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| 型号： | TPS65055RSMR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 1.8 A DUAL SWITCHING CONTROLLER, 2475 kHz SWITCHING FREQ-MAX, PQCC32 |
| 封装： | 4 X 4 MM, GREEN, PLASTIC, QFN-32 |
| 文件页数： | 1/41页 |
| 文件大小： | 1276K |
| 代理商： | TPS65055RSMR |
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1
FEATURES
DESCRIPTION
APPLICATIONS
www.ti.com.......................................................................................................................................................................................... SLVS844 – SEPTEMBER 2008
2.25 MHz Dual Step-Down Converter With 4 Low Input Voltage LDOs
2
Up to 95% Efficiency
Output Current for DCDC Converters 2 × 0.6A
The TPS65055 is an integrated Power Management
IC
for
applications
powered
by
one
Li-Ion
or
Two Selectable Fixed Output Voltages 1.0
Li-Polymer cell, which require multiple power rails.
V/1.2 V for DCDC2
The
TPS65055
provides
two
highly
efficient,
V
IN Range for DCDC Converters From 2.5 V to
2.25 MHz step-down converters targeted at providing
6 V
the core voltage and I/O voltage in a processor-based
2.25 MHz Fixed Frequency Operation
system. Both step-down converters enter a low power
Power Save Mode at Light Load Current
mode at light load for maximum efficiency across the
widest possible range of load currents.
180° Out of Phase Operation
Output Voltage Accuracy in PWM Mode ±1%
For low noise applications the device can be forced
into fixed frequency PWM mode using the I2C
Low Ripple PFM Mode
compatible interface. In shutdown mode, current
Total Typ. 32 A Quiescent Current for Both
consumption is reduced to less than 1
A.
DCDC Converters
The device allows the use of small inductors and
100% Duty Cycle for Lowest Dropout
capacitors to achieve a small solution size.
2 General Purpose 400 mA- High PSRR LDOs
The TPS65055 provides an output current of up to
2 General Purpose 200 mA- High PSRR LDOs
0.6 A on each dcdc converter.
V
IN Range for LDOs from 1.5 V to 6.5 V
The TPS65055 also integrates two 400 mA LDO and
Digital Voltage Selection for the LDOs
two 200 mA LDO voltage regulators, which can be
I2C Compatible Interface
turned on/off using separate enable pins on each
LDO. Each LDO operates with an input voltage range
Available in a 4 mm × 4 mm 32-Pin QFN
between 1.5 V and 6.5 V allowing them to be
Package
supplied from one of the step-down converters or
directly from the main battery. Two digital input pins
are used to set the output voltage of the LDOs from a
Cell Phones, Smart-phones
set of 9 different combinations for LDO1 to LDO4.
WLAN
Additionally, the converters can be controlled by an
I2C compatible interface.
PDAs, Pocket PCs
OMAP and Low Power DSP Supply
The TPS65055 is available in a small 32-pin leadless
XScale
package (4 mm × 4 mm QFN) with a 0,4 mm pitch.
Portable Media Players
Digital Cameras
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
OMAP, PowerPAD are trademarks of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright 2008, 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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相关代理商/技术参数 |
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| TPS65055RSMRG4 | 功能描述:PMIC 解决方案 Dual buck w/ 4LDO & I2C RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
| TPS65055RSMT | 功能描述:PMIC 解决方案 Dual buck w/ 4LDO & I2C RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
| TPS65055RSMTG4 | 功能描述:PMIC 解决方案 Dual buck w/ 4LDO & I2C RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
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| TPS65056RSMR | 功能描述:PMIC 解决方案 6Ch Pwr Mgmt IC RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
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