2

2.5

3

3.5

4

4.5

5

5.5

6

VIN

20

30

40

50

60

70

80

90

100

TJ = 125°C

TJ = 25°C

TJ = -40°C

2

2.5

3

3.5

4

4.5

5

5.5

6

VIN

TJ = 125°C

TJ = 25°C

20

30

40

50

60

70

80

90

100

TJ = -40°C

0

50

75

100

125

150

LOAD CURRENT (mA)

0

10

20

30

40

50

80

TJ = 125°C

TJ = 25°C

TJ = -40°C

25

60

70

-40

-25

0

25

50

75

100

125

TEMPERATURE (°C)

-2.00

-1.50

-1.00

-0.50

0.00

0.50

1.00

1.50

2.00

LP3990-Q1

SNVSA66A – OCTOBER 2014 – REVISED DECEMBER 2015

www.ti.com

6.7 Timing Requirements

MIN

NOM(1)

MAX(2)

UNIT

VOUT = 0.8 V

80

150

From VEN ↑ VIH to

TON

Turnon time(3)

VOUT 95% level

VOUT = 1.5 V

105

200

µs

(VIN(MIN) to 6 V)

VOUT = 3.3 V

175

250

Line transient response

Trise = Tfall = 30 µs

(3),

mV (pk-

8

16

(

ΔVOUT)

ΔVIN = 600 mV

pk)

Transient

Trise = Tfall = 1 µs

(3),

response

Load transient response

IOUT = 1 mA to 150 mA

55

100

mV

(

ΔVOUT)

COUT = 1 µF

(1)

Nominal values apply for TJ = 25°C.

(2)

Maximum limits apply over the full operating junction temperature (TJ) range of −40°C to 125°C.

(3)

This electrical specification is verified by design.

6.8 Typical Characteristics

Unless otherwise specified, CIN = 1-µF ceramic, COUT = 0.47-µF ceramic, VIN = VOUT(NOM) + 1 V, TA = 25°C, VOUT(NOM) = 1.5 V;

VEN = VIN.

Figure 1. Output Voltage Change vs Temperature

Figure 2. Ground Current vs Load Current

ILOAD = 0 mA

ILOAD = 1 mA

Figure 3. Ground Current vs VIN

Figure 4. Ground Current vs VIN

6

Submit Documentation Feedback

Copyright © 2014–2015, Texas Instruments Incorporated

Product Folder Links: LP3990-Q1