TPS60500DGSR Datasheet, PDF (1/24 Pages) Texas Instruments – HIGH EFFICIENCY, 250-mA STEP-DOWN CHARGE PUMP

TPS60500, TPS60501
TPS60502, TPS60503
SLVS391B − OCTOBER 2001 − REVISED FEBRUARY 2002
HIGH EFFICIENCY, 250ĆmA
STEPĆDOWN CHARGE PUMP
FEATURES
D Regulated 3.3-V, 1.8-V, 1.5-V, or Adjustable
Output Voltage
D Up to 250-mA Output Current
D 1.8-V to 6.5-V Input Voltage
D Up to 90% Efficiency
D Output Voltage Tolerance 3% Over Line, Load,
and Temperature Variation
D Device Quiescent Current Less Than 40 µA
D Output Voltage Supervisor Included
(Power Good)
D Internal Soft Start
D Load Isolated From Battery During Shutdown
D Overtemperature and Overcurrent Protected
D Micro-Small 10-Pin MSOP Package
D EVM Available, TPS60500EVM-193
APPLICATIONS
D Personal Digital Assistants
D DSP Core Supply
D Cellular Phones
D Portable Instruments
D Internet Audio Player
D PC Peripherals
D USB Powered Applications
DESCRIPTION
The TPS6050x devices are a family of step-down
charge pumps that generate a regulated, fixed 3.3-V,
1.8-V, 1.5-V, or adjustable output voltage. Only four
small ceramic capacitors are required to build a
complete high efficiency dc/dc charge pump converter.
To achieve the high efficiency over a wide input voltage
range, the charge pump automatically selects between
three different conversion modes. The output can
deliver a maximum of 250-mA output current. The
power good function supervises the output voltage and
goes high when the output voltage rises to 97% of its
nominal value.
Typical Application Circuit
C1F
1 µF
C2F
1 µF
INPUT
Li-ion cell
Ci
2.2 µF
OFF/ON
8 63 4
C1F− C1F+ C2F− C2F+
5 _VIN
7
OUT
TPS60502
10
FB
1 _EN
GND
9
2
PG
1.8 V
150 mA
+ _Co
10 µF
R
TPS60503
EFFICIENCY
vs
INPUT VOLTAGE
100
100 mA
90
50 mA
80
70
60
150 mA
50
LDO
40
30
20
10
0
2 2.5 3 3.5 4 4.5 5 5.5 6 6.5
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.
Copyright  2002, Texas Instruments Incorporated
www.ti.com
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