参数资料
型号: LTC1558CGN-3.3#PBF
厂商: Linear Technology
文件页数: 3/20页
文件大小: 0K
描述: IC BACKUP BATT CNTRLR3.3V 16SSOP
标准包装: 100
功能: 备份管理
电池化学: 镍镉
电源电压: 2.9 V ~ 3.46 V
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 16-SSOP(0.154",3.90mm 宽)
供应商设备封装: 16-SSOP
包装: 管件
LTC1558-3.3/LTC1558-5
ELECTRICAL CHARACTERISTICS
V BAT = 1.2V, T A = 0 ° C to 70 ° C unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V UVLO(ON)
V UVLO(OFF)
V LOBAT
V CC UVLO Trip Voltage (Note 4)
V CC UVLO Recovery Trip Voltage (Note 4)
V BAT UVLO Trip Voltage (Note 5)
LTC1558-3.3
LTC1558-5
LTC1558-3.3
LTC1558-5
q
q
q
q
q
2.90
4.40
3.00
4.55
0.85
3.00
4.55
3.10
4.70
0.9
3.10
4.70
3.20
4.85
0.95
V
V
V
V
V
Backup Battery Charger
I CHGF
Battery Charge Current
Fast Recharge
q
11
16
21
mA
I CHGT
Programmable Trickle Charge Current Range
0.05
2
mA
Q RECH
Fast Recharge Factor (Note 6)
1.35
1.6
1.85
C/C
Q TRK
Nominal Trickle Charge Multiplier Factor
I CHGT = 1mA
8
10
12
A/A
V CTL(CLAMP)
Trickle Charge Clamp Voltage
I CHGT = 1mA
q
0.45
0.5
0.55
V
Pushbutton Reset
V CTL
t CTL
CTL Input Threshold
CTL Input Low Time (Debounce Time)
20
250
mV
ms
Reset Timer
t HRESET
Pushbutton Duration for Hard Reset
1.10
1.8
3.4
s
t RST
V RST1
V RST
RESET Pulse Width
RESET Output Voltage
RESET Output Voltage
V CTL Low for < t HRESET (Soft Reset)
V CTL Low for > t HRESET (Hard Reset)
V CC = 1V, I SINK = 10 μ A
V CC = 4.25V, I SINK = 1.6mA
q
q
q
q
50
115
80
185
5
0.1
150
345
200
0.4
μ s
ms
mV
V
I SC
RESET Output Current
Short-Circuit Current
Output Source Current, V CC = 3.3V
Output Source Current, V CC = 5V
Output Sink Current, V CC = 3.3V
Output Sink Current, V CC = 5V
10
20
20
40
mA
mA
mA
mA
Internal V CC Monitor Comparator
t PLH
V UVLO(ON) Comparator Propagation
? V CC = – (9% V CC + 300mV), V OD = 300mV
9
μ s
Delay (Rising)
Shutdown Pin (Note 3)
V SHDN
SHDN Input Threshold
Logic Low, V IL
Logic High, V IH
q
q
2
0.8
V
V
I SHDN
SHDN Pin Bias Current
V CC = 5V, V SHDN = 0V
q
8
15
μ A
Feedback Pin
I FB
FB Pin Bias Current
1
10
nA
The q denotes specifications which apply over the full operating
temperature range.
Note 1: Absolute Maximum Ratings are those values beyond which the life of
a device may be impaired.
Note 2: Quiescent current is measured during pushbutton reset.
Note 3: Only applies to 16-pin version.
Note 4: Thresholds will track each other and are guaranteed not to overlap.
Note 5: Low cell voltage reset is only triggered when 0.25V < V CTL < 0.9V
for at least 20 μ s while in backup mode.
Note 6: Fast recharge factor is defined as the ratio of charge replenished to
the NiCd battery during fast recharge to the charge drawn from the NiCd
battery during backup.
Note 7: The LTC1558 switches automatically between the low and high
operating current levels. See Applications Information for more details.
3
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