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参数资料
| 型号： | LTC1559CS8-5#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 7/20页 |
| 文件大小： | 0K |
| 描述： | IC BACKUP BATT CNTRLR 5V 8-SOIC |
| 标准包装： | 100 |
| 功能： | 备份管理 |
| 电池化学： | 镍镉 |
| 电源电压： | 4.4 V ~ 5.5 V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 管件 |
LTC1559-3.3/LTC1559-5
SWITCHI N G WAVEFOR M S
Cold Power Boot-Up Description
1. System regulator starts to ramp up the output (PS)
once the V BAT voltage increases beyond the minimum
input value.
2. V CC starts to increase once PS is high enough to turn on
Q EXT ’s body diode. RESET is asserted when V CC is less
than or equal to 1V.
Backup Mode (Main Battery Discharged)—
LTC1559-3.3
3. The LTC1559’s internal bandgap wakes up. Q EXT turns
on and V CC = PS. The LTC1559’s internal boost con-
verter does not turn on as RESET remains asserted.
4. RESET is asserted for a further 200ms after V CC reaches
– 5.5% of its rated V CC value for the LTC1559-3.3 and
– 6% of its rated V CC value for the LTC1559-5.
V NiCd
1.2V
BOOST CONVERTER OUTPUT
–5.5%
1V
0.9V
V CC
BACKUP
INDUCTOR
CURRENT
– 7%
t r
– 7%
t r
t f
– 7%
t r
“1”
RESET
t r
“1”
LOBAT
(1)
(2)
(3)
(4)
1559 SW03
Backup Mode Description
1. Trigger into Backup Mode. Main battery fails and V CC
drops 7% below the rated value. The backup pin is
asserted after a t r delay time and the boost converter is
turned on.
2. Backup Mode. The LTC1559’s boost converter charges
and discharges the inductor with 165mA peak current.
If V CC doesn’t increase above V CC (rated value) – 7%
(due to a heavy load), the boost converter increases
peak charging current to 330mA. If V CC rises above
V CC (rated value) – 7%, the boost converter stops and
the backup pin remains asserted.
3. Recovery from Backup Mode. While the boost con-
verter is running, the main battery is restored. This
causes the system regulator to increase PS above V CC .
When PS > V CC or V CC > V CC (rated value) – 5.5%, the
BACKUP pin deasserts and the boost converter finishes
its last cycle.
4. Trigger into UVLO. During backup, the 1.2V NiCd cell is
discharged and its terminal voltage falls. The LOBAT pin
is asserted to give an early warning if the cell voltage
drops below 1V. RESET is asserted when the cell
voltage drops below 0.9V and the LTC1559 enters
UVLO mode.
7
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| LTC1560-1CS8 | 功能描述:IC FILTER ELLIPTIC LOWPASS 8SOIC RoHS:否 类别:集成电路 (IC) >> 接口 - 滤波器 - 有源 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1,000 系列:- 滤波器类型:连续时间，带通低通 频率 - 截止或中心:150kHz 滤波器数:4 滤波器阶数:8th 电源电压:4.74 V ~ 11 V，±2.37 V ~ 5.5 V 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC W 包装:带卷 (TR) |
| LTC1560-1CS8#PBF | 功能描述:IC FILTER ELLIPTIC LOWPASS 8SOIC RoHS:是 类别:集成电路 (IC) >> 接口 - 滤波器 - 有源 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1,000 系列:- 滤波器类型:连续时间，带通低通 频率 - 截止或中心:150kHz 滤波器数:4 滤波器阶数:8th 电源电压:4.74 V ~ 11 V，±2.37 V ~ 5.5 V 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC W 包装:带卷 (TR) |
| LTC1560-1CS8#TR | 功能描述:IC FILTER LP ELLIPTIC 5ORD 8SOIC RoHS:否 类别:集成电路 (IC) >> 接口 - 滤波器 - 有源 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1,000 系列:- 滤波器类型:连续时间，带通低通 频率 - 截止或中心:150kHz 滤波器数:4 滤波器阶数:8th 电源电压:4.74 V ~ 11 V，±2.37 V ~ 5.5 V 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC W 包装:带卷 (TR) |
| LTC1560-1CS8#TRPBF | 功能描述:IC FILTER ELLIPTIC LOWPASS 8SOIC RoHS:是 类别:集成电路 (IC) >> 接口 - 滤波器 - 有源 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1,000 系列:- 滤波器类型:连续时间，带通低通 频率 - 截止或中心:150kHz 滤波器数:4 滤波器阶数:8th 电源电压:4.74 V ~ 11 V，±2.37 V ~ 5.5 V 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC W 包装:带卷 (TR) |
| LTC1560-1IS8 | 功能描述:IC FILTER ELLIPTIC LOWPASS 8SOIC RoHS:否 类别:集成电路 (IC) >> 接口 - 滤波器 - 有源 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1,000 系列:- 滤波器类型:连续时间，带通低通 频率 - 截止或中心:150kHz 滤波器数:4 滤波器阶数:8th 电源电压:4.74 V ~ 11 V，±2.37 V ~ 5.5 V 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC W 包装:带卷 (TR) |
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