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TPS60212 Datasheet(PDF) 1 Page - Texas Instruments

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No. de Pieza. TPS60212
Descripción  REGULATED 3.3V LOW RIPPLE CHARGE PUMP WITH ULTRA LOW OPERATING CURRENT
Descarga  21 Pages
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Fabricante  TI [Texas Instruments]
Página de inicio  http://www.ti.com
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TPS60212 Datasheet(HTML) 1 Page - Texas Instruments

 
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TPS60210, TPS60211, TPS60212, TPS60213
REGULATED 3.3 V, LOW RIPPLE CHARGE PUMP
WITH ULTRALOW OPERATING CURRENT
SLVS296 − JUNE 2000
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
features
D Regulated 3.3-V Output Voltage From a
1.8-V to 3.6-V Input Voltage Range
D UltraLow Operating Current in Snooze
Mode, Typical 2
µA With up to 2-mA Output
Current
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 Current
D Easy-To-Design, Low Cost, Low EMI Power
Supply Since No Inductors Are Used
D Compact Converter Solution in UltraSmall
10-Pin MSOP With Only Four External
Capacitors Required
D Evaluation Module Available
(TPS60210EVM-167)
applications
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
− 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.
Figure 1. Typical Application Circuit With
Low-Battery Warning
OUTPUT
3.3 V
INPUT
1.6 V to 3.6 V
ON/OFF
C1
1
µF
C2
1
µF
Co
2.2
µF
Ci
2.2
µF
R1
R2
1
2
3
4
5
6
7
8
9
10
R3
Low Battery
Warning
IN
C1−
C1+
LBI
TPS60210
OUT
C2−
C2+
LBO
GND
SNOOZE
TPS60210
PEAK OUTPUT CURRENT
vs
INPUT VOLTAGE
150
100
50
0
1.6
2.0
2.4
2.8
200
250
350
3.2
3.6
300
VI − Input Voltage − V
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.


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