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参数资料
| 型号： | LTC3217EUD#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 2/12页 |
| 文件大小： | 0K |
| 描述： | IC LED DRVR FLASH TORCH 16QFN |
| 标准包装： | 2,500 |
| 拓扑： | PWM，升压（升压），切换式电容器（充电泵） |
| 输出数： | 4 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 闪灯/白光 |
| 类型 - 次要： | 白色 LED |
| 频率： | 600kHz ~ 1.15MHz |
| 电源电压： | 2.9 V ~ 4.5 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-WFQFN 裸露焊盘 |
| 供应商设备封装： | 16-QFN-EP（3x3） |
| 包装： | 带卷 (TR) |
| 工作温度： | -40°C ~ 85°C |
LTC3217
ABSOLUTE MAXIMUM RATINGS
(Note 1)
V BAT , CPO to GND......................................... –0.3V to 6V
PIN CONFIGURATION
TOP VIEW
EN1, EN2...................................... –0.3V to (V BAT + 0.3V)
I CPO (Note 2) ........................................................600mA
I ILED1-4 (Note 3) ...................................................150mA
CPO Short-Circuit Duration .............................. Inde?nite
C1P 1
CPO 2
EN1 3
16 15 14 13
17
12 C2M
11 EN2
10 I SET2
Operating Temperature Range (Note 4).... –40°C to 85°C
LED1 4
9
I SET1
Storage Temperature Range................... –65°C to 125°C
5
6
7
8
UD PACKAGE
16-LEAD (3mm
3mm) PLASTIC QFN
T JMAX = 125°C, θ JA = 68°C/W
EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH
LTC3217EUD#PBF
TAPE AND REEL
LTC3217EUD#TRPBF
PART MARKING
LBTQ
PACKAGE DESCRIPTION
16-Lead (3mm × 3mm) Plastic QFN
TEMPERATURE RANGE
–40°C to 85°C
Consult LTC Marketing for parts speci?ed with wider operating temperature ranges.
Consult LTC Marketing for information on non-standard lead based ?nish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel speci?cations, go to: http://www.linear.com/tapeandreel/
ELECTRICAL CHARACTERISTICS The l denotes the speci?cations which apply over the full operating
temperature range, otherwise speci?cations are at T A = 25°C. V BAT = 3.6V, C1 = C2 = C3 = C4 = 2.2μF, unless otherwise noted.
PARAMETER
V BAT Operating Voltage
CONDITIONS
●
MIN
2.9
TYP
MAX
4.5
UNITS
V
I VBAT Operating Current
R ISET1 = R ISET2 = 20k, EN1 = EN2 = High
V BAT Shutdown Current
LED 1-4 Current
I CPO = 0mA, 1x Mode
I CPO = 0mA, 1.5x Mode
I CPO = 0mA, 2x Mode
1
4
6
4
mA
mA
mA
μA
LED Current Ratio (I LED /I SET1/2 )
I LED = 25mA to 100mA
●
370
400
430
mA/mA
LED Dropout Voltage
Mode Switching Delay
LED Current Matching
Mode Switch Threshold, I LED = 100mA
EN1 Only
Any Two Outputs, I LED = 100mA
330
2.5
1
mV
ms
%
Charge Pump (CPO)
1x Mode Output Voltage
1.5x Mode Output Voltage
2x Mode Output Voltage
1x Mode Output Impedance
1.5x Mode Output Impedance
2x Mode Output Impedance
I CPO = 0mA
I CPO = 0mA
I CPO = 0mA
V BAT = 3.4V, V CPO ≤ 4.6V (Note 5)
V BAT = 3.2V, V CPO ≤ 5.1V (Note 5)
V BAT
4.5
5.05
0.5
2.8
3.2
V
V
V
Ω
Ω
Ω
CLOCK Frequency
●
0.6
0.85
1.15
MHz
3217fa
2
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