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參數(shù)資料
| 型號： | ADP1650ACPZ-R7 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 顯示驅(qū)動器 |
| 英文描述： | LED DISPLAY DRIVER, PDSO10 |
| 封裝： | 3 X 3 MM, 0.75 MM WIDTH, ROHS COMPLIANT, LFCSP-10 |
| 文件頁數(shù)： | 8/32頁 |
| 文件大?。?/td> | 1423K |
| 代理商： | ADP1650ACPZ-R7 |
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ADP1650
Rev. C | Page 16 of 32
initial peak as the junction temperature of the LED stabilizes.
An LED temperature vs. flash time profile for the handset PCB
design can be generated during the design phase by varying the
FL_TIM bits from the lowest to the highest setting and collecting a
VF sample on each flash.
Write ADC_EN = 10 to begin a die temperature measurement.
The value can be read back from the ADC_VAL[5:2] bits 1 ms
after the conversion has started. The most stable and accurate
value of die temperature is available at the end of the flash pulse.
External Voltage Mode
LED CURRENT
REG 0x02, FL_TIM = XXXX ms
REG 0x03, I_FL = XXXXX mA
REG 0x04, OUTPUT_EN = 1
STR_LV = 0
LED_MOD = 11
I2C DATA BUS
0A
I(FLASH)
STROBE
FL_TIM
START CONVERSION
(INTERNAL SIGNAL)
ADC_VAL[5:2]
AVAILABLE FOR READ
REG 0x08, ADC_EN = 01
tS = 1ms
0
883
7-
01
7
The ADC measures the voltage on the GPIO2 pin when the
GPIO2 is configured as an ADC input by setting IO2_CFG =
11. One example is using an external temperature-dependent
resistor to create a voltage based on the temperature of the flash
LED. The EN line can be used for biasing to reduce leakage
current when the flash is not being used.
5 V OUTPUT OPERATION
The ADP1650 can be used as a 5 V boost to supply up to 500 mA
for an audio voltage rail or keypad LED driver voltage. To move
into voltage regulation mode, the OUTPUT_EN bit must be set
to 0. To enable the 5 V output, set LED_MOD[1:0] = 01, and set
OUTPUT_EN = 1. The ADP1650 sets the VOUT pin to 5 V
and disconnects VOUT from LED_OUT. The VOUT pin is
connected to the SW node when the ADP1650 is not enabled.
VOUT should not be connected directly to a positive external
voltage source because this causes current to flow from VOUT
to the battery.
Figure 39. ADC Timing for VF Measurement in Flash Mode
Die Temperature Mode
The ADC measures the IC die temperature and provides the
result to the I2C interface. This is useful during the design phase
of the flash system to optimize PCB layout for the best thermal
design.
ADP1650
10F
1.0H
INPUT VOLTAGE = 2.7V TO 5.0V
PGND
SW
STROBE
10F
LED_OUT
EN
SGND
SCL
SDA
GPIO1
GPIO2
OFF
ON
I2C BUS
SDA, SCL
EN
APPLICATIONS PROCESSOR
3.2 MEGAPIXEL
TO 5.0 MEGAPIXEL
CMOS IMAGE SENSOR
POWER-ON RESET
VOUT = 5.0V
KEYPAD
LED DRIVER
VDD
GND
VOUT*
VIN
0
883
7-
0
18
*THE VOUT PIN IS CONNECTED TO THE SW NODE WHEN THE ADP1650 IS NOT ENABLED. VOUT SHOULD NOT BE CONNECTED DIRECTLY TO A POSITIVE
EXTERNAL VOLTAGE SOURCE BECAUSE THIS WILL CAUSE CURRENT TO FLOW FROM VOUT TO THE BATTERY.
Figure 40. ADP1650 Voltage Regulation Mode: LED Driver Application
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相關(guān)代理商/技術(shù)參數(shù) |
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| ADP1650CB-EVALZ | 功能描述:EVAL BOARD FOR ADP1650 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - LED 驅(qū)動器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:PowerWise® 電流 - 輸出 / 通道:20mA 輸出及類型:1，非隔離 輸出電壓:17V 特點:可調(diào)光 輸入電壓:2.7 ~ 5.5 V 已供物品:板 已用 IC / 零件:LM3508 相關(guān)產(chǎn)品:LM3508TLX-ND - IC LED DRVR WHT BCKLGT 9USMDLM3508TLDKR-ND - IC LED DRVR WHT BCKLGT 9MICROSMDLM3508TLCT-ND - IC LED DRVR WHT BCKLGT 9MICROSMDLM3508TLTR-ND - IC LED DRVR WHT BCKLGT 9MICROSMD |
| ADP1653 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Compact, High Efficiency, High Power Flash/Torch LED Driver with Dual Interface |
| ADP1653ACPZ-R21 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Compact, High Efficiency, High Power Flash/Torch LED Driver with Dual Interface |
| ADP1653ACPZ-R7 | 功能描述:IC LED DRVR PHOTO FLASH 16-LFCSP RoHS:是 類別:集成電路 (IC) >> PMIC - LED 驅(qū)動器 系列:- 標(biāo)準(zhǔn)包裝:60 系列:- 恒定電流:- 恒定電壓:- 拓?fù)?線性（LDO），PWM，升壓（升壓） 輸出數(shù):8 內(nèi)部驅(qū)動器:是 類型 - 主要:背光 類型 - 次要:RGB，白色 LED 頻率:500kHz ~ 1.5MHz 電源電壓:4.75 V ~ 26 V 輸出電壓:45V 安裝類型:* 封裝/外殼:* 供應(yīng)商設(shè)備封裝:* 包裝:* 工作溫度:-40°C ~ 85°C |
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