TPS62000, TPS62001, TPS62003
TPS62004, TPS62005, TPS62006
TPS62007, TPS62008
www.ti.com ........................................................................................................................................... SLVS294E–SEPTEMBER 2000–REVISED AUGUST 2008
HIGH-EFFICIENCY STEP-DOWN LOW POWER DC-DC CONVERTER
1
FEATURES
•
High-Efficiency Synchronous Step-Down
Converter With Greater Than 95% Efficiency
•
Low-Noise Operation Antiringing Switch and
PFM/PWM Operation Mode
•
•
2 V to 5.5 V Operating Input Voltage Range
•
•
•
Internal Softstart
Adjustable Output Voltage Range From 0.8 V
to VI
50-µA Quiescent Current (TYP)
Available in the 10-Pin Microsmall Outline
Package (MSOP)
•
•
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
•
Evaluation Module Available
Synchronizable to External Clock Signal up to
1 MHz
APPLICATIONS
•
•
•
•
•
•
Low-Power CPUs and DSPs
Cellular Phones
•
•
•
Up to 600 mA Output Current
Organizers, PDAs, and Handheld PCs
MP-3 Portable Audio Players
Digital Cameras
USB-Based DSL Modems and Other Network
Interface Cards
Pin-Programmable Current Limit
High Efficiency Over a Wide Load Current
Range in Power Save Mode
•
100% Maximum Duty Cycle for Lowest
Dropout
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
10 mH
100
90
80
70
60
50
40
30
20
10
0
V = 2 V
I
1
8
V = 0.8 V
O
9
5
V
L
FB
IN
to 5.5 V
to V
I
10 mF
EN
TPS6200x
†
10 mF
10
4
SYNC = Low
6
7
ILIM
PGND
SYNC = High
SYNC
GND
PG
PG
FC
3
2
0.1 mF
†
WithVO ≥1.8 V; C = 10 mF, V <1.8 V; C = 47 mF
o
o
O
V = 3.6 V,
I
V
O
= 2.5 V
0.1
1
10
100
1000
I
O
− Load Current − mA
Figure 1.
Figure 2. Typical Application Circuit for Fixed Output
Voltage Option
1
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 the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2000–2008, Texas Instruments Incorporated