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| 型号： | ADD5203ACPZ-RL |
| 厂商： | Analog Devices Inc |
| 文件页数： | 16/24页 |
| 文件大小： | 0K |
| 描述： | IC LED DRVR WHITE BCKLGT 28LFCSP |
| 标准包装： | 1 |
| 恒定电流： | 是 |
| 拓扑： | PWM，升压（升压） |
| 输出数： | 8 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 背光 |
| 类型 - 次要： | 白色 LED |
| 频率： | 350kHz ~ 1MHz |
| 电源电压： | 6 V ~ 21 V |
| 输出电压： | 45V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-WFQFN 裸露焊盘，CSP |
| 供应商设备封装： | 28-LFCSP-WQ（4x4） |
| 包装： | 标准包装 |
| 工作温度： | -25°C ~ 85°C |
| 其它名称： | ADD5203ACPZ-RLDKR |
ADD5203
Table 14. Device Control Register (Address 0x01) Bit Description
Bit Name
PWM_MD
PWM_SEL
BL_CTL
Description
PWM mode select
1 = absolute brightness, 0 = percent change (default)
Brightness control select
1 = control by PWM, 0 = control by SMBus (default)
Backlight on/off
1 = on, 0 = off (default)
Fault/Status Register (Address 0x02)
This register has six status bits that allow monitoring of the
ADD5203 operating state. Bit 0, named fault, is a logical OR of
all fault codes to simplify error detection. In the operation of the
ADD5203, Bit 1, named THRM_SHDN, is set to 1 when a
thermal shutdown event occurs. Bit 3, named BL_STAT, is the
backlight status indicator. This bit is set to 1 whenever the backlight
is on and is set to 0 whenever the backlight is off. Bit 4, named
1_CH_SD, is set to 1 if one or more current sources are disabled.
In addition, Bit 5, named 2_CH_SD, is set to 1 if two or more
current sources are disabled due to an LED open event during
normal operation. All reserved bits return to 0 when read and
ignore the bit value when written. All of the bits in this register
are read only. The default value for Register 0x02 is 0x00.
Table 15. Fault/Status Register (Address 0x02) Bit Map
MSB
Identification Register (Address 0x03)
The ID register contains two bit fields to denote the manufacturer
and silicon revision of the ADD5203. The bit field widths were
chosen to allow up to 16 vendors with up to eight silicon revisions
each. To ensure that the number of silicon revisions remains low,
the revision field should not be updated until the part is sent to
the factory of the end-customer. Therefore, if during the engineering
development process, three silicon spins are needed before the device
is released to the factory of the end-customer, the next available
revision ID is used for these three spins. The manufacturer ID of
Analog Devices, Inc., is 6 (Bit[6:3] = 0110b). In addition, the initial
value of REVx is 0, and subsequent REVx values are incremented
by 1. This register is read only.
LSB
Bit 7
Reserved
Bit 6
Reserved
Bit 5 (R)
2_CH_SD
Bit 4 (R)
1_CH_SDS
Bit 3 (R)
BL_STAT
Bit 2 (R)
OV_CURR
Bit 1 (R)
THRM_SHDN
Bit 0 (R)
Fault
Default Value
0x00
Table 16. Fault/Status Register (Address 0x01) Bit Description
Bit Name
2_CH_SD_, 1_CH_SD
BL_STAT
OV_CURR
THRM_SHDN
Fault
Description
The number of faulted strings is reported in these bits.
00 = no faults, 01 = one string fault, 11 = two or more strings faulted.
Backlight status.
1 = backlight on, 0 = backlight off (default).
Input overcurrent.
1 = overcurrent condition, 0 = current ok (default).
Thermal shutdown.
1 = thermal fault, 0 = thermal ok (default).
Fault occurred. Logic OR of all the fault conditions.
Table 17. Identification Register (Address 0x03) Bit Map
MSB
LSB
Bit 7
LED panel
Bit 6
MFG3
Bit 5 (R)
MFG2
Bit 4 (R)
MFG1
Bit 3 (R)
MFG0
Bit 2 (R)
REV2
Bit 1 (R)
REV1
Bit 0 (R)
REV0
Default Value
0xB0
Table 18. Identification Register (Address 0x03) Bit Description
Bit Name
LED Panel
MFG[3:0]
REV[2:0]
Description
Display panel using LED backlight, Bit 7 = 1.
Manufacturer ID (Analog Devices ID is 6).
Silicon revision (Revision 0 to Revision 7 are allowed for silicon spins).
Rev. 0 | Page 16 of 24
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