参数资料
型号: MAX8819BETI+
厂商: Maxim Integrated Products
文件页数: 15/29页
文件大小: 0K
描述: IC PMIC W/INT CHARGER 28-TQFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
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
PMIC with Integrated Chargers and Smart
Power Selector in a 4mm x 4mm TQFN
BATTERY
DESIRED
CAPACITY CHARGE R7 (k Ω ) CHARGE
(mAh)
RATE (C)
AC-TO-DC
ADAPTER C1
4.7 μ F
DLIM1 DLIM2 DC I LIM (mA)
0 0 1000
0 1 475
1 0 95
DC
DLIM1
DLIM2
SMART
POWER
SELECTOR
GLITCH FILTER
Li+/Li-Poly
BATTERY
CHARGER AND
SYSTEM LOAD
SWITCH
SYS
BAT
C5
10 μ F
C6
4.7 μ F
+
SYS
Li+/LiPo
BATTERY
300 0.7 14.3 210
400 0.7 10.7 280
600 0.7 7.15 420
900 0.7 4.75 632
FAST-
CURRENT
(mA)
800 0.7 5.36 560
1
1
SUSPEND
CEN
CISET
R2
OUT1
ON
OFF
R6
BIAS
CHG
470k Ω
CHG
MAX8819A
MAX8819B
MAX8819C
PV13
PV13
SYS
C7
4.7 μ F
ON
OFF
EN123
EN
PWM
REG1
STEP-DOWN
DC-DC
LX1
FB1
PG1 L1
4.7 μ H
R8
200k Ω
C8*
10 μ F
3.0V
400mA
OUT1
SYS
C2
0.1 μ F
L4
10 μ H
PG4
D7
LX4
OVP4
REG1/RESET
87% FALLING
PG1
RST1
R9
PG1 100k Ω
PG1
R10
470k Ω
OUT1
RST1
OUT4
C3
0.1 μ F
D1
PG4
50us BLANKING
92% RISING
80ms DELAY
X7R
L2
50V
PG4
UP TO 6
WLED
D2
D3
D4
D5
PG4
COMP4
C4
0.022 μ F
REG4
STEP-UP
DC-DC
EN
PWM
REG2
STEP-DOWN
DC-DC
PV2
LX2
FB2
PG2
C9
2.2 μ F
PG2
4.7 μ H
R12
80.6k Ω
SYS
C10*
10 μ F
PG2
1.8V
200mA
OUT2
D6
FB4
PV13
PG2
R13
100k Ω
R1
20
(25mA)
ON
EN4
PULSE
EN
REG3
STEP-DOWN
DC-DC
LX3
FB3
L3
4.7 μ H
R14
20.0k Ω
C11*
10 μ F
1.2V
300mA
OUT3
OFF
DIMMING
PWM
PG3
PG3
R15
GND
EP
PG3 100k Ω
*22 μ F FOR MAX8819C IS RECOMMENDED.
Figure 1. Functional Diagram/Typical Applications Circuit
Detailed Description
The MAX8819_ is a complete power solution that
includes a battery charger, step-down converters, and
WLED power. As shown in Figure 1, the IC integrates a
DC power input, Li+/Li-Poly battery charger, three step-
down converters, and one step-up converter for powering
white LEDs. All three step-down converters feature
adjustable output voltages set with external resistors.
The MAX8819_ has one external power input that con-
nects to either an AC-to-DC adapter or USB port. Logic
inputs DLIM1 and DLIM2 select the desired input cur-
rent limit.
______________________________________________________________________________________
15
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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
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