TPS61000, TPS61001, TPS61002, TPS61003, TPS61004, TPS61005, TPS61006

SINGLE-CELL BOOST CONVERTER WITH START-UP INTO FULL LOAD

SLVS279A – MARCH 2000 – REVISED MAY 2000

1

POST OFFICE BOX 655303

Voltages as Low as 0.9 V Over Full

Temperature Range

0.8 V Supply Voltage

up to 90%

at Low Output Currents

Low-Battery Comparator

Switch Across Inductor)

(TPS6100xEVM–156)

– Single- and Dual-Cell Battery Operated

Products

– MP3-Players and Wireless Headsets

– Pagers and Cordless Phones

– Portable Medical Diagnostic Equipment

– Remote Controls

·

description

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. 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.

5

6

TPS61006

9

8

1

10

3

2

7

4

SW

VBAT

LBI

NC

EN

VOUT

LBO

FB

COMP

GND

Low Battery

Warning

R4

10 k

Ω

R3

ON

OFF

R2

R1

Ci

10

µF

L1

D1

VO = 3.3 V

C1

100 pF

C2

33 nF

Co

22

µF

33

µH

2

02

4

6

8

10

12

3

TPS61006

START UP TIMING INTO 33

Ω LOAD

14

16

18

20

1

0

VOUT

EN

IOUT

80

60

20

100

120

140

0

40

time – ms

TYPICAL APPLICATION CIRCUIT FOR FIXED

OUTPUT VOLTAGE OPTION

Copyright

© 2000, Texas Instruments Incorporated

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.