SM8122A中文资料PDF规格书
SM8122A规格书详情
OVERVIEW
The SM8122A is a high efficiency step-up DC/DC converter. Due to high voltage CMOS process realizing 25V output supply as maximum value, 2 to 6 lights of white LED connected in series can be lighted. By connecting in series, current variation among LED is eliminated. Current value sent to white LED can be set by external resistors. In addition, brightness can also be adjusted by control to FB pin or CE pin. Since the SM8122A has an over voltage protection circuit built-in, it dispenses with the existing external ZD (zener diode). Besides, the switching frequency of the SM8122A is higher (2.0MHz) than the existing product (SM8121A), so that it can respond to lower inductance value.
FEATURES
■ Boost-up control using PWM
■ 2 to 6 lights of white LED (connected in series) lighted
■ Output current value can be set by external resistors (51Ω: 9.8mA, 33Ω: 15.2mA, 24Ω: 20.8mA)
■ Brightness adjustable by control to FB pin or CE pin
■ Current variation among LED decreased by high precision
■ High efficient drive by step-up model
■ Over voltage protection circuit built-in
■ Supply voltage range: 2.3 to 5.5V
■ Maximum output voltage: 25V
■ Quiescent current: 820µA (typ)
■ Standby current: 1.0µA (max)
■ RON (Switching MOS-Tr): 2Ω (typ)
■ Switching frequency: 2.0MHz (typ)
■ Output current detection accuracy: ± 2
■ Package: SOT23-6W (SM8122AH)
MSON-6 (SM8122AD)
APPLICATIONS
■ Cellular phone
■ Pager
■ Digital still camera
■ Handy terminal
■ PDAs
■ Portable games
■ White LED drive
■ LCD bias supply
■ Flash memory supply
产品属性
- 型号:
SM8122A
- 制造商:
NPC
- 制造商全称:
Nippon Precision Circuits Inc
- 功能描述:
White LED Driver IC
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
NPC |
2016+ |
QFN-20 |
3000 |
只做原装,假一罚十,公司可开17%增值税发票! |
询价 | ||
SEIKO |
23+ |
QFN |
20000 |
原厂原装正品现货 |
询价 | ||
NS |
2020+ |
原厂封装 |
350000 |
100%进口原装正品公司现货库存 |
询价 | ||
NPC |
22+ |
QFN |
6852 |
只做原装正品现货!或订货假一赔十! |
询价 | ||
N/A |
05+ |
NA |
880000 |
明嘉莱只做原装正品现货 |
询价 | ||
NPC |
22+ |
QFN20 |
6868 |
原装现货,可开13%税票 |
询价 | ||
NPC |
23+ |
QFN-20 |
90000 |
只做原装 全系列供应 价格优势 可开增票 |
询价 | ||
NPC |
QFN |
893993 |
集团化配单-有更多数量-免费送样-原包装正品现货-正规 |
询价 | |||
SEIKO |
2023+ |
SOT23-6 |
80000 |
一级代理/分销渠道价格优势 十年芯程一路只做原装正品 |
询价 | ||
NPC |
23+ |
NA/ |
1000 |
优势代理渠道,原装正品,可全系列订货开增值税票 |
询价 |