参数资料
型号: AS3647-ZWLT-500
厂商: ams
文件页数: 25/38页
文件大小: 0K
描述: IC WHITE LED FLASH DVR 13WLCSP
标准包装: 1
恒定电压:
拓扑: PWM,升压(升压)
输出数: 2
内部驱动器:
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: 标准包装
工作温度: -30°C ~ 85°C
其它名称: AS3647-ZWLT-500DKR
AS3647/47B
Datasheet, Confidential - D e t a i l e d D e s c r i p t i o n
Table 9. TXMask Register
Addr: 3
TXMask Register
This register defines the TXMask settings and coil peak current
Bit
Bit Name
Default Access
Description
Defines operating mode for input pin TXMASK/TORCH
00
pin has no effect
torch mode (LED current is defined by the 7LSB bits
1:0
ext_torch_on
00
R/W
01
10
txmask-mode; during flash if TXMASK/TORCH=1, the
LED current is set to flash_txmask_current - (see
TXMASK on page 16)
external torch mode: if TXMASK/TORCH=1 and
mode_setting =00, the AS3647/47B is set into external
1
of led_current )
11
00
don’t use
Defines the maximum coil current (parameter I LIMIT )
I LIMIT = 2.0A
3:2
coil_peak
10
R/W
01
I LIMIT = 2.5A
10
11
I LIMIT = 3.0A
I LIMIT = 3.5A
Define the current on pin LED_OUT1/2 in flash mode if
ext_torch_on =01 and TXMASK/TORCH=1
0h
1h
2h
3h
4h
5h
0mA
100mA
201mA
301mA
402mA
502mA
7:4
flash_txmask_current
2
6h
R/W
6h
7h
602mA - default
703mA
8h
9h
Ah
Bh
Ch
Dh
Eh
Fh
803mA
904mA
1004mA
1104mA
1205mA
1305mA
1405mA
1506mA
1. The MSB bit of this register not used to protect the LED; therefore the maximum current = half the maximum
flash current
2.
www.austriamicrosystems.com/AS3647
1.5-4
24 - 37
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