Datasheet

Design Strategy
1-3
Introduction
1.2 Design Strategy
The TI SLVP165B EVM provides a convenient method for evaluating the
performance of TPS703xx dual-output linear regulators. The EVM provides
proven, demonstrated reference designs and test modes to aid in evaluation.
The board contains a power supply along with an onboard transient generator.
The transient slew rate can be modified by changing two resistors. Jumpers
allow settings of minimum/maximum load as well as device-enabling and
power sequencing. There is enough room on the EVM to evaluate different
types of output capacitors including ESR behaviors. Many test points allow the
measuring of input, output, and dropout voltage.
The EVM contains a TPS70351. Regulator 1 provides an output voltage of
3.3 V and a maximum output current of 1 A. Regulator 2 provides an output
voltage of 1.8 V and a maximum output current of 2 A.
Table 1–1 summarizes the TPS703xx family’s features. See the TPS703xx
datasheet, TI literature number SLVS285
, for a further explanation of features.
Table 1–1.Summary of the TPS703xx LDO Family Features
Description TPS703xx Feature
Maximum input voltage [V] 6
Maximum output current [A] 1/2
Typical quiescent current [µA] 185
Typical dropout voltage [mV] 160
Typical output noise [µVrms]
(30 Hz ≤ f ≤ 50 kHz, C
o
= 33 µF)
79/77
Accuracy over line, load, and temperature 2%
PSRR (at 1 kHz, C
o
= 10 µF, T
J
= 25°C) 65/60 dB
Package 24 pin TSSOP with PowerPAD
Minimum output capacitor > 47 µF (ceramic)
Available voltage option [V] 3.3/1.5, 3.3/1.2, 3.3/1.8, 3.3/2.5, and adj/adj
Performance advantage
Dual output LDO, power-up sequencing, DSP application,
PG and RESET
PowerPAD is a trademark of Texas Instruments.