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| 型号： | TPS5120QDBTRQ1 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 1.5 A DUAL SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO30 |
| 封装： | PLASTIC, SM8-30 |
| 文件页数： | 1/21页 |
| 文件大小： | 320K |
| 代理商： | TPS5120QDBTRQ1 |
TPS5120Q1
DUAL OUTPUT, TWOPHASE SYNCHRONOUS BUCK DC/DC CONTROLLER
SGLS225B JANUARY 2004 REVISED APRIL 2008
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D Qualified for Automotive Applications
D Independent Dual-Outputs Operate 180°
Out of Phase
D Wide Input Voltage Range: 4.5-V 28-V
D Adjustable Output Voltage Down to 0.9 V
D Pin-Selectable PWM/SKIP Mode for High
Efficiency Under Light Loads
D Synchronous Buck Operation Allows up to
95% Efficiency
D Separate Standby Control and Overcurrent
Protection For Each Channel
D Programmable Short-Circuit Protection
D Low Supply (1 mA) and Shutdown (1 nA)
Current
D Power Good Output
D High-Speed Error Amplifiers
D Sequencing Easily Achieved by Selecting
Softstart Capacitor Values.
D 5-V Linear Regulator Power Internal IC
Circuitry
D 30-Pin TSSOP Packaging
D Gate Leakage Test Passing Level is 50 V
description
The TPS5120 is a dual channel, high-efficiency
synchronous buck controller where the outputs
run 180 degrees out of phase, which lowers the
input current ripple, thereby reducing the input capacitance cost. The PWM/SKIP pin allows the operating mode
to switch from PWM mode to skip mode under light load conditions. The skip mode enables a lower operating
frequency and shortens the pulse width to the low-side MOSFET, increasing the efficiency under light load
conditions. These two modes, along with synchronous-rectifier drivers, dead time, and very low quiescent
current, allow power to be conserved and the battery life to be extended under all load conditions. The 1.5 A
(typical) high-side and low-side MOSFET drivers on-chip are designed to drive less expensive N-channel
MOSFETs. The resistorless current protection and fixed high-side driver voltage simplify the power supply
design and reduce the external parts count. Each channel is independent, offering a separate controller,
overcurrent protection, and standby control. Sequencing is flexible and can be tailored by choosing different
softstart capacitor values. Other features, such as undervoltage lockout, power good, overvoltage,
undervoltage, and programmable short-circuit protection promote system reliability.
ORDERING INFORMATION
{
PACKAGE
}
TA
TSSOP
(DBT)
40
°C to 125°C
TPS5120QDBTRQ1
For the most current package and ordering
information,
see
the
Package
Option
Addendum at the end of this document, or
see the TI web site at http://www.ti.com.
Package drawings, thermal data, and
symbolization
are
available
at
http://www.ti.com/packaging.
Copyright
2008 Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
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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INV1
FB1
SOFTSTART1
PWM/SKIP
CT
5V_STBY
GND
REF
STBY1
STBY2
FLT
POWERGOOD
SOFTSTART2
FB2
INV2
LH1
OUT1_u
LL1
OUT1_d
OUTGND1
TRIP1
VCC
TRIP2
VREF5
REG5V_IN
OUTGND2
OUT2_d
LL2
OUT2_u
LH2
DBT PACKAGE
(TOP VIEW)
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| TPS5120QDBTRQ1G4 | 功能描述:DC/DC 开关控制器 Dual Out 2Ph Synch Buck DC/DC Cntrlr RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
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| TPS51211DSCR | 功能描述:DC/DC 开关控制器 Hi-Perf,Single Synch Step-Down Controller RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
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