- 您现在的位置：买卖IC网 > PDF目录98050 > PC13892AJVL (FREESCALE SEMICONDUCTOR INC) 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PBGA186 PDF资料下载
参数资料
| 型号： | PC13892AJVL |
| 厂商： | FREESCALE SEMICONDUCTOR INC |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PBGA186 |
| 封装： | 12 X 12 MM, 0.80 MM PITCH, ROHS COMPLIANT, PLASTIC, MABGA-186 |
| 文件页数： | 49/67页 |
| 文件大小： | 2571K |
| 代理商： | PC13892AJVL |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页当前第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页
Analog Integrated Circuit Device Data
Freescale Semiconductor
53
13892
FUNCTIONAL DEVICE OPERATION
Because of an order from the United States International Trade Commission, BGA-packaged product lines and part numbers indicated here currently are not
available from Freescale for import or sale in the United States prior to September 2010: MC13892*VK and MC13892*VL in 139, 186 MAPBGA packages.
By default, the battery thermistor value is taken into
account for charging the battery
CHARGE LED INDICATOR
Since normal LED control via the SPI bus is not always
possible in the standalone operation, a current sink is
provided at the CHRGLED pin. The driver at CHRGLED
serves as the trickle (sign of life) LED and will be activated
when standalone charging is started, and will remain on also
when the device is powered on, until the charger is
programmed by SPI.
MODES OF OPERATION
REVERSE SUPPLY MODE
The battery voltage can be applied to an external
accessory via the charge path. The path is only established if
the normal charge path is disabled. The turn on of M1 and M2
is intentionally slow. The current through the accessory
supply path is monitored via the charge path sense resistor
R2. It can be read out via the ADC. The accessory supply
path is disabled and an interrupt CHGSHORTI is generated
when the slow threshold or the fast threshold is crossed. The
reverse path is disabled when a current reversal occurs, and
an interrupt CHREVI is generated. This function operates up
to 40°C.
STANDALONE CHARGING
A standalone charge mode of operation is provided to
minimize software interaction. It also allows that a completely
discharged battery can be revived without processor control.
This is especially important when charging from a USB host
or when the optional transistor M3 is not placed.
SOFTWARE CONTROLLED CHARGING
The charger can also be operated under software control.
In this mode, full control of the charger settings is assumed
by software; the state machine will no longer determine the
mode of charging.
FACTORY MODE
In factory mode, power is provided to the application with
no battery present. It is not a situation which should occur in
the field. The factory mode is differentiated from a USB Host
by, in addition to a valid VBUS, a UID being pulled high to
VBUS level during the attach, See Connectivity (USB
USB LOW POWER BOOT
USB low power boot allows the application to boot with a
dead battery within the 100 mA USB budget, until the
processor has negotiated for the full current capability. This
mode expedites the charging of the dead battery and allows
the software to bring up the LCD display screen with the
message “Charging battery”.
Notes:
When using the battery charger as the only source of
power, as in a battery-less application, the following
precautions should be observed:
It is still necessary to connect ADIN5 to either VCOREDIG
or a midpoint of a divider from GPIO1 to ground since the
battery charger will still interpret this voltage as the battery
pack thermistor by default.
Very careful budgeting of the total current consumption
and voltage standoff from CHRGRAW to BPSNS must be
made, since the power limiter is operational by default, and a
battery less system won't have a source of current if the
power dissipation limit is reached.
If operating from a USB host the unit load limit (100 mA
max.) must still be observed.
If operating from a “wall charger”, and if there is no battery,
there is an period of approximately 85 ms after RESETB is
released, but before the current limit is set to a nominal 560
mA. If the total current demand is greater than this limit, the
voltage may collapse and RESETB may pulse a few times
(depending in part in the system load and dependence on
RESETB.) Therefore, at the end of this time, RESETB may or
may not be active. It may be necessary to use one of the
other turn on events (such as PWRONx) to turn the 13892
back on.
PROTECTION FUNCTIONS
OVER-VOLTAGE PROTECTION
In order to protect the application, the voltage at the
CHRGRAW pin is monitored. When crossing the threshold
(16 V high to low and low to high), the charge path regulator
will be turned off by opening the mosfets connected to pins
CHRGCTRL1 and CHRGCTRL2. An interrupt CHGFAULTI
is generated with the associated CHGFAULTM mask bit. In
order to ensure immediate protection, the control of M1, M2,
and M3 occurs in real time.
The UVBUS pin is also protected against over-voltages.
This will occur at much lower levels then for CHRGRAW.
When a VBUS over-voltage is detected the internal circuitry
of the USB block is disconnected. An USBOVI is generated
in this case.
When the maximum voltage of the IC is exceeded,
damage will occur to the IC, and the state of the mosfets
connected to pins CHRGCTRL1 and CHRGCTRL2 cannot
be guaranteed. If one wants to protect against these failure
conditions, additional protection will be required. The same is
valid for charger polarity inversion protection.
OVER-POWER DISSIPATION PROTECTION
Since the charge path operates in a linear fashion, the
dissipation can be significant and care must be taken to
ensure that the external pass FETs M1 and M2 are not over
dissipating when charging. By default, the charge system will
protect against this by a built in power limitation circuit.This
circuit will monitor the voltage drop between CHRGRAW and
相关PDF资料 |
PDF描述 |
|---|---|
| PC13892BJVK | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PBGA139 |
| PC13892AJVK | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PBGA139 |
| PC13892BJVL | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PBGA186 |
| PC13892BJVLR2 | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PBGA186 |
| PC14568ED/R2 | SPECIALTY ANALOG CIRCUIT, PDIP16 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| PC13892AJVLR2 | 制造商:Freescale Semiconductor 功能描述:5/28V BCK/BST PMUIC - Tape and Reel |
| PC13892BJVL | 制造商:Freescale Semiconductor 功能描述:5/28V BCK/BST PMUIC - Trays |
| PC13892JVK | 制造商:Freescale Semiconductor 功能描述:POWER MGMT IC - Bulk |
| PC13892JVK/R2 | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:Power Management and User Interface IC |
| PC13892JVKR2 | 制造商:Freescale Semiconductor 功能描述:POWER MGMT IC - Tape and Reel |
发布紧急采购，3分钟左右您将得到回复。