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  -  1-A general-purpose fixed-output LDO regulator with lower IQ
  • TLV759P  -  1-A general-purpose adjustable-output LDO regulator with wider input voltage range, lower IQ & lower dropout
  • TPS746  -  1-A adjustable-output LDO regulator with power-good pin

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

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

Parametrics

Compare all products in Linear regulators (LDO) Email Download to Excel
Part number Order 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 Order now Adjustable Output
Fixed Output    
1     5.5     2.2     5.5     1.2     2.1
2.5    
WSON | 6     Enable
Foldback Overcurrent Protection
Reverse Current Protection    
1     -40 to 125     67     32     0.66 | 1ku     Catalog     Ceramic     32     1     130     0.4     See datasheet (WSON)    
TPS737 Order now Adjustable Output
Fixed Output    
1     5.5     2.2     5.4     1.2     1.8
2.5
3
3.3
3.4    
SON | 8
SOT-223 | 6
WSON | 6    
Enable
Foldback Overcurrent Protection
Reverse Current Protection    
1     -40 to 125     50     48     0.58 | 1ku     Catalog     Ceramic     33     3     130     0.4     See datasheet (SON)
6SOT-223: 46 mm2: 7.06 x 6.5 (SOT-223 | 6)
See datasheet (WSON)