TPS7A89 (ACTIVE)

Dual 2A Low-Noise (3.8-μVRMS) LDO Voltage Regulator

 

Recommended alternative parts

  • TPS7A84A  -  The TPS7A84A is a 3A single channel LDO with improved accuracy 0.75%
  • TPS7A8300  -  TPS7A8300 is a low noise, 2-A LDO.

Description

The TPS7A89 is a dual, low-noise (3.8 µVRMS), low-dropout (LDO) voltage regulator capable of sourcing 2 A per channel with only 400 mV of maximum dropout.

The TPS7A89 provides the flexibility of two independent LDOs and approximately 60% smaller solution size than two single-channel LDOs. Each output is adjustable with external resistors from 0.8 V to 5.2 V. The wide input-voltage range of the TPS7A89 supports operation as low as 1.4 V and up to 6.5 V.

With 1% output voltage accuracy (over line, load, and temperature) and soft-start capabilities to reduce in-rush current, the TPS7A89 is ideal for powering sensitive analog low-voltage devices [such as voltage-controlled oscillators (VCOs), analog-to-digital converters (ADCs), digital-to-analog converters (DACs), high-end processors, and field-programmable gate arrays (FPGAs)].

The TPS7A89 is designed to power noise-sensitive components such as those found in high-speed communication, video, medical, or test and measurement applications. The very low 3.8-µVRMS output noise and wideband PSRR (40 dB at 1 MHz) minimizes phase noise and clock jitter. These features maximize the performance of clocking devices, ADCs, and DACs.

Features

  • Two Independent LDO Channels
  • 4-mm × 4-mm, 20-Pin WQFN Package
  • Low Output Noise: 3.8 µVRMS (10 Hz to 100 kHz)
  • Low Dropout: 180 mV (typ) at 2 A
  • Wide Input Voltage Range: 1.4 V to 6.5 V
  • Wide Output Voltage Range: 0.8 V to 5.2 V
  • High Power-Supply Rejection Ratio (PSRR):
    • 75 dB at DC
    • 40 dB at 100 kHz
    • 40 dB at 1 MHz
  • 1.0% Accuracy Over Line, Load, and Temperature
  • Excellent Load Transient Response
  • Adjustable Start-Up In-Rush Control
  • Selectable Soft-Start Charging Current
  • Independent Open-Drain Power-Good (PGx) Outputs
  • Stable with a 10 µF or Larger Ceramic Output Capacitor

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Parametrics Compare all products in Multi-Channel LDO

 
Regulated Outputs (#)
Output Options
Features
Iout (Max) (A)
Iout2 (A)
Vin (Min) (V)
Vin (Max) (V)
Vout (Min) (V)
Vout (Max) (V)
Vout2 (Min) (V)
Vout2 (Max) (V)
Output Capacitor Type
Iq (Typ) (mA)
Vdo (Typ) (mV)
PSRR @ 100KHz (dB)
Accuracy (%)
Noise (uVrms)
Rating
Operating Temperature Range (C)
Pin/Package
TPS7A89 TPS7A87 TPS7A88
2    2    2   
Adjustable Output    Adjustable Output    Adjustable Output   
Enable
Foldback Overcurrent Protection
Power Good
Soft Start   
Enable
Foldback Overcurrent Protection
Power Good
Soft Start   
Enable
Foldback Overcurrent Protection
Power Good
Soft Start   
2    0.5    1   
2    0.5    1   
1.4    1.4    1.4   
6.5    6.5    6.5   
0.8    0.8    0.8   
5.2    5.2    5.2   
0.8    0.8    0.8   
5.2    5.2    5.2   
Ceramic    Ceramic    Ceramic   
2.1    2.1    2   
260    75    130   
35    48    48   
1    1    1   
3.8    3.8    3.8   
Catalog    Catalog    Catalog   
-40 to 125    -40 to 125    -40 to 125   
20QFN    20QFN    20QFN