TPS71828-30DRVT [TI]

Dual, 200mA Output, Low Noise, High PSRR Low-Dropout Linear Regulators in 2mm x 2mm SON Package; 双通道, 200mA输出,低噪声,高PSRR低压差线性稳压器,采用2mm x 2mm SON封装
TPS71828-30DRVT
型号: TPS71828-30DRVT
厂家: TEXAS INSTRUMENTS    TEXAS INSTRUMENTS
描述:

Dual, 200mA Output, Low Noise, High PSRR Low-Dropout Linear Regulators in 2mm x 2mm SON Package
双通道, 200mA输出,低噪声,高PSRR低压差线性稳压器,采用2mm x 2mm SON封装

稳压器
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TPS718xx  
TPS719xx  
www.ti.com  
SBVS088AFEBRUARY 2007REVISED MARCH 2007  
Dual, 200mA Output, Low Noise, High PSRR  
Low-Dropout Linear Regulators in 2mm x 2mm SON Package  
FEATURES  
DESCRIPTION  
Dual, 200mA High-Performance LDOs  
The TPS718xx and TPS719xx families of  
low-dropout (LDO) regulators offer high  
a
Low Total Quiescent Current: 90µA with Both  
power-supply rejection ratio (PSRR), low noise, fast  
start-up, and excellent line and load transient  
responses while consuming a very low 90µA (typical)  
at no load ground current with both LDOs enabled.  
The TPS719xx also provides an active pulldown  
circuit to quickly discharge output loads. The  
TPS718xx and TPS719xx are stable with ceramic  
capacitors and use an advanced BiCMOS fabrication  
process to yield a typical dropout voltage of 230mV  
at 200mA output loads. The TPS718xx and  
TPS719xx also use a precision voltage reference  
and feedback loop to achieve 3% overall accuracy  
over all load, line, process, and temperature  
variations. Both families of devices are fully specified  
from TJ = –40°C to +125°C and are offered in a 2mm  
× 2mm SON-6 package that is ideal for applications  
such as mobile handsets and WLAN that require  
good thermal dissipation while maintaining a very  
small footprint.  
LDOs Enabled  
Low Noise: 70µVRMS/V  
Active Output Pulldown (TPS719xx)  
Independent Enables for Each LDO  
PSRR: 65dB at 1kHz, 45dB at 1MHz  
Available in Multiple Fixed-Output Voltage  
Combinations from 0.9V to 3.6V Using  
Innovative Factory EEPROM Programming  
Fast Start-Up Time: 160µs  
Over-Current, Over-Temperature and  
Under-Voltage Protection  
Low Dropout: 230mV at 200mA  
Stable with 1µF Ceramic Output Capacitor  
Available in 2mm × 2mm SON-6 Package  
APPLICATIONS  
Digital Cameras  
Cellular Camera Phones  
Wireless LAN, Bluetooth®  
Handheld Products  
2.7V - 6.5V  
0.9V - 3.6V  
1mF  
TPS718xx, TPS719xx  
DRV Package  
VIN  
VOUT  
IN  
OUT1  
TPS718xx  
TPS719xx  
2mm x 2mm SON  
(TOP VIEW)  
1mF  
On  
OUT1  
IN  
1
2
3
6
5
4
EN1  
GND  
EN2  
EN1  
0.9V - 3.6V  
1mF  
Off  
GND  
VOUT  
OUT2  
OUT2  
On  
EN2  
Off  
GND  
Typical Application Circuit  
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 © 2007, Texas Instruments Incorporated  
TPS718xx  
TPS719xx  
www.ti.com  
SBVS088AFEBRUARY 2007REVISED MARCH 2007  
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with  
appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.  
ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be  
more susceptible to damage because very small parametric changes could cause the device not to meet its published  
specifications.  
ORDERING INFORMATION(1)  
(2)(3)  
PRODUCT  
VOUT  
TPS718xx-yywwwz  
TPS719xx-yywwwz  
XX is nominal output voltage for LDO1 (for example, 28 = 2.8V).  
YY nominal output voltage for LDO2.  
WWW is package designator.  
Z is Tape & Reel quantity (R = 3000, T = 250).  
Examples: TPS71918–285DRVR  
XX = 18 = 1.8V, YYY = 285 = 2.85V  
XXX = 185 = 1.85V, YY = 33 = 3.3V  
DRV = 2mm x 2mm SON package  
Z = R = 3000 piece reel  
TPS719185-33DRVR  
(1) For the most current package and ordering information see the Package Option Addendum at the end of this document, or see the TI  
website at www.ti.com.  
(2) Both outputs are programmable from 0.9V to 3.6V in 50mV increments.  
(3) Output voltages from 0.9V to 3.6V in 50mV increments are available through the use of innovative factory EEPROM programming;  
minimum order quantities may apply. Contact factory for details and availability.  
ABSOLUTE MAXIMUM RATINGS(1)  
Over operating temperature range (unless otherwise noted). All voltages are with respect to GND.  
PARAMETER  
TPS718xx, TPS719xx  
–0.3 to +7.0  
UNIT  
Input voltage range, VIN  
V
V
V
Enable voltage range, VEN1 and VEN2  
Output voltage range, VOUT  
Peak output current  
–0.3 to VIN + 0.3V  
–0.3 to +7.0  
Internally limited  
Indefinite  
Output short-circuit duration  
Junction temperature range, TJ  
Storage temperature range , TSTG  
Total continuous power dissipation, PDISS  
ESD rating, HBM  
–55 to +150  
–55 to +150  
°C  
°C  
See Dissipation Ratings Table  
2
kV  
V
ESD rating, CDM  
500  
(1) Stresses above these ratings may cause permanent damage. Exposure to absolute maximum conditions for extended periods may  
degrade device reliability. These are stress ratings only, and functional operation of the device at these or any other conditions beyond  
those specified is not implied.  
DISSIPATION RATINGS  
DERATING FACTOR  
BOARD  
PACKAGE  
RθJC  
RθJA  
ABOVE TA = +25°C  
TA < +25°C  
TA = +70°C  
TA = +85°C  
High-K(1)  
DRV  
20°C/W  
95°C/W  
10.53mW/°C  
1053mW  
579mW  
421mW  
(1) The JEDEC high-K (2s2p) board used to derive this data was a 3in × 3in, multilayer board with 1-ounce internal power and ground  
planes and 2-ounce copper traces on top and bottom of the board.  
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TPS718xx  
TPS719xx  
www.ti.com  
SBVS088AFEBRUARY 2007REVISED MARCH 2007  
ELECTRICAL CHARACTERISTICS  
Over operating temperature range (TJ = –40°C to +125°C), VIN = VOUT(TYP) + 0.5V or 2.7V, whichever is greater;  
IOUT = 0.5mA, VEN1 = VEN2 = VIN, COUT = 1.0µF, unless otherwise noted. Typical values are at TJ = +25°C.  
PARAMETER  
Input voltage range(1)  
TEST CONDITIONS  
MIN  
2.7  
TYP  
MAX  
6.5  
UNIT  
V
VIN  
VOUT1, VOUT2 Output voltage range  
0.9  
3.6  
V
Nominal  
TJ = +25°C  
±2.5  
mV  
VOUT1, VOUT2 Output accuracy  
Over VIN, IOUT  
Temp  
,
VOUT + 0.5V VIN 6.5V  
0mA IOUT 200mA  
–3.0  
+3.0  
%
VOUT(NOM) + 0.5V VIN 6.5V,  
IOUT = 5mA  
VOUT/ VIN Line regulation  
VOUT/ IOUT Load regulation  
130  
75  
µV/V  
µV/mA  
mV  
0mA IOUT 200mA  
Dropout voltage(2)  
VDO  
IOUT = 200mA  
230  
400  
(VIN = VOUT(NOM) – 0.1V)  
ICL  
Output current limit (per output)  
VOUT = 0.9 × VOUT(NOM)  
IOUT1 = IOUT2 = 0.1mA  
IOUT1 = IOUT2 = 200mA  
240  
340  
90  
575  
160  
mA  
µA  
µA  
IGND  
Ground pin current  
250  
V
EN1,2 0.4V, 2.7V VIN < 4.5V,  
0.3  
1.8  
3.0  
µA  
µA  
TJ = –40°C to +85°C  
ISHDN  
Shutdown current (IGND)  
VEN1,2 0.4V, 4.5V VIN 6.5V,  
TJ = –40°C to +85°C  
f = 100Hz  
63  
63  
72  
58  
44  
dB  
dB  
dB  
dB  
dB  
f = 1kHz  
Power-supply rejection ratio  
VIN = 3.8V, VOUT = 2.8V,  
IOUT = 200mA  
PSRR  
f = 10kHz  
f = 100kHz  
f = 1MHz  
Output noise voltage  
BW = 100Hz to 100kHz  
VN  
70 × VOUT  
160  
µVRMS  
µs  
RL = 14, VOUT = 2.8V,  
COUT = 1.0µF  
TSTR  
TSHUT  
Startup time(3)  
(5)  
Shutdown time(4)  
(TPS719xx only)  
,
RL = , COUT = 1.0µF,  
VOUT = 2.8V  
180  
µs  
V
IN 5.5V  
1.2  
6.5  
6.5  
V
V
Enable high (enabled)  
(EN1 and EN2)  
VEN(HI)  
5.5V < VIN 6.5V  
1.25  
Enable low (shutdown)  
(EN1 and EN2)  
VEN(LO)  
IEN  
0
0.4  
V
Enable pin current, enabled  
(EN1 and EN2)  
EN1 = EN2 = 6.5V  
0.04  
1.0  
µA  
Under-voltage lockout  
Hysteresis  
VIN rising  
2.38  
2.45  
150  
2.52  
V
UVLO  
VIN falling  
mV  
°C  
°C  
°C  
Shutdown, temperature increasing  
Reset, temperature decreasing  
+160  
+140  
TSD  
TJ  
Thermal shutdown temperature  
Operating junction temperature  
–40  
+125  
(1) Minimum VIN = VOUT + VDO or 2.7V, whichever is greater.  
(2) VDO is not measured for devices with VOUT(NOM) < 2.8V because minimum VIN = 2.7V.  
(3) Time from VEN = 1.25V to VOUT = 95% (VOUT(NOM)).  
(4) Time from VEN = 0.4V to VOUT = 5% (VOUT(NOM)).  
(5) See Shutdown section in the Applications Information for more details.  
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TPS718xx  
TPS719xx  
www.ti.com  
SBVS088AFEBRUARY 2007REVISED MARCH 2007  
DEVICE INFORMATION  
TPS719 only  
60W  
Bandgap  
UVLO  
Current  
Limit  
Thermal  
Shutdown  
2.5mA  
OUT1  
OUT2  
EN1  
Enable and  
Power  
Control  
Logic  
EN2  
Thermal  
2.5mA  
Shutdown  
Current  
IN  
Limit  
UVLO  
Bandgap  
60W  
TPS719 only  
GND  
Figure 1. Functional Block Diagram  
DRV PACKAGE  
2mm × 2mm SON  
(TOP VIEW)  
OUT1  
IN  
1
2
3
6
5
4
EN1  
GND  
EN2  
GND  
OUT2  
Table 1. PIN DESCRIPTIONS  
TPS718xx, TPS719xx  
NAME  
OUT1  
IN  
NO.  
DESCRIPTION  
1
2
3
Output of Regulator 1. A small ceramic capacitor (typically 1µF) is needed from this pin to ground to assure stability.  
Input supply to both regulators.  
OUT2  
Output of Regulator 2. A small ceramic capacitor (typically 1µF) is needed from this pin to ground to assure stability.  
Enable pin for Regulator 2. Driving the Enable pin (EN2) high turns on Regulator 2. Driving this pin low puts Regulator 2  
into shutdown mode, reducing operating current.  
EN2  
GND  
EN1  
4
5
6
Ground. Thermal pad should also be connected to ground.  
Enable pin for Regulator 1. Driving the Enable pin (EN1) high turns on Regulator 1. Driving this pin low puts Regulator 1  
into shutdown mode, reducing operating current.  
4
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TPS718xx  
TPS719xx  
www.ti.com  
SBVS088AFEBRUARY 2007REVISED MARCH 2007  
TYPICAL CHARACTERISTICS  
Over operating temperature range (TJ = –40°C to +125°C), VIN = VOUT(TYP) + 0.5V or 2.7V, whichever is greater; IOUT = 0.5mA,  
VEN1 = VEN2 = VIN, COUT = 1.0µF, unless otherwise noted. Typical values are at TJ = +25°C.  
LINE REGULATION  
LINE REGULATION  
4
3
0
-1  
-2  
-3  
-4  
-5  
TJ = +85°C  
IOUT = 5mA  
IOUT = 200mA  
TJ = +125°C  
2
TJ = +25°C  
TJ = -40°C  
1
TJ = +25°C  
0
-1  
-2  
-3  
-4  
TJ = +85°C  
TJ = -40°C  
TJ = +125°C  
2.5  
3.5  
4.5  
5.5  
6.5  
2.5  
3.5  
4.5  
5.5  
6.5  
VIN (V)  
VIN (V)  
Figure 2.  
Figure 3.  
LOAD REGULATION UNDER LIGHT LOADS  
LOAD REGULATION  
4
5
0
TJ = +85°C  
TJ = +25°C  
2
0
-5  
-10  
-15  
-20  
-25  
-30  
-35  
-40  
-2  
-4  
-6  
-8  
-10  
TJ = -40°C  
TJ = +125°C  
TJ = +85°C  
TJ = +25°C  
TJ = -40°C  
TJ = +125°C  
0
1
2
3
4
5
0
50  
100  
150  
200  
IOUT (mA)  
IOUT (mA)  
Figure 4.  
Figure 5.  
OUTPUT VOLTAGE vs  
TEMPERATURE  
DROPOUT VOLTAGE vs  
OUTPUT CURRENT  
2.805  
2.800  
2.795  
2.790  
2.785  
2.780  
2.775  
2.770  
2.765  
2.760  
350  
IOUT = 5mA  
TJ = +125°C  
TJ = +85°C  
300  
250  
200  
150  
100  
50  
IOUT = 0.1mA  
IOUT = 200mA  
TJ = +25°C  
TJ = -40°C  
0
-40 -25 -10  
5
20 35 50 65 80 95 110 125  
0
50  
100  
150  
200  
TJ (°C)  
IOUT (mA)  
Figure 6.  
Figure 7.  
5
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TPS718xx  
TPS719xx  
www.ti.com  
SBVS088AFEBRUARY 2007REVISED MARCH 2007  
TYPICAL CHARACTERISTICS (continued)  
Over operating temperature range (TJ = –40°C to +125°C), VIN = VOUT(TYP) + 0.5V or 2.7V, whichever is greater; IOUT = 0.5mA,  
VEN1 = VEN2 = VIN, COUT = 1.0µF, unless otherwise noted. Typical values are at TJ = +25°C.  
GROUND PIN CURRENT vs  
OUTPUT CURRENT  
GROUND PIN CURRENT vs  
INPUT VOLTAGE  
200  
160  
120  
80  
60  
50  
40  
30  
20  
10  
0
TJ = +125°C  
IOUT = 1mA  
TJ = +25°C  
TJ = +85°C  
TJ = -40°C  
40  
0
0
50  
100  
150  
200  
2.5  
3.5  
4.5  
5.5  
6.5  
IOUT (mA)  
VIN (V)  
Figure 8.  
Figure 9.  
GROUND PIN CURRENT vs  
TEMPERATURE (BOTH LDOs ENABLED)  
SHUTDOWN CURRENT vs  
INPUT VOLTAGE  
140  
120  
100  
80  
5.0  
4.5  
4.0  
3.5  
3.0  
2.5  
2.0  
1.5  
1.0  
0.5  
0
IOUT = 0mA  
TJ = +125°C  
TJ = -40°C  
60  
TJ = +85°C  
40  
TJ = +25°C  
20  
0
-40 -25 -10  
5
20 35 50 65 80 95 110 125  
2.5  
3.5  
4.5  
5.5  
6.5  
TJ (°C)  
VIN (V)  
Figure 10.  
Figure 11.  
CURRENT LIMIT vs  
INPUT VOLTAGE  
POWER-SUPPLY RIPPLE REJECTION vs  
FREQUENCY (VIN– VOUT = 0.5V)  
90  
450  
100mA  
80  
70  
60  
50  
40  
30  
20  
10  
0
425  
400  
375  
350  
325  
300  
275  
250  
5mA  
200mA  
TJ = +125°C  
TJ = +85°C  
TJ = +25°C  
TJ = -40°C  
10  
100  
1k  
10k  
100k  
1M  
10M  
2.5  
3.5  
4.5  
5.5  
6.5  
Frequency (Hz)  
VIN (V)  
Figure 12.  
Figure 13.  
6
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TPS718xx  
TPS719xx  
www.ti.com  
SBVS088AFEBRUARY 2007REVISED MARCH 2007  
TYPICAL CHARACTERISTICS (continued)  
Over operating temperature range (TJ = –40°C to +125°C), VIN = VOUT(TYP) + 0.5V or 2.7V, whichever is greater; IOUT = 0.5mA,  
VEN1 = VEN2 = VIN, COUT = 1.0µF, unless otherwise noted. Typical values are at TJ = +25°C.  
POWER-SUPPLY RIPPLE REJECTION vs  
FREQUENCY (VIN– VOUT = 1V)  
POWER-SUPPLY RIPPLE REJECTION vs  
INPUT VOLTAGE  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
80  
70  
60  
50  
40  
30  
20  
10  
0
100mA  
1kHz  
5mA  
10kHz  
100kHz  
1MHz  
200mA  
VOUT = 2.80V  
IOUT = 5mA  
10  
100  
1k  
10k  
100k  
1M  
10M  
3.0  
3.2  
3.4  
3.6  
3.8  
4.0  
VIN (V)  
Frequency (Hz)  
Figure 14.  
Figure 15.  
POWER-SUPPLY RIPPLE REJECTION vs  
INPUT VOLTAGE  
OUTPUT SPECTRAL NOISE DENSITY vs  
FREQUENCY  
80  
70  
60  
50  
40  
30  
20  
10  
0
10  
VOUT = 2.80V  
10kHz  
1kHz  
1
100kHz  
1MHz  
0.1  
VOUT = 2.80V  
IOUT = 200mA  
0.01  
100  
1k  
10k  
100k  
3.0  
3.2  
3.4  
3.6  
3.8  
4.0  
VIN (V)  
Frequency (Hz)  
Figure 16.  
Figure 17.  
LINE TRANSIENT RESPONSE  
LOAD TRANSIENT RESPONSE  
IOUTmin = 3mA  
dVIN  
6.5V  
dt  
dIOUT  
dt  
= 1V/ms  
= 200mA/ms  
250mA/div  
10mV/div  
IOUT1  
3.3V  
1V/div  
VIN  
VOUT1  
VOUT1  
10mV/div  
10mV/div  
VOUT2  
VOUT2  
10mV/div  
20ms/div  
10ms/div  
Figure 18.  
Figure 19.  
7
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TPS718xx  
TPS719xx  
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SBVS088AFEBRUARY 2007REVISED MARCH 2007  
TYPICAL CHARACTERISTICS (continued)  
Over operating temperature range (TJ = –40°C to +125°C), VIN = VOUT(TYP) + 0.5V or 2.7V, whichever is greater; IOUT = 0.5mA,  
VEN1 = VEN2 = VIN, COUT = 1.0µF, unless otherwise noted. Typical values are at TJ = +25°C.  
TPS719 ENABLE RESPONSE  
POWER-UP/POWER-DOWN  
IOUT = 200mA  
VIN  
6.5V  
0V  
EN1, EN2  
4V/div  
1V/div  
VOUT  
VOUT1  
VOUT2  
1V/div  
1V/div  
40ms/div  
400ms/div  
Figure 20.  
Figure 21.  
8
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TPS718xx  
TPS719xx  
www.ti.com  
SBVS088AFEBRUARY 2007REVISED MARCH 2007  
APPLICATION INFORMATION  
The TPS718xx/TPS719xx belong to a family of new  
generation LDO regulators that use innovative  
circuitry to achieve ultra-wide bandwidth and high  
loop gain, resulting in extremely high PSRR (up to  
1MHz) at very low headroom (VIN – VOUT). These  
features, combined with low noise, two independent  
enables, low ground pin current and ultra-small  
packaging, make this part ideal for portable  
applications. This family of regulators offer  
sub-bandgap output voltages, current limit and  
thermal protection, and is fully specified from –40°C  
to +125°C.  
Board Layout Recommendations to Improve  
PSRR and Noise Performance  
To improve ac performance such as PSRR, output  
noise, and transient response, it is recommended  
that the board be designed with separate ground  
planes for VIN and VOUT, with each ground plane  
connected only at the GND pin of the device. In  
addition, the ground connection for the output  
capacitor should connect directly to the GND pin of  
the device. High ESR capacitors may degrade  
PSRR.  
Figure 22 shows the basic circuit connections.  
Internal Current Limit  
2.7V - 6.5V  
0.9V - 3.6V  
1mF  
The TPS718xx/TPS719xx internal current limits help  
protect the regulator during fault conditions. During  
current limit, the output sources a fixed amount of  
current that is largely independent of output voltage.  
For reliable operation, the device should not be  
operated in a current limit state for extended periods  
of time.  
VIN  
VOUT  
IN  
OUT1  
TPS718xx  
TPS719xx  
1mF  
On  
EN1  
0.9V - 3.6V  
1mF  
Off  
VOUT  
OUT2  
On  
EN2  
The  
PMOS  
pass  
element  
in  
the  
Off  
GND  
TPS718xx/TPS719xx has a built-in body diode that  
conducts current when the voltage at OUT exceeds  
the voltage at IN. This current is not limited, so if  
extended reverse voltage operation is anticipated,  
external limiting to 5% of rated output current may be  
appropriate.  
Figure 22. Typical Application Circuit  
Input and Output Capacitor Requirements  
Shutdown  
Although an input capacitor is not required for  
stability, it is good analog design practice to connect  
a 0.1µF to 1.0µF low equivalent series resistance  
(ESR) capacitor across the input supply near the  
regulator. This capacitor counteracts reactive input  
sources and improves transient response, noise  
The enable pin (EN) is active high and is compatible  
with standard and low voltage, TTL-CMOS levels.  
When shutdown capability is not required, EN can be  
connected to IN. The TPS719 with internal active  
output pulldown circuitry discharges the output with a  
time constant (t) of:  
rejection, and ripple rejection.  
A
higher-value  
capacitor may be necessary if large, fast rise-time  
load transients are anticipated or if the device is  
located close to the power source. If source  
impedance is not sufficiently low, a 0.1µF input  
capacitor may be necessary to ensure stability.  
60 ´ RL  
´ COUT  
t = 3  
60 + RL  
with:  
RL = output load resistance  
COUT = Output capacitance  
The TPS718xx/TPS719xx are designed to be stable  
with standard ceramic capacitors of values 1.0µF or  
larger at the output. X5R- and X7R-type capacitors  
are best because they have minimal variation in  
value and ESR over temperature. Maximum ESR  
should be <1.0.  
Dropout Voltage  
The TPS718xx/TPS719xx use  
transistor to achieve low dropout. When (VIN – VOUT  
a
PMOS pass  
)
is less than the dropout voltage (VDO), the PMOS  
pass device is in its linear region of operation and  
the input-to-output resistance is the RDS(ON) of the  
PMOS pass element. VDO approximately scales with  
output current because the PMOS device behaves  
like a resistor in dropout.  
9
Submit Documentation Feedback  
 
TPS718xx  
TPS719xx  
www.ti.com  
SBVS088AFEBRUARY 2007REVISED MARCH 2007  
As with any linear regulator, PSRR and transient  
response are degraded as (VIN – VOUT) approaches  
dropout. This effect is shown in Figure 13 and  
Figure 14 in the Typical Characteristics section.  
Any tendency to activate the thermal protection  
circuit indicates excessive power dissipation or an  
inadequate heatsink. For reliable operation, junction  
temperature should be limited to +125°C maximum.  
To estimate the margin of safety in a complete  
design (including heatsink), increase the ambient  
temperature until the thermal protection is triggered;  
use worst-case loads and signal conditions. For good  
reliability, thermal protection should trigger at least  
+35°C above the maximum expected ambient  
condition of your particular application. This  
Transient Response  
As with any regulator, increasing the size of the  
output capacitor will reduce over/undershoot  
magnitude but increase duration of the transient  
response.  
configuration produces  
temperature of +125°C at the highest expected  
a
worst-case junction  
Under-Voltage Lock-Out (UVLO)  
ambient temperature and worst-case load.  
The TPS718xx/TPS719xx utilize an under-voltage  
lock-out circuit to keep the output shut off until  
internal circuitry is operating properly. The UVLO  
circuit has a de-glitch feature so that it typically  
ignores undershoot transients on the input if they are  
less than 50µs duration. On the TPS719xx, the  
active pulldown discharges VOUT when the device is  
in UVLO off condition. However, the input voltage  
needs to be greater than 0.8V for active pulldown to  
work.  
The  
internal  
protection  
circuitry  
of  
the  
TPS718xx/TPS719xx has been designed to protect  
against overload conditions. It was not intended to  
replace proper heatsinking. Continuously running the  
TPS718xx/TPS719xx  
into  
thermal  
shutdown  
degrades device reliability.  
Power Dissipation  
The ability to remove heat from the die is different for  
each package type, presenting different  
Minimum Load  
considerations in the printed circuit board (PCB)  
layout. The PCB area around the device that is free  
of other components moves the heat from the device  
to the ambient air. Performance data for JEDEC low-  
and high-K boards are given in the Dissipation  
Ratings table. Using heavier copper increases the  
effectiveness in removing heat from the device. The  
addition of plated through-holes to heat-dissipating  
layers also improves the heatsink effectiveness.  
The TPS718xx/TPS719xx are stable with no output  
load. Traditional PMOS LDO regulators suffer from  
lower loop gain at very light output loads. The  
TPS718xx/TPS719xx  
employ  
an  
innovative,  
low-current mode circuit under very light or no-load  
conditions, resulting in improved output voltage  
regulation performance down to zero output current.  
THERMAL INFORMATION  
Thermal Protection  
Power dissipation depends on input voltage and load  
conditions. Power dissipation (PD) is equal to the  
product of the output current times the voltage drop  
across the output pass element (VIN to VOUT), as  
shown in Equation 1:  
Thermal protection disables the output when the  
junction temperature rises to approximately +160°C,  
allowing the device to cool. When the junction  
temperature cools to approximately +140°C the  
output circuitry is again enabled. Depending on  
power dissipation, thermal resistance, and ambient  
temperature, the thermal protection circuit may cycle  
on and off. This cycling limits the dissipation of the  
regulator, protecting it from damage due to  
overheating.  
PD = (VIN - VOUT) x IOUT  
(1)  
Package Mounting  
Solder pad footprint recommendations for the  
TPS718xx/TPS719xxx are available from the Texas  
Instruments web site at www.ti.com.  
10  
Submit Documentation Feedback  
 
IMPORTANT NOTICE  
Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements,  
improvements, and other changes to its products and services at any time and to discontinue any product or service without notice.  
Customers should obtain the latest relevant information before placing orders and should verify that such information is current and  
complete. All products are sold subject to TI’s terms and conditions of sale supplied at the time of order acknowledgment.  
TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI’s  
standard warranty. Testing and other quality control techniques are used to the extent TI deems necessary to support this  
warranty. Except where mandated by government requirements, testing of all parameters of each product is not necessarily  
performed.  
TI assumes no liability for applications assistance or customer product design. Customers are responsible for their products and  
applications using TI components. To minimize the risks associated with customer products and applications, customers should  
provide adequate design and operating safeguards.  
TI does not warrant or represent that any license, either express or implied, is granted under any TI patent right, copyright, mask  
work right, or other TI intellectual property right relating to any combination, machine, or process in which TI products or services  
are used. Information published by TI regarding third-party products or services does not constitute a license from TI to use such  
products or services or a warranty or endorsement thereof. Use of such information may require a license from a third party under  
the patents or other intellectual property of the third party, or a license from TI under the patents or other intellectual property of TI.  
Reproduction of information in TI data books or data sheets is permissible only if reproduction is without alteration and is  
accompanied by all associated warranties, conditions, limitations, and notices. Reproduction of this information with alteration is an  
unfair and deceptive business practice. TI is not responsible or liable for such altered documentation.  
Resale of TI products or services with statements different from or beyond the parameters stated by TI for that product or service  
voids all express and any implied warranties for the associated TI product or service and is an unfair and deceptive business  
practice. TI is not responsible or liable for any such statements.  
TI products are not authorized for use in safety-critical applications (such as life support) where a failure of the TI product would  
reasonably be expected to cause severe personal injury or death, unless officers of the parties have executed an agreement  
specifically governing such use. Buyers represent that they have all necessary expertise in the safety and regulatory ramifications  
of their applications, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related  
requirements concerning their products and any use of TI products in such safety-critical applications, notwithstanding any  
applications-related information or support that may be provided by TI. Further, Buyers must fully indemnify TI and its  
representatives against any damages arising out of the use of TI products in such safety-critical applications.  
TI products are neither designed nor intended for use in military/aerospace applications or environments unless the TI products are  
specifically designated by TI as military-grade or "enhanced plastic." Only products designated by TI as military-grade meet military  
specifications. Buyers acknowledge and agree that any such use of TI products which TI has not designated as military-grade is  
solely at the Buyer's risk, and that they are solely responsible for compliance with all legal and regulatory requirements in  
connection with such use.  
TI products are neither designed nor intended for use in automotive applications or environments unless the specific TI products  
are designated by TI as compliant with ISO/TS 16949 requirements. Buyers acknowledge and agree that, if they use any  
non-designated products in automotive applications, TI will not be responsible for any failure to meet such requirements.  
Following are URLs where you can obtain information on other Texas Instruments products and application solutions:  
Products  
Amplifiers  
Data Converters  
DSP  
Applications  
Audio  
amplifier.ti.com  
dataconverter.ti.com  
dsp.ti.com  
www.ti.com/audio  
Automotive  
Broadband  
Digital Control  
Military  
www.ti.com/automotive  
www.ti.com/broadband  
www.ti.com/digitalcontrol  
www.ti.com/military  
Interface  
interface.ti.com  
logic.ti.com  
Logic  
Power Mgmt  
Microcontrollers  
power.ti.com  
Optical Networking  
Security  
www.ti.com/opticalnetwork  
www.ti.com/security  
microcontroller.ti.com  
www.ti.com/lpw  
Low Power  
Wireless  
Telephony  
www.ti.com/telephony  
Video & Imaging  
Wireless  
www.ti.com/video  
www.ti.com/wireless  
Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265  
Copyright © 2007, Texas Instruments Incorporated  
PACKAGE OPTION ADDENDUM  
www.ti.com  
18-May-2007  
PACKAGING INFORMATION  
Orderable Device  
Status (1)  
Package Package  
Pins Package Eco Plan (2) Lead/Ball Finish MSL Peak Temp (3)  
Qty  
Type  
SON  
SON  
SON  
SON  
SON  
SON  
SON  
Drawing  
TPS71812-33DRVR  
TPS71812-33DRVT  
TPS71828-30DRVR  
TPS71828-30DRVT  
TPS71913-28DRVR  
TPS71913-28DRVT  
TPS71926-15DRVR  
PREVIEW  
PREVIEW  
PREVIEW  
PREVIEW  
PREVIEW  
PREVIEW  
ACTIVE  
DRV  
6
6
6
6
6
6
6
3000  
250  
TBD  
TBD  
TBD  
TBD  
TBD  
TBD  
Call TI  
Call TI  
Call TI  
Call TI  
Call TI  
Call TI  
Call TI  
Call TI  
Call TI  
Call TI  
Call TI  
Call TI  
DRV  
DRV  
3000  
250  
DRV  
DRV  
3000  
250  
DRV  
DRV  
3000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
TPS71926-15DRVRG4  
TPS71926-15DRVT  
TPS71926-15DRVTG4  
TPS71928-28DRVR  
TPS71928-28DRVRG4  
TPS71928-28DRVT  
TPS71928-28DRVTG4  
TPS71933-28DRVR  
TPS71933-28DRVRG4  
TPS71933-28DRVT  
TPS71933-28DRVTG4  
TPS71933-33DRVR  
TPS71933-33DRVRG4  
TPS71933-33DRVT  
TPS71933-33DRVTG4  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
SON  
SON  
SON  
SON  
SON  
SON  
SON  
SON  
SON  
SON  
SON  
SON  
SON  
SON  
SON  
DRV  
DRV  
DRV  
DRV  
DRV  
DRV  
DRV  
DRV  
DRV  
DRV  
DRV  
DRV  
DRV  
DRV  
DRV  
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
3000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
250 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
250 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
3000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
3000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
250 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
250 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
3000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
3000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
250 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
250 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
3000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
3000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
250 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
250 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
(1) The marketing status values are defined as follows:  
ACTIVE: Product device recommended for new designs.  
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.  
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in  
a new design.  
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.  
OBSOLETE: TI has discontinued the production of the device.  
(2)  
Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check  
http://www.ti.com/productcontent for the latest availability information and additional product content details.  
TBD: The Pb-Free/Green conversion plan has not been defined.  
Addendum-Page 1  
PACKAGE OPTION ADDENDUM  
www.ti.com  
18-May-2007  
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements  
for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered  
at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.  
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and  
package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS  
compatible) as defined above.  
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame  
retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)  
(3)  
MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder  
temperature.  
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is  
provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the  
accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take  
reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on  
incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited  
information may not be available for release.  
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI  
to Customer on an annual basis.  
Addendum-Page 2  
PACKAGE MATERIALS INFORMATION  
www.ti.com  
17-May-2007  
TAPE AND REEL INFORMATION  
Pack Materials-Page 1  
PACKAGE MATERIALS INFORMATION  
www.ti.com  
17-May-2007  
Device  
Package Pins  
Site  
NSE  
NSE  
NSE  
NSE  
NSE  
NSE  
NSE  
NSE  
Reel  
Diameter Width  
(mm)  
Reel  
A0 (mm)  
2.2  
B0 (mm)  
2.2  
K0 (mm)  
1.2  
P1  
W
Pin1  
(mm) (mm) Quadrant  
(mm)  
TPS71926-15DRVR  
TPS71926-15DRVT  
TPS71928-28DRVR  
TPS71928-28DRVT  
TPS71933-28DRVR  
TPS71933-28DRVT  
TPS71933-33DRVR  
TPS71933-33DRVT  
DRV  
DRV  
DRV  
DRV  
DRV  
DRV  
DRV  
DRV  
6
6
6
6
6
6
6
6
177  
8
4
4
4
4
4
4
4
4
8
8
8
8
8
8
8
8
PKGORN  
T2TR-MS  
P
177  
177  
177  
177  
177  
177  
177  
8
8
8
8
8
8
8
2.2  
2.2  
1.2  
PKGORN  
T2TR-MS  
P
2.2  
2.2  
1.2  
PKGORN  
T2TR-MS  
P
2.2  
2.2  
1.2  
PKGORN  
T2TR-MS  
P
2.2  
2.2  
1.2  
PKGORN  
T2TR-MS  
P
2.2  
2.2  
1.2  
PKGORN  
T2TR-MS  
P
2.2  
2.2  
1.2  
PKGORN  
T2TR-MS  
P
2.2  
2.2  
1.2  
PKGORN  
T2TR-MS  
P
TAPE AND REEL BOX INFORMATION  
Device  
Package  
Pins  
Site  
Length (mm) Width (mm) Height (mm)  
TPS71926-15DRVR  
TPS71926-15DRVT  
DRV  
DRV  
6
6
NSE  
NSE  
195.0  
195.0  
200.0  
200.0  
45.0  
45.0  
Pack Materials-Page 2  
PACKAGE MATERIALS INFORMATION  
www.ti.com  
17-May-2007  
Device  
Package  
Pins  
Site  
Length (mm) Width (mm) Height (mm)  
TPS71928-28DRVR  
TPS71928-28DRVT  
TPS71933-28DRVR  
TPS71933-28DRVT  
TPS71933-33DRVR  
TPS71933-33DRVT  
DRV  
DRV  
DRV  
DRV  
DRV  
DRV  
6
6
6
6
6
6
NSE  
NSE  
NSE  
NSE  
NSE  
NSE  
195.0  
195.0  
195.0  
195.0  
195.0  
195.0  
200.0  
200.0  
200.0  
200.0  
200.0  
200.0  
45.0  
45.0  
45.0  
45.0  
45.0  
45.0  
Pack Materials-Page 3  
IMPORTANT NOTICE  
Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements,  
improvements, and other changes to its products and services at any time and to discontinue any product or service without notice.  
Customers should obtain the latest relevant information before placing orders and should verify that such information is current and  
complete. All products are sold subject to TI’s terms and conditions of sale supplied at the time of order acknowledgment.  
TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI’s  
standard warranty. Testing and other quality control techniques are used to the extent TI deems necessary to support this  
warranty. Except where mandated by government requirements, testing of all parameters of each product is not necessarily  
performed.  
TI assumes no liability for applications assistance or customer product design. Customers are responsible for their products and  
applications using TI components. To minimize the risks associated with customer products and applications, customers should  
provide adequate design and operating safeguards.  
TI does not warrant or represent that any license, either express or implied, is granted under any TI patent right, copyright, mask  
work right, or other TI intellectual property right relating to any combination, machine, or process in which TI products or services  
are used. Information published by TI regarding third-party products or services does not constitute a license from TI to use such  
products or services or a warranty or endorsement thereof. Use of such information may require a license from a third party under  
the patents or other intellectual property of the third party, or a license from TI under the patents or other intellectual property of TI.  
Reproduction of information in TI data books or data sheets is permissible only if reproduction is without alteration and is  
accompanied by all associated warranties, conditions, limitations, and notices. Reproduction of this information with alteration is an  
unfair and deceptive business practice. TI is not responsible or liable for such altered documentation.  
Resale of TI products or services with statements different from or beyond the parameters stated by TI for that product or service  
voids all express and any implied warranties for the associated TI product or service and is an unfair and deceptive business  
practice. TI is not responsible or liable for any such statements.  
TI products are not authorized for use in safety-critical applications (such as life support) where a failure of the TI product would  
reasonably be expected to cause severe personal injury or death, unless officers of the parties have executed an agreement  
specifically governing such use. Buyers represent that they have all necessary expertise in the safety and regulatory ramifications  
of their applications, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related  
requirements concerning their products and any use of TI products in such safety-critical applications, notwithstanding any  
applications-related information or support that may be provided by TI. Further, Buyers must fully indemnify TI and its  
representatives against any damages arising out of the use of TI products in such safety-critical applications.  
TI products are neither designed nor intended for use in military/aerospace applications or environments unless the TI products are  
specifically designated by TI as military-grade or "enhanced plastic." Only products designated by TI as military-grade meet military  
specifications. Buyers acknowledge and agree that any such use of TI products which TI has not designated as military-grade is  
solely at the Buyer's risk, and that they are solely responsible for compliance with all legal and regulatory requirements in  
connection with such use.  
TI products are neither designed nor intended for use in automotive applications or environments unless the specific TI products  
are designated by TI as compliant with ISO/TS 16949 requirements. Buyers acknowledge and agree that, if they use any  
non-designated products in automotive applications, TI will not be responsible for any failure to meet such requirements.  
Following are URLs where you can obtain information on other Texas Instruments products and application solutions:  
Products  
Amplifiers  
Data Converters  
DSP  
Applications  
Audio  
amplifier.ti.com  
dataconverter.ti.com  
dsp.ti.com  
www.ti.com/audio  
Automotive  
Broadband  
Digital Control  
Military  
www.ti.com/automotive  
www.ti.com/broadband  
www.ti.com/digitalcontrol  
www.ti.com/military  
Interface  
interface.ti.com  
logic.ti.com  
Logic  
Power Mgmt  
Microcontrollers  
RFID  
power.ti.com  
Optical Networking  
Security  
www.ti.com/opticalnetwork  
www.ti.com/security  
www.ti.com/telephony  
www.ti.com/video  
microcontroller.ti.com  
www.ti-rfid.com  
www.ti.com/lpw  
Telephony  
Low Power  
Wireless  
Video & Imaging  
Wireless  
www.ti.com/wireless  
Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265  
Copyright © 2007, Texas Instruments Incorporated  

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