TPS70145_15 Datasheet, PDF (1/42 Pages) Texas Instruments – Dual-Output Low Dropout Voltage Regulatorsnull with Power-Up Sequencing for Split-Voltage DSP Systems

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TPS70145, TPS70148
TPS70151, TPS70158
TPS70102
SLVS222I – DECEMBER 1999 – REVISED AUGUST 2010
Dual-Output Low Dropout Voltage Regulators
with Power-Up Sequencing for Split-Voltage DSP Systems
Check for Samples: TPS70145, TPS70148, TPS70151, TPS70158, TPS70102
FEATURES
1
•23 Dual Output Voltages for Split-Supply
Applications
• Selectable Power-Up Sequencing for DSP
Applications
• Output Current Range of 500mA on Regulator
1 and 250mA 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
• Ultra Low 190mA (typ) Quiescent Current
• 1mA Input Current During Standby
• Low Noise: 65mV_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
TPS701xx 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 TPS701xx
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 TPS701xx 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 10mF 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
500mA, and regulator 2 can support up to 250mA.
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 © 1999–2010, Texas Instruments Incorporated