TPS70751-EP_15 Datasheet, PDF (1/42 Pages) Texas Instruments – DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATOR WITH POWER-UP SEQUENCING FOR SPLIT-VOLTAGE DSP SYSTEMS

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TPS70751-EP
DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATOR
WITH POWER-UP SEQUENCING FOR SPLIT-VOLTAGE DSP SYSTEMS
SLVS718 – DECEMBER 2006
FEATURES
• Controlled Baseline
– One Assembly/Test Site, One Fabrication
Site
• Enhanced Diminishing Manufacturing Sources
(DMS) Support
• Enhanced Product-Change Notification
• Qualification Pedigree ⁽¹⁾
• Dual Output Voltages for Split-Supply
Applications
• Selectable Power-Up Sequencing for DSP
Applications (See Part Number TPS708xx for
Independently Enabled Outputs)
• Output Current Range of 250 mA on
Regulator 1 and 125 mA on Regulator 2
• Fast Transient Response
• 3.3-V/1.8-V Fixed Voltage Outputs
• Open-Drain Power-On Reset With 120-ms
Delay
• Open-Drain Power Good for Regulator 1
(1) Component qualification in accordance with JEDEC and
industry standards to ensure reliable operation over an
extended temperature range. This includes, but is not limited
to, Highly Accelerated Stress Test (HAST) or biased 85/85,
temperature cycle, autoclave or unbiased HAST,
electromigration, bond intermetallic life, and mold compound
life. Such qualification testing should not be viewed as
justifying use of this component beyond specified
performance and environmental limits.
• Ultralow 190-µA (Typ) Quiescent Current
• 1-µA Input Current During Standby
• Low Noise: 65 µVrms 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™ Thin Shrink Small-Outline
Package (TSSOP)
• Thermal Shutdown Protection
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
xxxxx
DESCRIPTION
The TPS707xx family devices are designed to provide a complete power-management solution for TI DSP,
processor power, ASIC, FPGA, and digital applications where dual-output voltage regulators are required. Easy
programmability of the sequencing function makes this family ideal for any TI DSP applications with
power-sequencing requirements. Differentiated features, such as accuracy, fast transient response, SVS
supervisory circuit (power-on reset), manual reset inputs, and enable function, provide a complete system
solution.
The TPS707xx family of voltage regulators offer very low dropout (LDO) 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-µF low ESR capacitors.
The TPS70751 has a fixed voltage of 3.3 V/1.8 V. Regulator 1 can support up to 250 mA and regulator 2 can
support up to 125 mA. Separate voltage inputs allow the designer to configure the source power.
Because the PMOS device behaves as a low-value resistor, the dropout voltage is very low (typically 83 mV on
regulator 1) 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 (maximum of 230 µA
over the full range of output current). This LDO family also features a sleep mode; applying a high signal to EN
(enable) shuts down both regulators, reducing the input current to 1 µA at T_J = 25°C.
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.
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 © 2006, Texas Instruments Incorporated