TPS797 具有电源正常输出的超低 IQ、50mA LDO 线性稳压器 | 德州仪器 TI.com.cn

TPS797 (正在供货) 具有电源正常输出的超低 IQ、50mA LDO 线性稳压器

 

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描述

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 The usual PNP pass transistor has been replaced by a PMOS pass element.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.

特性

  • 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

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

参数

与其它产品相比 线性稳压器(LDO) 邮件 下载到电子表格中
Part number 立即下单 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)
TPS797 立即下单 Fixed Output     0.05     5.5     1.8     3.3     1.8     1.8
2.85
3
3.3    
SC70 | 5     Power Good     1     -40 to 85     231     600     0.34 | 1ku     Catalog       4     105     0.001     5SC70: 4 mm2: 2.1 x 2 (SC70 | 5)    
TPS706 立即下单 Fixed Output     0.15     6.5     2.7     3.3     1.2     1.2
1.5
1.8
2.5
2.8
3
3.3    
SOT-23 | 5
WSON | 6    
Enable
Reverse Current Protection    
1     -40 to 125     73     190     0.23 | 1ku     Catalog     30     2     245     0.001     5SOT-23: 5 mm2: 1.6 x 2.9 (SOT-23 | 5)
6WSON: 4 mm2: 2 x 2 (WSON | 6)    
TPS7A05 立即下单 Fixed Output     0.2     5.5     1.4     3.3     0.8     0.8
1
1.2
1.5
1.8
1.825
2
2.2
2.5
2.7
2.8
2.85
3
3.1
3.3    
DSBGA | 4
SOT-23 | 3
SOT-23 | 5
X2SON | 4    
Enable
Output Discharge
Foldback Overcurrent Protection    
1     -40 to 125     144.1     180     0.18 | 1ku     Catalog     15.4     2     204     0.001     4DSBGA: 0 mm2: .7 x .7 (DSBGA | 4)
5SOT-23: 5 mm2: 1.6 x 2.9 (SOT-23 | 5)
3SOT-23: 7 mm2: 2.37 x 2.92 (SOT-23 | 3)
4X2SON: 1 mm2: 1 x 1 (X2SON | 4)