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參數(shù)資料
| 型號(hào)： | LTC1759CG |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Smart Battery Charger |
| 中文描述： | 0.2 A BATTERY CHARGE CONTROLLER, 230 kHz SWITCHING FREQ-MAX, PDSO36 |
| 封裝： | 0.209 INCH, PLASTIC, SSOP-36 |
| 文件頁(yè)數(shù)： | 20/28頁(yè) |
| 文件大?。?/td> | 362K |
| 代理商： | LTC1759CG |
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20
LTC1759
OPERATIOU
When AC power is not available the thermistor block
supports the following low power operating features:
1. Only the low power THERM_OR detection circuitry is
kept alive to support battery present interrupts.
2. The ChargeStatus() read function forces the thermistor
block to update thermistor status at the beginning of the
read. The low power mode is immediately reentered
upon completion of the read.
The thermistor impedance is interpreted according to
Table 4.
Table 4. Thermistor State Ranges
THERMISTOR
RESISTANCE
0
to 500
CHARGE
STATUS BITS
THERM_UR,
THERM_HOT
BATTERY_PRESENT
THERM_HOT
BATTERY_PRESENT
(NONE)
BATTERY_PRESENT
THERM_COLD
BATTERY_PRESENT
THERM_OR
THERM_COLD
DESCRIPTION
Underrange
500
to 3k
Hot
3k
to 30k
Ideal
30k
to 100k
Cold
Above 100k
Overrange
The required values for R
WEAK
, R
UR
and R
NR
are shown in
Table 5.
Table 5. Thermistor External Resistor Values
EXTERNAL RESISTOR
R
WEAK
R
UR
R
NR
Note:
The maximum allowed total external capacitance on THERM and
RNR is 75pF, due to settling time requirements.
VALUE (
)
475k
±
1%
1k
±
1%
10k
±
1%
Figure 5. Simplified V
LIMIT
Circuit Concept (I
LIMIT
Is Similar)
provide a measure of safety with a hardware restriction on
charging current which cannot be overridden by software.
V
LIMIT
12.5k
25k
33k
25k
25k
12.5k
R
LIMIT
V
DD
V
LIM
[3:0]
1759 F05
AC_PRESENT
4
+
–
+
–
+
–
+
–
ENCODER
The V
LIMIT
Decoder Block
The value of an external resistor connected from this pin
to GND determines one of five voltage limits that are
applied to the charger output value. These limits provide
a measure of safety with a hardware restriction on charg-
ing voltage which cannot be overridden by software.
Table 6. I
LIMIT
Trip Points and Ranges
EXTERNAL
RESISTOR
(R
ILIMIT
)
I
LIMIT
VOLTAGE
0
V
ILIMIT
< 0.09V
DD
10k
±
1%
0.17V
VDD
< V
ILIMIT
< 0.34V
VDD
33k
±
1%
0.42V
VDD
< V
ILIMIT
< 0.59V
Open (>250k, 0.66V
VDD
< V
ILIMIT
or Short to
V
DD
)
NOMINAL
CHARGING
CURRENT RANGE GRANULARITY
0 < I < 1023mA
0 < I < 2046mA
1mA
2mA
0 < I < 4092mA
4mA
0 < I < 8184mA
8mA
The I
LIMIT
Decoder Block
The value of an external resistor connected from this pin
to GND determines one of four current limits that are used
to limit the maximum charging current value. These limits
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| LTC1759CG#PBF | 功能描述:IC SMART BATTERY CHARGER 36SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 其它有關(guān)文件:STC3100 View All Specifications 特色產(chǎn)品:STC3100 - Battery Monitor IC 標(biāo)準(zhǔn)包裝:4,000 系列:- 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:2.7 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-TSSOP，8-MSOP（0.118"，3.00mm 寬） 供應(yīng)商設(shè)備封裝:8-MiniSO 包裝:帶卷 (TR) 其它名稱:497-10526-2 |
| LTC1759CG#TR | 功能描述:IC CHARGER SMART BATTERY 36SSOP RoHS:否 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) |
| LTC1759CG#TRPBF | 功能描述:IC SMART BATTERY CHARGER 36SSOP 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) |
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