参数资料
型号: MAX16814AUP+T
厂商: Maxim Integrated
文件页数: 3/25页
文件大小: 0K
描述: IC LED DVR HI-BRIGHT 4CH 20TSSOP
标准包装: 2,500
恒定电流:
拓扑: 回扫,高端,PWM,SEPIC,降压(降压),升压(升压)
输出数: 4
内部驱动器:
类型 - 主要: 汽车,背光,通用型
类型 - 次要: 高亮度 LED(HBLED),白色 LED
频率: 200kHz ~ 2MHz
电源电压: 4.75 V ~ 40 V
输出电压: 40V
安装类型: 表面贴装
封装/外壳: 20-TSSOP(0.173",4.40mm 宽)裸露焊盘
供应商设备封装: 20-TSSOP-EP
包装: 带卷 (TR)
工作温度: -40°C ~ 125°C
MAX16814
Integrated, 4-Channel, High-Brightness LED
Driver with High-Voltage DC-DC Controller
ELECTRICAL CHARACTERISTICS (continued)
(V IN = V EN = 12V, R RT = 12.25k I , R SETI = 15k I , C VCC = 1 F F, V CC = V DRV , NDRV = COMP = OUT_ = unconnected, V RSDT = V DIM
= V CC , V OVP = V CS = V LEDGND = V PGND = V SGND = 0V, T A = T J = -40 N C to +125 N C for MAX16814A_ _, T A = -40 N C to +85 N C for
MAX16814BE_ _, and T A = T J = 0 N C to +85 N C for MAX16814U_ _ and MAX16814BU_ _, unless otherwise noted. Typical values are at
T A = +25 N C.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
f SW = 200kHz to 600kHz, MAX16814A_ _
and MAX16814U_ _
85
89
93
Maximum Duty Cycle
Oscillator Frequency Accuracy
f SW = 600kHz to 2000kHz, MAX16814A_ _
and MAX16814U_ _
f SW = 200kHz to 600kHz, MAX16814B_ _
f SW = 600kHz to 2000kHz, MAX16814B _ _ _
f SW = 200kHz to 2MHz, MAX16814A_ _
and MAX16814U_ _
82
90
86
-7.5
86
94
90
90
98
94
+7.5
%
%
Sync Rising Threshold
Minimum Sync Frequency
PWM COMPARATOR
PWM Comparator Leading-Edge
Blanking Time
f SW = 200kHz to 2MHz, MAX16814B_ _ _
-7
4
1.1f SW
60
+7
V
Hz
ns
PWM to NDRV Propagation Delay
Including leading-edge blanking time
90
ns
SLOPE COMPENSATION
Peak Slope Compensation
Current Ramp Magnitude
Current ramp added to the CS input,
MAX16814A_ _ only
Current ramp added to the CS input,
MAX16814U_ _ and MAX16814B_ _ _
44
45
49
50
54
55
μA x f SW
CS LIMIT COMPARATOR
Current-Limit Threshold
CS Limit Comparator to NDRV
Propagation Delay
(Note 3)
10mV overdrive, excluding leading-edge
blanking time
396
416
10
437
mV
ns
ERROR AMPLIFIER
OUT_ Regulation Voltage
1
V
Transconductance
No-Load Gain
g M
(Note 4)
340
600
75
880
μS
dB
COMP Sink Current
COMP Source Current
V OUT_ = 5V, V COMP = 2.5V
V OUT_ = 0V, V COMP = 2.5V
160
160
375
375
800
800
μA
μA
MOSFET DRIVER
NDRV On-Resistance
Peak Sink Current
Peak Source Current
Rise Time
Fall Time
I SINK = 100mA (nMOS)
I SOURCE = 100mA (pMOS)
V NDRV = 5V
V NDRV = 0V
C LOAD = 1nF
C LOAD = 1nF
0.9
1.1
2.0
2.0
6
6
ω
A
A
ns
ns
LED CURRENT SOURCES
OUT_ Current-Sink Range
Channel-to-Channel Matching
V OUT_ = V REF
I OUT_ = 100mA
I OUT_ = 100mA, all channels on
20
150
±2
± 1.5
mA
%
Maxim Integrated
3
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