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參數(shù)資料
| 型號： | MAX1575 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | White LED 1x/1.5x Charge Pump for Main and Sub-Displays |
| 中文描述： | 白光LED、 1倍/1.5倍電荷泵，適用于主屏和次屏顯示器 |
| 文件頁數(shù)： | 1/4頁 |
| 文件大?。?/td> | 86K |
| 代理商： | MAX1575 |
General Desc ription
The MAX1575 evaluation kit (EV kit) is a fully assem-
bled and tested circuit for evaluating the MAX1575
white LED 1x/1.5x charge pump. The MAX1575 drives
4 white LEDs in a main display group and 2 white LEDs
in a sub-group. These 6 surface-mount white LEDs are
included on the EV kit. In addition to the LED driver cir-
cuit, the EV kit includes two pulse-generator circuits on
the left side of the PC board that are used for testing
the single-wire serial pulse-dimming feature of the
MAX1575.
Features
Powers 4 Main and 2 Sub-Display LEDs
Average 85% Efficiency (P
LED
/ P
BATT
) over Li+
Battery Discharge
1.5% LED Current Matching
Adaptive 1x/1.5x Mode Switchover
Low Input Ripple and EMI
Individual 5% to 100% Brightness Single-Wire
Serial Pulse Dimming
2.7V to 5.5V Supply Voltage Range
Thin QFN 4mm x 4mm IC Package
Fully Assembled and Tested
E
MAX 1575 Evaluation K it
________________________________________________________________
Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
19-3335; Rev 0; 7/04
Quic k S tart
Rec ommended Equipment
A 2.7V to 5.5V power supply or battery capable of
delivering 200mA.
Proc edure
Follow the steps below to verify board operation.
1) Verify that shunts are connected across pins 1-2 of
jumpers J U2 and J U3.
2) Preset the power supply to between 2.7V and 5.5V.
3) Turn off the power supply. Do not turn on the power
supply until all connections are completed.
4) Connect the positive power supply terminal to the
pad on the EV kit labeled IN.
5) Connect the power supply ground terminal to the
pad on the EV kit labeled GND.
6) Turn on the power supply and verify that the LEDs
are lit.
See the
Detailed Description
section for testing the
dimming and shutdown features.
DESIGNATION
QTY
DESCRIPTION
C1–C4
4
1μF
±
20%, 6.3V X5R ceramic
capacitors (0402)
Panasonic ECJ 0EB0J 105M or
TDK C1005X5R0J 105M or
equivalent
C5, C8
2
2.2μF
±
10%, 6.3V X5R ceramic
capacitors (0603)
Panasonic ECJ 1VB0J 225K or
TDK C1608X5R0J 225K or
equivalent
C6, C7
2
0.01μF
±
10%, X7R ceramic
capacitors (0402)
TDK C1005X7R1E103K or
equivalent
D1–D6
6
White surface-mount
right-angle LEDs
Nichia NSCW215T
D7, D8
2
Diodes (SOD-323)
Central CMDD4448
J U1
0
Not installed, PC board short
J U2, J U3
2
3-pin headers
R1
1
6.81k
±
1% resistor (0402)
R2, R3
2
10k
±
5% resistors (0402)
S1, S2
2
Momentary pushbutton switches
Panasonic EVQ-PHP03T
U1
1
Maxim MAX1575ETE
(16 thin QFN 4mm x 4mm)
U2, U3
2
MAX6818EUS-T (4-pin SOT143)
—
2
Shunt, 2 position
PART
TEMP RANGE
0
°
C to +70
°
C
IC PACKAGE
16 Thin QFN (4mm x 4mm)
MAX1575EVKIT
Ordering Information
Component List
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1575ETE | 功能描述:LED照明驅(qū)動器 White LED 1x/1.5x Charge Pump RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:SO-16N |
| MAX1575ETE/V+ | 功能描述:LED照明驅(qū)動器 White LED 1x/1.5x Charge Pump for Main and Sub-Displays RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:SO-16N |
| MAX1575ETE/V+T | 功能描述:LED照明驅(qū)動器 White LED 1x/1.5x Charge Pump for Main and Sub-Displays RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:SO-16N |
| MAX1575ETE+ | 功能描述:LED照明驅(qū)動器 White LED 1x/1.5x Charge Pump RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:SO-16N |
| MAX1575ETE+T | 功能描述:LED照明驅(qū)動器 White LED 1x/1.5x Charge Pump RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:SO-16N |
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