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| 型号： | CAV4201TD-GT3 |
| 厂商： | ON Semiconductor |
| 文件页数： | 6/12页 |
| 文件大小： | 0K |
| 描述： | IC LED DVR 350MA STP-DN TSOT23-5 |
| 标准包装： | 3,000 |
| 系列： | * |
CAV4201
TYPICAL OPERATION CHARACTERISTICS
(V IN = 13 V, I LED = 300 mA, L = 22 m H, C 1 = 4.7 m F, C 2 = 10 m F, T AMB = 25 ° C unless otherwise specified)
Figure 20. RSET Transient Response
Figure 21. Line Transient Response
(10 V to 13 V)
External Component Selection
Table 4 provides the recommended external components L and C2 that offer the best performance relative to the LED current
accuracy, LED ripple current, switching frequency and component size.
Table 4. EXTERNAL COMPONENT SELECTION
1 LED
2 LEDs
LED Current (mA)
≥ 150
< 150
L Inductor ( m H)
22
33
C2 Capacitor ( m F)
4.7
4.7
L Inductor ( m H)
22
47
C2 Capacitor ( m F)
4.7
2.2
47
10
NOTE:
Larger C2 capacitor values allow to reduce further the LED ripple current if needed.
Table 5. INDUCTOR SELECTION DEPENDING ON VBAT SUPPLY VOLTAGE
VBAT Supply Voltage (V)
< 26
≥ 26
Minimum Inductor L ( m H)
22
33
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