参数资料
型号: LTC1559CGN-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 ~ 3.5 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
LTC1559-3.3/LTC1559-5
ELECTRICAL CHARACTERISTICS
V BAT = 1.2V, T A = 0 ° C to 70 ° C unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
UVLO Reset Monitor
V LOBAT2
V BAT UVLO Trip Voltage (Note 5)
q
0.85
0.9
0.95
V
Backup Battery Charger
I CHGF
I CHGT
Battery Charge Current During Fast Recharge
User-Programmable Trickle Charge
q
q
11
0.05
16
21
2
mA
mA
Current Range
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
q
8
10
12
A/A
V CTL(CLAMP) CTL Clamp Voltage in Trickle Mode
I CHGT = 1mA
q
0.45
0.5
0.55
V
Push-Button Reset
V CTL
CTL Input Threshold
250
mV
t CTL
CTL Input Low Time (Debounce Time)
20
26
ms
Reset Timer
t HRESET
Push-Button Duration for Hard Reset
1.10
1.8
3.4
sec
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
PS Comparator
V HYST
Comparator Threshold Hysteresis
T A = 25 ° C
90
mV
Internal V CC Monitor Comparator
tr
UVLO, Comparator Propagation Delay (Rising)
7.5
μ s
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
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 push-button reset.
Note 3: Only applies to 16-pin version.
Note 4: Although the V BAK(ON) , V BAK(OFF) , V UVLO(ON) and V UVLO(OFF)
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the NiCd battery during fast recharge to the charge withdrawn from the
NiCd battery during backup.
Note 7: The LTC1559 switches automatically between the low and high
operating current levels. See Applications Information for more details.
threshold voltages have a specification tolerance, they are guaranteed by
design and tested in production never to overlap.
3
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