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参数资料
| 型号： | AS1109 EB |
| 厂商： | ams |
| 文件页数： | 11/25页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL AS1109 |
| 标准包装： | 1 |
| 电流 - 输出 / 通道： | 0.5 ~ 100 mA |
| 输出及类型： | 8，非隔离 |
| 输出电压： | 0 ~ 15 V |
| 特点： | 过热保护，开路 LED，短路 LED，诊断 |
| 输入电压： | 3 ~ 5.5 V |
| 已供物品： | 板 |
| 已用 IC / 零件： | AS1109 |
AS1109
Datasheet - D e t a i l e d D e s c r i p t i o n
Figure 14. Switching Global Error Mode Timing Diagram
OEN
t TESTING
t GSW(ERROR)
LD
t SU(ERROR)
t GSW(ERROR)
CLK
t P(I/O)
t GSW(ERROR)
t P(I/O)
t P(I/O)
SDI
T FLAG(IN)
O FLAG(IN)
S FLAG(IN)
SDO
Don’t
Care
T FLAG
Don’t
Care
O FLAG
Don’t
Care
S FLAG
Acquisition of Error
t P4
t SW(ERROR)
t SW(ERROR)
Status
8.3 Error-Detection Mode
Acquisition of the error status occurs at the rising edge of OEN. Error-detection mode is started on the rising edge of LD when OEN is high. The
CLK signal must be low when entering error detection mode. Error detection for open- and shorted-LEDs can only be performed for LEDs that
are switched on during test time. To switch between error-detection modes clock pulses are needed (see Table 5) .
Note: To test all LEDs, a test pattern that turns on all LEDs must be input to the AS1109.
8.4 Global Error Mode
Global error mode is entered when error-detection mode is started. Clock pulses during this period are used to select between temperature,
open-LED, and shorted-LED tests, as well as low-current diagnostic mode and shutdown mode (see Table 5) . In global error mode, an error flag
(T FLAG, O FLAG, S FLAG ) is delivered to pin SDO if any errors are encountered.
Table 5. Global Error Mode Selections
Clock
Pulses
0
1
2
3
4
Output Port
Don't Care
Enabled
Enabled
Don't Care
Don't Care
Error-Detection Mode
Over-Temperature Detection
Open-LED Detection
Shorted-LED Detection
Low-Current Diagnostic Mode
Shutdown Mode
Global Error Flag/Shutdown Condition
T FLAG = SDO = 1: No over-temperature warning.
T FLAG = SDO = 0: Over-temperature warning.
O FLAG = SDO = 1: No open-LED error.
O FLAG = SDO = 0: Open-LED error.
S FLAG = SDO = 1: No shorted-LED error.
S FLAG = SDO = 0: Shorted-LED error.
SDI = 1: Wakeup
SDI = 0: Shutdown
Note: For a valid result SDI must be 1 for the first device.
If there are multiple AS1109s in a chain, the error flag will be gated through all devices. To get a valid result at the end of the chain, a logic 1 must
be applied to the SDI input of the first device of the chain. If one device produces an error this error will show up after n *t P(I/O) + t SW(ERROR) at
pin SDO of the last device in the chain. This means it is not possible to identify which device in the chain produced the error. Therefore, if a global
error occurs, the detailed error report can be run to identify which AS1109, or LED produced the error.
Note: When no error has occurred, the detailed error report can be skipped, setting LD and subsequently OEN low.
Revision 1.21
10 - 24
相关PDF资料 |
PDF描述 |
|---|---|
| AS1110 EB | BOARD EVAL AS1110 |
| AS1112 EB | BOARD EVAL AS1112 |
| AS1115 DB-YELLOW | BOARD DEMO AS1115 YELLOW |
| AS1116 DB-YELLOW | BOARD DEMO AS1116 YELLOW |
| AS3691A EB | BOARD EVAL AS3691A |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AS1109-QF_EK_ST | 功能描述:AS1109 8, Non-Isolated Output LED Driver Evaluation Board 制造商:ams 系列:- 零件状态:有效 电流 - 输出/通道:100mA 输出和类型:8，非隔离 电压 - 输出:15V 特性:过热保护，开路 LED，短路 LED，诊断 电压 - 输入:3 V ~ 5.5 V 所含物品:板 使用的 IC/零件:AS1109 标准包装:1 |
| AS110R0JLF | 制造商:TT Electronics / IRC 功能描述:AS110R0JLF |
| AS110R2FLF | 制造商:TT Electronics / IRC 功能描述:AS110R2FLF |
| AS110R2HLF | 制造商:TT Electronics / IRC 功能描述:AS110R2HLF |
| AS110R2JLF | 制造商:TT Electronics / IRC 功能描述:AS110R2JLF |
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