参数资料
型号: ZXSC310E5TA
厂商: Diodes Inc
文件页数: 10/16页
文件大小: 0K
描述: IC LED DRVR WHITE BCKLGT SOT23-5
特色产品: LED Driver Solutions
标准包装: 1
恒定电流:
拓扑: 升压(升压)
输出数: 1
内部驱动器:
类型 - 主要: 背光,闪灯/白光
类型 - 次要: 高亮度 LED(HBLED),白色 LED
频率: 200kHz
电源电压: 0.8 V ~ 8 V
安装类型: 表面贴装
封装/外壳: SC-74A,SOT-753
供应商设备封装: SOT-23-5
包装: 标准包装
工作温度: -40°C ~ 85°C
产品目录页面: 1478 (CN2011-ZH PDF)
配用: ZXSC310EV-ND - BOARD EVALUATION FOR ZXSC310E5TA
其它名称: ZXSC310DKR
ZXSC310
Peak current definition
The peak current rating is a design parameter whose
value is dependent upon the overall application. For
the high brightness reference designs, a peak current
Once I PK is decided the value of R SENSE can be
determined by:
of 190mA was chosen to ensure that the converter
could provide the required output power to the LED.
In general, the I PK value must be chosen to ensure that
R SENSE =
V ISENSE
I PK
the switching transistor, Q1, is in full saturation with
maximum output power conditions, assuming
worse-case input voltage and transistor gain under all
operating temperature extremes.
A selection guide of sense resistor and inductor values
for given input voltages, output currents and number
of LED connected in series is provided in the table
below.
Input Voltage
(V)
3.3V
3.3V
3.3V
3.3V
3.3V
3.3V
3.3V
3.3V
3.3V
5V
5V
5V
5V
5V
5V
5V
5V
5V
LED current
(mA)
10
10
10
20
20
20
30
30
30
10
10
10
20
20
20
30
30
30
No. of LED ’s
3
4
6
3
4
6
3
4
6
3
4
6
3
4
6
3
4
6
R SENSE
(m )
510
330
150
220
150
77
170
100
47
750
510
330
440
250
150
330
170
100
Inductor
( H)
68
68
68
68
68
68
68
68
68
68
68
68
68
68
68
68
68
68
Efficiency
(%)
80
81
79
84
93
79
84
84
77
83
84
79
85
85
82
86
85
83
ISSUE 3 - SEPTEMBER 2007
SEMICONDUCTORS
10
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