参数资料
| 型号： | ISL6292BCRZ |
| 厂商： | Intersil |
| 文件页数： | 8/12页 |
| 文件大小： | 0K |
| 描述： | IC CHARGER LI-ION 4.2V 4X4 16QFN |
| 标准包装： | 75 |
| 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： | 4.3 V ~ 6.5 V |
| 工作温度： | -20°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-VQFN 裸露焊盘 |
| 供应商设备封装： | 16-QFN-EP（4x4） |
| 包装： | 管件 |
| 产品目录页面： | 1244 (CN2011-ZH PDF) |
ISL6292B
Applications Information
Power-On Reset (POR)
The ISL6292B has a 3.4V rising POR threshold. Before the
EOC Current and R IMIN Selection
The EOC current is programmed by the IMIN pin and can be
calculated by the following equation:
I MIN = ---------------- × 10 ( A )
input voltage reaches the POR threshold, the 2.9V V2P9 pin
outputs 0V and the charger is disabled. Once the POR
0.8V 4
R IMIN
(EQ. 3)
T OSC = 0.2 ? 10 ? C TIME
( sec onds )
threshold is reached, the V2P9 pin outputs 2.9V, the open-
drain MOSFET on the DT pin is turned on, and the ambient
temperature monitoring circuit starts to function. After a
delay and after the input voltage rises above the battery
voltage, the charger control circuit starts to work and the DT
pin impedance becomes high. Figure 3 shows the sequence
of the events at power on. The POR has a falling threshold
of 2.4V typically. At power on, all counters are reset to zero.
Charge Current and R IREF Selection
When the ISL6292B is used as a traditional linear charger,
the R IREF sets the constant charge current. The trickle
charge current is 10% of the CC current I REF . When working
with a current-limited supply, the CC current is determined
by the supply limited current I LIM . I REF needs to be
programmed higher than I LIM and is used as an overcurrent
protection. Taking into account the tolerance of both the I LIM
and I REF , it is recommended the I REF be programmed at
least 30% higher than the I LIM . I REF can be found by the
following equation:
The EOC current has a programming range up to 400mA.
To qualify as an EOC condition, the charge current needs to
drop below the I MIN level and stay below the IMIN level for
more than three to four cycles of the internal oscillator;
additionally, the battery voltage rises above the recharge
threshold given in the Electrical Specification table.
Internal Oscillator
The internal oscillator establishes a timing reference. The
oscillation period is programmable with an external timing
capacitor, C TIME , as shown in Typical Applications. The
oscillator charges the timing capacitor to 1.5V and then
discharges it to 0.5V in one period, both with 10 μ A current.
The period T OSC is:
6
(EQ. 4)
A 1nF capacitor results in a 0.2ms oscillation period. The
accuracy of the period is mainly dependent on the accuracy
of the capacitance and the internal current source.
I REF = ----------------- × 10 ( A )
0.8V 5
R IREF
The trickle charge current is 10% of IREF, that is,
(EQ. 1)
Total Charge Time and C TIME Selection
The total charge time for the CC mode and CV mode is
limited to a length of TIMEOUT, which can be found by:
I Trickle = ----------------- × 10 ( A )
C TIME
TIMEOUT = 14 ? ------------------
0.8V 4
R IREF
(EQ. 2)
1nF
( minutes )
(EQ. 5)
The ISL6292B has a comparator with 100mV offset voltage
to ensure the input voltage is higher than the battery voltage
before charging starts (see the Block Diagram). This
condition requires I LIM be higher than 400mA. The upper
limit for I LIM is 1.5A.
VIN
POR
Th re sh o ld
V2P9
DT
Ch arg e
Cycle
Ch arg e
Cycle
VIN
POR
Imp e d .
RED
M IN
V2P9
GRN
15 Cycle s to
1/8 TIM EOUT
DT
Imped
Charger
Start
VBAT
I CHG
V RECHRG
2.8V V M IN
I M IN
15
Cycle s
t0
t1 t2 t3
t4
t5
t6 t7
t8
FIGURE 3. EVENT SEQUENCE AT POWER UP
8
FIGURE 4. OPERATION WAVEFORMS
FN9139 .1
April 19, 2005
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相关代理商/技术参数 |
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| ISL6292BCRZ-T | 功能描述:IC CHARGER LI-ION POLYMER 16-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 功能:电池监控器 电池化学:碱性，锂离子，镍镉，镍金属氢化物 电源电压:1 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-6 供应商设备封装:SOT-6 包装:带卷 (TR) |
| ISL6292C | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Li-ion/Li Polymer Battery Charger |
| ISL6292CCR3Z | 功能描述:电池管理 VSENSE BONDED OUT 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 |
| ISL6292CCR3Z-T | 功能描述:IC CHARGER LI-ION POLYMER 10-DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 标准包装:1 系列:- 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:3.75 V ~ 6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SC-74A，SOT-753 供应商设备封装:SOT-23-5 包装:剪切带 (CT) 产品目录页面:669 (CN2011-ZH PDF) 其它名称:MCP73831T-2ACI/OTCT |
| ISL6292D | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Li-ion/Li Polymer Battery Charger |
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