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参数资料
| 型号： | MP2607DL |
| 厂商： | MONOLITHIC POWER SYSTEMS INC |
| 元件分类： | 电源管理 |
| 英文描述： | POWER SUPPLY SUPPORT CKT, QCC14 |
| 封装： | 3 X 4 MM, MO-229VEED-5, QFN-14 |
| 文件页数： | 4/15页 |
| 文件大小： | 317K |
| 代理商： | MP2607DL |
MP2607 – LI-ION CHARGER WITH POWER PATH MANAGEMENT
MP2607 Rev. 0.9
www.MonolithicPower.com
12
11/2/2009
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
2009 MPS. All Rights Reserved.
Charging
current
USB port
current
SYS load
current
BATT voltage
SYS voltage
Battery
supplements load
Figure 3—Power Path Management for USB
Mode
Power path management allows use of lower
current limited sources while still provides
continuous system supply and optimal battery
charging at the same time.
USB Mode Input Switch Current Limit
When IN is connected to an USB port, the
switch between IN and SYS has a built-in
current limit that is set by an internal resistor
with typical value of 450mA. Post-package
trimming keeps the variation within +-5%.
Charging Current Thermal Fold-back
MP2607 has internal monitoring circuit that will
reduce the charging current if the chip junction
temperature reaches 120°C. This prevents
overheat of the chip and avoids unnecessary
thermal shutdown.
Floating Charging Voltage
The floating voltage for the constant voltage
regulation phase is 4.2V. It has ±0.75%
accuracy over the ambient temperature range
of -10°C to +70°C.
Auto Recharge
MP2607 automatically recharge the battery if
BATT pin voltage falls below a predetermined
threshold VRECHG. This allows the battery to
always stay at full or near full condition,
increasing the battery life.
Status Indication output
STAT1 and STAT1 are two open-drain NMOS
outputs which should be connected to pull-up
resistors to SYS output or desired supply rail.
Their output logic level combinations are used
to indicate 4 status of the charger:
Regardless of the charger status, however, the
charger does not turn off as long as a valid
input power source is attached.
Charger Status
STAT1
STAT2
Charging
Low
End of Charge
Low
High
Charge Suspended (due
to Battery supplement
mode or NTC out of
range)
High
Low
Fault/Disable (due
to
time-out,
internal
thermal
shutdown),
EN>2V, or no VIN
High
NTC Temperature Sensor
The NTC pin allows MP2607 to sense the
ambient
temperature
using
the
Negative
Thermal Coefficient (NTC) thermistor usually
available in the battery pack to ensure a safe
operating environment of the battery. A resistor
with appropriate value should be connected
from VIN to NTC and the NTC resistor parallel
connected a regular resistor is connected form
NTC pin to ground. The voltage on NTC pin is
determined by the resistor divider whose divide
ratio depends on the ambient temperature.
MP2607 internally sets a pre-determined upper
and lower bound of the divide ratio. If NTC pin
voltage falls out of this range which means the
temperature is outside the safe operating range,
MP2607 will stop charging and report it on
status pins. Charging will automatically resume
after the temperature falls back into the safe
range.
Enable
Enable of MP2607 is controlled by pulling CEB
pin below 0.3V. Pulling CEB pin above 2V will
put MP2607 in sleep mode, which disables
power path management and battery charger.
In sleep mode, the N-channel switch between
BATT and SYS is fully on to maintain system
supply. Battery under-voltage and current limit
are kept alive to provide safeguard.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MP2607DL-LF-P | 功能描述:电池管理 Li-ion charger with power path mgt 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 |
| MP2607DL-LF-Z | 功能描述:电池管理 Li-ion charger with power path mgt 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 |
| MP26085DJ-LF-P | 制造商:Monolithic Power Systems 功能描述:CC/CV CONTROLLER - Tape and Reel |
| MP26085DJ-LF-Z | 制造商:Monolithic Power Systems 功能描述:CC/CV CONTROLLER - Tape and Reel |
| MP2608DQ-LF-P | 功能描述:电池管理 28V 1A 2-In Linear Batt Chrgr w/timer 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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