HT7938中文资料High Current and Performance White LED Driver数据手册Holtek规格书
HT7938规格书详情
描述 Description
HT7938 is high efficiency boost converter with constant current output to provide backlight in handheld devices. Series connection of LEDs provides constant identical LED currents resulting in uniform brightness. The continuous LED current is set with FB pin regulated voltage across an external sense resistor (RFB) connected from that pin to ground. The built-in open load protection prevents the damage resulting from an open circuit condition. Low 200mV feedback voltage minimizes power loss in the current setting resistor for better efficiency. HT7938 switches at rates up to 1.2MHz to allow the use of extremely small inductor and filter capacitor.
特性 Features
• Efficiency up to 85% at VIN=3.6V, 9LEDs, ILED=20mA
• 1.2MHz fixed switching frequency
• Low Standby Current: 0.1µA (typ.) at VEN= 0V
• Matches LED current
• Tiny inductor and capacitors
• Up to 10 strings White-LED (LED VF(Max.)=3.5V)
• Tiny 6-lead SOT23-6 package
• Built in OVP, OCP, OTP, UVLO protection
技术参数
- 型号：
HT7938
- 制造商：
HOLTEK
- 制造商全称：
Holtek Semiconductor Inc
- 功能描述：
High Current and Performance White LED Driver
| 供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
|---|---|---|---|---|---|---|---|
HOLTEK/合泰 |
24+ |
NA/ |
24230 |
原装现货,当天可交货,原型号开票 |
询价 | ||
HOLTEK(合泰/盛群) |
24+ |
SOT236 |
7350 |
现货供应,当天可交货!免费送样,原厂技术支持!!! |
询价 | ||
HOLTEK/合泰 |
25+ |
HT7938A-3SOT23-6 |
54687 |
百分百原装现货 实单必成 欢迎询价 |
询价 | ||
HOLTEK/合泰 |
2021+ |
SOT89SOT23TO92 |
880000 |
明嘉莱只做原装正品现货 |
询价 | ||
HOLTEK/合泰 |
24+ |
SOT23 |
100000 |
全新原装/代理渠道/优势价格/技术支持 |
询价 | ||
HOLTEK |
24+ |
SOT-23-6 |
5000 |
全新原装正品,现货销售 |
询价 | ||
HOLTEK(合泰) |
25+ |
封装 |
500000 |
源自原厂成本,高价回收工厂呆滞 |
询价 | ||
HOLTEK |
24+ |
SOPDIP |
40677 |
進口臺灣原装合泰可追溯原厂技术支持燒錄開發 |
询价 | ||
HOLTEK |
12+ |
SOT23-6 |
2000 |
一级代理,专注军工、汽车、医疗、工业、新能源、电力 |
询价 | ||
HOLTEK/合泰 |
12+ |
SOT23-6 |
2000 |
原装正品 可含税交易 |
询价 |
