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.

Frequency (Hz)

-20

0

20

40

60

80

10

100

1k

10k

100k

1M

10M

VIN = 3.8V

COUT = 1F

IOUT

10mA

200mA

New chip

Figure 5-13. TPS730 Ripple Rejection vs Frequency

Frequency (Hz)

0

20

40

60

80

10

100

1k

10k

100k

1M

10M

VIN = 3.8V

COUT = 10F

IOUT

10mA

200mA

New chip

Figure 5-14. TPS730 Ripple Rejection vs Frequency

3

Time (ms)

0

60

40

20

80 100

140

120

160 180 200

VIN = 3.8 V

VOUT = 2.8 V

IOUT = 200 mA

COUT = 2.2 F

m

TJ = 25 C

°

1

2

0

0

2

CNR = 0.0047 F

m

CNR = 0.01 F

m

4

CNR = 0.001 F

m

Legacy chip

Figure 5-15. TPS730 Output Voltage, Enable Voltage vs Time

(Start-Up)

Time (

s)

-0.5

0

0.5

1

1.5

2

2.5

3

3.5

4

4.5

0

400

800

1200

1600

2000

VIN

VOUT

VEN

New chip

Figure 5-16. TPS730 Output Voltage, Enable Voltage vs Time

(Start-Up)

Time (ms)

0

30

20

10

40

50

70

60

80

90 100

IOUT = 200 mA

COUT = 2.2 F

m

CNR = 0.01 F

m

0

-20

3.8

dv

dt

0.4 V

ms

20

4.8

=

Legacy chip

Figure 5-17. TPS730 Line Transient Response

New chip

Figure 5-18. TPS730 Line Transient Response

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TPS730

SBVS054K – NOVEMBER 2004 – REVISED JUNE 2025

Copyright © 2025 Texas Instruments Incorporated

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