參數(shù)資料
型號： MAX1577YETA
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 穩(wěn)壓器
英文描述： 1.2A White LED Regulating Charge Pump for Camera Flashes and Movie Lights
中文描述： SWITCHED CAPACITOR REGULATOR, 1250 kHz SWITCHING FREQ-MAX, DSO8
封裝： 3 X 3 MM, 0.8 MM HEIGHT, MO-229, TDFN-8
文件頁數(shù)： 1/11頁
文件大?。?/td> 664K
代理商： MAX1577YETA
General Description
The MAX1577Y/MAX1577Z charge pumps drive white
LEDs, including camera strobes, with regulated current
up to 1.2A (guaranteed to 800mA). The very low open-
loop output resistance allows high flash brightness,
even from a low battery input voltage. The adaptive
1x/2x regulating charge-pump operation provides high
efficiency (up to 92%) while in movie mode or back-
lighting. Fast (1MHz) switching allows the use of tiny
external components.
The MAX1577Y/MAX1577Z use an external resistor to
set the full-scale LED current. Two enable inputs (EN1
and EN2) provide simple on/off control and LED current
of 20%, 33%, or 100% full scale. If there is less than
24mV across the external resistor, the output voltage is
regulated. The MAX1577Z has fixed 5.1V output-volt-
age regulation, while the MAX1577Y has logic-con-
trolled output voltage of 3.4V, 4.6V, or 5.1V for
backlighting, keyboard, and RGB applications.
The MAX1577Y/MAX1577Z are available in an 8-pin,
3mm x 3mm TDFN package (0.8mm max height).
Applications
White LED Flashes, Strobes, and Movie Lights
LCD Backlighting
Camera Phones, Cell Phones, and Smart Phones
PDAs, Digital Cameras, and Camcorders
Features
Up to 1.2A Output Drive Capability (800mA
Guaranteed)
Up to 92% P
LED
/ P
BATT
Efficiency for Movie
Mode
Flexible Brightness Control
Two-Bit Logic for 100%, 33%, 20%, and Off
PWM for 20% to 100%
3% Current Regulation Over Line and
Temperature
Current or Voltage Regulation for Flash and
Backlighting (MAX1577Y)
Current Regulation for Flash (MAX1577Z)
Low Ripple and EMI
2.7V to 5.5V Supply Voltage Range
Soft-Start Limits Inrush Current
Output-Voltage Regulation Mode
Thermal-Shutdown Protection
8-Pin 3mm x 3mm TDFN Package
M
1.2A White LED Regulating Charge Pump for
Camera Flashes and Movie Lights
________________________________________________________________
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
MAX1577Y
MAX1577Z
8
O
7
C
6
I
5
G
3
C
2
C
TDFN
4
E
1
E
TOP VIEW
Pin Configuration
Ordering Information
MAX1577Z
1
μ
F OR 2.2
μ
F
5.3V OVP
V
OUT
- (300mV OR
100mV OR 60mV)
UP TO 1.2A
2.7V TO 5.5V
4.7
μ
F
10
μ
F
100%,
33%, 20%,
AND
SHUTDOWN
CP
CN
EN1
IN
OUT
CS
GND
EN2
Typical Operating Circuit
19-3461; Rev 0; 11/04
PART
TEMP RANGE
PIN-
PACKAGE
TOP
MARK
MAX1577Y
ETA
-40°C to +85°C
8 TDFN
(T833-2)
AMG
MAX1577Z
ETA
-40°C to +85°C
8 TDFN
(T833-2)
AMQ
相關(guān)PDF資料
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX1577YETA+ 制造商:Maxim Integrated Products 功能描述:CHG PUMP STPUP/STPDN 3.4V/4.6V/5.1V 1200MA 8TDFN EP - Rail/Tube
MAX1577YETA+T 功能描述:LED照明驅(qū)動器 1.2A White LED 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(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N
MAX1577YETA-T 功能描述:LED照明驅(qū)動器 1.2A White LED 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(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N
MAX1577ZETA 制造商:Maxim Integrated Products 功能描述:1.1A WHITE LED REGULATING CHARGE PUMP FOR CAM - Bulk
MAX1577ZETA+ 制造商:Maxim Integrated Products 功能描述:CHG PUMP STPUP/STPDN 5.1V 1200MA 8TDFN EP - Rail/Tube
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