TPS60400-Q1_16 Datasheet, PDF (1/29 Pages) Texas Instruments – UNREGULATED 60-mA CHARGE PUMP VOLTAGE INVERTER

TPS60400ĆQ1, TPS60401ĆQ1, TPS60402ĆQ1, TPS60403ĆQ1
UNREGULATED 60ĆmA CHARGE PUMP VOLTAGE INVERTER
features
D Qualified for Automotive Applications
D Inverts Input Supply Voltage
D Up to 60-mA Output Current
D Only Three Small 1-µF Ceramic Capacitors
Needed
D Input Voltage Range From 1.6 V to 5.5 V
D PowerSave-Mode for Improved Efficiency
at Low Output Currents (TPS60400)
D Device Quiescent Current Typical 100 µA
D Integrated Active Schottky-Diode for
Start-Up Into Load
D Small 5-Pin SOT23 Package
D Evaluation Module Available
TPS60400EVM−178
SGLS246A − JUNE 2004 − REVISED JUNE 2008
applications
D LCD Bias
D GaAs Bias for RF Power Amps
D Sensor Supply in Portable Instruments
D Bipolar Amplifier Supply
DBV PACKAGE
(TOP VIEW)
OUT
1
5
CFLY+
IN
2
CFLY−
3
4
GND
description
The TPS6040x is a family of devices that generate an unregulated negative output voltage from an input voltage
ranging from 1.6 V to 5.5 V. The devices are typically supplied by a preregulated supply rail of 5 V or 3.3 V. Due
to its wide input voltage range, two or three NiCd, NiMH, or alkaline battery cells, as well as one Li-Ion cell can
also power them.
Only three external 1-µF capacitors are required to build a complete dc/dc charge pump inverter. Assembled
in a 5-pin SOT23 package, the complete converter can be built on a 50-mm² board area. Additional board area
and component count reduction is achieved by replacing the Schottky diode that is typically needed for start-up
into load by integrated circuitry.
The TPS6040x can deliver a maximum output current of 60 mA with a typical conversion efficiency of greater
than 90% over a wide output current range. Three device options with 20-kHz, 50-kHz, and 250-kHz fixed
frequency operation are available. One device comes with a variable switching frequency to reduce operating
current in applications with a wide load range and enables the design with low-value capacitors.
AVAILABLE OPTIONS^{
PART NUMBER
MARKING DBV
PACKAGE^}
TYPICAL FLYING CAPACITOR
[mF]
FEATURE
TPS60400QDBVRQ1
AWP
1
Variable switching frequency
50 kHz−250 kHz
TPS60401QDBVRQ1
AWQ
10
Fixed frequency 20 kHz
TPS60402QDBVRQ1
AWR
3.3
Fixed frequency 50 kHz
TPS60403QDBVRQ1
AWS
1
Fixed frequency 250 kHz
† _{For the most current package and ordering information, see the Package Option Addendum at the end of this document, or}
see the TI web site at http://www.ti.com.
‡ _{Package drawings, thermal data, and symbolization are available at http://www.ti.com/packaging.}
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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Copyright  2008, Texas Instruments Incorporated
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