ncp3030a ON Semiconductor, ncp3030a Datasheet - Page 8

• Manufacturer Part Number: ncp3030a
• Description: Ncp3030a, Ncp3030b Synchronous Pwm Controller
• Manufacturer: ON Semiconductor

1000
950
900
850
800
750
700
650
600
550
500
450
400
Input = 12 V, Output = 3.3 V, Load = 5 A,
CH4 (Purple) = V
CH3 (Green) = VHSDR, CH1 (Blue) = SWN
CH1 = CH3 = CH4: 10 V/div, CH2: 2.0 V/div
Time Scale: 400 ms/div
−40 −25 −10
Figure 17. Startup Waveforms (NCP3030B)
Figure 15. Ramp Valley Voltage vs Temperature
IN
5
, CH2 (Red) = V
TEMPERATURE (°C)
20
35
Figure 19. Current Limit Waveforms (NCP3030B)
TYPICAL PERFORMANCE CHARACTERISTICS
50
Input = 12 V, Output = 3.3 V, Load = 5 A,
CH4 (Purple) = V
CH3 (Green) = VHSDR, CH1 (Blue) = SWN
CH1 = CH3 = CH4: 10 V/div, CH2: 2.0 V/div
Time Scale: 400 ms/div
OUT
65
,
80
95 110 125
IN
http://onsemi.com
, CH2 (Red) = V
8
OUT
17
16
15
14
13
12
11
10
Input = 12 V, Output = 3.3 V, Load = 5 A,
CH4 (Purple) = V
CH3 (Green) = VHSDR, CH1 (Blue) = SWN
CH1 = CH3 = CH4: 10 V/div, CH2: 2.0 V/div
Time Scale: 400 ms/div
Figure 18. Shutdown Waveforms (NCP3030B)
−40 −25 −10
,
Figure 16. ISET Current vs Temperature
IN
5
, CH2 (Red) = V
TEMPERATURE (°C)
20
35
50
OUT
65
,
80
95
110 125