TPS732 (ACTIVE)

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

 

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

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Parametrics Compare all products in Single Channel LDO

 
Iout (Max) (A)
Output Options
Vin (Min) (V)
Vin (Max) (V)
Fixed Output Options (V)
Vout (Min) (V)
Vout (Max) (V)
Iq (Typ) (mA)
Vdo (Typ) (mV)
Accuracy (%)
Noise (uVrms)
PSRR @ 100KHz (dB)
Output Capacitor Type
Rating
Operating Temperature Range (C)
Pin/Package
TPS732 TPS731 TPS736
0.25    0.15    0.4   
Adjustable Output
Fixed Output   
Adjustable Output
Fixed Output   
Adjustable Output
Fixed Output   
1.7    1.7    1.7   
5.5    5.5    5.5   
1.3
1.5
1.6
1.8
1.9
2.5
3
3.3
5   
1.25
1.5
1.8
2.5
3
3.1
3.2
3.3
5   
1.25
1.5
1.6
1.8
1.9
2.5
3
3.2
3.3
4.3   
1.2    1.2    1.2   
5.5    5.5    5.4   
0.4    0.4    0.4   
40    30    75   
1    1    1   
30    30    30   
32    32    32   
Cap Free
Ceramic   
Cap Free
Ceramic   
Cap Free
Ceramic   
Catalog    Catalog    Catalog   
-40 to 125    -40 to 125    -40 to 125   
5SOT-23
6SOT-223
8SON   
5SOT-23    5SOT-23
6SOT-223
8SON   

Other qualified versions of TPS732

Version Part Number Definition
Automotive TPS732-Q1 Q100 devices qualified for high-reliability automotive applications targeting zero defects

WEBENCH® Designer TPS732

  Min   Max Range
Vin  V 1.7 to 5.5V
Product Option
Vout  V
Iout  A ≤ 0.25A
Ambient Temp  °C -40.0 to 125.0°C