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AAT2860-5

更新时间： 2022-04-23 23:00:11
品牌 Logo 应用领域
ANALOGICTECH 驱动器
页数 文件大小 规格书
23页 2894K
描述
Backlight/Flash LED Driver and Multiple LDO Lighting Management Unit

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AAT2860-5 数据手册

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PRODUCT DATASHEET  
AAT2860  
TM  
ChargePump  
Backlight/Flash LED Driver and Multiple LDO Lighting Management Unit  
Electrical Characteristics1  
VIN = 3.6V; CIN = 4.7µF; COUT = CLDO(A, B, C) = 2.2μF; C1 = C2 = 1µF; TA = -40°C to +85°C, unless otherwise noted.  
Typical values are TA = 25°C.  
Symbol Description  
VIN IN Operating Voltage Range  
Conditions  
Min Typ Max Units  
2.7  
5.5  
V
LED_SEL = IN, LDO_SEL = FL_LVL =  
AGND; ADDR = 02H, DATA = 4CH  
0.65  
mA  
2X Mode; LED_SEL = IN, FL_LVL = LDO_  
SEL = AGND; BL1-BL7 = OPEN  
2X Mode; LED_SEL = IN, FL_LVL = IN;  
LDO_SEL = AGND; FL1-FL2 = OPEN  
LED_SEL = FL_LVL = AGND, LDO_SEL =  
IN; ADDR = 01H; DATA = 0EH; No Load  
LED_SEL, LDO_SEL, FL_LVL = AGND  
5.5  
5.5  
mA  
mA  
µA  
IIN  
IN Operating Current  
220  
1.0  
IIN(SHDN)  
TSD  
TSD(HYS)  
IN Shutdown Current  
Over-Temperature Shutdown Threshold  
Over-Temperature Shutdown Hysteresis  
µA  
˚C  
˚C  
140  
15  
Charge Pump Section  
BL1-BL7 Charge Pump Mode Transition  
Hysteresis  
FL1-FL2 Charge Pump Mode Transition  
Hysteresis  
LED_SEL = IN, ADDR = 02H, DATA = 6CH;  
FL_LVL = AGND, LDO_SEL = AGND  
VIN(TH_H, BL)  
VIN(TH_H, FL)  
0.15  
1
V
V
fOSC  
tCP(SS)  
Charge Pump Oscillator Frequency  
Charge Pump Soft-start Time  
TA = 25°C  
TA = 25°C  
1
100  
MHz  
µs  
BL1-BL5, BL6/FL1, BL7/FL2 LED Drivers  
tLED(SU)  
LED Output Current Start-up Time  
OUT: 0V to IN  
20  
30  
µs  
LED_SEL = IN, ADDR=02H, DATA=6CH;  
VIN – VF = 1V; FL_LVL = LDO_SEL = AGND  
IBLx  
BL1-BL7 Current Accuracy  
27  
33  
mA  
IBL_(DAT-  
A7DH)  
LED_SEL = IN, ADDR=02H, DATA=7DH;  
VIN – VF = 1V; FL_LVL = LDO_SEL = AGND  
LED_SEL = IN, ADDR=02H, DATA=6CH;  
VIN – VF = 1V; FL_LVL = LDO_SEL = AGND  
LED_SEL = IN, ADDR=02H, DATA=60H,  
VIN – VF = 1V; FL_LVL = LDO_SEL = AGND  
LED_SEL = IN, ADDR=02H, DATA=6CH;  
VIN – VF = 1V; FL_LVL = LDO_SEL = AGND  
BL1-BL7 Current Accuracy  
2.55  
3
3
3.45  
mA  
%
V
ΔI(BLx)  
/
BL1-BL7 Current Matching2  
IBL(AVG)  
VBL_(TH)  
BL1-BL7 Charge Pump Transition Threshold  
BL1-BL7 Automatic Fade Out Timer  
0.18  
1
tFADE  
s
LED_SEL = FL_LVL = IN, ADDR=04H,  
DATA=03H; VIN - VF = 1V, LDO_SEL =  
AGND  
LED_SEL = FL_LVL = IN, ADDR = 04H,  
DATA=60H; VIN - VF = 1V, LDO_SEL =  
AGND  
LED_SEL = FL_LVL = IN, ADDR = 04H,  
DATA=03H; VIN - VF = 1V, LDO_SEL=  
AGND  
LED_SEL = FL_LVL = IN, ADDR = 04H,  
DATA=60H; VIN - VF = 1V, LDO_SEL =  
AGND  
IFL[1/2]  
FL1, FL2 Current Accuracy, -4 Option  
FL1, FL2 Current Accuracy, -4 Option  
FL2 Current Accuracy, -2 and -3 Options  
FL2 Current Accuracy, -2 and -3 Options  
270  
54  
300  
60  
330  
66  
mA  
mA  
mA  
mA  
IFL[1/2]  
540  
108  
600  
120  
660  
132  
IFL2  
IFL2  
1. The AAT2860 is guaranteed to meet performance specifications over the -40°C to +85°C operating temperature range and is assured by design, characterization, and correla-  
tion with statistical process controls.  
2. Current matching is defined as the deviation of any sink/channel current from the average of all active channels.  
w w w . a n a l o g i c t e c h . c o m  
4
2860.2008.05.1.0  
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