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FDS6690AS 参数 Datasheet PDF下载

FDS6690AS图片预览
型号: FDS6690AS
PDF下载: 下载PDF文件 查看货源
内容描述: 双路同步降压 - 控制器具有Out-of - Audio⑩操作和100mA LDO的用于笔记本系统电源 [Dual-Synchronous, Step-Down Controller with Out-of-Audio™ Operation and 100-mA LDOs for Notebook System Power]
分类和应用: 晶体晶体管开关光电二极管控制器PC
文件页数/大小: 33 页 / 910 K
品牌: TI [ TEXAS INSTRUMENTS ]
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www.ti.com
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SLUS890 – DECEMBER 2008
Dual-Synchronous, Step-Down Controller with Out-of-Audio™ Operation and 100-mA
LDOs for Notebook System Power
1
FEATURES
Wide-Input Voltage Range: 5.5 V to 28 V
Output Voltage Range: 2 V to 5.5 V
Built-in 100-mA 5-V/3.3-V LDO with Switches
Built-in 1% 2-V Reference Output
With/Without Out-of-Audio™ Mode Selectable
Light-Load and PWM only Operation
Internal 1.6-ms Voltage Servo Softstart
Adaptive On-Time Control Architecture with
Four Selectable Frequency Setting
4500 ppm/°C R
DS(on)
Current Sensing
Built-In Output Discharge
Power Good Output
Built-in OVP/UVP/OCP
Thermal Shutdown (Non-latch)
24-Pin QFN (RGE) Package
APPLICATIONS
Notebook Computers
I/O Supplies
System Power Supplies
2
DESCRIPTION
The TPS51123 is a cost effective, dual-synchronous
buck controller targeted for notebook system power
supply solutions. It provides 5-V and 3.3-V LDOs and
requires few external components. The TPS51123
supports high efficiency, fast transient responses and
provides
a
combined
power-good
signal.
Out-of-Audio™ mode light-load operation enables low
acoustic noise at much higher efficiency than
conventional forced PWM operation. Adaptive
on-time D-CAP™ control provides convenient and
efficient operation. The part operates with supply
input voltages ranging from 5.5 V to 28 V and
supports output voltages from 2 V to 5.5 V. The
TPS51123 is available in a 24-pin QFN package and
is specified from -40°C to 85°C ambient temperature
range.
13 kW
VIN
130 kW
10
mF
x 2
6
20 kW
20 kW
220 nF
30 kW
VIN
130 kW
10
mF
x 2
VIN
5.5 V
to
28 V
5
4
3
2
1
VFB2
TONSEL
TRIP2
VREF
VFB1
7
10
mF
0.1
mF
3.3
mF
VO2
3.3 V
330
mF
5.1
W
8
9
VO2
TRIP1
VO1 24
100 kW
VREG5
0.1
mF
5.1
W
3.3
mF
VO1
330
mF
5V
VREG3
VBST2
TPS51123RGE
(QFN-24)
PowerPAD
PGOOD 23
VBST1 22
DRVH1 21
LL1 20
10 DRVH2
11 LL2
12 DRVL2
SKIPSEL
VREG5
17
DRVL1 19
GND
EN0
13
14
15
16
18
VREG5
33
mF
ENC
EN0
VIN
ENC
VIN
UDG-08167
1
2
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.
Out-of-Audio, D-CAP are trademarks of Texas Instruments.
Copyright © 2008, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.