參數(shù)資料
型號(hào)： TPS51220RHBTG4
廠商： TEXAS INSTRUMENTS INC
元件分類： 穩(wěn)壓器
英文描述： DUAL SWITCHING CONTROLLER, 333 kHz SWITCHING FREQ-MAX, PQCC32
封裝： 5 X 5 MM, GREEN, PLASTIC, QFN-32
文件頁數(shù)： 1/41頁
文件大?。?/td> 889K
代理商： TPS51220RHBTG4
1
FEATURES
APPLICATIONS
DESCRIPTION
1
2
3
4
24
23
22
21
DRVH2
VIN
VREG3
EN2
DRVH1
V5SW
RF
EN1
TPS51220RHB
(QFN32)
5
6
7
8
20
19
18
17
PGOOD2
SKIPSEL2
CSP2
CSN2
PGOOD1
SKIPSEL1
CSP1
CSN1
9
VFB1
32
SW1
31
VBST1
30
DR
VL1
29
VREG5
28
GND
27
DR
VL2
26
VBST2
25
SW2
10
COMP1
11
FUNC
12
EN
13
VREF2
14
TRIP
15
COMP2
16
VFB2
VO1
5.0V
L1
C22
VBAT
PowerPAD
C02
C01
VREG5
5V/100mA
R23
R13
C11
R11
PGOOD1
EN
EN1
VREG3
3.3V/10mA
Q11
Q12
Q22
Q21
C13
R12
GND
R14
GND
L2
R24
GND
C23
C21
R21
R22
GND
PGOOD2
EN2
VO2
3.3V
C03
R01
PGND
GND
SKIPSEL1
SKIPSEL2
VBAT
VO2
C12
VBAT
VO1
VREG5
C14
PGND
C24
GND
www.ti.com...................................................................................................................................................... SLVS785C – OCTOBER 2007 – REVISED JULY 2009
Fixed Frequency, 99% Duty Cycle Peak Current Mode Notebook System Power Controller
2
Input Voltage Range: 4.5 V to 28 V
Powergood Output for Each Channel
Output Voltage Range: 1 V to 12 V
OCL/OVP/UVP/UVLO Protections
(OVP Disable Option)
Selectable Light Load Operation
(Continuous / Auto Skip / Out-Of-Audio Skip)
Thermal Shutdown (Non-Latch)
Programmable Droop Compensation
Output Discharge Function (Disable Option)
Voltage Servo Adjustable Soft Start
Integrated Boot Strap MOSFET Switch
200 kHz to 1 MHz Fixed Frequency PWM
QFN-32 (RHB)
Selectable Current/D-CAP Mode Architecture
180° Phase Shift Between Channels
Notebook Computer System and I/O Bus
Resistor or Inductor DCR Current Sensing
Point of Load in LCD TV, MFP
The TPS51220 is a dual synchronous buck regulator controller with 2 LDOs. It is optimized for 5-V/3.3-V system
controller, enabling designers to cost effectively complete 2-cell to 4-cell notebook system power supply. The
TPS51220 supports high efficiency, fast transient response and 99% duty cycle operation. It supports supply
input voltage ranging from 4.5 V to 28 V, and output voltages from 1 V to 12 V. Two types of control schemes
can be chosen depending on the application. Peak current mode supports stability operation with lower ESR
capacitor and output accuracy. The D-CAP mode supports fast transient response. The high duty (99%)
operation and the wide input/output voltage range supports flexible design for small mobile PCs and a wide
variety of other applications. The fixed frequency can be adjusted from 200 kHz to 1 MHz by a resistor, and each
channel runs 180° out of phase. The TPS51220 can also synchronize to the external clock, and the interleaving
ratio can be adjusted by its duty. The TPS51220 is available in the 32 pin 5x5 QFN package and is specified
from –40°C to 85°C.
TYPICAL APPLICATION CIRCUIT
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
Out-Of-Audio, D-CAP, PowerPAD are trademarks of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright 2007–2009, 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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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPS51221 制造商:TI 制造商全稱:Texas Instruments 功能描述:Fixed Frequency, 99% Duty Cycle Peak Current Mode Notebook System Power Controller
TPS51221RTVR 功能描述:電流型 PWM 控制器 Fixed Freq Notebook Sys Pwr Dual Cntrlr RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14
TPS51221RTVRG4 功能描述:電流型 PWM 控制器 Fixed Freq Notebook Sys Pwr Cntrlr RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14
TPS51221RTVT 功能描述:電流型 PWM 控制器 Fixed Freq Notebook Sys Pwr Dual Cntrlr RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14
TPS51221RTVTG4 功能描述:電流型 PWM 控制器 Fixed Freq Notebook Sys Pwr Cntrlr RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14
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