TPS737 Single Output LDO, 1A, Adj. (1.2 to 5.0V), Reverse Current Protection | TI.com

TPS737 (ACTIVE)

Single Output LDO, 1A, Adj. (1.2 to 5.0V), Reverse Current Protection

 

Recommended alternative parts

  • TLV757P  -  1-A general-purpose fixed output LDO regulator with lower IQ
  • TPS746  -  1-A general-purpose adjustable-output LDO regulator with power-good
  • TLV759P  -  1-A general-purpose adjustable-output LDO regulator with wider input voltage range, lower IQ & lower dropout

Description

The TPS737xx 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 TPS737xx 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 less than 20 nA and ideal for portable applications. These devices are protected by thermal shutdown and foldback current limit.

For applications that require higher output voltage accuracy, consider TI’s TPS7A37xx family of 1% overall accuracy, 1-A low-dropout voltage regulators.

Features

  • Stable With 1-µF or Larger Ceramic Output
    Capacitor
  • Input Voltage Range: 2.2 V to 5.5 V
  • Ultralow Dropout Voltage: 130 mV Typical at 1 A
  • Excellent Load Transient Response–Even With
    Only 1-µF Output Capacitor
  • NMOS Topology Delivers Low Reverse Leakage
    Current
  • 1% Initial Accuracy
  • 3% Overall Accuracy Over Line, Load, and
    Temperature
  • Less Than 20 nA Typical IQ in Shutdown Mode
  • Thermal Shutdown and Current Limit for Fault
    Protection
  • Available in Multiple Output Voltage Versions
    • Adjustable Output: 1.20 V to 5.5 V
    • Custom Outputs Available Using Factory
      Package-Level Programming

WEBENCH® Designer TPS737

  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

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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)
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)    
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)