TPS62290-Q1 Datasheet, PDF (1/25 Pages) Texas Instruments – 1-A Step Down Converter in 2 x 2 SON Package

TPS62290-Q1, TPS62291-Q1, TPS62293-Q1
www.ti.com
1-A Step Down Converter in 2 x 2 SON Package
Check for Samples: TPS62290-Q1, TPS62291-Q1, TPS62293-Q1
SLVSAI5 – SEPTEMBER 2010
FEATURES
1
• Qualified for Automotive Applications
• High Efficiency Step Down Converter
• Output Current up to 1000 mA
• V_IN Range From 2.3 V to 6 V
• 2.25 MHz Fixed Frequency Operation
• Power Save Mode at Light Load Currents
• Output Voltage Accuracy in PWM mode ±1.5%
• Fixed Output Voltage Options
• Typ. 15-mA Quiescent Current
• 100% Duty Cycle for Lowest Dropout
• Voltage Positioning at Light Loads
• Available in a 2 × 2 × 0,8 mm SON Package
V_IN 2.7 V to 6.3 V
C_IN
10 mF
TPS62290DRV
V_IN
SW
EN
GND
FB
MODE
L1
2.2 mH
R₁
360 kW
R₂
180 kW
V_OUT 1.8 V,
1000 mA
C₁
22 pF
C_OUT
100
V_IN = 4.2 V
90
80
V_IN = 3.8 V
V_IN = 5 V
70
V_IN = 4.5 V
DESCRIPTION
The TPS6229x-Q1 is a highly efficient synchronous
step down dc-dc converters optimized for
battery-powered portable applications. TPS6229x-Q1
provides up to 1000-mA output current from a single
Li-Ion cell.
With an input voltage range of 2.3 V to 6 V, the
device supports batteries with extended voltage
range and are ideal to power portable applications
like mobile phones and other portable equipment.
The TPS6229x-Q1 operates at 2.25-MHz fixed
switching 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 1 mA.
The TPS6229x-Q1 allows the use of small inductors
and capacitors to achieve a small solution size.
The TPS6229x-Q1 is available in a 2-mm × 2-mm
6-pin SON package.
60
50
V_OUT = 3.3 V,
MODE = GND,
L = 2.2 mH
40
30
0.00001 0.0001 0.001 0.01 0.1
1
I_O - Output Current - A
1
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Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
UNLESS OTHERWISE NOTED this document contains
PRODUCTION DATA information current as of publication date.
Products conform to specifications per the terms of Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2010, Texas Instruments Incorporated