TPS61240-Q1_17 Datasheet, PDF (1/26 Pages) Texas Instruments – 3.5-MHz High Efficiency Step-Up Converter

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TPS61240-Q1
SLVSAO4B – DECEMBER 2010 – REVISED MARCH 2017
TPS61240-Q1 3.5-MHz High Efficiency Step-Up Converter
1 Features
•1 Qualified for Automotive Applications
• AEC-Q100 Qualified With the Following Results:
– Device Temperature Grade
– TPS61240IDRVRQ1: Grade 3, –40°C to
+85°C Ambient Operating Temperature
– TPS61240TDRVRQ1: Grade 2, –40°C to
+105°C Ambient Operating Temperature
– Device HBM ESD Classification Level 2
– Device CDM ESD Classification Level C6
• Efficiency > 90% at Nominal Operating Conditions
• Total DC Output Voltage Accuracy 5 V ±2%
• Typical 30 μA Quiescent Current
• Best in Class Line and Load Transient
• Wide V_IN Range From 2.3 V to 5.5 V
• Output current up to 450 mA
• Automatic PFM/PWM Mode transition
• Low Ripple Power Save Mode for Improved
Efficiency at Light Loads
• Internal Softstart, 250 μs typical Start-Up time
• 3.5 MHz Typical Operating Frequency
• Load Disconnect During Shutdown
• Current Overload and Thermal Shutdown
Protection
• Only Three Surface-Mount External Components
Required (One MLCC Inductor, Two Ceramic
Capacitors)
• Total Solution Size < 13 mm²
• Available in a 2 mm × 2 mm WSON Package
2 Applications
• Advanced Driver Assistance Systems (ADAS)
– Front Camera
– Surround View System ECU
– Radar and LIDAR
• Automotive Infotainment and Cluster
– Head Unit
– HMI and Display
• Body Electronics and Lighting
• Factory Automation and Control
3 Description
The TPS61240-Q1 device is a high efficient
synchronous step up DC-DC converter optimized for
products powered by either a three-cell alkaline, NiCd
or NiMH, or one-cell Li-Ion or Li-Polymer battery. The
TPS61240-Q1 supports output currents up to 450
mA. The TPS61240-Q1 has an input valley current
limit of 500 mA.
TPS61240-Q1 device provides fixed output voltage of
5V-typ with an input voltage range of 2.3 V to 5.5 V
and the device supports batteries with extended
voltage range. During shutdown, the load is
completely disconnected from the battery. The
TPS61240-Q1 boost converter is based on a quasi-
constant on-time valley current mode control scheme.
The TPS61240-Q1 presents a high impedance at the
V_OUT pin when shut down. This allows for use in
applications that require the regulated output bus to
be driven by another supply while the TPS61240-Q1
is shut down.
During light loads the device will automatically pulse
skip allowing maximum efficiency at lowest quiescent
currents. In the shutdown mode, the current
consumption is reduced to less than 1 μA.
TPS61240-Q1 allows the use of a small inductor and
capacitors to achieve a small solution size. The
TPS61240-Q1 is available in a 2 mm × 2 mm WSON
package.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS61240-Q1
WSON (6)
2.00 mm × 2.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
V_IN
C_IN
2.2 µF
Simplified Schematic
L
1 µH
TPS61240-Q1
L
V_OUT
V_IN
FB
C_OUT
EN
GND
V_OUT 5 V
4.7 µF
Copyright © 2016, Texas Instruments Incorporated
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.