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參數(shù)資料
| 型號： | NCP5604B |
| 廠商： | ON SEMICONDUCTOR |
| 英文描述： | High Efficiency White LED Driver(高效白色LED驅(qū)動器) |
| 中文描述： | 高效率白光LED驅(qū)動器（高效白色發(fā)光二極管驅(qū)動器） |
| 文件頁數(shù)： | 7/15頁 |
| 文件大?。?/td> | 359K |
| 代理商： | NCP5604B |
NCP5604A, NCP5604B
http://onsemi.com
7
POWER SUPPLY SECTION
(Typical values are referenced to T
A
= +25
°
C, Min & Max values are referenced 40
°
C to +85
°
C ambient
temperature, operating conditions 2.85 V < Vbat < 5.5 V, unless otherwise noted.)
Pin
Symbol
Rating
Min
Typ
Max
Unit
1
V
bat
Power Supply
2.7
5.5
V
12
I
out
Continuous DC Current in the Load (Note 8)
@ Vf = 3.2 V, 3.3 V < Vbat < 5.5 V (Total Iout = 4*LED)
100
mA
12
Isch
Continuous Output Short Circuit Current
40
150
mA
12
V
out
Output Voltage Compliance (OVP)
4.8
6.0
V
12
Tstart
DCDC Start Time (Cout = 1.0 F)
from Vout = 0 V to full load operation, @ Vbat = nominal
100
s
1
I
stdb
Standby Current, @ Iout = 0 mA, EN = GND
Vbat = 3.6 V
Vbat = 4.2 V
0.3
0.4
3.0
5.0
A
1
I
op
Operating Current, @Iout = 0 mA, EN = H
2.85 V < Vbat < 5.5 V
Vbat = 3.6 V
1.0
1.5
mA
5, 6, 7, 8
I
MAT
Output LED to LED Current Matching, @ Vbat = 3.6 V,
I
LED
= 20 mA, LED1 to LED4 are identical (Note 9)
2.0
0.2
+2.0
%
5, 6, 7, 8
I
TOL
Output Current Tolerance (Note 9)
@ 3.2 V < Vbat < 4.2 V, I
LED
= 20 mA
5.0
1.0
+5.0
%
Fpwr
Charge Pump Operating Frequency
25
°
C < T
A
< 85
°
C
0.85
1.0
1.15
MHz
T
SD
Thermal Shutdown Protection
160
°
C
T
SDH
Thermal Shutdown Protection Hysteresis
30
°
C
E
PWR
Efficiency (Note 9)
LED1 to LED4 = 5.0 mA, Vf = 2.95 V (Total = 20 mA), Vbat = 3.2 V
LED1 to LED4 = 25 mA, Vf = 3.3 V (Total = 100 mA), Vbat = 3.8 V
87
85
%
8. The total output current is evenly distributed across the external LED.
9. LED4 is not connected in the NCP5604B version.
10.The NCP5604B controls 75 mA in total in the three current mirrors, the extra 25 mA available current from the DCDC converter being available
for external purpose.
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