TPS61040-Q1_16 Datasheet, PDF (1/27 Pages) Texas Instruments – Low-Power DC-DC Boost Converter in SOT-23 Package

Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
TPS61040-Q1, TPS61041-Q1
SGLS276D – JANUARY 2005 – REVISED MARCH 2016
TPS6104x-Q1 Low-Power DC-DC Boost Converter in SOT-23 Package
1 Features
•1 Qualified for Automotive Applications
• 1.8-V to 6-V Input Voltage Range
• Adjustable Output Voltage Range Up to 28 V
• 400-mA (TPS61040-Q1) and 250-mA (TPS61041-
Q1) Internal Switch Current
• Up to 1-MHz Switching Frequency
• 28-µA Typical No Load Quiescent Current
• 1-µA Typical Shutdown Current
• Internal Soft Start
• Space-Saving, 5-Pin SOT-23 Package
2 Applications
• Automotive Telematics, eCall, and Tolling
• Infotainment and Clusters
• Advanced Driver Assistance System (ADAS)
• LCD Bias Supplies
• White-LED Supplies for LCD Backlights
• Dual-CELL NiMH/NiCd or Single-CELL Li-Ion
Battery-Powered Systems
• Standard 3.3-V or 5-V to 12-V Conversions
V_IN
1.8 V to 6 V
C_IN
4.7 mF
Typical Application Diagram
L1
10 mH
D1
5 _VIN
1
SW
R1
3
FB
V_OUT
V_IN to 28 V
C_FF
C_O
1 mF
4 _EN
2
GND
R2
3 Description
The TPS6104x-Q1 devices are high-frequency boost
converters for automotive applications. The devices
are ideal for generating output voltages up to 28 V
from a pre-regulated low voltage rail, dual-cell
NiMH/NiCd or a single-cell Li-Ion battery, supporting
input voltages from 1.8 V to 6 V.
The TPS6104x-Q1 devices operate with a switching
frequency up to 1 MHz, allowing the use of small
external components such as ceramic as well as
tantalum output capacitors. Combined with the space-
saving, 5-pin SOT-23 package, the TPS6104x-Q1
devices accomplish a small overall solution size. The
TPS61040-Q1 device has an internal 400-mA switch
current limit, while the TPS61041-Q1 device has a
250-mA switch current limit, offering lower output
voltage ripple and allowing the use of a smaller form
factor inductor for lower-power applications.
The TPS6104x-Q1 devices operate in a pulse
frequency modulation (PFM) scheme with constant
peak current control. The combination of low
quiescent current (28 µA typical) and the optimized
control scheme enable operation of the devices at
high efficiencies over the entire load current range.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS6104x-Q1
SOT-23 (5)
2.90 mm × 1.60 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Efficiency vs Output Current
90
88
V_O = 18 V _{VI = 5 V}
86
84
V_I = 3.6 V
82
80
78
V_I = 2.4 V
76
74
72
70
0.1
1
10
100
I_O − Output Current − mA
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.