TPS61071-Q1_15 Datasheet, PDF (1/28 Pages) Texas Instruments – Efficient Synchronous Boost Converter

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TPS61071-Q1
SLVSAA5A – MAY 2010 – REVISED DECEMBER 2015
TPS61071-Q1 90% Efficient Synchronous Boost Converter With 600-mA Switch
1 Features
•1 Qualified for Automotive Applications
• AEC-Q100 Qualified With the Following Results:
– Device Temperature Grade 2: –40°C to 105°C
Ambient Operating Temperature Range
– Device HBM Classification Level 1C
– Device CDM Classification Level C6
• 90% Efficient Synchronous Boost Converter
– 75-mA Output Current at 3.3 V From 0.9-V
Input
– 150-mA Output Current at 3.3 V From 1.8-V
Input
• Device Quiescent Current: 19 µA (Typical)
• Input Voltage Range: 0.9 V to 5.5 V
• Adjustable Output Voltage Up to 5.5 V
• Power-Save Mode Version Available for
Improved Efficiency at Low Output Power
• Load Disconnect During Shutdown
• Overtemperature Protection
• Small 6-Pin Thin SOT Package
2 Applications
• Automotive Power Supplies
• Boost Power Supplies
3 Description
The TPS61071-Q1 device provides a power supply
solution for products powered by lower-voltage DC
rails or a one-cell, two-cell, or three-cell alkaline,
NiCd or NiMH, or one-cell Li-ion or Li-polymer
battery. Output currents can go as high as 75 mA,
while using a single-cell alkaline, and discharge down
to 0.9 V. The device can also generate 5 V at 200 mA
from a 3.3-V rail or a Li-ion battery. The boost
converter is based on a fixed frequency, pulse-width-
modulation (PWM) controller using a synchronous
rectifier to obtain maximum efficiency. The maximum
peak current in the boost switch is limited typically to
a value of 600 mA.
The TPS61071-Q1 output voltage is programmed by
an external resistor divider. To minimize battery drain,
disable the converter. During shutdown, the load
disconnects from the battery. The device package is
a 6-pin thin SOT package (DDC).
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS61071-Q1
SOT (6)
1.60 mm × 2.90 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
0.9-V to VO
C1
10 µF
Typical Application Circuit
L1
4.7 µH
SW
VOUT
VBAT
FB
EN
VO
R1
C2
3.3 V up to 100 mA
10 µF
R2
GND
TPS61071-Q1
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.