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参数资料
| 型号： | MAX14578AEEWC+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 20/23页 |
| 文件大小： | 0K |
| 描述： | IC CHRGR DETECTOR USB LI+ 12WLP |
| 标准包装： | 2,500 |
| 功能： | 充电管理 |
| 电池化学： | 锂离子（Li-Ion） |
| 电源电压： | 2.8 V ~ 5.5 V, 3.5 V ~ 28 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | * |
| 封装/外壳： | * |
| 供应商设备封装： | * |
| 包装： | * |
MAX14578E/MAX14578AE
USB Battery Charger Detectors
ADDRESS = 0x58
0 = WRITE
REGISTER ADDRESS = 0x01
S
0
1
0
1
1
0
0
0
A
0
0
0
0
0
0
0
1
A/N
P
ADDRESS = 0x59
1 = READ
REGISTER 0x00 READ DATA
S
0
1
0
1
1
0
0
1
A
d7
d6
d5
d4
d3
d2
d1
d0
A/N
P
Figure 11. Format for Reads (Repeated START)
Table 4. CE_ Outputs for Different Charger Control
CE_
OUTPUTS
(CE0)
OFF
1
100mA
0
500mA
0
I SET
0
MAX8606,
MAX8856
—
MAX8814,
MAX8845
EN
SUS_LOW = 0
SUS_LOW = 1
CE1
CE2
CE_
OUTPUTS
(CE0)
CE1
CE2
1
1
OFF
1
0
0
0
0
100mA
0
0
0
0
1
500mA
0
0
1
1
0
I SET
0
1
0
EN1
EN2
MAX8934,
MAX8677
USUS
PEN1
PEN2
—
—
MAX8903
USUS
DCM
IUSB
() MAX14578AE only.
Applications Information
Charger Control
The MAX14578E charger-enable control outputs are
ideal for autonomous external charger control. Table 4
shows example connections for various Maxim chargers.
Hi-Speed USB
Hi-Speed USB requires careful PCB layout with 45 I
single-ended/90 I differential controlled-impedance
matched traces of equal lengths.
Power-Supply Bypassing
Bypass V B and BAT with 1 F F ceramic capacitors to GND
as close as possible to the device.
Choosing I 2 C Pullup Resistors
I 2 C requires pullup resistors to provide a logic-high level
to data and clock lines. There are trade-offs between
power dissipation and speed, and a compromise must
20
be made in choosing pullup resistor values. Every device
connected to the bus introduces some capacitance even
when device is not in operation. I 2 C specifies 300ns rise
times to go from low to high (30% to 70%) for fast-mode,
which is defined for a clock frequency up to 400kHz (see
the I 2 C Serial Interface (MAX14578E) section for details).
To meet the rise time requirement, choose pullup resis-
tors so that t R = 0.85 x R PULLUP x C BUS < 300ns. If the
transition time becomes too slow, the setup and hold
times may not be met and waveforms may not be rec-
ognized.
Extended ESD Protection
ESD-protection structures are incorporated on all pins
to protect against electrostatic discharges up to ±2kV
(Human Body Model) encountered during handling and
assembly. The CD- and CD+ pins are further protected
against ESD up to ±15kV (Human Body Model) and
Q 8kV IEC 61000-4-2 Contact Discharge without damage.
Maxim Integrated
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX14578AEWC+ | 制造商:Maxim Integrated Products 功能描述:USB CHARGER DETECTION IC - Rail/Tube |
| MAX14578AEWC+T | 制造商:Maxim Integrated Products 功能描述:USB CHARGER DETECTION IC - Tape and Reel |
| MAX14578EETE+ | 功能描述:电池管理 USB Battery Charger Detector RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| MAX14578EETE+T | 功能描述:电池管理 USB Battery Charger Detector RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| MAX14578EEWC+ | 功能描述:电池管理 USB Battery Charger Detector RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
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