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NCP161
(Rev.:2015)

450 mA, Ultra-Low Noise and High PSRR LDO Regulator for RF and Analog Circuits

ON Semiconductor 

NCP161

TYPICAL CHARACTERISTICS

IOUT

IOUT

tRISE = 1 ms

tFALL = 1 ms

VOUT

VIN = 4.3 V, VOUT = 3.3 V

CIN = 1 mF (MLCC)

COUT = 1 mF (MLCC)

4 ms/div

Figure 43. Load Transient Response −

1 mA to 450 mA − VOUT = 3.3 V

VOUT

VIN = 4.3 V, VOUT = 3.3 V

CIN = 1 mF (MLCC)

COUT = 1 mF (MLCC)

20 ms/div

Figure 44. Load Transient Response −

450 mA to 1 mA − VOUT = 3.3 V

IOUT

tRISE = 1 ms

VOUT

VIN = 5.5 V, VOUT = 5.14 V

CIN = 1 mF (MLCC)

COUT = 1 mF (MLCC)

4 ms/div

Figure 45. Load Transient Response −

1 mA to 450 mA − VOUT = 5.14 V

Short Circuit Event

Overheating

TSD Cycling

IOUT

tFALL = 1 ms

VOUT

VIN = 5.5 V, VOUT = 5.14 V

CIN = 1 mF (MLCC)

COUT = 1 mF (MLCC)

20 ms/div

Figure 46. Load Transient Response −

450 mA to 1 mA − VOUT = 5.14 V

VEN

IOUT

VOUT Thermal Shutdown

VIN = 5.5 V

VOUT = 3.3 V

CIN = 1 mF (MLCC)

COUT = 1 mF (MLCC)

10 ms/div

Figure 47. Short Circuit and Thermal

Shutdown

VOUT

COUT = 4.7 mF

COUT = 1 mF

VIN = 3.8 V

VOUT = 2.8 V

CIN = 1 mF (MLCC)

400 ms/div

Figure 48. Enable Turn−off

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