TPS62590-Q1_15 Datasheet, PDF (1/28 Pages) Texas Instruments – TPS62590-Q1 Automotive 2.25-MHz 1-A Step-Down Converter In 2-mm × 2-mm SON Package

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TPS62590-Q1
SLVSAO5B – DECEMBER 2010 – REVISED OCTOBER 2015
TPS62590-Q1 Automotive 2.25-MHz 1-A Step-Down Converter In 2-mm × 2-mm SON
Package
1 Features
•1 Qualified for Automotive Applications
• Output Current up to 1000 mA
• Input Voltage Range from 2.5 V to 6 V
• High Efficiency Step Down Converter
• Output Voltage Accuracy in PWM mode ±2.5%
• Typical 15-μA Quiescent Current
• 2.25 MHz Fixed Frequency Operation
• Power Save Mode at Light Load Currents
• 100% Duty Cycle for Lowest Dropout
2 Applications
• Automotive Infotainment and Cluster
– Head Unit
– Navigation
– Display
• Advanced Driver Assistance System (ADAS)
– Front Cameras
– Blind Spot Monitoring
– Lane Departure Warning
– Park Assist
3 Description
The TPS62590-Q1 device is a high-efficiency
synchronous step-down converter, optimized for
space constrained applications and very low
quiescent current requirements. It provides up to
1000-mA output current from preregulated low
voltage rails and consumes 15 uA (typical) in power-
save mode.
With an input voltage range of 2.5 V to 6 V and an
output voltage accuracy of 2.5%, the device is
targeted to power a large variety of automotive
applications.
The TPS62590-Q1 family operates at a 2.25-MHz
fixed switching frequency and enters a power-save
mode 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 PWM mode by
pulling the MODE pin high. In the shutdown mode,
the current consumption is reduced to less than 1 µA.
The TPS62590-Q1 allows the use of small inductors
and capacitors to achieve a small solution size.
The TPS62590-Q1 is available in a 2-mm × 2-mm
6-pin SON package with a thermal pad for improved
thermal performance.
VIN
2.5 V to 6 V
CIN
10m F
Typical Application Schematic
TPS62590DRV
L
5 _VIN
SW ^{1 2.2 mH}
4 _EN
2 _MODE
R1
FB 3
GND 6
R2
Th^Per^wm^ra^Pl^AP^Dad
C1
22 pF
VOUT
0.75 V to VIN
COUT
10 mF
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS62590-Q1
SON (6)
2.00 mm × 2.00
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Efficiency vs Load Current
100
90
80
V_I = 5 V
70
V_I = 4.2 V
60
V_I = 3.8 V
50
40
30
V_OUT = 3.3 V,
20
MODE = GND,
10
0
0.0001
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.