L5991 查看數據表（PDF） - STMicroelectronics

零件编号

产品描述 (功能)

比赛名单

L5991

PRIMARY CONTROLLER WITH STANDBY

STMicroelectronics 

L5991 - L5991A

Figure 3. Quiescent current vs. input voltage.

Iq [mA]

9 .0

8 .5

8 .0

V 14 = 0, V5 = V ref

R t = 4.5Koh m ,T j = 25 °C

1Mhz

500Khz

300Khz

100Khz

7 .5

7 .0

8

10 12 14 16 18 20 22 24

Vcc [V]

Figure 5. Quiescent current vs. input voltage

and switching frequency.

Iq [mA]

36

Co = 1nF, Tj = 25°C

30

DC = 100%

24

1MHz

18

500KHz

300KHz

12

100KHz

6

0

8

10

12

14

16

18

20

22

Vcc [V]

Figure 7. Reference voltage vs. load current.

Vref [V]

5.1

Figure 4. Quiescent current vs. input voltage

and switching frequency.

Iq [m A]

36

30

C o = 1 nF, T j = 25°C

DC = 0%

24

18

12

6

1M Hz

500KHz

300KHz

100KHz

0

8

10

12

14

16

18

20

22

Vcc [V]

Figure 6. IC Consumption vs. Temperature.

[mA]

100

10

Quiescent current

Vcc =15V, after turn-on

RT=13.3 kΩ, CT=1nF

1

DC = 0

Operating current

Vcc =15V, after turn-on

RT=13.3kΩ, CT=1nF

DC=75%, Co=1nF

0.1

0.01

-50 -25

Start-up current

Vc=Vcc= Vccon-0.5V, before turn-on

0 25 50 75 100 125 150

Junction temperature [˚C]

Figure 8. Vref vs. junction temperature.

Vref [V])

5.1

5.05

5

Vcc=15V

Tj = 25°C

5.05

5

Vcc = 15V

Iref = 1mA

4.95

4.95

4.9

0

5

10

15

20

25

4.9

-50 -25 0 25 50 75 100 125 150

Iref [mA]

Tj (°C)

5/23

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