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参数资料
| 型号： | MAX8600AETD+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 9/12页 |
| 文件大小： | 0K |
| 描述： | IC BATTERY CHARGER SGL 14TDFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 功能： | 充电管理 |
| 电池化学： | 锂离子（Li-Ion）、锂聚合物（Li-Pol） |
| 电源电压： | 0 V ~ 14 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 14-WFDFN 裸露焊盘 |
| 供应商设备封装： | 14-TDFN-EP（3x3） |
| 包装： | 带卷 (TR) |
Single-Input 1-Cell Li+ Charger with
OVP Protection and Programmable Charge Timer
? ? ? 1 ? ? 1 ? ? ?
? β ? ? ? ? ? ? ? ?
? ? 298 ? ? ??
R T = R 25 ° C × e ?? ? T + 273
Battery Temperature Control
The MAX8600A monitors battery temperature through a
negative TC thermistor. Select a thermistor resistance
that is 10k Ω at +25°C and has a beta of 3500. The IC
suspends charging when it is greater than 28.3k Ω or
less than 3.94k Ω , which translates to a temperature
limit of 0°C to +50°C. Table 1 shows the nominal tem-
perature limits that result from a wide range of available
thermistor temperature curves. The curves are defined
by the following equation:
?
where β is the BETA term in Table 1.
Connect THM to GND to disable the temperature-con-
trol function. When R THM disables charging, all timers
pause and hold their value.
Capacitor Selection
Connect a 2.2μF ceramic capacitor from BAT to GND
for proper stability. Connect a 1μF ceramic capacitor
from DC to GND. Use a larger input bypass capacitor
for high charging currents to reduce supply noise. All
capacitors should be X5R dielectric or better. Be aware
that some capacitors have large voltage coefficients
that reduce actual capacitance at higher operating volt-
ages and should be avoided.
Thermal Considerations
The MAX8600A is in a thermally enhanced TDFN pack-
age with an exposed paddle. Connect the exposed pad-
dle of the package to a large copper ground plane to
provide a thermal contact between the device and the
circuit board. The exposed paddle transfers heat away
from the device, allowing the IC to charge the battery
with maximum current, while minimizing the increase in
die temperature. Note that the MAX8600A’s thermal-limit
control allows the charger to be tolerant of thermally
restricted PCB layouts that are sometimes unavoidable
in compact portable designs. With such non-optimal lay-
outs, the charger still operates, but can reduce charge
current to manage temperature rise.
DC Input Sources
The MAX8600A operating input voltage range is 4.1V to
6.0V. The device survives input voltages up to 16V
without damage to the IC. If the input voltage is greater
than 6.5V (typ), the IC stops charging. An appropriate
power supply must provide at least 4.2V plus the volt-
age drop across the internal pass transistor when
sourcing the desired maximum charging current.
V IN(MIN) > 4.2V + I CHARGE(MAX) x R ON
where R ON is the input-to-BAT resistance (typically
0.25 Ω ). Failure to meet this requirement results in an
incomplete charge or increased charge time.
Layout and Bypassing
Connect the input capacitors as close as possible to the
device. Provide a large copper GND plane to allow the
exposed paddle to sink heat away from the device.
Connect the battery to BAT as close as possible to the
IC to provide accurate battery voltage sensing. Make all
high-current traces short and wide to minimize voltage
drops. For an example layout, refer to the MAX8600A
Evaluation Kit.
Chip Information
TRANSISTOR COUNT: 6838
PROCESS: BiCMOS
_______________________________________________________________________________________
9
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX8600ETD+ | 制造商:Maxim Integrated Products 功能描述:PROT LI-ION/LI-POL 1A 4.2V 14TDFN EP - Rail/Tube |
| MAX8600ETD+T | 功能描述:电池管理 Single-Input 1-Cell Li+ Charger With Ovp 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 |
| MAX8600ETD-T | 制造商:Maxim Integrated Products 功能描述:SINGLE-INPUT, 1-CELL LI+ CHARGER W. OVP PROTE - Tape and Reel |
| MAX8601ETD | 制造商:Maxim Integrated Products 功能描述:USB/AC-ADAPTER/DUAL-INPUT 1-CELL LI - Rail/Tube |
| MAX8601ETD/V+T | 功能描述:电池管理 Dual-Input 1-Cell Li+ Charger With Ovp 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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