参数资料
型号: LTC1844ES5-SD#TRPBF
厂商: Linear Technology
文件页数: 11/12页
文件大小: 0K
描述: IC REG LDO ADJ .15A TSOT23-5
产品培训模块: More Information on LDOs
标准包装: 2,500
稳压器拓扑结构: 正,可调式
输出电压: 1.25 V ~ 6 V
输入电压: 1.6 V ~ 6.5 V
电压 - 压降(标准): 0.135V @ 150mA
稳压器数量: 1
电流 - 输出: 150mA(最小值)
电流 - 限制(最小): 160mA
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: SOT-23-5 细型,TSOT-23-5
供应商设备封装: TSOT-23-5
包装: 带卷 (TR)
LTC1844 Series
APPLICATIO N S I N FOR M ATIO N
In circuits where a backup battery is required, several
different input/output conditions can occur. The output
voltage may be held up externally while the input is either
pulled to ground, pulled to some intermediate voltage or
left open circuit. The LTC1844 features reverse current
protection to limit current draw from any supplementary
power source at the output. When V IN is pulled to ground
or is left open circuit, I IN and I OUT are less than 0.1 μ A for
V OUT = 0V to 7V.
When V IN is held constant and V OUT varied, current flow
will follow the curves shown in Figure 7. With V OUT held
below V OUT(NOM) , the LTC1844 will be in current limit
trying to pull V OUT up. With V OUT held between V OUT(NOM)
and V IN , I IN will be at the normal quiescent current level
and I OUT will be 1 μ A to 2 μ A. As V OUT is pulled above V IN ,
I OUT temporarily increases to 30 μ A until the reverse cur-
rent protection circuitry activates and reduces I OUT to less
than 10 μ A.
Alternatively, when V OUT is held constant and V IN varied,
current flow will follow Figure 8’s curves. I OUT will be less
than 10 μ A at all times except for a brief spike just below
2.7V before the reverse current protection circuitry
activates.
50
45
40
35
30
25
20
IN CURRENT
LIMIT BELOW
2.8V
LTC1844-2.8
T J = 25 ° C
V IN = 3.3V
CURRENT FLOWS
INTO PINS
100
90
80
70
60
50
40
LTC1844-2.8
T J = 25 ° C
V OUT = 2.7V
CURRENT FLOW
INTO PINS
IN CURRENT
LIMIT ABOVE
2.7V
15
10
5
I OUT
I IN
30
20
10
I IN
I OUT
0
0
0
1
2
3
4
5
6
7
0
0.5
1.0
1.5 2.0
2.5
3.0
OUTPUT VOLTAGE (V)
1844 F07
Figure 7. Reverse Current vs Output Voltage
INPUT VOLTAGE (V)
1844 F08
Figure 8. Reverse Current vs Input Voltage
1844fa
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
11
相关PDF资料
PDF描述
LTC1844ES5-SD#TR IC REG LDO ADJ .15A TSOT23-5
LTC1844ES5-1.5#TRPBF IC REG LDO 1.5V .15A TSOT23-5
GMC25DRXI-S734 CONN EDGECARD 50POS DIP .100 SLD
LTC1844ES5-1.5#TR IC REG LDO 1.5V .15A TSOT23-5
LTC1844ES5-2.5#TRPBF IC REG LDO 2.5V .15A TSOT23-5
相关代理商/技术参数
参数描述
LTC1850CFW 功能描述:IC ADC 10BIT 1.25MSPS 48-TSSOP RoHS:否 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1,000 系列:- 位数:16 采样率(每秒):45k 数据接口:串行 转换器数目:2 功率耗散(最大):315mW 电压电源:模拟和数字 工作温度:0°C ~ 70°C 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) 输入数目和类型:2 个单端,单极
LTC1850CFW#PBF 功能描述:IC ADC 10BIT 1.25MSPS 48-TSSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1,000 系列:- 位数:16 采样率(每秒):45k 数据接口:串行 转换器数目:2 功率耗散(最大):315mW 电压电源:模拟和数字 工作温度:0°C ~ 70°C 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) 输入数目和类型:2 个单端,单极
LTC1850CFW#TR 功能描述:IC ADC 10BIT 1.25MSPS 48-TSSOP RoHS:否 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1,000 系列:- 位数:16 采样率(每秒):45k 数据接口:串行 转换器数目:2 功率耗散(最大):315mW 电压电源:模拟和数字 工作温度:0°C ~ 70°C 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) 输入数目和类型:2 个单端,单极
LTC1850CFW#TRPBF 功能描述:IC ADC 10BIT 1.25MSPS 48-TSSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1,000 系列:- 位数:16 采样率(每秒):45k 数据接口:串行 转换器数目:2 功率耗散(最大):315mW 电压电源:模拟和数字 工作温度:0°C ~ 70°C 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) 输入数目和类型:2 个单端,单极
LTC1850IFW 功能描述:IC ADC 10BIT 1.25MSPS 48-TSSOP RoHS:否 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1,000 系列:- 位数:16 采样率(每秒):45k 数据接口:串行 转换器数目:2 功率耗散(最大):315mW 电压电源:模拟和数字 工作温度:0°C ~ 70°C 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) 输入数目和类型:2 个单端,单极