1% High-Accuracy, 1-A, Low-Dropout Regulator with Reverse Current Protection

1% High-Accuracy, 1-A, Low-Dropout Regulator with Reverse Current Protection - TPS7A37

Recommended alternative parts

  • TPS7A91  -  TPS7A91 is a single-channel, low-noise, 1-A LDO with power good.
  • TPS7A88  -  TPS7A88 is a dual-channel, low noise, 1-A LDO.
  • TLV757P  -  TLV757P is a single-channel, Low Iq, 1A LDO
  • TPS746  -  TPS746 is a 1A ADJUSTABLE output LDO with power good.


The TPS7A37 family of linear low-dropout (LDO) voltage regulators uses an NMOS pass element in a voltage-follower configuration. This topology is relatively insensitive to output capacitor value and ESR, allowing a wide variety of load configurations. Load transient response is excellent, even with a small 1-µF ceramic output capacitor. The NMOS topology also allows very low dropout.

The TPS7A37 family uses an advanced BiCMOS process to yield high precision while delivering very low dropout voltages and low ground pin current. Current consumption, when not enabled, is under 20 nA and ideal for portable applications. These devices are protected by thermal shutdown and foldback current limit.


  • Stable with 1-µF or Larger Ceramic Output
  • Input Voltage Range: 2.2 V to 5.5 V
  • Ultralow Dropout Voltage:
    • 200-mV Maximum at 1 A
  • Excellent Load Transient Response–Even With
    Only 1-µF Output Capacitor
  • NMOS Topology Delivers Low Reverse Leakage
  • Excellent Accuracy:
    • 0.23% Nominal Accuracy
    • 1% Overall Accuracy Over Line, Over Load,
      and Over Temperature
  • Less Than 20-nA typical IQ in Shutdown Mode
  • Thermal Shutdown and Current Limit for Fault

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Parametrics Compare all products in Single Channel LDO

Iout (Max) (A)
Output Options
Vin (Min) (V)
Vin (Max) (V)
Fixed Output Options (V)
Vout (Min) (V)
Vout (Max) (V)
Iq (Typ) (mA)
Vdo (Typ) (mV)
Accuracy (%)
Noise (uVrms)
PSRR @ 100KHz (dB)
Output Capacitor Type
Operating Temperature Range (C)
TPS7A37 TPS737
1    1   
Adjustable Output
Fixed Output   
Adjustable Output
Fixed Output   
2.2    2.2   
5.5    5.5   
1.2    1.2   
5.5    5.4   
0.4    0.4   
130    130   
1    3   
32    48   
32    33   
Ceramic    Ceramic   
-40 to 125    -40 to 125   
6WSON    6SOT-223

WEBENCH® Designer TPS7A37

  Min   Max Range
Vin  V 2.2 to 5.5V
Product Option
Vout  V
Iout  A ≤ 1.0A
Ambient Temp  °C -40.0 to 125.0°C