TPS63036 Datasheet, PDF (1/23 Pages) Texas Instruments – HIGH-EFFICIENCY SINGLE INDUCTOR BUCK-BOOST CONVERTER In Tiny WCSP

TPS63036
www.ti.com
SLVSB76 – AUGUST 2012
HIGH-EFFICIENCY SINGLE INDUCTOR BUCK-BOOST CONVERTER In Tiny WCSP
Check for Samples: TPS63036
FEATURES
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•2 Input Voltage Range: 1.8V to 5.5V
• Real Buck or Boost operation
• Adjustable and fixed output voltage version
• Up to 94% Efficiency
• Device Quiescent Current less than 50μA
• Fixed and Adjustable Output Voltage Options
• Power Save Mode for Improved Efficiency at
Low Output Power
• Forced Fixed Frequency Operation and
Synchronization Possible
• Load Disconnect During Shutdown
• Over-Temperature Protection
• Available in Small 1.854 mm x 1.076 mm,
WCSP-8 Package
APPLICATIONS
• All Two-Cell and Three-Cell Alkaline, NiCd or
NiMH or Single-Cell Li Battery Powered
Products
• Portable Audio Players
• PDAs
• Cellular Phones
• Personal Medical Products
• White LEDs
DESCRIPTION
The TPS63036 is a non inverting buck-boost
converter able to provide a regulated output voltage
from an input supply that can be higher or lower than
the output voltage. The buck-boost converter is based
on a fixed frequency, pulse-width-modulation (PWM)
controller using synchronous rectification to obtain
maximum efficiency. At low load currents, the
converter enters Power Save Mode to maintain high
efficiency over a wide load current range. The Power
Save mode can be disabled, forcing the converter to
operate at a fixed switching frequency. The maximum
average current in the switches is limited to a typical
value of 1000 mA. The output voltage is
programmable using an external resistor divider. The
converter can be disabled to minimize battery drain.
During shutdown, the load is disconnected from the
battery. The device is packaged 8-pin WCSP
package measuring 1.854 mm x 1.076 mm (YFG).
V_IN
1.8 V to 5.5 V
C₁
10µF
L₁
1.5µH
L1
L2
VIN
VOUT
EN
R₁
287kΩ
PS/SYNC
GND
FB
R₂
51.1kΩ
TPS63036
Figure 1. Typical Circuit
V_OUT
3.3V/600mA
C₂
3X10µF
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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Buck-Boost Overlap Control is a trademark of Texas Instruments.
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PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2012, Texas Instruments Incorporated