双通道、正负 150mA 输出 LDO - TPS7A39

TPS7A39 (正在供货)

双通道、正负 150mA 输出 LDO

 

Sample Availability

Prototype samples are available (PTPS7A3901DSC). Order Now

描述

The TPS7A39 device is a dual, monolithic, high-PSRR, positive and negative low-dropout (LDO) voltage regulator capable of sourcing (and sinking) up to 150 mA of current. The regulated outputs can be independently and externally adjusted to symmetrical or asymmetrical voltages, making this device an ideal dual, bipolar power supply for signal conditioning.

Both positive and negative outputs of the TPS7A39 ratiometrically track each other during startup to mitigate floating conditions and other power-supply sequencing issues common in dual-rail systems. The negative output can regulate up to 0 V, extending the common-mode range for single-supply amplifiers. The TPS7A39 also features high PSRR to eliminate power-supply noise, such as switching noise, that can compromise signal integrity.

Both regulators are controlled with a single positive logic enable pin for interfacing with standard digital logic. A capacitor-programmable soft-start function controls in-rush current and start-up time. The internal reference voltage of the TPS7A39 can be overridden with an external reference to enable precision outputs, output voltage margining, or to track other power supplies. Additionally, the TPS7A39 has a buffered reference output that can be used as a voltage reference for other components in the system.

These features make the TPS7A39 a robust, simplified solution to power operational amplifiers, digital-to-analog converters (DACs), and other precision analog circuitry.

特性

  • Positive and Negative LDOs in One Package
  • Wide Input Voltage Range: ±3.3 V to ±33 V
  • Wide Output Voltage Range:
    • Positive Range: 1.2 V to 30 V
    • Negative Range: –30 V to 0 V
  • Output Current: 150 mA per Channel
  • Monotonic Start-Up Tracking
  • High Power-Supply Rejection Ratio (PSRR):
    • 69 dB (120 Hz)
    • ≥ 50 dB (10 Hz to 2 MHz)
  • Output Voltage Noise: 21 µVRMS (10 Hz–100 kHz)
  • Buffered 1.2-V Reference Output
  • Stable With a 10-µF or Larger Output Capacitor
  • Single Positive-Logic Enable
  • Adjustable Soft-Start In-Rush Control
  • 3-mm × 3-mm, 10-Pin WSON Package
  • Low Thermal Resistance: RθJA = 44.4°C/W
  • Operating Temperature Range: –40 to +125°C

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参数 与其它产品相比 多通道 LDO

 
Regulated Outputs (#)
Output Options
Features
Iout (Max) (A)
Iout2 (A)
Vin (Min) (V)
Vin (Max) (V)
Vout (Min) (V)
Vout (Max) (V)
Vout2 (Min) (V)
Vout2 (Max) (V)
Output Capacitor Type
Iq (Typ) (mA)
Vdo (Typ) (mV)
PSRR @ 100KHz (dB)
Accuracy (%)
Noise (uVrms)
Rating
Operating Temperature Range (C)
Pin/Package
TPS7A39
2   
Adjustable Output   
Enable
Soft Start   
0.15   
0.15   
-33   
33   
1.2   
30   
-30   
0   
Ceramic   
0.075   
238   
56   
2.5   
15   
Catalog   
-40 to 125   
10WSON