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參數資料
| 型號： | MAX8819DETI+ |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | PMIC with Integrated Charger and Smart Power Selector™ in a 4mm x 4mm TQFN; Package: THIN QFN, 28 pin ; Temperature Range: -40°C to +85°C |
| 中文描述： | 3-CHANNEL POWER SUPPLY MANAGEMENT CKT, QCC28 |
| 封裝： | 4 X 4 MM, ROHS COMPLIANT, TQFN-28 |
| 文件頁數： | 1/29頁 |
| 文件大小： | 510K |
| 代理商： | MAX8819DETI+ |
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General Description
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/MAX8819D offer 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
to prevent charger overheating.
Applications
MP3 Players
Portable GPS Devices
Low-Power Handheld Products
Cellular Telephones
Digital Cameras
Handheld Instrumentation
PDAs
Features
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
RST1 Output
Short-Circuit/Thermal-Overload/Input
Undervoltage/Overvoltage Protection
Power-Up Sequencing (MAX8819C/MAX8819D)
Total Solution Size: Less Than 90mm2
MAX8819A–MAX8819D
PMIC with Integrated Chargers and Smart
Power Selector in a 4mm x 4mm TQFN
________________________________________________________________
Maxim Integrated Products
1
19-4166; Rev 0; 6/08
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.
Pin Configuration appears at end of data sheet.
Smart Power Selector is a trademark of Maxim Integrated
Products, Inc.
USB/AC-TO-DC
ADAPTER
ENABLE SYSTEM
ENABLE CHARGER
ENABLE BACKLIGHT
SYS
DC
DLIM1
DLIM2
EN123
CEN
EN4
LX4
OVP4
FB4
LX3
LX2
CISET
BAT
SYS
Li+/Li-Poly
BATTERY
OUT1
I/O
OUT2
MEMORY
OUT3
CORE
CHG
LX1
RST1
MAX8819_
+
Typical Operating Circuit
Ordering Information
+
Denotes a lead-free/RoHS-compliant package.
*
Future product—contact factory for availability.
**
EP = Exposed pad.
PART
TEMP RANGE
PIN-
PACKAGE
SYS
VOLTAGE
(V)
MAX8819AETI+ -40°C to +85°C 28 TQFN-EP**
4.35
MAX8819BETI+ -40°C to +85°C 28 TQFN-EP**
5.3
MAX8819CETI+ -40°C to +85°C 28 TQFN-EP**
4.35
MAX8819DETI+ -40°C to +85°C 28 TQFN-EP**
5.3
EVALUATION KIT
AVAILABLE
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MAX8819DETI+ | 功能描述:PMIC 解決方案 PMIC w/Charger & Smart Power Selector RoHS:否 制造商:Texas Instruments 安裝風格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel |
| MAX8819DETI+T | 功能描述:PMIC 解決方案 PMIC w/Charger & Smart Power Selector RoHS:否 制造商:Texas Instruments 安裝風格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel |
| MAX881REUB | 功能描述:PMIC 解決方案 Bias Supply w/Power OK for GaAsFET PA RoHS:否 制造商:Texas Instruments 安裝風格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel |
| MAX881REUB+ | 功能描述:PMIC 解決方案 Bias Supply w/Power OK for GaAsFET PA RoHS:否 制造商:Texas Instruments 安裝風格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel |
| MAX881REUB+T | 功能描述:PMIC 解決方案 Bias Supply w/Power OK for GaAsFET PA RoHS:否 制造商:Texas Instruments 安裝風格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel |
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