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参数资料
| 型号： | MAX1986ETE+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 9/17页 |
| 文件大小： | 0K |
| 描述： | IC LED DRVR WHITE BCKLGT 16-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 拓扑： | PWM，升压（升压） |
| 输出数： | 4 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 背光 |
| 类型 - 次要： | 白色 LED |
| 频率： | 800kHz ~ 1.2MHz |
| 电源电压： | 2.7 V ~ 5.5 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-WQFN 裸露焊盘 |
| 供应商设备封装： | 16-TQFN-EP（4x4） |
| 包装： | 带卷 (TR) |
| 工作温度： | -40°C ~ 85°C |
Ultra-High-Efficiency White
LED Drivers
Pin Description (continued)
MAX1984
PIN
MAX1985
MAX1986
NAME
FUNCTION
Brightness Control Input (Multimode):
16
16
12
BITA
DPWM Mode: DPWM control signal input.
Analog Mode: Connect to IN.
2- or 3-Bit Parallel Mode: Digital input. Most significant bit (MSB).
Brightness Control Input:
DPWM Mode: Connect to IN.
17
17
13
BITC
Analog Mode: Connect to IN.
2-Bit Parallel Mode: Connect to GND.
3-Bit Parallel Mode: Digital input (LSB).
18
18
14
IN
Input Supply. IN provides power to the internal control circuitry and MOSFET
drivers. Bypass IN to GND with a minimum 0.1μF ceramic capacitor.
Brightness Control Mode Selection Input. Connect MODE and BITC to IN for
19
19
15
MODE
DPWM control. Connect MODE, BITA, and BITC to IN for analog control. For 2-bit
parallel control, connect MODE to IN and BITC to ground. For 3-bit parallel control,
connect MODE to GND.
LED Selection Input. Connect SEL to IN to turn on all LEDs. Connect SEL to ground
20
20
16
SEL
to turn on only LED1 – LED5 (MAX1984), LED1 – LED4 (MAX1985), or LED1 to LED3
(MAX1986). Leave SEL unconnected or force to V IN /2 to turn on only LED6 to LED8
(MAX1984), LED3 – LED6 (MAX1985), or LED4 (MAX1986).
V IN
2.7V TO 5.5V
C1
2 x 2.2 μ F
3
L1
10 μ H
2
18
C2
0.1 μ F
C3
14
REF
GND
LX
IN
OUT
1
0.22 μ F
V IN
13
SETI
MAX1984
LD1
4
D1
LD2
5
D2
16
15
BITA
BITB
LD3
LD4
6
7
D3
D4
BRIGHTNESS
CONTROL
LED SELECT
17
19
20
BITC
MODE
SEL
LD5
LD6
LD7
9
10
11
D5
D6
D7
8
LDG
LD8
12
D8
C4
2 x 2.2 μ F
Figure 1. Standard Application Circuit of the MAX1984
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