TPS62590_15 Datasheet, PDF (1/26 Pages) Texas Instruments – 1-A Step Down Converter

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TPS62590
SLVS897C – JANUARY 2009 – REVISED DECEMBER 2015
TPS62590 1-A Step Down Converter in 2-mm × 2-mm WSON Package
1 Features
•1 Output Current up to 1000 mA
• Input Voltage Range from 2.5 V to 5.5 V
• Output Voltage Accuracy in PWM Mode ±2.5%
• Typical 15-μA Quiescent Current
• 100% Duty Cycle for Lowest Dropout
• Available in a 2 mm × 2 mm × 0.8 mm WSON
Package
• For Improved Features Set, See the TPS62290
device (SLVS764)
2 Applications
• Mobile Phones, Smart Phones
• Tablet PCs
• WLAN
• Low Power DSP Supply
• Point-of-Load (POL) Applications
3 Description
The TPS62590 device is a high-efficiency
synchronous step down converter, optimized for
battery powered portable applications. The device
provides up to 1000-mA output current from batteries,
such as single Li-Ion or other common chemistry AA
and AAA cells.
With an input voltage range of 2.5 V to 5.5 V, the
device is targeted to power a large variety of portable
handheld equipment or POL applications.
The TPS62590 family operates at 2.25-MHz fixed
switching frequency and enters a power save mode
operation at light load currents to maintain a 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 pulse width
modulation (PWM) mode by pulling the MODE pin
high. In the shutdown mode the current consumption
is reduced to less than 1 µA. The TPS62590 allows
the use of small inductors and capacitors to achieve a
small solution size.
The TPS62590 is available in a 2-mm × 2-mm 6-pin
WSON package.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS62590
WSON (6)
2.00 mm × 2.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Typical Application Schematic
V_{I N}
2.5 V to 5.5 V
C_IN
10mF
TPS62590DRV
5 _VIN
SW ¹
L
2.2 mH
4
EN
2
MODE
FB 3
GND 6
PwrPAD
R1
R2
C1
22pF
V_OUT
0.75 V to V_IN
C_OUT
10mF
Efficiency vs Output Current
100
90
80
V_I = 5 V
V_I = 4.2 V
70
V_I = 3.8 V
60
50
40
30
20
10
0
0.0001
V_OUT = 3.3 V,
MODE = GND,
L = 2.2 mH
0.001
0.01
0.1
1
I_O - Output 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.