SM8134A中文资料PDF规格书
SM8134A规格书详情
OVERVIEW
The SM8134A is a charge pump type white LED driver. It can drive 1 to 4 backlight white LED connected in parallel and 1 flash white LED, making the device ideal for camera-equipped cellular phones. The charge pump switches between ×1 to ×1.5 boost mode in response to LED drive current requirements to extend battery life to the maximum. The boost switching occurs in response to the drive current of all the connected LED and thus supports variations in LED forward-bias voltage drop (VF). Each LED drive current is controlled by a 5-channel LED drive current control circuit. The backlight LED drive current and ON/OFF control, and flash
LED drive current and ON/OFF control are all set by 3-wire serial interface data input. Also, an under voltage lockout (UVLO) circuit is built-in to prevent incorrect operation when the battery voltage drops.
FEATURES
■ Noise reduction due to charge pump boost circuit
■ Automatic charge pump switching to conserve power
■ Drives 1 to 4 backlight white LED (30mA/ch at maximum setting)
■ Drives a flash white LED (150mA at maximum setting)
■ Backlight and flash white LED brightness adjustment
■ 3-wire serial input interface for all setting and control
■ Under voltage lockout (UVLO) circuit built-in
■ Soft start circuit built-in
■ Thermal protection circuit built-in
■ Input voltage range
• No-load current (IOUT= 0mA): 2.7 to 4.6V
• Load current (IOUT= 80mA): 3.0 to 4.6V
• Load current (IOUT= 180mA): 3.3 to 4.6V
• Load current (IOUT= 200mA): 3.4 to 4.6V
■ Quiescent current
• Not-switching (×1.0 mode): 0.3mA (typ)
• Switching (×1.5 mode): 1.7mA (typ)
■ Standby current: 0.01µA (typ)
■ Operating frequency: 750kHz (typ)
■ Maximum backlight LED current: 30mA/ch
■ Maximum flash LED current: 150mA
■ All LED total maximum current: 200mA
■ Backlight LED current matching (ILED= 20mA) : ±3
■ Flash LED current accuracy (ILED= 150mA) : ±6.7
■ Packages: 16-pin QFN
APPLICATIONS
■ Cellular phone
■ Digital still camera
■ PDA
■ Portable games
产品属性
- 型号:
SM8134A
- 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 |
23+ |
NA/ |
9250 |
原厂直销,现货供应,账期支持! |
询价 | ||
NPC |
2020+ |
QFN |
80000 |
只做自己库存,全新原装进口正品假一赔百,可开13%增 |
询价 | ||
只做原装 |
21+ |
QFN |
36520 |
一级代理/放心采购 |
询价 | ||
SM |
1822+ |
BGA |
6852 |
只做原装正品假一赔十为客户做到零风险!! |
询价 | ||
NPC |
QFN |
39000 |
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 | |||
NPC |
589220 |
16余年资质 绝对原盒原盘 更多数量 |
询价 | ||||
NPS |
23+ |
SOP14 |
1800 |
现货库存,全新原装,特价销售 |
询价 | ||
NPC |
2021+ |
QFN |
100500 |
一级代理专营品牌!原装正品,优势现货,长期排单到货 |
询价 | ||
SEIKO |
22+ |
QFN |
28600 |
只做原装正品现货假一赔十一级代理 |
询价 | ||
NPC |
09+ |
QFN |
23400 |
一级代理,专注军工、汽车、医疗、工业、新能源、电力 |
询价 |