TPS61089 Datasheet, PDF (1/29 Pages) Texas Instruments – TPS61089x 12.6-V, 7-A Fully-Integrated Synchronous Boost Converters in 2.0-mm x 2.5-mm VQFN Package

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TPS61089, TPS610891
SLVSD38B – NOVEMBER 2015 – REVISED JULY 2016
TPS61089x 12.6-V, 7-A Fully-Integrated Synchronous Boost Converters
in 2.0-mm x 2.5-mm VQFN Package
1 Features
•1 Input Voltage Range: 2.7 V to 12 V
• Output Voltage Range: 4.5 V to 12.6 V
• Up to 90% Efficiency at V_IN = 3.3 V, V_OUT = 9 V,
and I_OUT = 2 A
• Resistor-Programmable Peak Current Limit up to
10 A for high pulse current
• Adjustable Switching Frequency: 200 kHz to 2.2
MHz
• 4-ms Built-in Soft Start Time
• PFM Operation Mode at Light Load (TPS61089)
• Forced PWM Operation Mode at Light Load
(TPS610891)
• Internal Output Overvoltage Protection at 13.2 V
• Cycle-by-Cycle Overcurrent Protection
• Thermal Shutdown
• 2.00-mm × 2.50-mm VQFN Hotrod Package
2 Applications
• Bluetooth™ Speaker
• Quick Charge Power Bank
• Portable POS Terminal
• E-Cigarette
3 Description
The TPS61089x represents the TPS61089 and the
TPS610891. The TPS61089x is a fully-integrated
synchronous boost converter with a 19-mΩ main
power switch and a 27-mΩ rectifier switch. The
device provides a high efficiency and small size
power solution for portable equipment. The
TPS61089x features wide input voltage range from
2.7 V to 12 V to support applications powered with
single cell or two cell Lithium ion/polymer batteries.
The TPS61089x has 7-A continuous switch current
capability and provides output voltage up to 12.6 V.
The TPS61089x uses adaptive constant off-time peak
current control topology to regulate the output
voltage. In moderate to heavy load condition, the
TPS61089x works in the pulse width modulation
(PWM) mode. In light load condition, the TPS61089
works in the pulse frequency modulation (PFM) mode
to improve the efficiency, while the TPS610891 still
works in the PWM mode to avoid application
problems caused by low switching frequency. The
switching frequency in the PWM mode is adjustable
from 200 kHz to 2.2 MHz. The TPS61089x also
implements a built-in 4-ms soft start function and an
adjustable peak switch current limit function. In
addition, the device provides 13.2-V output
overvoltage protection, cycle-by-cycle overcurrent
protection, and thermal shutdown protection.
The TPS61089x is available in an extremely compact
size of a 2.0-mm × 2.5-mm 11-pin VQFN package.
Device Information ⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS61089x
VQFN (11)
2.00 mm × 2.50 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Typical Application Circuit
VIN
C1
L1
R3
SW
C4
BOOT
FSW
VOUT
GND
VOUT
C2
R1
OFF
ON
C3
VIN
EN
VCC
FB
COMP
ILIM
R2
C6
R5
R4
C5
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. UNLESS OTHERWISE NOTED, this document contains PRODUCTION
DATA.