TPS60200_15 Datasheet, PDF (1/24 Pages) Texas Instruments – REGULATED 3.3 V, 100-mA LOW-RIPPLE CHARGE PUMP LOW POWER DC/DC CONVERTERS

TPS60200, TPS60201, TPS60202, TPS60203
REGULATED 3.3 V, 100-mA LOW-RIPPLE CHARGE PUMP
LOW POWER DC/DC CONVERTERS
SLVS274 – MARCH 2000
features
D Regulated 3.3-V Output Voltage With up to
100-mA Output Current From a 1.8-V to
3.6-V Input Voltage
D Less Than 5-mV_(PP) Output Voltage Ripple
Achieved With Push-Pull Topology
D Integrated Low-Battery and Power-Good
Detector
D Switching Frequency Can Be Synchronized
to External Clock Signal
D Extends Battery Usage With up to 90%
Efficiency and 35-µA Quiescent Supply
Current
D Reliable System Shutdown Because Output
Capacitor Is Discharged When Device Is
Disabled
D Easy-To-Design, Low-Cost, Low-EMI Power
Supply Since No Inductors Are Used
·
D 0.05-µA Shutdown Current, Battery Is
Isolated From Load in Shutdown Mode
D Compact Converter Solution in UltraSmall
10-pin MSOP With Only Four External
Capacitors Required
D Evaluation Module Available
(TPS60200EVM-145)
applications
D Replaces DC/DC Converters With Inductors
in Battery Powered Applications Like:
– Two Battery Cells to 3.3-V Conversion
– MP3 Portable Audio Players
– Battery-Powered Microprocessor
Systems
– Backup-Battery Boost Converters
– PDA’s, Organizers, and Cordless Phones
– Handheld Instrumentation
– Glucose Meters and Other Medical
Instruments
description
The TPS6020x step-up, regulated charge pumps generate a 3.3-V ±4% output voltage from a 1.8-V to 3.6-V
input voltage. The devices are typically powered by two Alkaline, NiCd or NiMH battery cells and operate down
to a minimum supply voltage of 1.6 V. Continuous output current is a minimum of 100 mA for the TPS60200 and
TPS60201 and 50 mA for the TPS60202 and TPS60203, all from a 2-V input. Only four external capacitors are
needed to build a complete low-ripple dc/dc converter. The push-pull operating mode of two single-ended
charge pumps assures the low output voltage ripple as current is continuously transferred to the output.
INPUT
1.6 V to 3.6 V
TPS60200
7
5
IN
OUT
OUTPUT
3.3 V, 100 mA
Ci
2.2 µF
R1
1 _LBI
R2
R3
Co
2.2 µF
350
10
LBO
300
Low Battery
4 _C1+
6
C2+
Warning
250
C1
1 µF
3 _C1–
8
C2–
C2
200
9
EN
1 µF
150
OFF/ON
GND
2
100
TPS60200
PEAK OUTPUT CURRENT
vs
INPUT VOLTAGE
Figure 1. Typical Application Circuit
With Low-Battery Warning
50
0
1.6
2.0
2.4
2.8
3.2
3.6
VI – Input Voltage – V
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.
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
Copyright © 2000, Texas Instruments Incorporated
1