- 您現在的位置：買賣IC網 > PDF目錄384532 > ISL9205AIRZ-T (INTERSIL CORP) Li-ion Battery Charger PDF資料下載
參數資料
| 型號： | ISL9205AIRZ-T |
| 廠商： | INTERSIL CORP |
| 元件分類： | 電源管理 |
| 英文描述： | Li-ion Battery Charger |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO10 |
| 封裝： | 3 X 3 MM, ROHS COMPLIANT, PLASTIC, DFN-10 |
| 文件頁數： | 10/13頁 |
| 文件大?。?/td> | 263K |
| 代理商： | ISL9205AIRZ-T |
10
FN9252.0
March 20, 2007
Charge Termination and Recharge
As the charge current reaches the EOC (end-of-charge)
current threshold during the constant voltage phase, the
STATUS pin open-drain FET is turned off to indicate an EOC
condition. The EOC current is fixed at 10% of the
programmed constant charge current. If the timeout function
is available (ISL9205B, ISL9205C and ISL9205D), the
charger will be terminated when the user programmed
charge time limit has been reached. If the timeout function is
not available (ISL9205A), the charger will continue to charge
until the EN pin is pulled to logic LOW or the input power has
been removed. Should the charge is terminated by the
timeout function, recharge will occur when the battery
voltage falls to 150mV below the constant voltage value. The
STATUS open-drain FET is turned on when a recharge
condition is met, whether the charger is previously
terminated or not. An internal delay is implemented at the
STATUS pin for both EOC and recharge conditions to
prevent nuisance trips due to noise and fast load current
transitions. The delay time is approximately one clock cycle
(varies between 0.5 and 1.5 clock) of the internal oscillator,
which is programmed by the timer capacitor. The typical
charge waveforms in Figure 13 show the complete cycle
operation.
FIGURE 13. TYPICAL CHARGE CYCLE WITH TIMEOUT
Temperature Monitoring and Thermal Foldback
In the event where the die temperature reaches the thermal
foldback threshold (+110°C typical), the charge current is
reduced accordingly to prevent further temperature rise. In
the ISL9205D, there is an external temperature monitoring
function. A negative temperature coefficient (NTC)
thermistor can be connected between the TEMP pin and
GND to monitor the battery temperature or ambient
temperature. The hysteresis comparators internal to the
ISL9205 provide a valid temperature window centered at the
voltage of the TEMP pin, which is programmed by the NTC
and the pull-up resistor connected to the pin. When the
measured temperature is outside this window, the charger is
paused (both the charger and the timer are stopped) and a
fault indication is issued. If the thermistor is attached to the
battery, the TEMP function can be used to discover a battery
removal condition when the TEMP pin voltage is much
higher than the reference threshold.
POR
The power-on reset (POR) function monitors the supply
voltage. The POR has a rising edge threshold of 3.6V typical
and 2.5V typical for falling edge. The charger is expected to
operate when the input voltage is above the POR threshold.
After POR the charger will continue to operate for supply
voltage down to 2.5V typical. It is also required that the
supply voltage be higher than the VBAT pin voltage by a
typical 80mV for the charger to function.
Oscillator, TIMEOUT and Charge Cycle
The ISL9205 incorporates with an oscillation circuit using an
external timing capacitor connected to the TIME pin. The
oscillator sets the limit for the maximum charge time during
the trickle mode and the fast mode (CC and CV). The
maximum charge time (TIMEOUT) for the fast mode is set
by:
2
22
=
t
OSC
where the t
OSC
is the oscillator period. The minimum
programmable t
OSC
is 20
μ
S (C
TIME
= 100pF). The time limit
for the trickle charge is 1/8 of the fast mode time limit. For
the ISL9205A, there is no time-out function and hence the
charger will never be turned off after the EOC but will
indicate the EOC condition through the STATUS pin.
A charge cycle is the time interval between the time when
the charger is enabled to the moment it is disabled. If the
battery voltage is lower than the trickle charge threshold at
the time the charger is enabled, the charger enters the trickle
mode and the timer is reset and its limit is set to 1/8 of
TIMEOUT. For ISL9205B, ISL9205C and ISL9205D, the
charger will stop and indicate a TIMEOUT fault if the charge
time is longer than the limit. If the trickle mode completes
successfully before the time limit, the charger moves to CC
mode and the timer is reset and the time limit is set to
TIMEOUT. The charger needs to reach the EOC conditions
before the TIMEOUT interval elapsed, otherwise, a
TIMEOUT fault will be issued. The charger indicates the
EOC with the STATUS pin but does not terminate until the
TIMEOUT interval elapsed.
Indications
The ISL9205 has two open-drain status indication pins.
These two pins are FAULT and STATUS. These pins require
an external pull-up resistor to function properly. The V2P8
pin can be used as the presence of AC adapter.
Charger Disable
The EN pin allows the user to disable the charger. When the
charger is disabled, all internal circuits are shut down and
the quiescent current at the input pin is less than a typical
value of 150mA.
IREF
TRICKLE
CC
CV
I
MIN
4.2V
TIME
2.8V
CHG
CHARGE
CURRENT
CHARGE
VOLTAGE
STATUS
INDICATION
V
REC
10%
IREF
TIMEOUT
1/8 OF
TIMEOUT
TIMEOUT
(EQ. 1)
ISL9205
相關PDF資料 |
PDF描述 |
|---|---|
| ISL9206DHZ-T | FlexiHash+ For Battery Authentication |
| ISL9206 | FlexiHash+ For Battery Authentication |
| ISL9206_07 | FlexiHash+ For Battery Authentication |
| ISL9206DRZ-T | FlexiHash+ For Battery Authentication |
| ISL9206EVAL1 | FlexiHash For Battery Authentication |
相關代理商/技術參數 |
參數描述 |
|---|---|
| ISL9205BEVAL1Z | 制造商:Intersil Corporation 功能描述:ISL9205B EVAL BOARD 1 - ROHS COMPLIANT - DFN - Bulk |
| ISL9205BIRZ | 功能描述:IC CHRGR LI-ION SGL 4.2V 10-DFN RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 功能:電池監(jiān)控器 電池化學: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 供應商設備封裝:SOT-6 包裝:帶卷 (TR) |
| ISL9205BIRZ-T | 功能描述:IC CHRGR LI-ION SGL 4.2V 10-DFN RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 功能:電池監(jiān)控器 電池化學: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 供應商設備封裝:SOT-6 包裝:帶卷 (TR) |
| ISL9205CEVAL1Z | 制造商:Intersil Corporation 功能描述:ISL9205C EVAL BOARD 1 - ROHS COMPLIANT - DFN - Bulk |
| ISL9205CIRZ | 功能描述:IC CHRGR LI-ION SGL 4.25V 10-DFN RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 功能:電池監(jiān)控器 電池化學: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 供應商設備封裝:SOT-6 包裝:帶卷 (TR) |
發(fā)布緊急采購，3分鐘左右您將得到回復。