TPS7A88

Clock

ENABLE

SCLK

ADC

OUT1

OUT2

VDD

PG1

PG2

ENABLE

VDD_VCO

IN1

IN2

EN1

EN2

VIN1

EN1

VIN2

EN2

LMK03328

LMX2581

ADC3xxx

ADC3xJxx

ADS4xJBxx

ADC5xJxx

ADC12Jxxxx

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TPS7A88

SBVS248A – NOVEMBER 2015 – REVISED NOVEMBER 2015

1 Features

3 Description

1

•

Two Independent LDO Channels

dropout (LDO) voltage regulator capable of sourcing

•

1 A per channel with only 200 mV of maximum

•

Low Dropout: 200 mV (Max) at 1 A

dropout.

•

Wide Input Voltage Range: 1.4 V to 6.5 V

The

TPS7A88

provides

the

flexibility

of

two

•

Wide Output Voltage Range: 0.8 V to 5.0 V

independent LDOs and approximately 50% smaller

solution size than two single-channel LDOs. Each

•

High Power-Supply Ripple Rejection:

output is adjustable with external resistors from 0.8 V

–

75 dB at DC

to 5.0 V. The TPS7A88 wide input-voltage range

–

40 dB at 100 kHz

supports operation as low as 1.4 V and up to 6.5 V.

–

40 dB at 1 MHz

With 1% output voltage accuracy (over line, load, and

•

1.0% Accuracy Over Line, Load, and Temperature

temperature) and soft-start capabilities to reduce in-

rush current, the TPS7A88 is ideal for powering

•

Excellent Load Transient Response

sensitive

analog

low-voltage

devices

[such

as

•

Adjustable Start-Up In-Rush Control

voltage-controlled oscillators (VCOs), analog-to-digital

•

Selectable Soft-Start Charging Current

converters

(ADCs),

digital-to-analog

converters

(DACs),

high-end

processors,

and

field-

•

Independent Open-Drain Power-Good (PG)

programmable gate arrays (FPGAs)].

Outputs

•

Stable with a 10-µF or Larger Ceramic Output

The TPS7A88 is designed to power up noise-

Capacitor

sensitive components such as those found in high-

speed communication, video, medical, or test and

•

4-mm × 4-mm, 20-Pin WQFN Package

output noise and wideband PSRR (40 dB at 1 MHz)

2 Applications

minimizes phase noise and clock jitter. These

•

High-Speed Analog Circuits:

features maximize performance of clocking devices,

ADCs, and DACs.

–

VCO, ADC, DAC, LVDS

•

Imaging: CMOS Sensors, Video ASICs

Device Information(1)

•

Test and Measurement

PART NUMBER

PACKAGE

BODY SIZE (NOM)

•

Instrumentation, Medical, and Audio

TPS7A88

WQFN (20)

4.00 mm × 4.00 mm

•

Digital Loads: SerDes, FPGA, DSP™

(1) For all available packages, see the orderable addendum at

the end of the datasheet.

Typical Application Diagram

1

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.