833 – MARCH 2010
3-MHz 2A Step Down Converter in 2x2 SON Package
Check for Samples: TPS62065, TPS62067
FEATURES
1
•2 3 MHz Switching Frequency
• V_IN Range from 3.0V to 6V
• Up to 97% Efficiency
• Power Save Mode / 3MHz 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 1mm Height Solutions
• Available in a 2x2x0.75mm SON
APPLICATIONS
• POL
• Notebooks, Pocket PCs
• Portable Media Players
• DSP Supply
DESCRIPTION
The TPS6206x is a family of highly efficient
synchronous step down DC-DC converters. They
provide up to 2.0A output current.
With an input voltage range of 3.0V to 6V the device
is a perfect fit for power conversion from a 5V or 3.3V
system supply rail. The TPS6206x operates at 3MHz
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 1µA and an internal circuit
discharges the output capacitor.
TPS6206x family 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 TPS6206X is available in a small 2x2x0.75mm
8-pin SON package.
TYPICAL APPLICATION CIRCUIT
V_IN = 3 V to 6 V
C_IN
10 mF
TPS62067
PVIN
SW
AVIN
EN
FB
AGND
PGND
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
100
V_IN = 3.7 V
95
90
85 ^{VIN = 4.2 V}
V_IN = 5 V
80
75
70
65
60
55
50
0
L = 1.2 mH (NRG4026T 1R2),
C_OUT = 22 mF (0603 size),
V_OUT = 3.3 V,
Mode: Auto PFM/PWM
0.25 0.5 0.75 1 1.25 1.5 1.75 2
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, Texas Instruments Incorporated