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參數(shù)資料
| 型號： | MAX1552 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Complete Power IC for Low-Cost PDAs |
| 中文描述： | 完備的電源芯片，用于低成本PDA |
| 文件頁數(shù)： | 1/12頁 |
| 文件大?。?/td> | 324K |
| 代理商： | MAX1552 |
General Description
The MAX1552 is a complete power-management chip for
low-cost personal digital assistants (PDAs) and portable
devices operating from a 1-cell lithium-ion (Li+), or 3-cell
NiMH, battery. It includes all the regulators, outputs, and
voltage monitors necessary for small PDAs while requir-
ing a bare minimum of external components. This device
features four linear regulators, a step-up DC-to-DC con-
verter for LCD bias, a microprocessor reset output, and
low battery detection in a miniature QFN package. For a
compatible Li+ charger for both USB and AC adapter
inputs, refer to the MAX1551*.
The four linear regulators feature PMOS pass elements for
efficient low-dropout operation. The MAIN LDO supplies
3.3V at over 300mA. An SD card slot output supplies 3.3V
at 200mA. The COR1 LDO outputs 1.5V at 200mA and
the COR2 LDO supplies 1.8V at 20mA. The SD output
and COR2 LDOs have pin-controlled shutdown. For other
output voltage combinations, contact Maxim.
The step-up DC-to-DC converter features an on-board
MOSFET and true shutdown when off. This means that
during shutdown, input power is disconnected from the
inductor so the boost output falls to 0V rather than
remaining one diode drop below the input voltage.
A μP reset output clears when the input voltage rises to
3.4V to ensure an orderly start. A low-battery output warns
the system of impending power loss for safe shutdown.
Thermal shutdown protects the die from overheating.
The MAX1552 operates from a 3.1V to a 5.5V supply
voltage and consumes 50μA no-load supply current. It
is packaged in a 1.3W, 16-pin thin QFN with a power
pad on the underside of the package. The MAX1552 is
specified for operation from -40°C to +85°C.
Applications
PDAs
Organizers
Cellular and Cordless Phones
MP3 Players
Hand-Held Devices
Features
o
Minimum External Components
o
4 Linear Regulator Outputs
Main LDO 3.3V, 300mA
SD Card Output 3.3V, 200mA
Core LDO 1.5V, 200mA
2nd Core LDO 1.8V, 30mA
o
High-Efficiency LCD Step-Up DC-to-DC Output
Up to 28V
LCD 0V True Shutdown When Off
o
50μA Quiescent Supply Current
o
1.3W Thin QFN Package
M
Complete Power IC for
Low-Cost PDAs
________________________________________________________________
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
Ordering Information
19-2831; Rev 0; 4/03
EVALUATION KIT
AVAILABLE
Pin Configuration appears at end of data sheet.
PART
TEMP RANGE
-40
°
C to +85
°
C
PIN-PACKAGE
16 Thin QFN
MAX1552ETE
MAX1552
MAIN
SDIG
SW
LX
LFB
GND
LBO
IN
SWIN
REF
ON
OFF
V
IN
ENSD
3.3V, 300mA
3.3V, 200mA
1.5V, 200mA
1.8V, 20mA
D1
LCD 20V, 1mA
ENC2
ENLCD
RESET OUT
LOW BATT OUT
RS
COR1
COR2
MAIN
SDIG
COR2
LCD
ON
OFF
ON
OFF
Typical Application Circuit
*
Protected by U.S. Patent #6,507,172.
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| MAX1552ETE | Complete Power IC for Low-Cost PDAs |
| MAX1553ETA | High-Efficiency, 40V Step-Up Converters for 2 to 10 White LEDs |
| MAX1553EVKIT | MAX1553 Evaluation Kit |
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1552ETE | 功能描述:PMIC 解決方案 Complete PMIC for PDAs RoHS:否 制造商:Texas Instruments 安裝風格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel |
| MAX1552ETE-T | 功能描述:PMIC 解決方案 Complete PMIC for PDAs RoHS:否 制造商:Texas Instruments 安裝風格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel |
| MAX1552EVKIT | 制造商:Maxim Integrated Products 功能描述:COMPLETE PMIC FOR LOW COST PDA'S - Rail/Tube |
| MAX1553ETA | 制造商:Maxim Integrated Products 功能描述:SMALLEST, HIGHEST-EFFICIENCY, 40V STEP-UP CON - Rail/Tube 制造商:Rochester Electronics LLC 功能描述: |
| MAX1553ETA+ | 制造商:Maxim Integrated Products 功能描述:LED DRVR 10SEGMENT 2.7V TO 5.5V 8TDFN EP - Rail/Tube |
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