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ISL78228ARZ-T Datasheet(PDF) 7 Page - Intersil Corporation

Part # ISL78228ARZ-T
Description  Dual 800mA Low Quiescent Current 2.25MHz High Efficiency Synchronous Buck Regulator
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Manufacturer  INTERSIL [Intersil Corporation]
Direct Link  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

ISL78228ARZ-T Datasheet(HTML) 7 Page - Intersil Corporation

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ISL78228
7
FN7849.2
December 4, 2013
FIGURE 8. VOUT REGULATION vs LOAD 2.25MHz 1.5VOUT
FIGURE 9. VOUT REGULATION vs LOAD 2.25MHz 1.8VOUT
FIGURE 10. VOUT REGULATION vs LOAD 2.25MHz 2.5VOUT
FIGURE 11. VOUT REGULATION vs LOAD 2.25MHz 3.3VOUT
FIGURE 12. OUTPUT VOLTAGE REGULATION vs VIN 1.8VOUT
PWM MODE
FIGURE 13. OUTPUT VOLTAGE REGULATION vs VIN 1.8VOUT
PFM MODE
Typical Operating Performance
Unless otherwise noted, operating conditions are: TA = +25°C,
VIN = 2.75V to 5.5V, EN = VIN, L1 = L2 = 2.2µH, C1 = 10µF, C2 = C4 = 10µF, VOUT1 = 2.5V, VOUT2 = 1.8V, IOUT1 =IOUT2 =
0A to 800mA. (Continued)
1.50
1.51
1.52
1.53
1.54
1.55
1.56
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
OUTPUT LOAD (A)
3.3V VIN PWM
5VIN PWM MODE
5 VIN PFM MODE
3.3V VIN PFM
1.78
1.79
1.80
1.81
1.82
1.83
1.84
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
OUTPUT LOAD (A)
3.3V VIN PWM
3.3V VIN PFM
5 VIN PFM MODE
5VIN PWM MODE
2.49
2.50
2.51
2.52
2.53
2.54
2.55
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
OUTPUT LOAD (A)
5V VIN PFM
5V VIN PWM
3.3V VIN PWM
3.3V VIN PFM
3.30
3.32
3.34
3.36
3.38
3.40
3.42
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
OUTPUT LOAD (A)
5V VIN PFM
5V VIN PWM
1.77
1.78
1.79
1.80
1.81
1.82
1.83
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
INPUT VOLTAGE (V)
0.8A LOAD PWM
0.4A LOAD PWM
0A LOAD PWM
1.77
1.78
1.79
1.80
1.81
1.82
1.83
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
INPUT VOLTAGE (V)
0A LOAD
0.8A LOAD
0.4A LOAD


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