TPS72 250mA Micropower Low-Dropout (LDO) Voltage Regulator | TI.com

TPS72 (ACTIVE) 250mA Micropower Low-Dropout (LDO) Voltage Regulator

250mA Micropower Low-Dropout (LDO) Voltage Regulator - TPS72
Datasheet
 

Recommended alternative parts

  • TPS7A25  -  An 18-V, 300-mA LDO regulator with power-good and ultra-low IQ (2.5 μA)

Description

The TPS72xx family of low-dropout (LDO) voltage regulators offers the benefits of low-dropout voltage, micropower operation, and miniaturized packaging. These regulators feature extremely low dropout voltages and quiescent currents compared to conventional LDO regulators. Offered in small-outline integrated-circuit (SOIC) packages and 8-terminal thin shrink small-outline (TSSOP), the TPS72xx series devices are ideal for cost-sensitive designs and for designs where board space is at a premium.

A combination of new circuit design and process innovation has enabled the usual pnp pass transistor to be replaced by a PMOS device. Because the PMOS pass element behaves as a low-value resistor, the dropout voltage is very low - maximum of 85 mV at 100 mA of load current (TPS7250) - and is directly proportional to the load current (see Figure 1). Since the PMOS pass element is a voltage-driven device, the quiescent current is very low (300 uA maximum) and is stable over the entire range of output load current (0 mA to 250 mA). Intended for use in portable systems such as laptops and cellular phones, the low-dropout voltage and micropower operation result in a significant increase in system battery operating life.

The TPS72xx also features a logic-enabled sleep mode to shut down the regulator, reducing quiescent current to 0.5 uA maximum at TJ = 25°C. Other features include a power-good function that reports low output voltage and may be used to implement a power-on reset or a low-battery indicator.

The TPS72xx is offered in 2.5-V, 3-V, 3.3-V, 4.85-V, and 5-V fixed-voltage versions and in an adjustable version (programmable over the range of 1.2 V to 9.75 V). Output voltage tolerance is specified as a maximum of 2% over line, load, and temperature ranges (3% for adjustable version).

Features

  • Available in 5-V, 4.85-V, 3.3-V, 3.0-V, and 2.5-V Fixed-Output and Adjustable Versions
  • Dropout Voltage <85 mV Max at
    IO = 100 mA (TPS7250)
  • Low Quiescent Current, Independent of Load, 180 uA Typ
  • 8-Pin SOIC and 8-Pin TSSOP Package
  • Output Regulated to ±2% Over Full Operating Range for Fixed-Output Versions
  • Extremely Low Sleep-State Current,
    0.5 uA Max
  • Power-Good (PG) Status Output

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 PSRR @ 100 KHz (dB) Accuracy (%) Dropout voltage (Vdo) (Typ) (mV) Iq (Typ) (mA) Package size: mm2:W x L (PKG)
TPS72 Order now Adjustable Output
Fixed Output    
0.25     10     3     9.75     1.2     2.5
3
3.3
4.8
5    
PDIP | 8
SOIC | 8
TSSOP | 8    
Enable
Power Good    
1     -40 to 125
-55 to 150    
114     190     0.78 | 1ku     Catalog     8     2     560     0.18     See datasheet (PDIP)
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)
8TSSOP: 19 mm2: 6.4 x 3 (TSSOP | 8)    
TPS71 Order now Adjustable Output
Fixed Output    
0.5     10     2.5     9.75     1.2     3.3
4.8
5    
PDIP | 8
SOIC | 8
TSSOP | 20    
Enable
Power Good    
1     -40 to 125     106     89     1.05 | 1ku     Catalog     3     3     235     0.28     See datasheet (PDIP)
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)
20TSSOP: 42 mm2: 6.4 x 6.5 (TSSOP | 20)    
TPS73 Order now Adjustable Output
Fixed Output    
0.5     10     2.47     9.75     1.2     2.5
3
3.3
4.8
5    
PDIP | 8
SOIC | 8
TSSOP | 20    
Enable
Power Good    
1     -40 to 125
-40 to 85    
106     74     1.32 | 1ku     Catalog     8     2     270     0.34     See datasheet (PDIP)
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)
20TSSOP: 42 mm2: 6.4 x 6.5 (TSSOP | 20)