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参数资料
| 型号： | LTC4110EUHF#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 5/52页 |
| 文件大小： | 0K |
| 描述： | IC BATTERY BACKUP MANAGER 38-QFN |
| 标准包装： | 2,500 |
| 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： | 带卷 (TR) |
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LTC4110
ELECTRICAL CHARACTERISTICS The l denotes the speci?cations which apply over the full operating
temperature range, otherwise speci?cations are at T A = 25°C. Unless otherwise speci?ed, V DCIN = V DCOUT = V DCDIV = 12V, V BAT = 8.4V,
GND = SGND = CLP = CLN = SHDN = 0V and R VREF = 49.9k. All currents into device pins are positive and all currents out of device pins
are negative. All voltages are referenced to GND, unless otherwise speci?ed.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Input and Battery Ideal Diodes and Switches
V FR
Forward Regulation Voltage (V DCIN -V DCOUT ,
2.7V ≤ V DCIN ≤ 19V
l
10
20
32
mV
V BAT -V DCOUT )
V REV
Reverse Voltage Turn-Off Voltage
2.7V ≤ V DCIN ≤ 19V
l
–30
–18
–8
mV
(V DCIN -V DCOUT , V BAT -V DCOUT )
V GON
“ON” Gate Clamping Voltage (V DCIN -V INID ,
I INID , I BATID = 1 μ A
7
8.3
9.7
V
V BAT -V BATID )
V GOFF
“OFF” Gate Voltage (V DCIN -V INID , V BAT -V BATID ) I INID , I BATID = –10 μ A
0.25
V
V SHDN = 0V and V DCIN (Shutdown)
V FO
BATID Fast-On Voltage Comparator Threshold
I BATID > 500μA
45
100
mV
INID Pin Delay Times
C INID = 10nF
DCIN is Switched Between 12.2V and 11.8V
t IIDON
t IIDOFF
Turn “ON”
Turn “OFF”
From DCOUT – V GOFF to DCOUT –6V
From DCOUT – V GON to DCOUT –1.5V
450
8
700
20
μs
μs
BATID Pin Delay Times
C BATID = 2.5nF
BAT is Switched Between 12.2V and 11.8V
t BIDON
t BIDOFF
Turn “ON”
Turn “OFF”
From DCOUT – V GOFF to DCOUT –6V
From DCOUT – V GON to DCOUT –1.5V
15
8
60
20
μs
μs
PWM Flyback Converter
V OHF
V OLF
CHGFET, DCHFET High
CHGFET, DCHFET Low
I CHGFET , I DCHFET = –1mA
I CHGFET , I DCHFET = 1mA
4.5
4.75
5.25
50
V
mV
V OLFX
CHGFET, DCHFET in Shutdown and Backup
V DCIN = V DCDIV = V DCOUT = 0V (Shutdown
Modes
Mode), V DCIN = V DCDIV = 0V (Backup Mode)
100
mV
I CHGFET , I DCHFET = 1μA
CHGFET, DCHFET Transition Times
t R
t F
Rise Time
Fall Time
C LOAD = 1.6nF, 20% to 80%
C LOAD = 1.6nF, 20% to 80%
35
15
65
65
ns
ns
F PWM
PWM Oscillator Switching Frequency
l
255
300
340
kHz
SafetySignal Decoder and Thermistor Interface
SS OR
SafetySignal Decoder
SafetySignal Trip
R THA = 1130 Ω ±1%, C TH = 1nF (Note 6) R THB
= 54.9k ±1%.
l
95
100
105
k
(RES_COLD/RES_OR)
Smart Batteries and Li-Ion Only
SS CLD
SafetySignal Decoder
SafetySignal Trip
R THA = 1130 Ω ±1%, C TH = 1nF (Note 6) R THB
= 54.9k ±1%
l
28.5
30
31.5
k
(RES_IDEAL/RES_COLD)
Smart Batteries and Li-Ion Only
SS IDL
SafetySignal Decoder
SafetySignal Trip
R THA = 1130 Ω ±1%, C TH = 1nF (Note 6) R THB
= 54.9k ±1%
l
2.85
3
3.15
k
(RES_HOT/RES_IDEAL)
Smart Batteries and Li-Ion Only
SS HOT
SafetySignal Decoder
SafetySignal Trip
R THA = 1130 Ω ±1%, C TH = 1nF (Note 6) R THB
= 54.9k ±1%
l
425
500
575
Ω
(RES_UR/RES_HOT)
Smart Batteries and Li-Ion Only
V HOT
THB Pin Hot Threshold Voltage
V THB Decreasing; Lead Acid Only
l
0.28 ?
0.30 ?
0.36 ?
V
V THA
V THA
V THA
V HOTH
THB Pin Hot Threshold Hysteresis Voltage
V THB Increasing; Lead Acid Only
50
mV
V REM
THB Pin Battery Removal Threshold Voltage
V THB Increasing; Lead Acid Only
l
0.90 ?
0.94 ?
0.96 ?
V
V THA
V THA
V THA
4110fb
5
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