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参数资料
| 型号： | LTC4110EUHF#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 9/52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
PIN FUNCTIONS
ACPb (Pin 13): AC Present Status Digital Output. Open-
Drain N-MOSFET output is asserted low when the main
supply is present as detected by the DCDIV pin and internal
DCIN UVLO.
V DIS (Pin 14): Battery Discharge Voltage Limit During
Backup Program Input. Battery threshold voltage at which
backup mode will terminate by turning off the isolation
P-MOSFET with the BATID pin. Adjustable from external
resistor string biased from V REF pin. For default threshold
connect to GND pin.
V CAL (Pin 15): Battery Voltage Limit During Calibra-
tion Program Input. Battery threshold voltage at which
calibration will terminate. Adjustable from external resistor
string biased from V REF pin. For default threshold connect
to GND pin.
V CHG (Pin 16): Battery Float Voltage Program Input. Trims
the ?oat voltage during charging. Programmed from
external resistor string biased from V REF pin. Connect to
GND for default ?oat voltage.
V REF (Pin 17): Voltage Reference Output and Timing Pro-
gramming Input. Provides a typical virtual reference of 1.220V
(V REF ) for an external resistor divider tied between this pin and
GND that programs the V CHG , V CAL and V DIS pin functions.
Total resistance from V REF to GND, along with the capacitor
on the timer pin, programs the charge time. Voltage refer-
ence output remains active in all modes except shutdown.
Load current must be between 10μA and 25μA.
TIMER (Pin 18): Charge Timing Input. A capacitor con-
nected between TIMER and GND along with the resistance
connected from V REF to GND programs the charge time
intervals.
TYPE (Pin 19): Refer to Table 8.
THA (Pin 20): SafetySignal Force/Sense Pin to Smart
Battery and Force Pin to Lead Acid Battery Thermistor.
See description of operation for more detail. The maxi-
mum allowed combined capacitance on THA, THB and
THB (Pin 21): SafetySignal Force/Sense Pin to Smart
Battery and Sense Pin to Lead Acid Battery Thermistor.
See description of operation for more detail. The maxi-
mum allowed combined capacitance on THA, THB and
SafetySignal is 1nF.
I PCC (Pin 22): Battery Preconditioning Charge Current
Program Input. Programs the battery current during
preconditioning or wakeup charging. Programmed from
external resistor to GND.
I CAL (Pin 23): Battery Discharge Current During Calibration
Program Input. Programs the constant discharge current at
the battery during calibration. Programmed from external
resistor to GND.
I CHG (Pin 24): Battery Current During Charge Program Input.
Programs the battery current while constant-current bulk
charging. Programmed from external resistor to GND.
I TH (Pin 25): Control Signal of the Current Mode PWM. AC
compensates control loop. Higher I TH voltage corresponds
to higher charging current.
CSP (Pin 26): Current Sense Positive Input. This pin and
the CSN pin measure voltage across the external current
sense resistor to control battery current during charging
and calibration.
CSN (Pin 27): Current Sense Negative Input. This pin and
the CSP pin measure voltage across the external current
sense resistor to control battery current during charging
and calibration.
SGND (Pin 28): Signal Ground Reference Input. This pin
should be Kelvin connected to the ?yback current sense
resistor and to the battery return.
I SENSE (Pin 29): Current Sense Input. Senses current in
the ?yback transformer by monitoring voltage across the
external current sense resistor. This pin should be Kelvin-
connected to the resistor.
SELC (Pin 30): Refer to Table 8.
SafetySignal is 1nF. For lead acid battery applications the
maximum capacitance on the THA pin is 50pF.
4110fb
9
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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 |
| LTC4120IUD#PBF | 制造商:Linear Technology 功能描述:BATTERY CHARGER, 400MA, QFN-16, Battery Type:Li-Ion, Li-Polymer, Input Voltage:4 |
| LTC4150 | 制造商:LINER 制造商全称:Linear Technology 功能描述:High Voltage, High-Side Current Sense |
| LTC4150_1 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Coulomb Counter/ Battery Gas Gauge |
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