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参数资料
| 型号： | ADD5203ACPZ-RL |
| 厂商： | Analog Devices Inc |
| 文件页数： | 8/24页 |
| 文件大小： | 0K |
| 描述： | IC LED DRVR WHITE BCKLGT 28LFCSP |
| 标准包装： | 1 |
| 恒定电流： | 是 |
| 拓扑： | PWM，升压（升压） |
| 输出数： | 8 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 背光 |
| 类型 - 次要： | 白色 LED |
| 频率： | 350kHz ~ 1MHz |
| 电源电压： | 6 V ~ 21 V |
| 输出电压： | 45V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-WFQFN 裸露焊盘，CSP |
| 供应商设备封装： | 28-LFCSP-WQ（4x4） |
| 包装： | 标准包装 |
| 工作温度： | -25°C ~ 85°C |
| 其它名称： | ADD5203ACPZ-RLDKR |
ADD5203
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
PWMI 1
SEL1 2
21 PGND
20 PGND
SEL2 3
VDDIO 4
SDA 5
SCL 6
FB1 7
ADD5203
TOP VIEW
(Not to Scale)
19 C_FPWM
18 R_FPWM
17 I SET
16 NC
15 FB8
NOTES
1. NC = NO CONNECT.
2. CONNECT THE EXPOSED PADDLE TO GND.
Figure 3. Pin Configuration
Table 7. Pin Function Descriptions
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
Mnemonic
PWMI
SEL1
SEL2
VDDIO
SDA
SCL
FB1
FB2
FB3
FB4
AGND
FB5
FB6
FB7
FB8
NC
I SET
R_FPWM
C_FPWM
PGND
PGND
OVP
SW
SW
SHDN
VIN
FSLCT
COMP
EP
Description
PWM Signal Input.
Dimming Mode Selection 1.
Dimming Mode Selection 2.
Internal Linear Regulator Output. This regulator provides power to the ADD5203.
Serial Data Input/Output.
Serial Clock Input.
Regulated Current Sink. Connect the bottom cathode of the LED string to this pin.
Regulated Current Sink. Connect the bottom cathode of the LED string to this pin.
Regulated Current Sink. Connect the bottom cathode of the LED string to this pin.
Regulated Current Sink. Connect the bottom cathode of the LED string to this pin.
Analog Ground.
Regulated Current Sink. Connect the bottom cathode of the LED string to this pin. If unused, connect to GND.
Regulated Current Sink. Connect the bottom cathode of the LED string to this pin. If unused, connect to GND.
Regulated Current Sink. Connect the bottom cathode of the LED string to this pin. If unused, connect to GND.
Regulated Current Sink. Connect the bottom cathode of the LED string to this pin. If unused, connect to GND.
No Connection.
Full-Scale LED Current Set. A resistor from this pin to ground sets the LED current up to 30 mA.
Dimming frequency adjustment pin with an external resistor.
Dimming frequency adjustment pin with an external capacitor.
Power Ground.
Power Ground.
Overvoltage Protection.
Drain Connection of the Internal Power FET.
Drain Connection of the Internal Power FET.
Shutdown Control for PWM Input Operation Mode. Active low.
Supply Input. Must be locally bypassed with a capacitor to ground.
Frequency Select. A resistor from this pin to ground sets the boost switching frequency from 350 kHz to 1 MHz.
Compensation for Boost Converter. A capacitor and a resistor are connected in series between ground and
this pin for stable operation and an optional capacitor can be connected from this pin to ground.
Exposed Paddle. Connect the exposed paddle to ground.
Rev. 0 | Page 8 of 24
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