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參數(shù)資料
| 型號(hào)： | ISL9203CRZ |
| 廠商： | INTERSIL CORP |
| 元件分類： | 電源管理 |
| 英文描述： | Li-ion/Li Polymer Battery Charger |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO10 |
| 封裝： | LEAD FREE, 3 X 3 MM, PLASTIC, DFN-10 |
| 文件頁(yè)數(shù)： | 12/16頁(yè) |
| 文件大?。?/td> | 526K |
| 代理商： | ISL9203CRZ |
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12
FN6106.0
February 3, 2005
Recharge
After a charge cycle completes, charging is prohibited until
the battery voltage drops to a recharge threshold, V
RECHRG
(see Electrical Specifications). Then a new charge cycle
starts at point t
6
and ends at point t
8
, as shown in Figure 20.
The safety timer is reset at t
6
.
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:
(EQ. 3)
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.
Total Charge Time
The total charge time for the CC mode and CV mode is
limited to a length of TIMEOUT. A 22-stage binary counter
increments each oscillation period of the internal oscillator to
set the TIMEOUT. The TIMEOUT can be calculated as:
(EQ. 4)
or
(EQ. 5)
A 1nF capacitor leads to 14 minutes of TIMEOUT. For
example, a 15nF capacitor sets the TIMEOUT to be 3.5
hours. The charger has to reach the end-of-charge condition
before the TIMEOUT, otherwise, a TIMEOUT fault is issued.
The TIMEOUT fault latches up the charger. There are two
ways to release such a latch-up: either to recycle the input
power, or toggle the EN pin to disable the charger and then
enable it again.
The trickle mode charge has a time limit of 1/8 TIMEOUT. If
the battery voltage does not reach V
MIN
within this limit, a
TIMEOUT fault is issued and the charger latches up. The
charger stays in trickle mode for at least 15 cycles of the
internal oscillator and, at most, 1/8 of TIMEOUT, as shown in
Figure 20.
Charge Current Programming
The charge current in the CC mode is programmed by the
IREF pin. The voltage of IREF is regulated to a 0.8V
reference voltage. The charging current during the constant
current mode is 100,000 times that of the current in the
R
IREF
resistor. Hence, the charge current is,
(EQ. 6)
Table 1 shows the charge current vs. selected R
IREF
values.
The typical trickle charge current is 10% of the programmed
constant charge current. Table 2 shows the trickle charge
current tolerance guidance at given R
IREF
values, when the
battery voltage is between 0V to 2.5V. Use this guidance
only for mass production tests in customer’s products.
The ISL9203 is designed to be safe when the IREF pin is
accidentally short-circuited to an external source or to
ground. If the IREF pin is driven by an external source to
below 0.38V or above 1.5V for any reason, the charger is
disabled and the FAULT pin turns to LOW to indicate a fault
T
OSC
0.2 10
6
C
TIME
=
onds
sec
(
)
TIMEOUT
2
22
T
OSC
=
TIMEOUT
14
C
-----------------
=
minutes
(
)
TABLE 1. CHARGE CURRENT vs R
IREF
VALUES.
R
IREF
(k
)
CHARGE CURRENT (mA)
MIN
TYP
MAX
267 ~ 160
17% lower than
TYP Value
= I
REF
in EQ. 5
17% higher than
TYP Value
160
450
500
550
100
720
800
880
88.9
810
900
990
80
900
1000
1100
TABLE 2. TRICKLE CHARGE CURRENT vs R
IREF
VALUES.
R
IREF
(k
)
TRICKLE CHARGE CURRENT (mA)
MIN
TYP
MAX
267
15
30
60
160
30
50
80
100
40
80
120
88.9
45
90
135
80
70
100
150
TABLE 3. EOC CURRENT vs R
IREF
VALUES.
R
IREF
(k
)
EOC CURRENT (mA)
MIN
TYP
MAX
267
15
30
60
160
20
50
80
100
40
80
120
88.9
45
90
135
80
70
100
150
I
REF
IREF
-----------------
10
5
×
A
( )
=
ISL9203
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| ISL9205BIRZ | Li-ion Battery Charger |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ISL9203CRZR5220 | 功能描述:IC BATT CHARGER LI-ION 10-DFN RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標(biāo)準(zhǔn)包裝:2,000 系列:Impedance Track™ 功能:燃料，電量檢測(cè)計(jì)/監(jiān)控器 電池化學(xué):鋰離子（Li-Ion） 電源電壓:2.4 V ~ 2.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:20-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:20-TSSOP 包裝:帶卷 (TR) 產(chǎn)品目錄頁(yè)面:1020 (CN2011-ZH PDF) 配用:BQ27350EVM-ND - BQ27350EVM 其它名稱:296-21665-2 |
| ISL9203CRZ-T | 制造商:Intersil 功能描述:Li-ion/Li Polymer Battery Charger |
| ISL9203CRZ-TR5220 | 功能描述:IC BATT CHARGER LI-ION 10-DFN RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 功能:電池監(jiān)控器 電池化學(xué):堿性，鋰離子，鎳鎘，鎳金屬氫化物 電源電壓:1 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 供應(yīng)商設(shè)備封裝:SOT-6 包裝:帶卷 (TR) |
| ISL9203R5220 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Li-ion/Li Polymer Battery Charger |
| ISL9203R5220_06 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Li-ion/Li Polymer Battery Charger |
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