TPS61000_12 Datasheet, PDF (1/26 Pages) Texas Instruments – SINGLE- AND DUAL-CELL BOOST CONVERTER WITH START-UP INTO FULL LOAD

TPS61000, TPS61001, TPS61002, TPS61003, TPS61004, TPS61005, TPS61006, TPS61007
SINGLE- AND DUAL-CELL BOOST CONVERTER WITH START-UP INTO FULL LOAD
D Start-Up Into a Full Load With Supply
Voltages as Low as 0.9 V Over Full
Temperature Range
D Minimum 100-mA Output Current From
0.8-V Supply Voltage, 250 mA From 1.8 V
D High Power Conversion Efficiency,
up to 90%
D Power-Save Mode for Improved Efficiency
at Low Output Currents
D Device Quiescent Current Less Than 50 µA
D Added System Security With Integrated
Low-Battery Comparator
·
description
SLVS279C – MARCH 2000 – REVISED APRIL 2003
D Low-EMI Converter (Integrated Antiringing
Switch Across Inductor)
D Micro-Size 10-Pin MSOP Package
D Evaluation Modules Available
(TPS6100xEVM–156)
D Applications Include:
– Single- and Dual-Cell Battery Operated
Products
– MP3-Players and Wireless Headsets
– Pagers and Cordless Phones
– Portable Medical Diagnostic Equipment
– Remote Controls
The TPS6100x 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 voltage
can be adjusted from 1.5 V to a maximum of 3.3 V and provides a minimum output current of 100 mA from a
single battery cell and 250 mA from two battery cells. The converter starts up into a full load with a supply voltage
of 0.9 V and stays in operation with supply voltages as low as 0.8 V.
The converter is based on a fixed-frequency, current-mode pulse-width-modulation (PWM) controller that goes
into power-save mode at low load currents. The current through the switch is limited to a maximum of 1100 mA,
depending on the output voltage. The current sense is integrated to further minimize external component count.
The converter can be disabled to minimize battery drain when the system is put into standby.
A low-EMI mode is implemented to reduce interference and radiated electromagnetic energy that is caused by
the ringing of the inductor when the inductor discharge-current decreases to zero. The device is packaged in
the space-saving 10-pin MSOP package.
TPS61006
L1
D1
VO = 3.3 V
START-UP TIMING INTO 33-Ω LOAD
Ci ^{33 µH}
10 µF
6 VBAT
7
SW
VOUT 5
Co
22 µF
3
VOUT
140
120
R1
R2
9 LBI
8 NC
ON
OFF
1 EN
LBO 10
TPS61006
FB 3
GND
4
COMP 2
C1
100 pF
R3
Low Battery
Warning
R4
10 kΩ
C2
33 nF
TYPICAL APPLICATION CIRCUIT FOR FIXED
OUTPUT VOLTAGE OPTION
100
2
IOUT
80
60
1
40
20
EN
0
0
0 2 4 6 8 10 12 14 16 18 20
Time – ms
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 include
testing of all parameters.
Copyright  2000–2003, Texas Instruments Incorporated
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
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