TPS732 Cap-Free, NMOS, 250mA Low Dropout Regulator with Reverse Current Protection | TI.com

TPS732
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Cap-Free, NMOS, 250mA Low Dropout Regulator with Reverse Current Protection

 

Recommended alternative parts

  • TLV758P  -  500-mA LDO regulator with lower IQ

Description

The TPS732 family of low-dropout (LDO) voltage regulators uses 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 TPS732 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 No Output Capacitor or Any Value or
    Type of Capacitor
  • Input Voltage Range: 1.7 V to 5.5 V
  • Ultralow Dropout Voltage: 40 mV Typical at
    250 mA
  • Excellent Load Transient Response–With or
    Without Optional Output Capacitor
  • NMOS Topology Provides Low Reverse Leakage
    Current
  • Low Noise: 30 µVRMS Typical (10 kHz to 100 kHz)
  • 0.5% Initial Accuracy
  • 1% Overall Accuracy (Line, Load, and
    Temperature)
  • Less Than 1-µA Maximum IQ in Shutdown Mode
  • Thermal Shutdown and Specified Min and Max
    Current Limit Protection
  • Available in Multiple Output Voltage Versions
    • Fixed Outputs of 1.2 V to 5 V
    • Adjustable Outputs from 1.2 V to 5.5 V
    • Custom Outputs Available
  • APPLICATIONS
    • Portable and Battery-Powered Equipment
    • Post-Regulation for Switching Supplies
    • Noise-Sensitive Circuitry such as VCOs
    • Point-of-Load Regulation for DSPs, FPGAs,
      ASICs, and Microprocessors

All other trademarks are the property of their respective owners

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Thermal calculator

Estimate the LDO IC temperature at your design conditions:
Part number
    Range
Vin  V
Vout  V
Iout  A
Ambient temp  °C
Package option
Voltage option
PCB construction
Enhanced Thermal = single thermal spreading plane of 1 oz Cu
Minimum Thermal = single thermal spreading plane of 1/2 oz Cu
View the user guide for more details.

Junction temperature vs. PCB copper coverage area
These are estimated power dissipation and thermal results.
Care must be taken to ensure that device junction temperature
does not exeed the maximum ratings as indicated in the datasheet.

This calculator uses the PCB copper area to estimate the device junction temperature. See notes on usage and calculation method.

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 PSRR @ 100 KHz (dB) Accuracy (%) Dropout voltage (Vdo) (Typ) (mV) Iq (Typ) (mA) Package size: mm2:W x L (PKG)
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     32     1     40     0.4     8SON: 9 mm2: 3 x 3 (SON | 8)
6SOT-223: 46 mm2: 7.06 x 6.5 (SOT-223 | 6)
5SOT-23: 5 mm2: 1.6 x 2.9 (SOT-23 | 5)    
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     32     1     30     0.4     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     32     1     75     0.4     8SON: 9 mm2: 3 x 3 (SON | 8)
6SOT-223: 46 mm2: 7.06 x 6.5 (SOT-223 | 6)
5SOT-23: 5 mm2: 1.6 x 2.9 (SOT-23 | 5)