- 您现在的位置：买卖IC网 > PDF目录15531 > PS700-I/ST (Microchip Technology)IC BATTERY MONITOR LI-ION 8TSSOP PDF资料下载
参数资料
| 型号： | PS700-I/ST |
| 厂商： | Microchip Technology |
| 文件页数： | 9/38页 |
| 文件大小： | 0K |
| 描述： | IC BATTERY MONITOR LI-ION 8TSSOP |
| 标准包装： | 100 |
| 功能： | 电池监控器 |
| 电池化学： | 锂离子（Li-Ion） |
| 电源电压： | 2.7 V ~ 9 V |
| 工作温度： | -20°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 8-TSSOP |
| 包装： | 管件 |
第1页第2页第3页第4页第5页第6页第7页第8页当前第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
PS700
3.2.3
SAMPLE-SLEEP MODE
3.2.4
SHELF-SLEEP MODE
In Sample-Sleep mode, the PS700 goes into the Sleep
state and wakes up at user-programmed intervals to
perform a set of conversions as programmed for the
A/D cycle. The purpose of Sample-Sleep is to achieve
the minimum power consumption possible while
periodically measuring specified parameters.
While the PS700 is in the Sleep portion of Sample-
Sleep interval, all of the analog circuitry is shut off. The
Sleep interval time is driven by an independent low-
power on-chip RC oscillator that is separate from the
primary oscillator. The Sleep oscillator consumes much
less power than the primary oscillator, but is less
accurate. While in Sample-Sleep mode, the device
consumes average current in the range of 20 μ A.
During the active portion of Sample-Sleep mode, a
single set of conversions is performed and a Run mode
current in the range of 85 μ A will be consumed for the
duration of the measurements.
Sample-Sleep mode is invoked by one of the following
actions:
Shelf-Sleep mode is the lowest power mode and is
intended to preserve battery capacity when the battery
pack is shipped or stored or if the battery voltage drops
below a specified threshold. While in Shelf-Sleep
mode, no measurements occur, no accumulation is
performed and no SMBus communications are
recognized. In addition, volatile memory is not
maintained.
Entry to Shelf-Sleep mode is enabled by programming
the “SHent” bit = 1 or if V PACK is less than VPtrip. The
Shelf-Sleep mode will then be entered when the
SMBus pins (both SDA and SCL) drop from a high to a
low level for a minimum time period specified by t SHELF .
This action will also occur if the battery pack is
physically disconnected from the system.
Exit from the Shelf-Sleep mode back to Run mode will
occur when the SMBus pins (both SDA and SCL) are
both pulled from a low to high condition and remain
high for a minimum time of t WAKE , signifying system
activity or the connection of the pack to the host.
1.
Cell voltage on VC1 or VC2 drops below the trip
point programmed in the VCtrip register with the
3.3
General Purpose Input/Outputs
corresponding “VC1ent” or “VC2ent” bit set in
the TRIPctrl register. This action can be used to
prevent excessive battery discharge in the event
of a dangerously low cell voltage. Be aware that
Sample-Sleep will not be entered if the “lex” bit
is set, enabling wake-up based on charge
current and the measured current is above the
threshold set in the I+trip register.
The NTC and VC2 pins have alternate functions of
general purpose I/O; IO0 and IO1, respectively. These
pins can be configured as digital general purpose
inputs/outputs if their normal application functions of
temperature and cell monitoring are not needed. Their
configuration is controlled in the GPIOctrl register.
The IO0 (NTC) pin may be configured as a push-pull
2.
3.
Setting the SSLP bit in the OpMode register.
The host can take this action when the system is
entering a low-power standby condition and it is
desired to periodically measure and accumulate
current, voltage, or temperature.
Current less than the I-trip register value when
“Ient” bit is set in the TRIPctrl register.
output, an open-drain driver with internal pull-up, or as
a tri-stated pin. When configured as a push-pull or
open-drain output, the output high voltage is the 3.0V
internally regulated supply. When the output function is
disabled, an external circuit may drive the pin as an
input with a voltage range of 0-3.0V. The input function
may be used whether or not the pin is driven by the
PS700. In addition, the input function may be disabled,
The Sample-Sleep interval is determined by the
programming of the “Sampdiv” bits within the A/D Con-
figuration register, together with the “SSLPdiv” bits
within the OpMode register. The sample interval is
2**(Sampdiv) * 2**(SSLPdiv) * 0.5 sec. The possible
Sample-Sleep interval time, therefore, ranges from a
minimum of 0.5 sec to over 136 minutes.
Exit from Sample-Sleep mode to Run mode can be
in which case the input buffer is powered down,
preventing current drain if the NTC pin rests at an
intermediate level.
The IO1 (VC2) pin is similar to that of NTC except it is
an open-drain output only. IO1 has no explicit output
enable control; therefore, if the output is set to a logic
‘ 1 ’, the internal pull-down is turned off which tri-states
the pin. The input function is the same as IO0.
accomplished by clearing the “SSLP” bit or by program-
ming a wake-up based on pack voltage or current.
Wake-up based on charge current will occur when the
“Iex” bit is set in the TRIPctrl register and the charging
current value is above the threshold programmed in the
I+trip register. Wake-up based on pack voltage will
occur when the “VPex” bit is set in the TRIPctrl register
and the pack voltage rises above the threshold
programmed in the SStrip register.
? 2004 Microchip Technology Inc.
Note:
If the IO0 and/or IO1 pins are being used
for their analog functions, their respective
GPIO output and input functions must be
disabled. The GPIO function may be
totally disabled by clearing the appropriate
GPIOctrl bit.
DS21760F-page 9
相关PDF资料 |
PDF描述 |
|---|---|
| PS501-I/SS | IC FIELD REPROG BATT MGR 28SSOP |
| 101-1327 | KIT DEV STANDARD RCM6700 |
| PS7051 | IC BATTERY MONITOR ONE CELL PROT |
| V110C8C75BG2 | CONVERTER MOD DC/DC 8V 75W |
| V110C8C75BG | CONVERTER MOD DC/DC 8V 75W |
相关代理商/技术参数 |
参数描述 |
|---|---|
| PS700T | 功能描述:电池管理 SMBus 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 |
| PS700T-I/ST | 功能描述:IC BATT MONITOR 1-2CELL 8TSSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 产品变化通告:BQ77908, BQ77910 Discontinuation 20/Mar/2012 标准包装:1 系列:- 功能:电池监控器，过压/欠压保护 电池化学:锂离子（Li-Ion）、锂聚合物（Li-Pol） 电源电压:5.6 V ~ 35 V 工作温度:-25°C ~ 85°C 安装类型:表面贴装 封装/外壳:38-TFSOP（0.173"，4.40mm 宽） 供应商设备封装:38-TSSOP 包装:剪切带 (CT) 其它名称:296-28784-1 |
| PS-7-01 | 功能描述:PUSH SPACER NATURAL 7/16" RoHS:是 类别:硬件，紧固件，配件 >> 电路板支座 系列:PS 标准包装:1,000 系列:REHCBS 保持类型:卡入式锁定 长度:1.590"（40.39mm） 板间高度:1.250"（31.75mm）1 1/4" 安装类型:铆钉 材质:尼龙 支撑孔直径:0.158"（4.00mm） 支撑面板厚度:0.070"（1.78mm） 安装孔直径:0.187"（4.75mm）3/16" 安装面板厚度:0.047 ~ 0.105"（1.20 ~ 2.67mm） 其它名称:61063012REHCBS2001 |
| PS-7012 | 制造商:Johnson Electric / Parlex Corporation 功能描述: |
| PS-7015 | 制造商:Johnson Electric / Parlex Corporation 功能描述: |
发布紧急采购，3分钟左右您将得到回复。