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參數(shù)資料
| 型號(hào)： | ISL6292DCR4-T |
| 廠(chǎng)商： | INTERSIL CORP |
| 元件分類(lèi)： | 電源管理 |
| 英文描述： | Li-ion/Li Polymer Battery Charger |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC16 |
| 封裝： | 4 X 4 MM, PLASTIC, MO-220-VGGC, QFN-16 |
| 文件頁(yè)數(shù)： | 11/13頁(yè) |
| 文件大?。?/td> | 461K |
| 代理商： | ISL6292DCR4-T |
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11
As the TEMP pin voltage rises from low and exceeds the
1.5V threshold (when the V2P8 pin is forced with a 3V bias),
the under temperature signal rises and does not clear until
the TEMP pin voltage falls below the 1.286V falling
threshold. Similarly, the over-temperature signal is given
when the TEMP pin voltage falls below the 0.605V threshold
and does not clear until the voltage rises above 0.66V. The
actual accuracy of the 3V bias is
not important
because all
the thresholds and the TEMP pin voltage are ratios
determined by the resistor dividers, as shown in Figure 7.
The NTC thermistor is required to have a resistance ratio of
3.96:1 at the low and the high temperature limits, that is,
(EQ. 7)
This is because at the low temperature limit, the TEMP pin
voltage is 1.5V, which is 1/2 of the 3V bias. Thus,
(EQ. 8)
where R
U
is the pull-up resistor as shown in Figure 7. On the
other hand, at the high temperature limit the TEMP pin
voltage is 0.605V, 20.17% of the 3V bias. Therefore,
(EQ. 9)
For applications that do not need to monitor the battery
temperature, the NTC thermistor can be replaced with a
regular resistor of a half value of the pull up resistor R
U
.
Another option is to connect the TEMP pin to the IREF pin
that has a 0.8V output. With such connection, the IREF pin
can no longer be programmed with logic inputs.
Battery Removal Detection
The ISL6292D assumes that the thermistor is co-packed
with the battery and is removed together with the battery.
When the charger senses a TEMP pin voltage that is 2.1V or
higher, it assumes that the battery is removed. The battery
removal detection circuit is also shown in Figure 7. When a
battery is removed, the charger is stopped. When a battery
is inserted again, a new charge cycle starts.
Indications
The ISL6292D has three indication pins: V2P8, STAT1, and
STAT2. The input presence is indicated by the V2P8 pin.
Figure 8 shows the V2P8 pin voltage vs. the input voltage.
The equivalent circuit for the STAT1 and STAT2 pins are
shown in Figure 9. Both pins have ESD diodes to clamp the
pin voltage between ground and the input, as shown in the
Block Diagram. The STATUS block outputs a logic HIGH
when the charger is charging and a LOW whenever the
charger is not charging. When a fault case happens, the
charger stops charging, therefore, the STATUS block outputs
LOW. Depending on fault cause, either the eighth or the
ninth D-type flip-flop output is gated to the STAT1 pin. Both
flip-flop outputs are 50% duty ratio blinking signals. The
periods of the eighth and ninth flip-flop output are calculated
by the following equations:
(EQ. 10)
(EQ. 11)
Table 1 and 2 summarize the LED indication driven by
STAT1 and STAT2 respectively.
R
HOT
-------------------
3.96
=
R
COLD
R
U
=
R
U
---------------
---–
=
FIGURE 8. THE V2P8 PIN OUTPUT vs THE INPUT VOLTAGE
AT THE VIN PIN. VERTICAL: 1V/DIV,
HORIZONTAL: 100ms/DIV
3.4V
2.4V
2.8V
V
IN
V2P8
FIGURE 9. EQUIVALENT CIRCUIT FOR THE STAT1/STAT2
INDICATION PINS AND KEY OPERATING
WAVEFORMS
OSC
DFF1
DFF9
DFF8
STAT1
STAT2
TIME
C
TIME
STATUS
Temp
Fault
TIMEOUT
Fault
(A)
(B)
TIME
OSC
Output
DFF1
Output
DFF8
Output
DFF9
Output
T
8th
2
8
T
OSC
256 T
OSC
=
=
T
9th
2
9
T
OSC
512 T
OSC
=
=
ISL6292D
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ISL6292DCRZ | 功能描述:電池管理 LINEAR SINGLE CELL LI-ION CHRGR 16LD RoHS:否 制造商:Texas Instruments 電池類(lèi)型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| ISL6292DCRZ-T | 功能描述:電池管理 LINEAR SINGLE CELL LI-ION CHRGR 16LD RoHS:否 制造商:Texas Instruments 電池類(lèi)型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| ISL6292EVAL1 | 功能描述:EVALUATION BOARD 1 ISL6292 RoHS:否 類(lèi)別:編程器，開(kāi)發(fā)系統(tǒng) >> 過(guò)時(shí)/停產(chǎn)零件編號(hào) 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 傳感器類(lèi)型:CMOS 成像，彩色（RGB） 傳感范圍:WVGA 接口:I²C 靈敏度:60 fps 電源電壓:5.7 V ~ 6.3 V 嵌入式:否 已供物品:成像器板 已用 IC / 零件:KAC-00401 相關(guān)產(chǎn)品:4H2099-ND - SENSOR IMAGE WVGA COLOR 48-PQFP4H2094-ND - SENSOR IMAGE WVGA MONO 48-PQFP |
| ISL6292EVAL1Z | 功能描述:EVAL BOARD 1 FOR ISL6292 RoHS:是 類(lèi)別:編程器，開(kāi)發(fā)系統(tǒng) >> 評(píng)估演示板和套件 系列:* 標(biāo)準(zhǔn)包裝:1 系列:PCI Express® (PCIe) 主要目的:接口，收發(fā)器，PCI Express 嵌入式:- 已用 IC / 零件:DS80PCI800 主要屬性:- 次要屬性:- 已供物品:板 |
| ISL6292EVAL2 | 功能描述:EVALUATION BOARD 2 ISL6292 RoHS:否 類(lèi)別:編程器，開(kāi)發(fā)系統(tǒng) >> 評(píng)估演示板和套件 系列:- 標(biāo)準(zhǔn)包裝:1 系列:PCI Express® (PCIe) 主要目的:接口，收發(fā)器，PCI Express 嵌入式:- 已用 IC / 零件:DS80PCI800 主要屬性:- 次要屬性:- 已供物品:板 |
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