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SLVS294C − SEPTEMBER 2000 − REVISED SEPTEMBER 2003
D
D
D
D
Low-Noise Operation Antiringing Switch
and PFM/PWM Operation Mode
FEATURES
D
High-Efficiency Synchronous Step-Down
Converter With Greater Than 95%
Efficiency
Internal Softstart
50-µA Quiescent Current (TYP)
Available in the 10-Pin Microsmall Outline
Package (MSOP)
D
D
2 V to 5.5 V Operating Input Voltage Range
Adjustable Output Voltage Range From
0.8 V to V
D
Evaluation Module Available
I
D
Fixed Output Voltage Options Available in
0.9 V, 1 V, 1.2 V, 1.5 V, 1.8 V, 1.9 V, 2.5 V, and
3.3 V
D
Available in a Ultra-Small, 12-Pin
NanoStarꢀ (Wafer Chip-Scale) Package
APPLICATIONS
D
D
D
D
Synchronizable to External Clock Signal up
to 1 MHz
D
Low-Power CPUs and DSPs
Cellular Phones
Up to 600 mA Output Current
D
D
D
D
D
Pin-Programmable Current Limit
Organizers, PDAs, and Handheld PCs
MP-3 Portable Audio Players
Digital Cameras
High Efficiency Over a Wide Load Current
Range in Power Save Mode
D
100% Maximum Duty Cycle for Lowest
Dropout
USB-Based DSL Modems and Other
Network Interface Cards
description
The TPS6200x devices are a family of low-noise synchronous step-down dc-dc converters that are ideally
suited for systems powered from a 1-cell Li-ion battery or from a 2- to 3-cell NiCd, NiMH, or alkaline battery. The
TPS6200x operates typically down to an input voltage of 1.8 V, with a specified minimum input voltage of 2 V.
EFFICIENCY
vs
LOAD CURRENT
100
10 µH
V = 2 V
I
to 5.5 V
1
8
V = 0.8 V
O
90
80
70
60
50
40
30
20
10
0
9
5
V
L
FB
IN
to V
I
10 µF
EN
TPS6200x
†
SYNC = Low
10 µF
10
4
6
7
ILIM
PGND
SYNC = High
SYNC
GND
PG
PG
FC
3
2
0.1 µF
V = 3.6 V,
I
O
V
= 2.5 V
†
With V ≥1.8 V; C = 10 µF, V <1.8 V; C = 47 µF
O
o
O
o
0.1
1
10
100
1000
I
O
− Load Current − mA
Figure 1
Figure 2. Typical Application Circuit for Fixed
Output Voltage Option
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 2002−2003, Texas Instruments Incorporated
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ꢥ ꢩ ꢦ ꢥꢞ ꢟꢳ ꢡꢠ ꢤ ꢬꢬ ꢪꢤ ꢢ ꢤ ꢣ ꢩ ꢥ ꢩ ꢢ ꢦ ꢮ
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1
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