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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)： | 21/21頁 |
| 文件大?。?/td> | 1965K |
| 代理商： | DS1244Y |
MAX17129/MAX17149
Low-Cost, 6-String WLED Drivers with
Quick-PWM Step-Up Converter
9
Pin Configuration
Pin Description
15
16
14
13
5
6
7
IN
FSEL
8
BRT
FB3
FB2
FB5
1
3
GND
4
12
10
9
ISET
EN
EP
FB1
OVP
PGND
LX
MAX17129
MAX17149
V CC
FB4
2
11
FB6
THIN QFN
3mm × 3mm
TOP VIEW
+
PIN
NAME
FUNCTION
1
BRT
PWM Signal Input. This PWM signal controls the LED brightness by turning the LED current sources on
or off.
2
VCC
Internal LDO Output. VCC provides bias supply to the devices. VCC is generated by internal LDO.
Connect a minimum 1FF capacitor from VCC to GND. All power outputs are disabled until VCC
exceeds its UVLO threshold. See the Input Supply Voltage Configuration and UVLO section for supply
configurations for the ICs.
3
IN
Supply Input. Connect IN to the system input supply voltage and bypass IN to GND with a minimum
0.1FF ceramic capacitor. The ICs are disabled if VIN falls below its UVLO threshold. The devices can
extend the operating range down to 3.0V if IN and VCC are tied together. See the Input Supply Voltage
Configuration and UVLO section.
4
FSEL
Step-Up Converter Switching Frequency Selection Input. Connect to VCC with a 10kω resistor to set
500kHz, or connect to GND to set 1MHz.
5
LX
Step-Up Regulator Switching Node. Connect inductor and output diode here and minimize trace area
for lowest EMI.
6
PGND
Power Ground
7
OVP
Boost Output Voltage-Sensing Input. This voltage is used for overvoltage protection.
8
FB1
Current-Balancer Output. LED string cathode connection. FB1 is the open-drain output of an internal
regulator, which controls current through FB1. FB1 can sink up to 45mA. If unused, connect FB1 to
GND or leave high impedance.
9
FB2
Current-Balancer Output. LED string cathode connection. FB2 is the open-drain output of an internal
regulator, which controls current through FB2. FB2 can sink up to 45mA. If unused, connect FB2 to
GND or leave high impedance.
相關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 |
相關代理商/技術參數(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: 安裝風格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
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