TPS7A37 1% High-Accuracy, 1-A, Low-Dropout Regulator with Reverse Current Protection | TI.com

TPS7A37 (ACTIVE)

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

 

Recommended alternative parts

  • TLV757P  -  pin-to-pin compatible, 1-A fixed output LDO with lower Iq
  • TPS746  -  pin-to-pin compatible, 1-A adjustable output LDO with wider input voltage range, lower Iq, and lower dropout

Description

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.

Features

  • Stable with 1-µF or Larger Ceramic Output
    Capacitor
  • 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
    Current
  • 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
    Protection

View more

Parametrics Compare all products in Linear regulators (LDO)

 
Output options
Iout (Max) (A)
Vin (Max) (V)
Vin (Min) (V)
Vout (Max) (V)
Vout (Min) (V)
Fixed output options (V)
Package Group
Features
Regulated outputs (#)
Operating temperature range (C)
Thermal Resistance θJA (°C/W)
Noise (uVrms)
Approx. price (US$)
Rating
Output capacitor type
PSRR @ 100 KHz (dB)
Accuracy (%)
Vdo (Typ) (mV)
Iq (Typ) (mA)
Package size: mm2:W x L (PKG)
TPS7A37 TPS737
Adjustable Output
Fixed Output    
Adjustable Output
Fixed Output    
1     1    
5.5     5.5    
2.2     2.2    
5.5     5.4    
1.2     1.2    
2.1
2.5    
1.8
2.5
3
3.3
3.4    
WSON | 6     SON | 8
SOT-223 | 6
WSON | 6    
Enable
Foldback Overcurrent Protection
Reverse Current Protection    
Enable
Foldback Overcurrent Protection
Reverse Current Protection    
1     1    
-40 to 125     -40 to 125    
67     50    
32     48    
0.66 | 1ku     0.58 | 1ku    
Catalog     Catalog    
Ceramic     Ceramic    
32     33    
1     3    
130     130    
0.4     0.4    
See datasheet (WSON)     See datasheet (SON)
6SOT-223: 46 mm2: 7.06 x 6.5 (SOT-223 | 6)
See datasheet (WSON)    

Design tool

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