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1.5-A, 20-V, ultra-low-dropout voltage regulator with reverse current protection & enable

NEW - Custom reel may be available
Inventory: 31,408

Quality information

RoHS Yes
Lead finish / Ball material NIPDAU
MSL rating / Peak reflow Level-2-260C-1 YEAR
Material content View
DPPM / MTBF / Fit rate View
Qualification summary View
Ongoing reliability monitoring View
Device marking View

Packaging information

Package | Pins Package qty | Carrier Operating temperature range (°C)
SOT-223 (DCQ) | 6 2,500 | LARGE T&R
Custom reel may be available
-40 to 125
Package | Pins SOT-223 (DCQ) | 6
Package qty | Carrier 2,500 | LARGE T&R
Custom reel may be available
Operating temperature range (°C) -40 to 125
View TI packaging information

Features for the TPS7A45

  • Optimized for Fast Transient Response
  • Output Current: 1.5 A
  • High Output Voltage Accuracy: 1% at 25°C
  • Dropout Voltage: 300 mV
  • Low Noise: 35 µVRMS (10 Hz to 100 kHz)
  • High Ripple Rejection: 68 dB at 1 kHz
  • 1-mA Quiescent Current
  • No Protection Diodes Needed
  • Controlled Quiescent Current in Dropout
  • Fixed Output Voltages: 1.5 V, 1.8 V, 2.5 V, 3.3 V
  • Adjustable Output from 1.21 V to 20 V (TPS7A4501 Only)
  • Less Than 1-µA Quiescent Current in Shutdown
  • Stable With 10-µF Ceramic Output Capacitor
  • Reverse-Battery Protection
  • Reverse Current Protection

Description for the TPS7A45

The TPS7A45xx devices are low-dropout (LDO) regulators optimized for fast transient response. The device can supply 1.5 A of output current with a dropout voltage of 300 mV. Operating quiescent current is 1 mA, dropping to less than 1 µA in shutdown. Quiescent current is well controlled; it does not rise in dropout as with many other regulators. In addition to fast transient response, the TPS7A45xx regulators have very-low output noise, which makes them ideal for sensitive RF supply applications.

Output voltage range is from 1.21 to 20 V. The TPS7A45xx regulators are stable with output capacitance as low as 10 µF. Small ceramic capacitors can be used without the necessary addition of ESR as is common with other regulators. Internal protection circuitry includes reverse-battery protection, current limiting, thermal limiting, and reverse-current protection. The devices are available in fixed output voltages of 1.5 V, 1.8 V, 2.5 V, 3.3 V, and as an adjustable device with a 1.21-V reference voltage.


Qty Price (USD)
1-99 $2.311
100-249 $2.025
250-999 $1.420
1,000+ $1.144

Additional package qty | carrier options

Package qty | Carrier 250 | SMALL T&R
Inventory 17,766
Qty | Price (USD) 1ku | $1.276 1-99 $2.578 100-249 $2.259 250-999 $1.584 1,000+ $1.276