TPS731 Cap-Free, NMOS, 150mA Low-Dropout (LDO) Regulator With Reverse Current Protection | TI.com

TPS731 (ACTIVE) Cap-Free, NMOS, 150mA Low-Dropout (LDO) Regulator With Reverse Current Protection

 

Description

The TPS731xx family of low-dropout (LDO) linear voltage regulators uses a new topology: an NMOS pass element in a voltage-follower configuration. This topology is stable using output capacitors with low equivalent series resistance (ESR), and even allows operation without a capacitor. The device also provides high reverse blockage (low reverse current) and ground pin current that is nearly constant over all values of output current.

The TPS731xx 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 1 µA and ideal for portable applications. The extremely low output noise (30 µVRMS with 0.1-µF CNR) is ideal for powering VCOs. These devices are protected by thermal shutdown and foldback current limit.

Features

  • Stable With or Without Capacitors of All Types
  • Input Voltage Range of 1.7 V to 5.5 V
  • Ultralow Dropout Voltage: 30 mV Typical (150-mA
    Load)
  • Excellent Load Transient Response–With or
    Without Optional Output Capacitor
  • New NMOS Topology Provides Low Reverse
    Leakage Current
  • Low Noise: 30 µVRMS Typical (10 kHz to 100 kHz)
  • 0.5% Initial Accuracy
  • 1% Overall Accuracy Over Line, Load, and
    Temperature
  • Less Than 1-µA Maximum IQ in Shutdown Mode
  • Thermal Shutdown and Specified Minimum and
    Maximum Current Limit Protection
  • Available in Multiple Output Voltage Versions
    • Fixed Outputs of 1.20 V to 5 V
    • Adjustable Outputs from 1.2 V to 5.5 V
    • Custom Outputs Available
  • APPLICATIONS
    • Smart Grid and Energy
    • Building Automation
    • Set-Top Boxes
    • Medical Equipment
    • Test and Measurement
    • Point-of-Sale Terminals
    • Wireless Infrastructure

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WEBENCH® Designer TPS731

  Min   Max Range
Vin  V 1.7 to 5.5V
Product Option
Vout  V
Iout  A ≤ 0.15A
Ambient Temp  °C -55.0 to 150.0°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)
TPS731 Order now Adjustable Output
Fixed Output    
0.15     5.5     1.7     5.5     1.2     1.25
1.5
1.8
2.5
3
3.1
3.2
3.3
5    
SOT-23 | 5     Enable
Foldback Overcurrent Protection
Reverse Current Protection    
1     -40 to 125     207     30     0.38 | 1ku     Catalog     Cap Free
Ceramic    
32     1     30     0.4     5SOT-23: 5 mm2: 1.6 x 2.9 (SOT-23 | 5)    
TPS732 Order now Adjustable Output
Fixed Output    
0.25     5.5     1.7     5.5     1.2     1.3
1.5
1.6
1.8
1.9
2.5
3
3.3
5    
SON | 8
SOT-223 | 6
SOT-23 | 5    
Enable
Foldback Overcurrent Protection
Reverse Current Protection    
1     -40 to 125     53     30     0.51 | 1ku     Catalog     Cap Free
Ceramic    
32     1     40     0.4     See datasheet (SON)
6SOT-223: 46 mm2: 7.06 x 6.5 (SOT-223 | 6)
5SOT-23: 5 mm2: 1.6 x 2.9 (SOT-23 | 5)    
TPS736 Order now Adjustable Output
Fixed Output    
0.4     5.5     1.7     5.4     1.2     1.25
1.5
1.6
1.8
1.9
2.5
3
3.2
3.3
4.3    
SON | 8
SOT-223 | 6
SOT-23 | 5    
Enable
Foldback Overcurrent Protection
Reverse Current Protection    
1     -40 to 125     53     30     0.75 | 1ku     Catalog     Cap Free
Ceramic    
32     1     75     0.4     See datasheet (SON)
6SOT-223: 46 mm2: 7.06 x 6.5 (SOT-223 | 6)
5SOT-23: 5 mm2: 1.6 x 2.9 (SOT-23 | 5)