Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsPMICsPMIC - LDO voltage regulator Positive, fixed and adjustable HTSSOP 28

TPS767D301-Q1, TPS767D318-Q1, TPS767D325-Q1

DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATORS

SGLS231A − FEBRUARY 2004 − JUNE 2008

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

D Qualified for Automotive Applications

D Dual Output Voltages for Split-Supply

Applications

D Output Current Range of 0 mA to 1.0 A Per

Regulator

D 3.3-V/2.5-V, 3.3-V/1.8-V, and 3.3-V/Adjustable

Output

D Fast-Transient Response

D 2% Tolerance Over Load and Temperature

D Dropout Voltage Typically 350 mV at 1 A

D Ultra Low 85 μA Typical Quiescent Current

D 1 μA Quiescent Current During Shutdown

D Dual Open Drain Power-On Reset With

200-ms Delay for Each Regulator

D 28-Pin PowerPAD™ TSSOP Package

D 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 10-μF 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 1 A. Dual active-low

reset signals allow resetting of core-logic and I/O separately.

AVAILABLE OPTIONS

{}

REGULATOR 1

(V)

REGULATOR 2

(V)

TSSOP

(PWP)

Adj (1.5 − 5.5 V) 3.3 V TPS767D301QPWPRQ1

−40°C to 125°C

1.8 V 3.3 V TPS767D318QPWPRQ1

40 C

125 C

2.5 V 3.3 V TPS767D325QPWPRQ1

†

For the most current package and ordering information, see the Package Option Addendum

at the end of this document, or see the TI web site at http://www.ti.com.

‡

Package drawings, thermal data, and symbolization are available at

http://www.ti.com/packaging.

The TPS767D301 is adjustable using an external resistor divider (see application information).

The PWP packages are taped and reeled as indicated by the R suffix on the device type (e.g.,

TPS767D301QPWPRQ1).

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

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.

1GND

1EN

1IN

2GND

2EN

2IN

1RESET

1FB/NC

1OUT

2RESET

2OUT

PWP PACKAGE

(TOP VIEW)

NC − No internal connection

Summary of content (24 pages)

PAGE 1
TPS767D301-Q1, TPS767D318-Q1, TPS767D325-Q1 DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATORS SGLS231A − FEBRUARY 2004 − JUNE 2008 D Qualified for Automotive Applications D Dual Output Voltages for Split-Supply PWP PACKAGE (TOP VIEW) Applications D D D D D D D D D 1 2 3 4 5 6 7 8 9 10 11 12 13 14 NC NC 1GND 1EN 1IN 1IN NC NC 2GND 2EN 2IN 2IN NC NC D Output Current Range of 0 mA to 1.0 A Per Regulator 3.3-V/2.5-V, 3.3-V/1.8-V, and 3.
PAGE 2
TPS767D301-Q1, TPS767D318-Q1, TPS767D325-Q1 DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATORS SGLS231A − FEBRUARY 2004 − JUNE 2008 DROPOUT VOLTAGE vs FREE-AIR TEMPERATURE LOAD TRANSIENT RESPONSE 103 VO = 3.3 V CL =100 μF TA = 25°C 50 IO = 1 A VDO − Dropout Voltage − mV I O − Output Current − A Δ VO − Change in Output Voltage − mV 100 0 −50 −100 1 0.5 0 102 101 IO = 10 mA 100 10−1 VO = 3.
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TPS767D301-Q1, TPS767D318-Q1, TPS767D325-Q1 DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATORS SGLS231A − FEBRUARY 2004 − JUNE 2008 TPS767D3xx VI 5 6 C1 0.1 μF 50 V IN RESET RESET 250 kΩ IN OUT 4 28 EN OUT GND 24 VO 23 CO + 10 μF 3 Figure 1.
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TPS767D301-Q1, TPS767D318-Q1, TPS767D325-Q1 DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATORS SGLS231A − FEBRUARY 2004 − JUNE 2008 functional block diagram—adjustable version (for each LDO) IN EN RESET _ + OUT + _ 200 ms Delay R1 Vref = 1.1834 V R2 GND functional block diagram—fixed-voltage version (for each LDO) IN EN RESET _ + OUT + _ 200 ms Delay Vref = 1.
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TPS767D301-Q1, TPS767D318-Q1, TPS767D325-Q1 DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATORS SGLS231A − FEBRUARY 2004 − JUNE 2008 Terminal Functions TERMINAL NAME I/O NO.
PAGE 6
TPS767D301-Q1, TPS767D318-Q1, TPS767D325-Q1 DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATORS SGLS231A − FEBRUARY 2004 − JUNE 2008 absolute maximum ratings over operating free-air temperature (unless otherwise noted)† Input voltage range‡, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.3 V to 13.5 V Input voltage range, VI (1IN, 2IN, EN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.
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TPS767D301-Q1, TPS767D318-Q1, TPS767D325-Q1 DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATORS SGLS231A − FEBRUARY 2004 − JUNE 2008 electrical characteristics, Vi = VO(nom) + 1 V, IO = 1 mA, EN = 0, CO = 10 μF (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP 1.5 V ≤ VO ≤ 5.5 V, 10 μA < IO < 1 A TJ = 25°C 1 8 V Ouput 1.8 2.8 V < VI < 10 V, 10 μA < IO < 1 A TJ = 25°C 2 5 V Output 2.5 3.5 V < VI < 10 V, 10 μA < IO < 1 A TJ = 25°C 3 3 V Output 3.3 4.
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TPS767D301-Q1, TPS767D318-Q1, TPS767D325-Q1 DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATORS SGLS231A − FEBRUARY 2004 − JUNE 2008 electrical characteristics, Vi = VO(nom) + 1 V, IO = 1 mA, EN = 0, CO = 10 μF (unless otherwise noted) (continued) PARAMETER Input current (EN) MIN TYP MAX EN = 0 V TEST CONDITIONS −1 0 1 EN = VI −1 Load regulation Dropout voltage (see Note 4) UNIT μA A 1 3 3V VO = 3 3.
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TPS767D301-Q1, TPS767D318-Q1, TPS767D325-Q1 DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATORS SGLS231A − FEBRUARY 2004 − JUNE 2008 TYPICAL CHARACTERISTICS OUTPUT VOLTAGE vs OUTPUT CURRENT OUTPUT VOLTAGE vs OUTPUT CURRENT 1.7965 3.2835 VO = 1.8 V VI = 2.8V TA = 25°C VO = 3.3 V VI = 4.3 V TA = 25°C 1.7960 VO − Output Voltage − V 3.2830 VO − Output Voltage − V 3.2825 3.2820 3.2815 3.2810 1.7955 1.7950 1.7945 3.2805 1.7940 3.2800 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 IO − Output Current − A 0.
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TPS767D301-Q1, TPS767D318-Q1, TPS767D325-Q1 DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATORS SGLS231A − FEBRUARY 2004 − JUNE 2008 TYPICAL CHARACTERISTICS OUTPUT VOLTAGE vs FREE-AIR TEMPERATURE OUTPUT VOLTAGE vs FREE-AIR TEMPERATURE 2.515 1.815 VO = 1.8 V VI = 2.8 V 2.510 1.805 IO = 1 A 1.800 IO = 1 mA 1.795 1.790 VO − Output Voltage − V VO − Output Voltage − V 1.810 VO = 2.5 V VI = 3.5 V 2.505 2.500 IO = 1 A 2.495 IO = 1 mA 2.490 2.485 1.785 −60 −40 −20 0 20 40 60 80 100 120 140 2.
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TPS767D301-Q1, TPS767D318-Q1, TPS767D325-Q1 DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATORS SGLS231A − FEBRUARY 2004 − JUNE 2008 TYPICAL CHARACTERISTICS OUTPUT SPECTRAL NOISE DENSITY vs FREQUENCY POWER SUPPLY RIPPLE REJECTION vs FREQUENCY 10−5 Vn − Output Spectral Noise Density − V/ Hz PSRR − Power Supply Ripple Rejection − dB 90 VO = 3.3 V VI = 4.3 V CO = 10 μF IO = 1 A TA = 25°C 80 70 60 50 40 30 20 10 0 −10 10 100 1k 10k 100k VI = 4.
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TPS767D301-Q1, TPS767D318-Q1, TPS767D325-Q1 DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATORS SGLS231A − FEBRUARY 2004 − JUNE 2008 TYPICAL CHARACTERISTICS LINE TRANSIENT RESPONSE LOAD TRANSIENT RESPONSE Δ VO − Change in Output Voltage − mV 3.8 2.8 VO = 1.8 V IL = 10 mA CL = 10 μF TA = 25°C 20 0 −20 0 20 40 VO = 1.8 V VI = 2.8 V CL = 100 μF TA = 25°C 50 0 −50 −100 I O − Output Current − A Δ VO − Change in Output Voltage − mV VI − Input Voltage − V 100 60 1 0.
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TPS767D301-Q1, TPS767D318-Q1, TPS767D325-Q1 DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATORS SGLS231A − FEBRUARY 2004 − JUNE 2008 TYPICAL CHARACTERISTICS DROPOUT VOLTAGE vs INPUT VOLTAGE 4 900 3 800 IO = 1A VDO − Dropout Voltage − mV VO− Output Voltage − V OUTPUT VOLTAGE vs TIME (AT STARTUP) 2 1 Enable Pulse − V 0 0 700 600 500 TA = 25°C 400 TA = 125°C 300 200 TA = −40°C 100 0 0 20 40 60 80 100 120 140 160 180 200 t − Time − μs 2.5 Figure 18 VI 3 3.5 4 VI − Input Voltage − V 4.
PAGE 14
TPS767D301-Q1, TPS767D318-Q1, TPS767D325-Q1 DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATORS SGLS231A − FEBRUARY 2004 − JUNE 2008 TYPICAL CHARACTERISTICS TYPICAL REGION OF STABILITY TYPICAL REGION OF STABILITY EQUIVALENT SERIES RESISTANCE† vs OUTPUT CURRENT EQUIVALENT SERIES RESISTANCE† vs OUTPUT CURRENT 10 ESR − Equivalent Series Resistance − Ω ESR − Equivalent Series Resistance − Ω 10 Region of Instability 1 VO = 3.3 V Co = 4.7 μF VI = 4.3 V TA = 25°C Region of Stability 0.
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TPS767D301-Q1, TPS767D318-Q1, TPS767D325-Q1 DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATORS SGLS231A − FEBRUARY 2004 − JUNE 2008 APPLICATION INFORMATION The features of the TPS767D3xx family (low-dropout voltage, ultra low quiescent current, power-saving shutdown mode, and a supply-voltage supervisor) and the power-dissipation properties of the TSSOP PowerPAD package have enabled the integration of the dual LDO regulator with high output current for use in DSP and other multiple voltage applications.
PAGE 16
TPS767D301-Q1, TPS767D318-Q1, TPS767D325-Q1 DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATORS SGLS231A − FEBRUARY 2004 − JUNE 2008 device operation (continued) Another pitfall associated with the pnp-pass element is its tendency to saturate when the device goes into dropout. The resulting drop in β forces an increase in IB to maintain the load. During power up, this translates to large start-up currents. Systems with limited supply current may fail to start up.
PAGE 17
TPS767D301-Q1, TPS767D318-Q1, TPS767D325-Q1 DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATORS SGLS231A − FEBRUARY 2004 − JUNE 2008 external capacitor requirements (continued) When necessary to achieve low height requirements along with high output current and/or high ceramic load capacitance, several higher ESR capacitors can be used in parallel to meet the previous guidelines. TPS767D3xx 5 VI 6 IN 28 RESET 250 kΩ IN 24 OUT C1 0.1 μF 50 V 4 RESET EN VO 23 OUT CO + 10 μF GND 3 Figure 26.
PAGE 18
TPS767D301-Q1, TPS767D318-Q1, TPS767D325-Q1 DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATORS SGLS231A − FEBRUARY 2004 − JUNE 2008 Reset indicator The TPS767D3xx features a RESET output that can be used to monitor the status of the regulator. The internal comparator monitors the output voltage: when the output drops to 95% (typical) of its regulated value, the RESET output transistor turns on, taking the signal low. The open-drain output requires a pullup resistor. If not used, it can be left floating.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 5-Nov-2013 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.
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