參數(shù)資料
型號： DS1244Y
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： Timer or RTC
英文描述： 0 TIMER(S), REAL TIME CLOCK, PDIP28
封裝： 0.740 INCH, PLASTIC, DIP-28
文件頁數(shù)： 15/21頁
文件大?。?/td> 1965K
代理商： DS1244Y
MAX17129/MAX17149
Low-Cost, 6-String WLED Drivers with
Quick-PWM Step-Up Converter
3
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1. VIN = 12V, RISET = 100kI, TA = 0°C to +85°C, unless otherwise noted. Typical values are at TA = +25NC.) (Note 1)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
LED CURRENT SOURCE
ISET Resistance Range
44
250
kω
Full-Scale FB_ Output Current
RISET = 44.44kω
43.3
45
47.7
mA
RISET = 66.66kω
29.1
30
30.9
RISET = 100kω
19.4
20
20.6
RISET = 133.33kω
14.55
15
15.45
RISET = 200kω
9.65
10
10.35
RISET = 100kω, hybrid dimming mode
4.4
5
5.6
RISET = 250kI, hybrid dimming mode
1.4
2
2.6
ISET Output Voltage
1.225
1.250
1.275
V
Current Regulation Between
Strings
IFB_ = 30mA
-1.5
+1.5
%
IFB_ = 20mA
-2.0
+2.0
IFB_ = 15mA
-2.0
+2.0
IFB_ = 10mA
-2.75
+2.75
IFB_ = 5mA, hybid dimming ode
-6.0
+6.0
IFB_ = 2mA, hybrid dimming mode
-15.0
+15.0
Minimum FB_ Regulation Voltage
RISET = 66.66kI, 100% duty cycle
375
550
mV
RISET = 100kI, 100% duty cycle
275
365
RISET = 133.33kI, 100% duty cycle
200
275
RISET = 200kI, 100% duty cycle
125
200
FB_ On-Resistance
VFB_ = 50mV
20
ω
FB_ Leakage Current
VFB_ = 28V, TA = +25°C, EN = 0V, VOVP = 28V
0.05
1
A
VFB_ = 40V, TA = +25°C, EN = 0V, VOVP = 40V
2.5
5
FB_ On-Time
300
ns
BRT Input High Level
2.1
V
BRT Input Low Level
0.8
V
BRT Dimming Frequency
0.1
25
kHz
EN Input High Level
MAX17129/MAX17149 enabled, PWM dimming mode
2.1
V
MAX17129/MAX17149 enabled, hybrid dimming mode
1.4
1.8
EN Input Low Level
0.8
V
FAULT PROTECTION
OVP Overvoltage
Rising edge, hysteresis = 1.8V
44.1
45.1
46.1
V
FB_ Check LED Source Current
0.60
0.665
0.73
mA
FB_ Check LED Time
Sequence for 6 channels
1
ms
FB_ Open LED Threshold
500
700
mV
FB_ Overvoltage Threshold
6.7
8.0
9.6
V
Thermal-Shutdown Threshold
(Note 2)
+160
°C
Thermal-Shutdown Hysteresis
(Note 2)
15
°C
BOOST FREQUENCY SELECTION FSEL
FSEL Input High Level
Select fSW = 500kHz
2.1
V
FSEL Input Low Level
Select fSW = 1000kHz
0.8
V
相關(guān)PDF資料
PDF描述
DS1245AB-100 128K X 8 NON-VOLATILE SRAM MODULE, 100 ns, DMA32
DS1245Y-120 128K X 8 NON-VOLATILE SRAM MODULE, 120 ns, DMA32
DS1245AB-85 128K X 8 NON-VOLATILE SRAM MODULE, 85 ns, DMA32
DS1245Y-85 128K X 8 NON-VOLATILE SRAM MODULE, 85 ns, DMA32
DS1245Y-70 128K X 8 NON-VOLATILE SRAM MODULE, 70 ns, DMA32
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS1244Y120 制造商:Maxim Integrated Products 功能描述:
DS1244Y-120 制造商:Maxim Integrated Products 功能描述:
DS1244Y-150 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:
DS1244Y-200 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:256K NV SRAM with Phantom Clock
DS1244Y-70 功能描述:實時時鐘 RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時間格式:HH:MM:SS RTC 存儲容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube
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