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SLVS296 − JUNE 2000
D
D
Compact Converter Solution in UltraSmall
10-Pin MSOP With Only Four External
Capacitors Required
features
D
D
Regulated 3.3-V Output Voltage From a
1.8-V to 3.6-V Input Voltage Range
Evaluation Module Available
(TPS60210EVM-167)
UltraLow Operating Current in Snooze
Mode, Typical 2 µA With up to 2-mA Output
Current
applications
D
D
D
D
D
Less Than 5-mV
Achieved With Push-Pull Topology
Output Voltage Ripple
(PP)
D
Replaces DC/DC Converters With Inductors
in Battery-Powered Applications Like:
− Two Battery Cells to 3.3-V Conversion
− MSP430 Ultralow-Power Microcontroller
and Other Battery Powered
Microprocessor Systems
− Glucose Meters and Other Medical
Instruments
Integrated Low-Battery and Power-Good
Detector
Switching Frequency Can Be Synchronized
to External Clock Signal
Extends Battery Usage With up to 90%
Efficiency and 35-µA Quiescent Current
Easy-To-Design, Low Cost, Low EMI Power
Supply Since No Inductors Are Used
− MP3 Portable Audio Players
− Backup-Battery Boost Converters
− Cordless Phones, PDAs
·
description
The TPS6021x step-up, regulated charge pumps generate a 3.3-V 4% output voltage from a 1.8-V to 3.6-V
input voltage. These devices are typically powered by two alkaline, NiCd, or NiMH battery cells or by one primary
lithium MnO2 (or similar) coin cell and operate down to a minimum supply voltage of 1.6 V. Continuous output
current is a minimum of 100 mA for the TPS60210 and TPS60211, and 50 mA for the TPS60212 and TPS60213,
all from a 2-V input.
TPS60210
OUTPUT
3.3 V
PEAK OUTPUT CURRENT
vs
INPUT
1.6 V to 3.6 V
TPS60210
5
7
1
IN
OUT
INPUT VOLTAGE
C
o
2.2
350
300
250
R1
R2
C
i
µ
R3
µ
F
2.2
F
LBI
10
LBO
Low Battery
Warning
4
6
8
C1+
C1−
C2+
C2−
C1
3
9
C2
µ
1
F
200
150
100
50
µ
1
F
SNOOZE
GND
ON/OFF
2
Figure 1. Typical Application Circuit With
Low-Battery Warning
0
1.6
2.0
2.4
2.8
3.2
3.6
V − Input Voltage − V
I
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.
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Copyright 2000, Texas Instruments Incorporated
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1
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