参数资料
型号: MAX16816ATJ+T
厂商: Maxim Integrated
文件页数: 21/33页
文件大小: 0K
描述: IC LED DRIVR HIGH BRIGHT 32-TQFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
拓扑: PWM,SEPIC,降压(降压),升压(升压)
输出数: 1
内部驱动器:
类型 - 主要: 车载
类型 - 次要: 高亮度 LED(HBLED)
频率: 125kHz ~ 500kHz
电源电压: 5.5 V ~ 76 V
安装类型: 表面贴装
封装/外壳: 32-WFQFN 裸露焊盘
供应商设备封装: 32-TQFN-EP(5x5)
包装: 带卷 (TR)
工作温度: -40°C ~ 125°C
Programmable Switch-Mode LED Driver
with Analog-Controlled PWM Dimming
Digital Soft-Start Duration Register (SS)
The MAX16816 programmable soft-start feature allows
the load current to ramp up in a controlled manner, elimi-
Table 8. Slope Compensation with Clock
Generated by RT Oscillator
nating output overshoot during startup. Soft-start begins
once the device is enabled and V CC has exceeded the
SLOPE
COMPENSATION
EEPROM ADDRESS
5.5V (min) rising threshold voltage. Adjust the soft-start
duration by configuring the EEPROM. Enter ‘111’ to dis-
able the soft-start feature. See Table 6.
Oscillator Enable/Disable Register (RTOF)
The MAX16816 features a programmable accurate
RTSYNC oscillator and resistor synchronized to an
external clock. Set the EEPROM bit RTOF to ‘1’ to dis-
able the external sync mode, and the RTSYNC oscilla-
tor, and to use the fixed internal frequency of 125kHz
as the switching frequency. Set RTOF to ‘0’ to synchro-
nize with an external oscillator or to program the exter-
nal oscillator frequency with an external resistor, R T .
See Table 7.
Slope Compensation Register (ESLP)
The MAX16816 uses an internally generated ramp to
stabilize the current loop when operating at duty cycles
above 50%. Set the compensating slope by adjusting
the peak ramp voltage through the on-chip EEPROM.
See Tables 8 and 9.
(mV/clock cycle)
0
20
40
60
80
100
120*
140
160
180
200
220
240
260
280
300
*Factory default
3Bh
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
3Ah
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
39h
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
38h
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Table 9. Slope Compensation with
Table 6. Digital Soft-Start Duration
External Clock Applied to RTSYNC or RT
DURATION
EEPROM ADDRESS
Oscillator Off
(μs)
36h
35h
34h
SLOPE
EEPROM ADDRESS
4096*
2048
1860
1024
768
512
256
No SS
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
COMPENSATION
(mV/μs)
0
2
4
6
8
10
12*
3Bh
0
0
0
0
0
0
0
3Ah
0
0
0
0
1
1
1
39h
0
0
1
1
0
0
1
38h
0
1
0
1
0
1
0
*Factory default
Table 7. Oscillator Enable/Disable
14
16
18
20
0
1
1
1
1
0
0
0
1
0
0
1
1
0
1
0
RT OSCILLATOR
RT Oscillator Off
RT Oscillator On*
EEPROM ADDRESS
37h
1
0
22
24
26
28
30
1
1
1
1
1
0
1
1
1
1
1
0
0
1
1
1
0
1
0
1
*Factory default
*Factory default
______________________________________________________________________________________
21
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MAX16818ATI+T 功能描述:LED照明驱动器 1.5MHz 30A w/Rapid LED Current Pulsing RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N
MAX16818ETI+ 功能描述:LED照明驱动器 1.5MHz 30A w/Rapid LED Current Pulsing RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N
MAX16818ETI+T 功能描述:LED照明驱动器 1.5MHz 30A w/Rapid LED Current Pulsing RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N