5.6 Typical Characteristics (continued)

over recommended operating temperature range TJ = –40°C to +125°C, VEN = VIN, VIN = VOUT(nom) + 1 V, IOUT = 1 mA, COUT

= 10 μF, CNR = 0.01 μF, VOUT(nom) = 2.8 V (unless otherwise noted). Typical values are at TJ = 25°C.

0

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

100

1 k

10 k

100 k

Frequency (Hz)

VIN = 3.8 V

IOUT = 200 mA

COUT = 10 F

m

CNR = 0.1 F

m

CNR = 0.001 F

m

CNR = 0.0047 F

m

CNR = 0.01 F

m

Legacy chip

Figure 5-7. TPS730 Output Spectral Noise Density vs Frequency

COUT = 10uF (new chip)

Figure 5-8. TPS730 Output Spectral Noise Density vs Frequency

60

50

40

30

20

10

0

0.001

0.01

0.1

C

( F)

m

NR

BW = 100 Hz to 100 kHz

V

= 2.8 V

I

= 200 mA

C

= 10

F

OUT

OUT

OUT

m

Legacy chip

Figure 5-9. Root Mean Square Output Noise vs CNR

0

20

40

60

80

100

120

140

160

180

−40 −25 −10 5

20 35

50 65

80

95 110 125

IOUT = 200 mA

IOUT = 10 mA

VIN = 2.7 V

COUT = 10 F

m

TJ (°C)

Legacy chip

Figure 5-10. TPS730 Dropout Voltage vs Junction Temperature

Te mperature (oC)

-40

-20

0

20

40

60

80

100

120

140

5

10

15

20

25

30

35

40

45

50

55

60

10mA

200mA

New chip

Figure 5-11. TPS730 Dropout Voltage vs Junction Temperature

Legacy chip

Figure 5-12. TPS730 Ripple Rejection vs Frequency

TPS730

SBVS054K – NOVEMBER 2004 – REVISED JUNE 2025

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