参数资料
型号: ZXLD1374EST20TC
厂商: Diodes Inc
文件页数: 8/39页
文件大小: 0K
描述: IC LED DVR BUCK BOOST 20TSSOP
标准包装: 1
拓扑: 低端,PWM,降压(降压),升压(升压)
输出数: 1
内部驱动器:
类型 - 主要: 车载,通用
类型 - 次要: 高亮度 LED(HBLED)
频率: 300kHz ~ 1MHz
电源电压: 6.3 V ~ 60 V
输出电压: 60V
安装类型: 表面贴装
封装/外壳: 20-TSSOP(0.173",4.40mm 宽)裸露焊盘
供应商设备封装: 20-TSSOP-EP
包装: 标准包装
工作温度: -40°C ~ 125°C
其它名称: ZXLD1374EST20TCDIDKR
A Product Line of
Diodes Incorporated
ZXLD1374
Typical Characteristics
3
2.5
2
1.5
1500
1250
1000
750
Switching
I LED
900
750
600
450
1
500
Frequency
300
T A = 25°C
V AUX IN = 12V
0.5
250
=V
2LEDs
L = 33 μ H
150
R S = 300m Ω
0
6
12 18 24 30 36 42 48 54 60
SUPPLY VOLTAGE (V)
Figure 1 Supply Current vs. Supply Voltage
0 0
0 0.5 1 1.5 2 2.5
ADJ VOLTAGE (V)
Figure 2 Buck LED Current, Switching Frequency vs. V ADJ
700
650
600
550
500
450
1400
1200
1000
700
650
600
550
500
450
700
600
500
400
I LED
800
400
I LED
400
350
350
300
Switching
Frequency
600
300
Switching
Frequency
300
150
R S = 300m Ω
150
100
100
R S = 300m Ω
250
200 400
T A = 25°C
V AUX = V IN = 24V
100 8LEDs 200
L = 33 μ H
50 GI = 0.23
0 0
0 0.5 1 1.5 2 2.5
ADJ VOLTAGE
Figure 3 Buck-Boost LED Current, Switching Frequency vs. V ADJ
1500
1250
1000
750
500
250
250
200 200
T A = 25°C
V AUX = V IN = 12V
12 LEDs
L = 33 μ H
50
0 0
0 0.25 0.5 0.75 1 1.25 1.5 1.75 2 2.25 2.5
ADJ VOLTAGE
Figure 4 Boost LED Current, Switching Frequency vs. V ADJ
0
0
10
20
30 40 50 60 70 80 90 100
PWM DUTY CYCLE (%)
Figure 5 I LED vs. PWM Duty Cycle
Figure 6 I LED vs. Time - PWM Pin Transient Response
ZXLD1374
Document number: DS35032 Rev. 3 - 2
8 of 39
www.diodes.com
September 2012
? Diodes Incorporated
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