Datasheet
TPS62111
EfficiencyvsOutputCurrent
100
0
90
70
40
20
80
50
60
30
10
0.0001 0.001 0.01 0.1 10
1
I -OutputCurrent- A
O
Efficiency-%
5V
4.2V
12V
8.4V
V =3.3V
T
PFMMode
O
A
=25 C
o
SYNC
GND PGND
SW
V
O
=3.3V
6.8 Hm
C =22 F
6.3V
O
m
VIN
LBI
C =10 F
25V
I
m
1 Fm
V =3.8Vto17V
I
VIN
EN
VINA
PGNDGND PwPD
AGND
TPS62111
SW
LBO
PG
1MW
FB
TPS62110, TPS62111
TPS62112, TPS62113
www.ti.com
SLVS585C –JULY 2005–REVISED OCTOBER 2012
17-V, 1.5-A, SYNCHRONOUS STEP-DOWN CONVERTER
Check for Samples: TPS62110, TPS62111, TPS62112, TPS62113
1
FEATURES
DESCRIPTION
The TPS6211x devices are a family of low-noise
• High-Efficiency Synchronous Step-Down
synchronous step-down dc-dc converters that are
Converter With up to 95% Efficiency
ideally suited for systems powered from a 2 to 4-cell
• 3.1-V to 17-V Operating Input Voltage Range
Li-ion battery or from a 12-V or 15-V rail.
• Adjustable Output Voltage Range From
The TPS6211x is a synchronous PWM converter with
1.2 V to 16 V
integrated N- and P-channel power MOSFET
• Fixed Output Voltage Options Available in
switches. Synchronous rectification is used to
3.3 V and 5 V
increase efficiency and to reduce external component
count. To achieve highest efficiency over a wide load-
• Synchronizable to External Clock Signal up to
current range, the converter enters a power-saving,
1.4 MHz
pulse-frequency modulation (PFM) mode at light load
• Up to 1.5-A Output Current
currents. Operating frequency is typically 1 MHz,
• High Efficiency Over a Wide Load-Current
allowing the use of small inductor and capacitor
values. The device can be synchronized to an
Range Due to PFM/PWM Operation Mode
external clock signal in the range of 0.8 MHz to
• 100% Maximum Duty Cycle for Lowest
1.4 MHz. For low-noise operation, the converter can
Dropout
be operated in PWM-only mode. In the shutdown
• 20-µA Quiescent Current (Typical)
mode, the current consumption is reduced to less
than 2 µA. The TPS6211x is available in the 16-pin
• Overtemperature and Overcurrent Protected
(RSA) QFN package, and operates over a free-air
• Available in 16-Pin QFN Package
temperature range of –40°C to 85°C.
APPLICATIONS
• Point-of-Load Regulation From 12-V Bus
• Organizers, PDAs, and Handheld PCs
• Handheld Scanners
TYPICAL APPLICATION
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.
Copyright © 2005–2012, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.