Datasheet

22 pF
15 pF
15 pF
OUTPUT VOLTAGE
PROGRAMMING GUIDE
OUTPUT
VOLTAGE
R1 R2
2.5 V
3.3 V
3.6 V
C1
31.6 kΩ
51 kΩ
59 kΩ
30.1 kΩ
30.1 kΩ
30.1 kΩ
V
O
V
I
OUT
FB
R1
R2
GND
EN
IN
≤ 0.7 V
≥ 2 V
TPS79301
1 µF
BYPASS
0.01 µF
1 µF
C1
TPS79301-Q1, TPS79318-Q1, TPS79325-Q1
TPS79328-Q1, TPS793285-Q1, TPS79330-Q1
TPS79333-Q1, TPS793475-Q1
SGLS162H –APRIL 2003–REVISED JANUARY 2013 www.ti.com
Figure 23. TPS79301 Adjustable LDO Regulator Programming
Regulator Protection
The TPS793xx features internal current limiting and thermal protection. During normal operation, the TPS793xx
limits output current to approximately 400 mA. When current limiting engages, the output voltage scales back
linearly until the overcurrent condition ends. While current limiting is designed to prevent gross device failure,
care should be taken not to exceed the power dissipation ratings of the package or the absolute maximum
voltage ratings of the device. If the temperature of the device exceeds approximately 165°C, thermal-protection
circuitry shuts it down. Once the device has cooled down to below approximately 140°C, regulator operation
resumes.
The TPS793xx PMOS-pass transistor has a built-in back diode that conducts reverse current when the input
voltage drops below the output voltage (for example, during power-down). Current is conducted from the output
to the input and is not internally limited. If extended reverse voltage operation is anticipated, external limiting
might be appropriate.
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Product Folder Links: TPS79301-Q1 TPS79318-Q1 TPS79325-Q1 TPS79328-Q1 TPS793285-Q1 TPS79330-Q1
TPS79333-Q1