TPS797 Ultralow IQ, 50mA LDO Linear Regulators with Power Good Output | TI.com

TPS797 (ACTIVE)

Ultralow IQ, 50mA LDO Linear Regulators with Power Good Output

 

Description

The TPS797xx family of low-dropout voltage regulators (LDOs) offers the benefits of low-dropout voltage and ultra-low-power operation. The device is stable with any capacitor greater than 0.47-µF. Therefore, implementations of this device require very little board space due to the miniaturized packaging and potentially small output capacitor. In addition, the family includes an integrated open drain active-high power good (PG) output. Intended for use in microcontroller-based, battery-powered applications, the TPS797xx family low dropout and ultra-low-power operation result in a significant increase in system battery operating life. The small packaging minimizes consumption of board space.

The device is enabled when the applied voltage exceeds the minimum input voltage. The usual PNP pass transistor has been replaced by a PMOS pass element. Because the PMOS pass element behaves as a low-value resistor, the dropout voltage is very low (typically, 105 mV at 10-mA of load current), and is directly proportional to the load current. The quiescent current is ultra-low (1.2-µA, typically) and is stable over the entire range of output load current (0 mA to 50 mA). When properly configured with a pullup resistor, the PG output can implement a power-on reset or low-battery indicator.

Features

  • 50-mA Low-Dropout Regulator
  • Ultra-Low 1.2-µA Quiescent Current at 10 mA
  • 5-Pin SC70 (DCK) Package
  • Integrated Power Good Output
  • Stable With Any Capacitor Greater Than 0.47 µF
  • Typical Dropout Voltage of 105 mV at 10 mA (TPS79733)
  • Over-Current Limitation
  • Operating Junction Temperature Range of –40°C to 85°C

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Parametrics Compare all products in Linear regulators (LDO)

 
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)
TPS797 TPS706 TPS7A05
Fixed Output     Fixed Output     Fixed Output    
0.05     0.15     0.2    
5.5     6.5     5.5    
1.8     2.7     1.4    
3.3     3.3     3.3    
1.8     1.2     0.8    
1.8
2.85
3
3.3    
1.2
1.5
1.8
2.5
2.8
3
3.3    
0.8
1.0
1.2
1.5
1.8
2.5
2.85
3.3    
SC70 | 5     SOT-23 | 5
WSON | 6    
DSBGA | 4
SOT-23 | 5
X2SON | 4    
Power Good     Enable
Reverse Current Protection    
Enable
Output Discharge    
1     1     1    
-40 to 85     -40 to 125     -40 to 125    
231     73     144.1    
600     190     227    
0.34 | 1ku     0.23 | 1ku     0.18 | 1ku    
Catalog     Catalog     Catalog    
Ceramic     Ceramic     Ceramic    
  30     15.4    
4     2     1.5    
105     245     204    
0.001     0.001     0.001    
5SC70: 4 mm2: 2.1 x 2 (SC70 | 5)     5SOT-23: 8 mm2: 2.8 x 2.9 (SOT-23 | 5)
See datasheet (WSON)    
See datasheet (DSBGA)
5SOT-23: 8 mm2: 2.8 x 2.9 (SOT-23 | 5)
4X2SON: 1 mm2: 1 x 1 (X2SON | 4)    

Design tool

WEBENCH® Designer TPS797

  Min   Max Range
Vin  V 1.8 to 5.5V
Product Option
Vout  V
Iout  A ≤ 0.05A
Ambient Temp  °C -40.0 to 85.0°C