TPS71 500mA 低压降稳压器 | 德州仪器 TI.com.cn

TPS71 (正在供货) 500mA 低压降稳压器

500mA 低压降稳压器 - TPS71
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描述

The TPS71xx integrated circuits are a family of micropower low-dropout (LDO) voltage regulators. An order of magnitude reduction in dropout voltage and quiescent current over conventional LDO performance is achieved by replacing the typical pnp pass transistor with a PMOS device.

Because the PMOS device behaves as a low-value resistor, the dropout voltage is very low (maximum of 32 mV at an output current of 100 mA for the TPS7150) and is directly proportional to the output current (see Figure 1). Additionally, since the PMOS pass element is a voltage-driven device, the quiescent current is very low and remains independent of output loading (typically 285 µA over the full range of output current, 0 mA to 500 mA). These two key specifications yield a significant improvement in operating life for battery-powered systems. The LDO family also features a sleep mode; applying a TTL high signal to EN (enable) shuts down the regulator, reducing the quiescent current to 0.5 µA maximum at TJ = 25°C.

Voltage – Power good (PG) reports low output voltage and can be used to implement a power-on reset or a low-battery indicator.

The TPS71xx is offered in 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). The TPS71xx family is available in PDIP (8 pin), SO (8 pin), and TSSOP (20-pin) packages. The TSSOP has a maximum height of 1,2 mm.

特性

  • Available in 5-V, 4.85-V, and 3.3-V Fixed-Output and Adjustable Versions
  • Very Low-Dropout Voltage ...Maximum of 32 mV at IO = 100 mA (TPS7150)
  • Very Low Quiescent Current – Independent of Load . . . 285 µA Typ
  • Extremely Low Sleep-State Current
       0.5 µA Max
  • 2% Tolerance Over Specified Conditions For Fixed-Output Versions
  • Output Current Range of 0 mA to 500 mA
  • TSSOP Package Option Offers Reduced Component Height for Space-Critical Applications
  • Power-Good (PG) Status Output

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)
TPS71 立即下单 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)    
TPS72 立即下单 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)    
TPS73 立即下单 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)