TPS70751_15 Datasheet, PDF (1/40 Pages) Texas Instruments – Dual-Output, Low Dropout Voltage Regulators with Power-Up Sequencing for Split-Voltage DSP Systems

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TPS70745, TPS70748
TPS70751, TPS70758
TPS70702
SLVS291D – MAY 2000 – REVISED DECEMBER 2007
Dual-Output, Low Dropout Voltage Regulators
with Power-Up Sequencing for Split-Voltage DSP Systems
FEATURES
1
•23 Dual Output Voltages for Split-Supply
Applications
• Selectable Power-Up Sequencing for DSP
Applications (See Part Number TPS708xx for
Independent Enable Outputs)
• Output Current Range of 250mA on Regulator
1 and 125mA on Regulator 2
• Fast Transient Response
• Voltage Options: 3.3V/2.5V, 3.3V/1.8V,
3.3V/1.5V, 3.3V/1.2V, and Dual Adjustable
Outputs
• Open Drain Power-On Reset with 120ms Delay
• Open Drain Power Good for Regulator 1
• Ultralow 190µA (typ) Quiescent Current
• 1µA Input Current During Standby
• Low Noise: 65µV_RMS Without Bypass Capacitor
• Quick Output Capacitor Discharge Feature
• Two Manual Reset Inputs
• 2% Accuracy Over Load and Temperature
• Undervoltage Lockout (UVLO) Feature
• 20-Pin PowerPAD™ TSSOP Package
• Thermal Shutdown Protection
DESCRIPTION
TPS707xx family devices are designed to provide a
complete power management solution for the
TMS320™ DSP family, processor power, ASIC,
FPGA, and digital applications where dual output
voltage regulators are required. Easy programmability
of the sequencing function makes the TPS707xx
family ideal for any TMS320 DSP applications with
power sequencing requirements. Differentiated
features, such as accuracy, fast transient response,
SVS supervisory circuit, manual reset inputs, and an
enable function, provide a complete system solution.
The TPS707xx family of voltage regulators offer very
low dropout voltage and dual outputs with power-up
sequence control, which is designed primarily for
DSP applications. These devices have extremely low
noise output performance without using any added
filter bypass capacitors and are designed to have a
fast transient response and be stable with 10µF low
ESR capacitors.
These devices have fixed 3.3V/2.5V, 3.3V/1.8V,
3.3V/1.5V, 3.3V/1.2V, and adjustable/adjustable
voltage options. Regulator 1 can support up to
250mA, and regulator 2 can support up to 125mA.
Separate voltage inputs allow the designer to
configure the source power.
PWP PACKAGE
(TOP VIEW)
NC
1
V_IN1
2
V_IN1
3
MR1
4
MR2
5
EN
6
SEQ
7
GND
8
V_IN2
9
V_IN2
10
20
NC
19
V_OUT1
18
V_OUT1
17
V_SENSE1/FB1
16
PG1
15
RESET
14
V_SENSE2/FB2
13
V_OUT2
12
V_OUT2
11
NC
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, TMS320 are trademarks 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 © 2000–2007, Texas Instruments Incorporated