TPS61010 Datasheet, PDF (1/25 Pages) Texas Instruments – HIGH-EFFICIENCY, 1-CELL AND 2-CELL BOOST CONVERTERS

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TPS61010, TPS61011
TPS61012, TPS61013
TPS61014, TPS61015, TPS61016
SLVS314C – SEPTEMBER 2000 – REVISED OCTOBER 2003
HIGH-EFFICIENCY, 1-CELL AND 2-CELL BOOST CONVERTERS
FEATURES
• Integrated Synchronous Rectifier for Highest
Power Conversion Efficiency (>95%)
• Start-Up Into Full Load With Supply Voltages
as Low as 0.9 V, Operating Down to 0.8 V
• 200-mA Output Current From 0.9-V Supply
• Powersave-Mode for Improved Efficiency at
Low Output Currents
• Autodischarge Allows to Discharge Output
Capacitor During Shutdown
• Device Quiescent Current Less Than 50 µA
• Ease-of-Use Through Isolation of Load From
Battery During Shutdown of Converter
• Integrated Antiringing Switch Across Inductor
• Integrated Low Battery Comparator
• Micro-Small 10-Pin MSOP Package
• Applications Include All Single- or Dual-Cell
Battery Operated Products Like Internet Audio
Players, Pager, Portable Medical Diagnostic
Equipment, Remote Control, Wireless
Headsets
• EVM Available (TPS6101xEVM-157)
DESCRIPTION
The TPS6101x devices are boost converters intended
for systems that are typically operated from a single- or
dual-cell nickel-cadmium (NiCd), nickel-metal hydride
(NiMH), or alkaline battery. The converter output volt-
age can be adjusted from 1.5 V to a maximum of 3.3 V,
by an external resistor divider or, is fixed internally on
the chip. The devices provide an output current of 200
mA with a supply voltage of only 0.9 V. The converter
starts up into a full load with a supply voltage of only 0.9
V and stays in operation with supply voltages down to
0.8 V.
The converter is based on a fixed frequency, current
mode, pulse-width-modulation (PWM) controller that
goes automatically into power save mode at light load.
It uses a built-in synchronous rectifier, so, no external
Schottky diode is required and the system efficiency is
improved. The current through the switch is limited to a
maximum value of 1300 mA. The converter can be
disabled to minimize battery drain. During shutdown,
the load is completely isolated from the battery.
An autodischarge function allows discharging the out-
put capacitor during shutdown mode. This is especially
useful when a microcontroller or memory is supplied,
where residual voltage across the output capacitor can
cause malfunction of the applications. When program-
ming the ADEN-pin, the autodischarge function can be
disabled. A low-EMI mode is implemented to reduce
interference and radiated electromagnetic energy
when the converter enters the discontinuous conduc-
tion mode. The device is packaged in the micro-small
space saving 10-pin MSOP package.
(TOP VIEW)
EN
1
COMP
2
FB
3
GND
4
VOUT
5
10
LBO
9
LBI
8
ADEN
7
SW
6
VBAT
ACTUAL SIZE
(3,05mm x 4,98mm)
EFFICIENCY
vs
OUTPUT CURRENT
100
VBAT = 2.4 V,
V_O = 3.3 V
90
80
70
60
50
40
0.1
1
10
100
I_O − Output Current − mA
1000
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.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily in-
clude testing of all parameters.
Copyright © 2000 – 2003, Texas Instruments Incorporated