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参数资料
| 型号： | AS3648-ZWLT |
| 厂商： | ams |
| 文件页数： | 16/39页 |
| 文件大小： | 0K |
| 描述： | IC LED DVR 2000MA FLASH 13WLCSP |
| 标准包装： | 10,000 |
| 恒定电压： | 是 |
| 拓扑： | PWM，升压（升压） |
| 输出数： | 2 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 闪灯/白光 |
| 频率： | 4MHz |
| 电源电压： | 2.7 V ~ 4.4 V |
| 输出电压： | 2.8 V ~ 5.5 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 13-UFBGA，WLCSP |
| 供应商设备封装： | 13-WLCSP（2.25x1.5） |
| 包装： | 带卷 (TR) |
| 工作温度： | -30°C ~ 85°C |
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AS3648
Datasheet, Confidential - D e t a i l e d D e s c r i p t i o n
Before a flash is started the voltage on VIN is measured. If the voltage is below the setting of vin_low_v the fault_uvlo
(see page 27) is set and the flash is disabled (driver stays in shutdown) if vin_low_v_shutdown =1. The flash current is
reduced to flash_txmask_current if vin_low_v_shutdown =0.
During flash, if the voltage on VIN drops below the threshold defined by vin_low_v_run , the flash current is reduced (or
ramping of the current is stopped during flash current startup) and fault_uvlo is set. The timing for the reduction of the
current is 8μs/LSB current change.
During the flash pulse the actual used current can be readout by the register led_current_actual .
After the flash pulse the minimum current can be readout by the register led_current_min - this allows to adjust the
camera sensitivity (gain or iso-settings) for the subsequent flash pulse (e.g. when using a pre-flash and a main flash
pulse).
The internal circuit for low voltage current reductions are shown in Figure 20 :
Figure 20. Low Voltage current Reduction Internal Circuit
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AS3648
be read back through the I C interface from register led_current_min (see page 29) and used for the setting for the
A mobile phone camera flash system can trigger a diagnostic flash and a main-flash:
The diagnostic flash is initiated by the processor. After this diagnostic flash, the determined maximum flash current can
2
main flash. Therefore the current in the main-flash is constant and additionally the camera system can use this current
for picture quality adjustments - the waveforms for this concept are shown in Figure 21 :
www.austriamicrosystems.com/AS3648
1.5-4
15 - 38
相关PDF资料 |
PDF描述 |
|---|---|
| P51-500-S-T-I12-4.5V-000-000 | SENSOR 500PSI 7/16-20-2B .5-4.5V |
| REC7.5-4815DRW/H2/A/M/CTRL | CONV DC/DC 7.5W 36-72VIN +/-15V |
| REC3-243.3SRW/H2/C/M/SMD | CONV DC/DC 3W 18-36VIN 3.3VOUT |
| P51-2000-S-S-I12-4.5V-000-000 | SENSOR 2000PSI 1/4-18NPT .5-4.5V |
| P51-500-S-B-M12-4.5V-000-000 | SENSOR 500PSI 1/8-27NPT .5-4.5V |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AS3648-ZWLT-500 | 功能描述:IC WHITE LED FLASH DVR 13WLCSP RoHS:是 类别:集成电路 (IC) >> PMIC - LED 驱动器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 恒定电流:- 恒定电压:- 拓扑:升压（升压），切换式电容器（充电泵） 输出数:1 内部驱动器:是 类型 - 主要:背光 类型 - 次要:白色 LED 频率:625kHz ~ 875kHz 电源电压:2.7 V ~ 5.3 V 输出电压:5V 安装类型:表面贴装 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽） 供应商设备封装:10-µMAX 包装:带卷 (TR) 工作温度:-40°C ~ 85°C |
| AS36490FLF | 制造商:TT Electronics / IRC 功能描述:AS36490FLF |
| AS36490HLF | 制造商:TT Electronics / IRC 功能描述:AS36490HLF |
| AS36490JLF | 制造商:TT Electronics / IRC 功能描述:AS36490JLF |
| AS36491FLF | 制造商:TT Electronics / IRC 功能描述:AS36491FLF |
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