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参数资料
| 型号： | MAX8819AETI+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 29/29页 |
| 文件大小： | 0K |
| 描述： | IC PMIC W/INT CHARGER 28TQFN-EP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 应用： | 手持/移动设备 |
| 电源电压： | 4.1 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： | 带卷 (TR) |
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PMIC with Integrated Chargers and Smart
Power Selector in a 4mm x 4mm TQFN
constant is R x C = 100 μs, and the output voltage
decays to within 1% of final value in about 500μs.
PCB Layout and Routing
Good printed circuit board (PCB) layout is necessary to
achieve optimal performance. Refer to the MAX8819A
Evaluation Kit for Maxim’s recommended layout.
Use the following guidelines for the best results:
? The LX_ rapidly switches between PV_ and PG_.
Minimize stray capacitance on LX_ to maintain high
efficiency.
? Keep the FB_ node away from noise sources such
as the inductor.
? The exposed pad (EP) is the main path for heat to
exit the IC. Connect EP to the ground plane with
thermal vias to allow heat to dissipate from the
device.
? Use short and wide traces for high-current and dis-
8819_ETI
TIyww
+ aaaa
Figure 11. Package Marking Example
Pin Configuration
TOP VIEW
continuous current paths.
21
20
19
18
17
16
15
? The step-down converter power inputs are critical
discontinuous current paths that require careful
bypassing. Place the step-down converter input
bypass capacitor as close as possible to the PV_
FB2 22
FB3 23
EN123 24
14
13
12
CISET
FB1
CEN
and PG_ pins.
? Minimize the area of the loops formed by the step-
down converters’ dynamic switching currents.
Package Marking
PV2 25
LX2 26
PG2 27
DLIM2 28
MAX8819A
MAX8819B
MAX8819C
EXPOSED PAD (EP)
11
10
9
8
DC
SYS
BAT
RST1
The top of the MAX8819_ package is laser etched as
shown in Figure 11:
+
1
2
3
4
5
6
7
“8819_ETI” is the product identification code. The full
part number is MAX8819_ETI; however, in this case, the
“MAX” prefix is omitted due to space limitations. The “_”
corresponds to the “A” or “B” version.
“yww ” is a date code. “y ” is the last number in the
Gregorian calendar year. “ww” is the week number in
the Gregorian calendar. For example:
? “801 ” is the first week of 2008; the week of
PROCESS: S45T
Chip Information
January 1st, 2008.
? “052” is the fifty-second week of 2010; the week of
December 27th, 2010.
? “aaaa” is an assembly code and lot code.
? “+ ” denotes lead-free packaging and marks the
pin 1 location.
Package Information
For the latest package outline information and land patterns, go
to www.maxim-ic.com/packages .
PACKAGE TYPE PACKAGE CODE DOCUMENT NO.
28 TQFN-EP T2844+1 21-0139
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 29
? 2009 Maxim Integrated Products
Maxim is a registered trademark of Maxim Integrated Products, Inc.
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相关代理商/技术参数 |
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|---|---|
| MAX8819AEVKIT+ | 功能描述:PMIC 解决方案 Evaluation Kit for the MAX8819A MAX8819B MAX8819C and MAX8819D RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
| MAX8819BETI+ | 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 |
| MAX8819BETI+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 |
| MAX8819CETI+ | 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 |
| MAX8819CETI+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 |
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