TPS62100 Datasheet, PDF (1/23 Pages) Texas Instruments – MULTIMODE LOW POWER BUCK CONVERTER

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TPS62100, TPS62101, TPS62102, TPS62103
MULTIMODE LOWĆPOWER BUCK CONVERTER
SLUS446B – MAY 2000 – REVISED DECEMBER 2000
D 2.5-V to 9-V Input Range
D 0.8-V to 8-V Output Range
D Dual-Auto-Mode for High-Efficiency
at Light Loads
D Externally Synchronizable
D 0% to 100% Duty Cycle
D Low-Quiescient, Standby,
and Shutdown Currents
D 8-Pin SOIC Package
D Four PWM Frequency
Versions (Maximum 2 MHz)
description
applications
X
D Cellular Telephones
D Satellite Telephones
D GPS Devices
D Digital Still Cameras
D PDAs and Handheld Cameras
D PACKAGE
(TOP VIEW)
VIN
1
8
SW
SD/SYNC
2
7
PGND
MODE
3
6
FB
AGND
4
5
COMP
The TPS6210x family of low-power high-efficiency buck converters is designed to operate from 1 or 2 li-ion
cell battery packs. This part, with its wide input range of 2.5 V to 9 V, has an adjustable output from 0.8 V to
8 V and is capable of 500-mA output current. The TPS6210x family of synchronizable dc-to-dc converters is
available in four different operating frequencies: 300 kHz, 600 kHz, 1 MHz, and 2 MHz. The circuit can be
allowed to run at a fixed frequency, or sychronized, using the dual function SD/SYNC input pin.
The TPS6210x family is highly efficient at both low and high output currents. The tri-function MODE input pin
is used to select constant-frequency, auto-mode, or light-load modes of operation. The multimode operation
allows the IC to select the most efficient operating mode, or if desirable, the user can determine which of three
modes to operate in. In the auto-mode, the output load detector circuitry determines if the converter should be
running in the constant-frequency, heavy-load mode, or pulsed-variable frequency, light-load mode.
The TPS6210x family also has a shutdown mode for optimum battery shelf life. The IC utilizes three methods
of overload protection, including thermal shutdown and two levels of overcurrent protection. The TPS6210x is
available in the small outline 8-pin SOIC package.
typical application (automatic mode switcher)
TPS62102
1 VIN
SW 8
C1
+
1.0 µ F
LI–ION
2 SD/SYNC PGND 7
+
LI–ION
3 MODE
FB 6
4 AGND
COMP 5
L1
15 µ H
D1
10BQ040
C4
10 µ F
MLC
OUT 3.3 V
0 mA TO 500 mA
R1
1 kΩ
R4
30 kΩ
C2
1 nF
R2
113 kΩ
C3
100 pF
R3
36 kΩ
UDG–00059
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 © 2000, Texas Instruments Incorporated
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