TPS61046_15 Datasheet, PDF (1/25 Pages) Texas Instruments – TPS61046 28-V Output Voltage Boost Converter in WCSP Package

Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
TPS61046
SLVSCQ7 – APRIL 2015
TPS61046 28-V Output Voltage Boost Converter in WCSP Package
1 Features
•1 Input Voltage Range: 1.8 V to 5.5 V, 1.6 V after
Startup
• Output Voltage Up to 28 V
• Integrated Power Diode and Isolation Switch
• 900-mA (typical) Switch Current
• Up to 85% Efficiency at 3.6-V Input and 12-V
Output
• 500-nA Ultra-low Shutdown Current
• ±2% Output Voltage Accuracy
• Power Save Operation Mode at Light Load
• Internal 10-ms Soft Start Time
• True Disconnection between Input and Output
during Shutdown
• Output Short Circuit Protection
• Output Over-Voltage Protection
• Thermal Shutdown Protection
• 0.80-mm × 1.20-mm WCSP package
2 Applications
• PMOLED Power Supply
• Wearable Devices
• Portable Medical Equipment
• Sensor Power Supply
3 Description
The TPS61046 is a highly integrated boost converter
designed for applications requiring high voltage and
tiny solution size such as PMOLED panel and sensor
module. The TPS61046 integrates a 30-V power
switch, input/output isolation switch, and power diode.
It can output up to 28 V from input of a Li+ battery or
two cell alkaline batteries in series.
The TPS61046 operates with a switching frequency
at 1.0 MHz. This allows the use of small external
components. The TPS61046 has an internal default
12-V output voltage setting by connecting the FB pin
to the VIN pin. Thus it only needs three external
components to get 12-V output voltage. Together with
WCSP package, the TPS61046 gives a very small
overall solution size. The TPS61046 has typical 900-
mA switch current limit. It has 10-ms built-in soft start
time to minimize the inrush current. When the
TPS61046 is in shutdown mode, the isolation switch
disconnects the output from input to minimize the
leakage current. The TPS61064 also implements
output short circuit protection, output over-voltage
protection and thermal shutdown.
The TPS61046 is available in a 6-pin 0.80-mm x
1.20-mm WCSP package.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS61046
WCSP (6)
0.80 mm x 1.20 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
4 Simplified Schematic
1.8 V ~ 5.5 V
L1
C1 _1.02F
102H
VIN
SW
ON
OFF
GND
VOUT
TPS61046
FB
EN
4.5 V ~ 28 V
C2
R1
2.22F
R2
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.