参数资料
型号: NCP5009DMR2
厂商: ON Semiconductor
文件页数: 8/17页
文件大小: 0K
描述: IC LED DRVR WHT BCKLT 10MICROSMD
产品变化通告: Product Discontinuation 30/Jun/2004
标准包装: 1
拓扑: PWM,升压(升压)
输出数: 1
内部驱动器:
类型 - 主要: 背光
类型 - 次要: 白色 LED
频率: 5MHz
电源电压: 2.7 V ~ 6 V
输出电压: 15V
安装类型: 表面贴装
封装/外壳: 10-TFSOP,10-MSOP(0.118",3.00mm 宽)
供应商设备封装: 10-微型
包装: 剪切带 (CT)
工作温度: -25°C ~ 85°C
其它名称: NCP5009DMR2OSCT
NCP5008, NCP5009
TYPICAL OPERATING CHARACTERISTICS
Condition: Typical Application: L = 22 m H, Cin = 10 m F, Cout = 2.2 m F, R1 = 30 k W
90
85
V bat = 4.2 V
100
95
V bat = 6.0 V
80
V bat = 3.6 V
90
5.0 V
4.2 V
75
70
65
60
V bat = 3.0 V
85
80
75
70
3.0 V
3.6 V
0
5
10
15
20
25
30
35
0
10
20
30
40
50
60
70
I LED (mA)
Figure 15. Efficiency vs Load Current @ 2 LEDS
(V load = 2*Vf ? 7.1 V)
I LED (mA)
Figure 16. Efficiency vs Load Current @ 4 LEDS
(V load = 2 strings of 2 LEDs in series = 7.1 V)
Operating Description
Output
t CLKmin
V bat
ON
90%
50%
10%
tf
tr
OFF
Input
0.30* V bat
0.70* V bat
V bat
Figure 17. Digital Timing Definitions
Input Schmitt Triggers
All the Logic Input pins have built?in Schmitt trigger
circuits to prevent the NCP5008/NCP5009 against
uncontrolled operation. The typical dynamic characteristics
of the related pins are depicted in Figure 18.
The output signal is guaranteed to go High when the
input voltage is above 0.70*V bat , and will go Low when the
input voltage is below 0.30*V bat .
Local Mode
When the system operate in a Local Mode (Pin 6,
Figure 18. Typical Schmitt Trigger Characteristic
the current drawn pin 1. The clock signal is irrelevant and
the output current is derived by equation I out = I ref * k, the
internal constant k being equal to 746.
ESD Protection
The NCP5008/NCP5009 includes silicon devices to
protect the pins against the ESD spikes voltages. To cope
with the different ESD voltages developed in the
applications, the built?in structures have been designed to
handle $ 2.0 kV in Human Body Model (HBM) and
$ 200 V in Machine Model (MM) and on each pin.
/LOCAL=Low), the output current depends solely upon
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