VOLTAGE REGULATORS. TPS767D325 Datasheet

TPS767D325 REGULATORS. Datasheet pdf. Equivalent

Part TPS767D325
Description DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATORS
Feature TPS767D3xx www.ti.com...............................................................................
Manufacture etcTI
Total Page 23 Pages
Datasheet
Download TPS767D325 Datasheet



TPS767D325
TPS767D3xx
www.ti.com......................................................................................................................................................... SLVS209H – JULY 1999 – REVISED AUGUST 2008
DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATORS
FEATURES
1
23 Dual Output Voltages for Split-Supply
Applications
Output Current Range of 0mA to 1.0A per
Regulator
3.3V/2.5V, 3.3V/1.8V, and 3.3V/Adjustable
Output
Fast-Transient Response
2% Tolerance Over Load and Temperature
Dropout Voltage Typically 350mV at 1A
Ultra-low 85µA Typical Quiescent Current
1µA Quiescent Current During Shutdown
Dual Open-Drain Power-On Reset with 200ms
Delay for Each Regulator
28-Pin PowerPAD™ TSSOP Package
Thermal Shutdown Protection for Each
Regulator
DESCRIPTION
The TPS767D3xx family of dual voltage regulators
offers fast transient response, low dropout voltages
and dual outputs in a compact package and
incorporating stability with 10µF low ESR output
capacitors.
The TPS767D3xx family of dual voltage regulators is
designed primarily for DSP applications. These
devices can be used in any mixed-output voltage
application, with each regulator supporting up to 1A.
Dual active-low reset signals allow resetting of
core-logic and I/O separately.
Because the PMOS device behaves as a low-value
resistor, the dropout voltage is very low (350mV
typically at an output current of 1A for the
TPS767D325) and is directly proportional to the
output current. Additionally, since the PMOS pass
element is a voltage-driven device, the quiescent
current is very low and independent of output loading
(typically 85µA over the full range of output current,
0mA to 1A). These two key specifications yield a
significant improvement in operating life for
battery-powered systems. This LDO family also
features a sleep mode; applying a TTL high signal to
EN (enable) shuts down the regulator, reducing the
quiescent current to 1µA at TJ = +25°C.
The RESET output of the TPS767D3xx initiates a
reset in microcomputer and microprocessor systems
in the event of an undervoltage condition. An internal
comparator in the TPS767D3xx monitors the output
voltage of the regulator to detect an undervoltage
condition on the regulated output voltage.
The TPS767D3xx is offered in 1.8V, 2.5V, and 3.3V
fixed-voltage versions and in an adjustable version
(programmable over the range of 1.5V to 5.5V).
Output voltage tolerance is specified as a maximum
of 2% over line, load, and temperature ranges. The
TPS767D3xx family is available in a 28-pin PWP
TSSOP package. They operate over a junction
temperature range of –40°C to +125°C.
LINE TRANSIENT RESPONSE
VOUT = 3.3V
CL = 10mF
5.3 TA = 25°C
4.3
10
0
-10
0 20 40 60 80 100 120 140 160 180 200
t - Time - ms
DROPOUT VOLTAGE
vs FREE-AIR TEMPERATURE
3
10
102 IOUT = 1A
101
IOUT = 10mA
10
10-1
-2
VOUT = 3.3V
COUT = 10mF
IOUT = 0
10
-60 -40 -20 0 20 40 60 80 100 120 140
TA - Free-Air Temperature - °C
PWP PACKAGE
(TOP VIEW)
NC 1
NC 2
1GND 3
1EN
1IN
4
5
1IN 6
NC 7
NC 8
2GND 9
2EN 10
2IN 11
2IN 12
NC 13
NC 14
28 1RESET
27 NC
26 NC
25 1FB/NC
24 1OUT
23 1OUT
22 2RESET
21 NC
20 NC
19 NC
18 2OUT
17 2OUT
16 NC
15 NC
NC = No internal connection
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.
PowerPAD is a trademark of Texas Instruments.
2
All other trademarks are the property of their respective owners.
3
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 © 1999–2008, Texas Instruments Incorporated



TPS767D325
TPS767D3xx
SLVS209H – JULY 1999 – REVISED AUGUST 2008......................................................................................................................................................... www.ti.com
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.
AVAILABLE OPTIONS(1)
DEVICE
TPS767D301
TPS767D318
TPS767D325
REGULATOR 1 VOUT (V)
Adjustable (1.5V – 5.5V)
1.8V
2.5V
REGULATOR 2 VOUT (V)
3.3V
3.3V
3.3V
(1) For the most current specifications and package information see the Package Option Addendum at the end of this document, or see the
TI web site at www.ti.com.
ABSOLUTE MAXIMUM RATINGS(1)
Over operating temperature range (unless otherwise noted).
Input voltage range, V1IN, V2IN(2)
Enable voltage range, V1EN, V2EN
Output voltage range, V1OUT, V2OUT
RESET voltage range, V1RESET, V2RESET
Peak output current
ESD rating, HBM
Continuous total power dissipation
Operating junction temperature range, TJ
Storage temperature range, Tstg
TPS767D3xx
–0.3 to +13.5
–0.3 to VIN + 0.3
–0.3 to +7.0
–0.3 to +16.5
Internally limited
2
See Dissipation Ratings table
–40 to +125
–65 to +150
UNIT
V
V
V
V
kV
°C
°C
(1) Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under recommended operating
conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) All voltage values are with respect to network terminal ground.
POWER DISSIPATION RATINGS
PACKAGE
PWP (1)
AIR FLOW
(CFM)
0
250
TA +25°C
POWER RATING
3.58 W
5.07 W
DERATING FACTOR
ABOVE ta = +25°C
35.8 mW/°C
50.7 mW/°C
TA = +70°C
POWER RATING
1.97 W
2.79 W
TA = +85°C
POWER RATING
1.43 W
2.03 W
(1) This parameter is measured with the recommended copper heat sink pattern on a 4-layer PCB, 1oz. copper on 4-in × 4-in ground layer.
For more information, refer to TI technical brief literature number SLMA002.
2 Submit Documentation Feedback
Copyright © 1999–2008, Texas Instruments Incorporated





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