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HV858K7-G

更新时间： 2024-01-31 06:15:51
品牌 Logo 应用领域
超科 - SUPERTEX 驱动器
页数 文件大小 规格书
7页 249K
描述
Tri-EL Lamp Driver IC

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HV858K7-G 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Transferred零件包装代码：SON
包装说明：VSON,针数：10
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.65
数据输入模式：SERIAL接口集成电路类型：EL DISPLAY DRIVER
JESD-30 代码：S-PDSO-N10JESD-609代码：e3
长度：3 mm复用显示功能：NO
功能数量：1区段数：3
端子数量：10最高工作温度：85 °C
最低工作温度：-40 °C封装主体材料：PLASTIC/EPOXY
封装代码：VSON封装形状：SQUARE
封装形式：SMALL OUTLINE, VERY THIN PROFILE峰值回流温度（摄氏度）：NOT SPECIFIED
认证状态：Not Qualified座面最大高度：0.8 mm
最大供电电压：6.5 V最小供电电压：1.73 V
标称供电电压：3 V表面贴装：YES
温度等级：INDUSTRIAL端子面层：Matte Tin (Sn)
端子形式：NO LEAD端子节距：0.5 mm
端子位置：DUAL处于峰值回流温度下的最长时间：NOT SPECIFIED
宽度：3 mm最小 fmax：1 MHz
Base Number Matches：1

HV858K7-G 数据手册

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Supertex inc.  
HV858  
Tri-EL Lamp Driver IC  
General Description  
Features  
ꢀ Tri-EL lamp driver with common terminal  
ꢀ Independent brightness control for all 3 lamps  
ꢀ 1.8V to 6.5V Operating Supply Voltage  
ꢀ Output voltage regulation  
The Supertex HV858 is a high voltage triple EL lamp driver  
designed for driving combined EL lamps of up to 3.0 in2  
(1.0 in2 each). The input supply voltage range is from 1.8V  
to 6.5V. The device is designed such that the input voltage  
to the inductor can be different from the input voltage to the  
device (split supply). The device uses a single inductor and  
a minimum number of passive components. The nominal  
regulated output voltage that is applied to the EL lamp is  
±±5V. The HV858 has two internal oscillators, one for the  
internal switching MOSFET, and the other for the high voltage  
EL lamp driver. The EL lamp frequency is fixed internally at  
500Hz. The power converter oscillator runs 256 times faster  
than the EL lamp driver at 128kHz.  
ꢀ Two-pin serial data communication for control  
ꢀ Linear brightness control with seven steps at constant  
efficiency  
ꢀ 128kHz Fixed Switching Frequency  
ꢀ Split supply capability  
ꢀ Patented high efficiency EL lamp driver  
ꢀ Single miniature inductor drives all 3 lamps  
ꢀ Only 4 external components  
ꢀ Burst mode power converter for best efficiency  
ꢀ CMOS compatible serial interface with noise rejection  
ꢀ 150nA max. leakage current when disabled  
ꢀ Power-on reset causes all outputs to be off when first  
powered up  
An external inductor is connected between the L and V  
pins (or between the L pin and separate voltageXsource DinD  
the case of a split suppXly application). A 0.002-0.01µF, 100V  
capacitor is connected between the C pin and ground.  
The switching MOSFET charges the extsernal inductor and  
discharges it into the capacitor at the Cs pin. The voltage at  
Cs will start to increase. Once the voltage at Cs reaches a  
nominal value of ±5V, the switching MOSFET is turned OFF  
to conserve power.  
ꢀ Small 10-pin MSOP package  
ꢀ 10-pin DFN/MLP package (0.8mm thickness)  
Applications  
One side of the 3 EL lamps is connected to the Com pin of  
HV858 and the other side to the EL1, EL2, and EL3 pins of the  
HV858. Each ELlamp output may be independently controlled  
to have one of the 7 brightness levels or can be completely  
turned OFF by a 10-bit serial data input register. The 10-bit  
control code has 3 bits to control the brightness level of each  
ELLamp and one bit to optionally control the power converter.  
The 3-bit binary brightness control code controls the number  
of 500Hz cycles (from 0 to 7) in a group of 7 cycles.  
ꢀ Mulit-segment, variable displays  
ꢀ Cell phone keypads and displays  
ꢀ MP3 players  
ꢀ Watches  
Typical Application Circuit  
LX  
D
+
VIN  
CIN  
CS  
-
LX  
1
CS  
10  
9
Com  
2
GND  
VDD  
SDI  
EL3 8  
EL Lamp 3  
EL Lamp 2  
EL Lamp 1  
3
+
EL2  
7
4
VDD  
CDD  
-
EL1  
6
5 SCK  
HV858  
Serial Data in  
Clock  
A011706  
Supertex inc. 1235 Bordeaux Drive, Sunnyvale, CA ±408± Tel: (408) 222-8888 FAX: (408) 222-48±5 www.supertex.com  
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