TPS70175-Q1 Datasheet, PDF (1/31 Pages) Texas Instruments – DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATOR WITH POWER-UP SEQUENCING FOR SPLIT-VOLTAGE DSP SYSTEMS

TPS70175-Q1
www.ti.com
SGLS300B – MARCH 2005 – REVISED SEPTEMBER 2010
DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATOR
WITH POWER-UP SEQUENCING FOR SPLIT-VOLTAGE DSP SYSTEMS
Check for Samples: TPS70175-Q1
FEATURES
1
•2 Qualified for Automotive Applications
• Dual Output Voltages for Split-Supply
Applications
• Selectable Power-Up Sequencing for DSP
Applications
• Output Current Range of 500 mA on
Regulator 1 and 250 mA on Regulator 2
• Fast Transient Response
• Voltage Options: 5 V/2.5 V
• Open Drain Power-On Reset With 30-ms Delay
• Open Drain Power Good for Regulator 1
• Ultra Low 190-mA (Typ) Quiescent Current
• 1-mA Input Current During Standby
• Low Noise = 65 mV_RMS Without a 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
The TPS70175 is 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 TPS70175 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 TPS70175 voltage regulator offers 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 10-mF low ESR
capacitors.
This device has a fixed 5 V/2.5 V voltage option.
Regulator 1 can support up to 500 mA and regulator
2 can support up to 250 mA. 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
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 © 2005–2010, Texas Instruments Incorporated