參數(shù)資料
型號(hào)： LTC1759
廠商： Linear Technology Corporation
英文描述： Octal D-Type Edge-Triggered Read-Back Latches 24-SOIC 0 to 70
中文描述： 智能電池充電器
文件頁(yè)數(shù)： 23/28頁(yè)
文件大?。?/td> 362K
代理商： LTC1759
23
LTC1759
APPLICATIO
S I
N
FOR
ATIO
U
Charge Termination Issues
Batteries with constant current charging and voltage-
based charger termination might experience problems
with reductions of charger current caused by adapter
limiting. It is recommended that input limiting feature be
defeated in such cases. Consult the battery manufacturer
for information on how your battery terminates charging.
W
U
Setting Output Current Limit (Refer to Figure 10)
The LTC1759 current DAC and the PWM analog circuitry
must coordinate the setting of the charger current. Failure
to do so will result in incorrect charge currents.
Table 8. Recommended Resistor Values
I
MAX
R
SENSE
(A)
(
) 1%
1.023
0.100
2.046
0.05
4.092
0.025
8.184
0.012
R
SENSE
(W)
0.25
0.25
0.5
1
R
S1
= R
S2
(
) 1%
200
200
200
200
R
SET
(
) 1%
3.83k
3.83k
3.83k
4.02k
R
ILIMIT
(
) 1%
0
10k
33k
Open
Warning
DO NOT CHANGE THE VALUE OF R
ILIMIT
DURING OPERA-
TION. The value must remain fixed and track the R
SENSE
and R
SET
values at all times. Changing the current setting
can result in currents that greatly exceed the requested
value and potentially damage the battery or overload the
wall adapter if no input current limiting is provided.
Example Calculations
Setting up the output current to the desired value involves
calculating these values:
1. R
SENSE
: This resistor is the current sense resistor on the
charger output.
2. R
SET
: This resistor sets the current DAC output pro-
gramming current scale.
3. R
ILIMIT
: This resistor programs the full-scale value of
the current DAC (I
MAX
).
The value of R
SENSE
and R
SET
are directly related to each
other based on the values chosen for R
S1
and R
S2
. To
prevent current sense op amp input bias errors, the value
of R
S1
and R
S2
are kept the same, about 200
. R
SET
is
used to scale the PROG pin current relative to the R
SENSE
voltage drop to set the maximum current value.
The following example is for a 4A design.
UV
V
DD
SYNC
SDB
CHGEN
V
LIMIT
I
LIMIT
DGND
I
SET
PROG
V
C
COMP1
AGND
RNR
THERM
SDA
SCL
INTB
22
21
8
32
9
10
2
33
34
1
3
35
30
29
31
23
26
36
R
SET
, 3.83k
R4, 1.5k
LTC1759
R7, 1k
RUR
1k
R3
499
R
475k
RNR
10k
C9, 0.1
μ
F
C13, 0.33
μ
F
V
DD
V
DD
C11, 1
μ
F
C12, 0.68
μ
F
R
VLIMIT
, 33k
R
ILIMIT
, 33k
R
CL
, 0.033
R
S1
, 200
R
S2
, 200
R6
68
R1
15.8k
R2
1k
C2
0.47
μ
F
C5, 2.2
μ
F
C6
0.68
μ
F
C8
0.047
μ
F
C4, 0.1
μ
F
C1
1
μ
F
Q1
Q3
D1
Q2
L1
15
μ
H
C16
22
μ
F
SYSTEM
POWER
R
0.025
D2
D2
7
16
4
5
12
25
24
18
17
28
27
11
6
20
19
14
15
13
DCIN
DCDIV
INFET
V
CC
CLP
CLN
TGATE
BOOSTC
GBIAS
BOOST
SW
BGATE
SPIN
SENSE
BAT1
BAT2
V
SET
PGND
C7
0.015
μ
F
C3
22
μ
F
C14
0.1
μ
F
C15
10
μ
F
35V
Al
AC
ADAPTER
INPUT
SMART
BATTERY
INTB
SMBus
TO
HOST
D1: MBRS130LT3
D2: FMMD7000
L1: SUMIDA CDRH127-150
Q1: Si3457DV
Q2, Q3: Si3456DV
1759 F10
+
+
Figure 10. 4A SMBus Smart Battery Charger
相關(guān)PDF資料
PDF描述
LTC1759CG Smart Battery Charger
LTC2050 Zero-Drift Operational Amplifier in SOT-23
LTC2050CS5 Zero-Drift Operational Amplifier in SOT-23
LTC2050CS6 Zero-Drift Operational Amplifier in SOT-23
LTC2050CS8 Zero-Drift Operational Amplifier in SOT-23
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC1759CG 功能描述:IC SMART BATTERY CHARGER 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#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)
LTC1760CFW 功能描述:IC MANAGER BATTERY DUAL 48TSSOP 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)
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*