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TPS786

更新时间： 2024-11-16 11:06:39
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德州仪器 - TI 电源电路线性稳压器IC
页数 文件大小 规格书
21页 753K
描述
具有使能功能的 1.5A、低压降稳压器

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TPS786 数据手册

 浏览型号TPS786的Datasheet PDF文件第2页浏览型号TPS786的Datasheet PDF文件第3页浏览型号TPS786的Datasheet PDF文件第4页浏览型号TPS786的Datasheet PDF文件第5页浏览型号TPS786的Datasheet PDF文件第6页浏览型号TPS786的Datasheet PDF文件第7页 
TPS786xx  
www.ti.com  
SLVS389G–SEPTEMBER 2002–REVISED JULY 2006  
ULTRALOW-NOISE, HIGH-PSRR, FAST, RF, 1.5-A  
LOW-DROPOUT LINEAR REGULATORS  
FEATURES  
DESCRIPTION  
•
1.5-A Low-Dropout Regulator With Enable  
The TPS786xx family of low-dropout (LDO)  
low-power linear voltage regulators features high  
power-supply rejection ratio (PSRR), ultralow noise,  
fast start-up, and excellent line and load transient  
responses in small outline, SOT223-6 and DDPAK-5  
packages. Each device in the family is stable, with a  
small 1-µF ceramic capacitor on the output. The  
family uses an advanced, proprietary BiCMOS  
fabrication process to yield extremely low dropout  
voltages (for example, 390 mV at 1.5 A). Each  
device achieves fast start-up times (approximately 50  
•
Available in Fixed and Adjustable (1.2-V to  
5.5-V) Output Versions  
•
•
•
•
•
•
High PSRR (49 dB at 10 kHz)  
Ultralow Noise (48 µVRMS, TPS78630)  
Fast Start-Up Time (50 µs)  
Stable With a 1-µF Ceramic Capacitor  
Excellent Load/Line Transient Response  
Very Low Dropout Voltage (390 mV at Full  
Load, TPS78630)  
µs with  
a 0.001 µF bypass capacitor) while  
consuming very low quiescent current (265 µA,  
typical). Moreover, when the device is placed in  
standby mode, the supply current is reduced to less  
than 1 µA. The TPS78630 exhibits approximately 48  
µVRMS of output voltage at 3.0 V output noise with a  
0.1 µF bypass capacitor. Applications with analog  
components that are noise sensitive, such as  
portable RF electronics, benefit from the high PSRR,  
low noise features, and the fast response time.  
•
6-Pin SOT223 and 5-Pin DDPAK Package  
APPLICATIONS  
•
•
•
•
•
RF: VCOs, Receivers, ADCs  
Audio  
Bluetooth®, Wireless LAN  
Cellular and Cordless Telephones  
Handheld Organizers, PDAs  
TPS78630  
TPS78630  
DCQ PACKAGE  
SOT223-6  
(TOP VIEW)  
RIPPLE REJECTION  
vs  
OUTPUT SPECTRAL NOISE DENSITY  
vs  
FREQUENCY  
FREQUENCY  
1
2
3
4
EN  
IN  
GND  
OUT  
NR/FB  
80  
70  
60  
50  
40  
30  
20  
10  
0
0.8  
0.7  
0.6  
0.5  
0.4  
0.3  
0.2  
0.1  
0.0  
V
= 4 V  
IN  
V
= 5.5 V  
= 2.2 µF  
6
GND  
IN  
C
C
= 10 µF  
C
C
OUT  
= 0.01 µF  
OUT  
= 0.1 µF  
I
= 1 mA  
= 1.5 A  
OUT  
NR  
NR  
5
I
OUT  
KTT PACKAGE  
DDPAK-5  
(TOP VIEW)  
I
= 1 mA  
OUT  
EN  
1
2
IN  
GND  
I
= 1.5 A  
OUT  
TAB  
GND  
3
4
OUT  
1
10  
100  
1k  
10k 100k 1M 10M  
100  
1k  
10k  
100k  
NR/FB  
Frequency (Hz)  
Frequency (Hz)  
5
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.  
Bluetooth is a registered trademark of Bluetooth SIG, Inc.  
All other trademarks are the property of their respective owners.  
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.  
Copyright © 2002–2006, Texas Instruments Incorporated  
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