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参数资料
| 型号： | LTC4110EUHF#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 33/52页 |
| 文件大小： | 0K |
| 描述： | IC BATTERY BACKUP MANAGER 38-QFN |
| 标准包装： | 52 |
| 功能： | 备份管理 |
| 电池化学： | 铅酸，锂离子，锂聚合物，镍镉，镍氢，超级电容器 |
| 电源电压： | 4.5 V ~ 19 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 38-WFQFN 裸露焊盘 |
| 供应商设备封装： | 38-QFN（5x7） |
| 包装： | 管件 |
| 产品目录页面： | 1341 (CN2011-ZH PDF) |
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LTC4110
APPLICATIONS INFORMATION
The ?rst con?guration option to set for the LTC4110 is the
type and cell count of the battery you wish to use. Pins
TYPE and SELC are use to set this con?guration. Please
note NiMH and NiCd batteries are only supported in the
smart battery con?guration. The three state input pins
SELA, SELC and TYPE should NOT be changed while power
is applied to the IC unless in shutdown mode. Such action
will result in unpredictable behavior from the LTC4110.
SUPERCAPS
Table 8 shows all of the options with the exception of
SuperCaps. SuperCaps are supported by using standard
Li-ion or SLA modes in combination with the adjusting the
charge voltage with the V CHG pin. As far as the LTC4110
is concerned, it is still working with a Li-ion or SLA bat-
tery and will follow all the charge states as required for
that chemistry. Table 9 shows the required con?guration
based on the desired cap voltage and series cell count.
Other per cell voltages can be obtained by adjusting the
V CHG pin as required.
When the LTC4110 is con?gured to charge a super cap,
if TYPE pin is tied to 0.5V REF , use the bulk charge current
equation (see the Programming Charging/Calibration Cur-
rent section for details) to set the charging current. If TYPE
pin is tied to GND, then the charging current will equal
to preconditioning charge current when the cap voltage
is below the bulk charge threshold (as listed in Table 9)
and bulk charge current when the voltage is above the
threshold. Simply tie the I PCC pin to I CHG pin if these two
currents need to be the same. If the capacitor is too small
(<10mF), the voltage might rise too fast to be regulated
by the loop. In that case, the capacitor will be charged to
over voltage pretection threshold (typically 107.5% of the
?oat voltage. See V BOV )
Table 8. Battery Type and Number of Series Cell Selection for Batteries
STANDARD Li-Ion
(TYPE = GND)
SLA
(TYPE = 0.5V REF )
SMART NiMH/NiCd
(TYPE = V REF )
SMART Li-Ion
(TYPE = V DD )
SELC = GND
SELC = 0.5V REF
SELC = V REF
SELC = V DD
1
2
3
4
2
3
5
6
4
6
9
10
1
2
3
4
Note: When smart battery is selected by the TYPE pin, SELA pin must be connected to GND to select address 12h.
Table 9. Battery Type and Number of Series Cell Selection for Super Caps
SERIES CAP
STACK CAP
BULK CHARGE
CAP VOLTAGE (V)
2.5
2.5
2.5
2.5
2.5
2.7
2.7
2.7
3
3
3
3
COUNT
2
3
5
6
7
3
5
6
3
4
5
6
VOLTAGE (V)
5
7.5
12.5
15
17.5
8.1
13.5
16.2
9
12
15
18
TYPE
0.5V REF
0.5V REF
0.5V REF
0.5V REF
GND
GND
GND
GND
GND
GND
0.5V REF
GND
SELC
GND
0.5V REF
V REF
V DD
V DD
0.5V REF
V REF
V DD
0.5V REF
V REF
V DD
V DD
V CHG
0.625V REF
0.625V REF
0.625V REF
0.625V REF
0.646V REF
0.375V REF
0.750V REF
0.375V REF
0.750V REF
0.333V REF
0.625V REF
0.750V REF
THRESHOLD (V/CELL)
N/A
N/A
N/A
N/A
1.71
2
1.8
2
2
2.25
N/A
2
4110fb
33
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相关代理商/技术参数 |
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| LTC4110EUHF-TR | 制造商:LINER 制造商全称:Linear Technology 功能描述:Battery Backup System Manager |
| LTC4110EUHF-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Battery Backup System Manager |
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