NCP1550SN25T1 ON Semiconductor, NCP1550SN25T1 Datasheet - Page 11

• Manufacturer Part Number: NCP1550SN25T1
• Description: IC CTR PFM/PWM DCDC 2.5V TSOT235
• Manufacturer: ON Semiconductor

Specifications of NCP1550SN25T1

• Pwm Type: Voltage Mode
• Number Of Outputs: 1
• Frequency - Max: 690kHz
• Duty Cycle: 100%
• Voltage - Supply: 2.45 V ~ 5.5 V
• Buck: Yes
• Boost: No
• Flyback: No
• Inverting: No
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: No
• Operating Temperature: -40°C ~ 85°C
• Package / Case: TSOT-23-5, TSOT-5, TSOP-5
• Frequency-max: 690kHz
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: NCP1550SN25T1OSTR

700
650
600
550
500
450
2.0
1.6
1.2
0.8
0.4
0
−50
−50
Figure 31. Oscillator Frequency versus Ambient
Figure 29. Off−Stage Current versus Ambient
Upper Trace: Output Voltage Ripple, 100 mV/Division
Lower Trace: Load Current, I
(V
IN
Figure 27. Load Transient Response for
= 5.0 V, I
−25
−25
T
T
A
A
, AMBIENT TEMPERATURE (°C)
, AMBIENT TEMPERATURE (°C)
LOAD
0
0
C
V
Temperature
= 100 mA to 1.0 A, L = 5.6 mH,
OUT
Temperature
OUT
= 33 mF)
25
= 2.5 V
25
1.8 V
LOAD
, 500 mA/Division
50
50
2.5 V
3.3 V
V
IN
1.8 V
75
75
= 5.0 V
3.3 V
2.5 V
http://onsemi.com
100
100
NCP1550
11
450
400
350
300
250
200
70
60
50
40
30
20
−50
Upper Trace: Output Voltage Ripple, 100 mV/Division
Lower Trace: Load Current, I
−50
(V
Figure 30. Operating Current versus Ambient
Figure 32. PWM/PFM Switch ON Time Threshold
Figure 28. Load Transient Response for
IN
= 5.0 V, I
−25
−25
T
2.5 V
A
T
A
versus Ambient Temperature
, AMBIENT TEMPERATURE (°C)
1.8 V
LOAD
, AMBIENT TEMPERATURE (°C)
C
0
V
= 100 mA to 1.0 A, L = 6.8 mH,
OUT
0
Temperature
OUT
2.5 V
3.3 V
= 33 mF)
= 1.8 V
25
LOAD
25
, 500 mA/Division
1.8 V
50
50
3.3 V
V
V
IN
CE
V
IN
= 5.0 V
75
= 5.0 V
= 5.0 V
75
100
100