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NCP1508 Datasheet(PDF) 5 Page - ON Semiconductor

Part No. NCP1508
Description  Up to 500 mA, 1 MHz, High Efficiency Synchronous Step−Down DC−DC Converter in DFN Package
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
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NCP1508 Datasheet(HTML) 5 Page - ON Semiconductor

 
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NCP1508
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ELECTRICAL CHARACTERISTICS (continued) (Vin = 3.6 V, Vo = 1.5 V, TA = 25°C, Fsyn = 600 kHz 50% Duty Cycle square wave
for PWM mode; TA = –30 to 85°C for Min/Max values, unless otherwise noted.
Characteristic
Symbol
Min
Typ
Max
Unit
SYNC PWM Mode Characteristics (continued)
Feedback Voltage Accuracy, Vout Set = 1.0 V CB0 = L, CB1 = L, Iout = 300 mA
Vout
0.950
1.000
1.050
V
Feedback Voltage Accuracy, Vout Set = 1.3 V CB0 = L, CB1 = H, Iout = 300 mA
Vout
1.261
1.300
1.339
V
Feedback Voltage Accuracy, Vout Set = 1.5 V, CB0 = H, CB1 = H, Iout = 300 mA
Vout
1.450
1.500
1.550
V
Feedback Voltage Accuracy, Vout Set = 1.89 V, CB0 = H, CB1 = L, Iout = 300 mA
Vout
1.833
1.890
1.947
V
Line Regulation, Vin = 2.7 V−3.6 V, Iout = 100 mA
−15
+15
mV
Line Regulation, Vin = 3.6 V−5.2 V, Iout = 100 mA
−15
+15
mV
Load Regulation, Iout = 100 mA−300 mA
−15
+15
mV
Load Transient Response, 10 to 100 mA Load Step
Vout
50
mV
Line Transient Response, Iout = 100 mA, 3.0 to 3.6 Vin Line Step
Vout
"5.0
mVpp
PWM Mode with Internal Oscillator Characteristics
Switching P−FET Current Limit
Ilim
800
mA
Duty Cycle (Note 2)
DC
100
%
Minimum On Time
Ton(min)
75
nsec
Internal Oscillator Frequency − TA = 25°C
–30°C ≤ TA ≤ 85°C
Fosc
760
700
980
980
1240
1240
kHz
RDS(on) Switching P−FET and N_FET
RDS(on)
0.23
W
Switching P−FET and N−FET Leakage Current
Ileak
0
10
mA
Output Overvoltage Threshold
Vo
5.0
%
Feedback Voltage Accuracy, Vout Set = 1.0 V, CB0 = L, CB1 = L,
Iout = 300 mA
Vout
0.950
1.000
1.050
V
Feedback Voltage Accuracy, Vout Set = 1.3 V, CB0 = L, CB1 = H,
Iout = 300 mA
Vout
1.261
1.300
1.339
V
Feedback Voltage Accuracy, Vout Set = 1.5 V, CB0 = H, CB1 = H,
Iout = 300 mA
Vout
1.450
1.500
1.550
V
Feedback Voltage Accuracy, Vout Set = 1.89 V, CB0 = H CB1 = L,
Iout = 300 mA
Vout
1.833
1.890
1.947
V
Line Regulation, Vin = 2.7 V−3.6 V, Iout = 100 mA
−15
+15
mV
Line Regulation, Vin = 3.6 V−5.2 V, Iout = 100 mA
−15
+15
mV
Load Regulation, Iout = 100 mA−300 mA
−15
+15
mV
Load Transient Response, 10 to 100 mA Load Step
Vout
50
mV
Line Transient Response, Iout = 100 mA, 3.0 to 3.6 Vin Line Step
Vout
"5.0
mVpp
Pulsed Mode Characteristics
Peak Current Limit
Ilim
200
mA
Output Current
Iout
0.05
30
mA
Output Ripple Voltage, Iout = 100 mA
Vout
22
100
mV
Feedback Voltage Accuracy, Vout Set = 1.0 V, CB0 = L, CB1 = L
Vout
0.950
1.000
1.050
V
Feedback Voltage Accuracy, Vout Set = 1.3 V, CB0 = L, CB1 = H
Vout
1.261
1.300
1.339
V
Feedback Voltage Accuracy, Vout Set = 1.5 V, CB0 = H, CB1 = H
Vout
1.450
1.500
1.550
V
Feedback Voltage Accuracy, Vout Set = 1.89 V, CB0 = H, CB1 = L
Vout
1.833
1.890
1.947
V
2. Maximum value is guaranteed by design.


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