参数资料
型号: TPS54332DDAR
厂商: TEXAS INSTRUMENTS INC
元件分类: 稳压器
英文描述: SWITCHING REGULATOR, 1200 kHz SWITCHING FREQ-MAX, PDSO8
封装: PLASTIC, SOIC-8
文件页数: 1/26页
文件大小: 986K
代理商: TPS54332DDAR
60
65
70
75
80
85
90
95
100
0
0.5
1
1.5
2
2.5
3
3.5
I -OutputCurrent- A
O
Efficiency-%
V
=2.5V
O
V =5V
I
V =12V
I
V =15V
I
PH
VIN
GND
BOOT
VSENSE
COMP
SS
C
SS
D1
VIN
VOUT
EN
TPS54332
C
I
C
BOOT
L
O
C
O
Ren1
R
O2
C
1
C
2
R
3
Ren2
R
O1
www.ti.com
SLVS875A – JANUARY 2009 – REVISED MARCH 2010
3.5A, 28V, 1MHz, STEP DOWN SWIFT DC/DC CONVERTER WITH Eco-mode
Check for Samples: TPS54332
1
FEATURES
APPLICATIONS
Consumer Applications such as Set-Top
2
3.5V to 28V Input Voltage Range
Boxes, CPE Equipment, LCD Displays,
Adjustable Output Voltage Down to 0.8V
Peripherals, and Battery Chargers
Integrated 80 m
High Side MOSFET Supports
Industrial and Car Audio Power Supplies
up to 3.5A Continuous Output Current
5V, 12V and 24V Distributed Power Systems
High Efficiency at Light Loads with a Pulse
Skipping Eco-mode
DESCRIPTION
Fixed 1MHz Switching Frequency
The TPS54332 is a 28 V, 3.5 A non-synchronous
Typical 1mA Shutdown Quiescent Current
buck converter that integrates a low RDS(on) high side
Adjustable Slow Start Limits Inrush Currents
MOSFET. To increase efficiency at light loads, a
pulse skipping Eco-mode feature is automatically
Programmable UVLO Threshold
activated. Furthermore, the 1 mA shutdown supply
Overvoltage Transient Protection
current allows the device to be used in battery
Cycle by Cycle Current Limit, Frequency Fold
powered applications. Current mode control with
Back and Thermal Shutdown Protection
internal slope compensation simplifies the external
compensation calculations and reduces component
Available in Thermally Enhanced 8-Pin SOIC
count while allowing the use of ceramic output
PowerPAD Package
capacitors. A resistor divider programs the hysteresis
Supported by SwitcherPro Software Tool
of the input under-voltage lockout. An overvoltage
transient protection circuit limits voltage overshoots
during startup and transient conditions. A cycle by
cycle current limit scheme, frequency fold back and
For SWIFT Documentation, See the TI
thermal shutdown protect the device and the load in
Website at www.ti.com/swift
the event of an overload condition. The TPS54332 is
available in an 8-pin SOIC PowerPAD package.
SIMPLIFIED SCHEMATIC
EFFICIENCY
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.
2
SWIFT, Eco-mode, PowerPAD, SwitcherPro are trademarks of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright 2009–2010, 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.
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