- 您现在的位置：买卖IC网 > PDF目录1849 > MAX8819AETI+T (Maxim Integrated Products)IC PMIC W/INT CHARGER 28TQFN-EP PDF资料下载
参数资料
| 型号： | MAX8819AETI+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 21/29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) |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页当前第21页第22页第23页第24页第25页第26页第27页第28页第29页
PMIC with Integrated Chargers and Smart
Power Selector in a 4mm x 4mm TQFN
The step-down regulator power inputs are critical dis-
continuous current paths that require careful bypass-
ing. In the PCB layout, place the step-down converter
input bypass capacitors as close as possible to each
pair of switching converter power input pins (PV_ to
PG_) to minimize parasitic inductance. If making con-
nections to these capacitors through vias, be sure to
use multiple vias to ensure that the layout does not
insert excess inductance or resistance between the
bypass capacitor and the power pins.
The input capacitor must meet the input ripple current
requirement imposed by the step-down converter.
Ceramic capacitors are preferred due to their low ESR
and resilience to power-up surge currents. Choose the
input capacitor so that its temperature rise due to input
ripple-current does not exceed approximately +10°C.
For a step-down DC-DC converter, the maximum input
ripple current is half of the output current. This maxi-
mum input ripple current occurs when the step-down
converter operates at 50% duty factor (V IN = 2 x V OUT ).
Bypass PV13 to PG1 and PG3 with a 4.7μF ceramic
capacitor. If REG2 is required, bypass PV2 to PG2 with
a 2.2μF capacitor. Use capacitors that maintain their
capacitance over temperature and DC bias. Ceramic
capacitors with an X7R or X5R temperature characteris-
tic generally perform well. The capacitor voltage rating
should be 6.3V or greater.
Table 3. Suggested Inductors
Step-Down Output Capacitors
The output capacitance keeps output ripple small and
ensures control-loop stability. The output capacitor must
have low impedance at the switching frequency.
Ceramic, polymer, and tantalum capacitors are suitable
with ceramic exhibiting the lowest ESR and lowest high-
frequency impedance. The MAX8819A/MAX8819B
require at least 10 μF of output capacitance. The
MAX8819C requires ar least 22μF of output capacitance.
As the case sizes of ceramic surface-mount capacitors
decreases, their capacitance vs. DC bias voltage char-
acteristic becomes poor. Due to this characteristic, it is
possible for 0805 capacitors to perform well while 0603
capacitors of the same value may not. The MAX8819A/
MAX8819B require a nominal output capacitance of
10μF, however, after their DC bias voltage derating, the
output capacitance must be at least 7.5μF.
Step-Down Inductor
Choose the step-down converter inductance to be
4.7μH. The minimum recommended saturation current
requirement is 700mA. In PWM mode, the peak induc-
tor currents are equal to the load current plus one half
of the inductor ripple current. See Table 3 for suggested
inductors.
MANUFACTURER
Sumida
Taiyo Yuden
TDK
TOKO
FDK
SERIES
CDRH2D11HP
CDH2D09
NR3012
NR3010
VLF3012
VLF3010
DE2812C
MIPF2520
MIPF2016
INDUCTANCE
(μH)
4.7
4.7
4.7
4.7
4.7
4.7
4.7
4.7
4.7
ESR
(m Ω )
190
218
130
190
160
240
130
110
160
CURRENT RATING
(mA)
750
700
770
750
740
700
880
1100
900
DIMENSIONS
(mm)
3.0 x 3.0 x 1.2 = (10.8mm) 3
3.0 x 3.0 x 1.0= (9.0mm) 3
3.0 x 3.0 x 1.2 = (10.8mm) 3
3.0 x 3.0 x 1.0 = (9.0mm) 3
2.8 x 2.6 x 1.2 = (8.7mm) 3
2.8 x 2.6 x 1.0 = (7.3mm) 3
3.0 x 2.8 x 1.2 = (10.8mm) 3
2.5 x 2.0 x 1.0 = (5mm) 3
2.0 x 1.6 x 1.0 = (3.2mm) 3
______________________________________________________________________________________
21
相关PDF资料 |
PDF描述 |
|---|---|
| MAX8819BETI+T | IC PMIC W/INT CHARGER 28-TQFN |
| MAX881REUB | IC LOW NOISE IS SUPP FET10-uMAX |
| MAX882CPA+ | IC REG LDO 3.3V/ADJ .2A 8-DIP |
| MAX8833ETJ+T | IC REG BUCK ADJ 3A DL 32TQFN |
| MAX8841ELT15+T | IC REG LDO 1.5V .15A 6UDFN |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 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 |
发布紧急采购，3分钟左右您将得到回复。