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| 型号： | MAX8819DETI+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/29页 |
| 文件大小： | 0K |
| 描述： | IC PMIC W/INT CHARGER 28-TQFN |
| 标准包装： | 75 |
| 应用： | 手持/移动设备 |
| 电源电压： | 2.6 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-WFQFN 裸露焊盘 |
| 供应商设备封装： | 28-TQFN-EP（4x4） |
| 包装： | 管件 |
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ATION
EVALU
AVAIL
19-4166; Rev 1; 4/09
KIT
ABLE
PMIC with Integrated Chargers and Smart
Power Selector in a 4mm x 4mm TQFN
General Description
Features
The MAX8819_ is a complete power solution for MP3
players and other handheld applications. The IC
includes a battery charger, step-down converters, and
WLED power. It features an input current-limit switch to
power the IC from an AC-to-DC adapter or USB port, a
1-cell lithium ion (Li+) or lithium polymer (Li-Poly) charg-
er, three step-down converters, and a step-up converter
with serial step dimming for powering two to six white
LEDs. All power switches for charging and switching the
system load between battery and external power are
included on-chip. No external MOSFETs are required.
The MAX8819C offers a sequenced power-up/power-
down of OUT1, OUT2, and then OUT3.
Maxim’s Smart Power Selector? makes the best use of
AC-to-DC adapter power or limited USB power. Battery
charge current and input current limit are independent-
ly set. Input power not used by the system charges the
battery. Charge current is resistor programmable and
the input current limit can be selected as 100mA,
500mA, or 1A. Automatic input selection switches the
system load from battery to external power. In addition,
on-chip thermal limiting reduces the battery charge rate
?
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Smart Power Selector
Operates with No Battery Present
USB/AC Adapter One-Cell Li+ Charger
Three 2MHz Step-Down Converters
95% Peak Efficiency
100% Duty Cycle
±3% Output Accuracy over Load/Line/
Temperature
2 to 6 Series WLED Driver with Dimming Control
Active-Low REG1 Reset Output
Short-Circuit/Thermal-Overload/Input
Undervoltage/Overvoltage Protection
Power-Up/Down Sequencing (MAX8819C)
Total Solution Size: Less Than 90mm 2
Typical Operating Circuit
USB/AC-TO-DC
ADAPTER
to prevent charger overheating.
MP3 Players
Applications
DC
DLIM1
DLIM2
SYS
BAT
Portable GPS Devices
+
Li+/Li-Poly
Low-Power Handheld Products
Cellular Telephones
ENABLE SYSTEM
ENABLE CHARGER
EN123
CEN
BATTERY
Digital Cameras
Handheld Instrumentation
ENABLE BACKLIGHT
SYS
EN4
LX4
MAX8819_
LX1
OUT1
I/O
PDAs
Ordering Information
OVP4
LX2
OUT2
MEMORY
PART
TEMP RANGE
PIN-
PACKAGE
SYS
VOLTAGE
(V)
LX3
OUT3
CORE
MAX8819A ETI+
-40°C to +85°C 28 TQFN-EP*
4.35
CISET
MAX8819B ETI+
MAX8819C ETI+
-40°C to +85°C 28 TQFN-EP*
-40°C to +85°C 28 TQFN-EP*
5.3
4.35
FB4
CHG
RST1
CHG
RST1
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
Smart Power Selector is a trademark of Maxim Integrated
Products, Inc.
Pin Configuration appears at end of data sheet.
________________________________________________________________ Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX8819DETI+ | 功能描述:PMIC 解决方案 PMIC w/Charger & Smart Power Selector RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
| MAX8819DETI+T | 功能描述:PMIC 解决方案 PMIC w/Charger & Smart Power Selector RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
| MAX881REUB | 功能描述:PMIC 解决方案 Bias Supply w/Power OK for GaAsFET PA RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
| MAX881REUB+ | 功能描述:PMIC 解决方案 Bias Supply w/Power OK for GaAsFET PA RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
| MAX881REUB+T | 功能描述:PMIC 解决方案 Bias Supply w/Power OK for GaAsFET PA RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
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