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参数资料
| 型号： | MAX8819BETI+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 13/29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 |
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PMIC with Integrated Chargers and Smart
Power Selector in a 4mm x 4mm TQFN
Typical Operating Characteristics (continued)
(Circuit of Figure 1, T A = +25°C, unless otherwise noted.)
25.5
25.4
25.3
25.2
25.1
25.0
24.9
24.8
24.7
24.6
24.5
MAXIMUM LED CURRENT
vs. TEMPERATURE
0.750
0.745
0.740
0.735
0.730
MINIMUM LED CURRENT
vs. TEMPERATURE
-40
-15
10 35
60
85
-40
-15
10 35
60
85
TEMPERATURE ( ° C)
TEMPERATURE ( ° C)
Pin Description
PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
NAME
COMP4
FB4
OVP4
PG4
LX4
GND
EN4
RST1
BAT
SYS
DC
CEN
FB1
FUNCTION
External Compensation Capacitor for REG4
REG4 Feedback Input
Overvoltage Protection Node for REG4
REG4 Power Ground
Inductor Switching Node for REG4
Analog Ground
REG4 Enable Input and Dimming Control Digital Input
Active-Low, Open-Drain Reset Output. RST1 pulls low to indicate that FB1 is below its regulation
threshold. RST1 goes high 200ms after FB1 reaches its regulation threshold. RST1 is high-impedance
when EN123 is low, and DC is unconnected.
Positive Battery Terminal Connection. Connect BAT to the positive terminal of a single-cell Li+/Li-Poly
battery. Bypass BAT to GND with a 4.7μF ceramic capacitor.
System Supply Output. Bypass SYS to GND with a 10μF ceramic capacitor. When a valid voltage is
present at DC and DLIM[1:2] ≠ 11, V SYS is limited to 4.35V (MAX8819A/MAX8819C) or 5.3V
(MAX8819B). When the system load (I SYS ) exceeds the input current limit, V SYS drops 75mV
(V BSREG ) below V BAT , allowing both the external power source and the battery to service SYS. SYS is
connected to BAT through an internal 70m Ω system load switch when a valid source is not present at
DC.
DC Power Input. DC is capable of delivering 1A to SYS. DC supports both AC adapters and USB
inputs. As shown in Table 1, the DC current limit is controlled by DLIM1 and DLIM2.
Battery Charger Enable Input
Feedback Input for REG1. Connect FB1 to the center of a resistor voltage-divider from the REG1
output capacitors to GND to set the output voltage from 1V to V SYS .
______________________________________________________________________________________
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 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 |
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