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| 型号： | LTC1143LCS#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 3/20页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM CM 16-SOIC |
| 标准包装： | 50 |
| PWM 型： | 电流模式 |
| 输出数： | 2 |
| 频率 - 最大： | 400kHz |
| 占空比： | 100% |
| 电源电压： | 3.5 V ~ 16 V |
| 降压： | 是 |
| 升压： | 无 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | 0°C ~ 70°C |
| 封装/外壳： | 16-SOIC（0.154"，3.90mm 宽） |
| 包装： | 管件 |
| 产品目录页面： | 1332 (CN2011-ZH PDF) |
LTC1143/LTC1143L
LTC1143L-ADJ
ELECTRICAL CHARACTERISTICS
T A = 25 ° C, V IN = 10V unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V 1 to V 16 ,
Current Sense Threshold Voltage
V 8 to V 9
V 2 , V 10
LTC1143/LTC1143L
LTC1143L-ADJ
Shutdown Pin Threshold
V 2 = V 10 = 0V
V SENSE – = V OUT + 100mV (Forced)
V SENSE – = V OUT – 100mV (Forced)
V SENSE– = 5V, V FB = V OUT /4 + 25mV (Forced)
V SENSE– = 5V, V FB = V OUT /4 – 25mV (Forced)
q
q
130
130
0.5
25
150
25
150
0.8
170
170
2
mV
mV
mV
mV
V
LTC1143/LTC1143L
I 2 , I 10
Shutdown Pin Input Current
0V < V SHUTDOWN = < 8V, V IN3, V IN5 = 16V
1.2
5
μ A
LTC1143/LTC1143L
I 6 , I 14
t OFF
t r , t f
C T Pin Discharge Current
Off-Time (Note 3)
Driver Output Transition Times
V OUT in Regulation, V SENSE- = V OUT
V OUT = 0V
C T = 390pF, I LOAD = 700mA
C L = 3000pF (Pins 4, 12), V IN = 6V
50
4
70
2
5
100
90
10
6
200
μ A
μ A
μ s
ns
–40 ° C ≤ T A ≤ 85 ° C (Note 4), V IN = 10V unless otherwise noted.
V 2 , V 10
Feedback Voltage (LTC1143L-ADJ)
V IN = 9V
1.20
1.25
1.30
V
V OUT
Regulated Output Voltage
LTC1143/LTC1143L
V IN3, V IN5 = 9V
3.3V Output
5V Output
I LOAD = 700mA
I LOAD = 700mA
3.17
4.85
3.33
5.05
3.43
5.20
V
V
I 5 , I 13
Input DC Supply Current (Note 2)
LTC1143: Normal Mode
Sleep Mode
Shutdown
LTC1143L: Normal Mode
Sleep Mode
Shutdown
LTC1143L-ADJ: Normal Mode
Sleep Mode
V 2 = V 10 = 0V, 4V < V IN < 12V
V 2 = V 10 = 0V, 4V < V IN3 < 12V, 6V < V IN5 < 12V
V 2 = V 10 = 2.1V, 4V < V IN < 12V
V 2 = V 10 = 0V, 3.5V < V IN < 12V
V 2 = V 10 = 0V, 3.5V < V IN3 < 12V, 6V < V IN5 < 12V
V 2 = V 10 = 2.1V, 3.5V < V IN < 12V
3.5V < V IN < 12V
3.5V < V IN < 12V, V OUT ≤ 3.3V
1.6
160
10
1.6
160
10
1.6
160
2.4
260
22
2.4
260
22
2.4
260
mA
μ A
μ A
mA
μ A
μ A
mA
μ A
V 1 to V 16 ,
Current Sense Threshold Voltage
V 8 to V 9
V 2 , V 10
LTC1143/LTC1143L
LTC1143L-ADJ
Shutdown Pin Threshold
V 2 = V 10 = 0V
V SENSE – = V OUT + 100mV (Forced)
V SENSE – = V OUT – 100mV (Forced)
V SENSE– = 5V, V FB = V OUT /4 + 25mV (Forced)
V SENSE– = 5V, V FB = V OUT /4 – 25mV (Forced)
125
125
0.55
25
150
25
150
0.8
185
185
2
mV
mV
mV
mV
V
LTC1143/LTC1143L
The q denotes specifications which apply over the specified temperature
range.
Note 1: T J is calculated from the ambient temperature T A and power
dissipation P D according to the following formula:
LTC1143 series: T J = T A + (P D ? 125 ° C/W)
Note 2: This supply current is for one regulator block. Total supply
current is the sum of Pin 5 and Pin 13 currents. Dynamic supply current
is higher due to the gate charge being delivered at the switching
frequency. See Applications Information.
Note 3: In applications where R SENSE is placed at ground potential, the
off-time increases approximately 40%.
Note 4: The LTC1143 series is guaranteed to meet specified performance
from 0 ° C to 70 ° C and is designed, characterized and expected to meet
these extended temperature limits, but is not tested at –40 ° C to 85 ° C.
3
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC1144 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Low Noise Dual Supply |
| LTC1144C | 制造商:LINER 制造商全称:Linear Technology 功能描述:Switched-Capacitor Wide Input Range Voltage Converter with Shutdown |
| LTC1144CN8 | 功能描述:IC REG SWITCHED CAP INV 8DIP RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:2,500 系列:- 类型:升压（升压） 输出类型:可调式 输出数:1 输出电压:1.24 V ~ 30 V 输入电压:1.5 V ~ 12 V PWM 型:电流模式，混合 频率 - 开关:600kHz 电流 - 输出:500mA 同步整流器:无 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 包装:带卷 (TR) 供应商设备封装:8-SOIC |
| LTC1144CN8#PBF | 功能描述:IC REG SWITCHED CAP INV 8DIP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:250 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.2V 输入电压:2.05 V ~ 6 V PWM 型:电压模式 频率 - 开关:2MHz 电流 - 输出:500mA 同步整流器:是 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:6-UFDFN 包装:带卷 (TR) 供应商设备封装:6-SON（1.45x1） 产品目录页面:1032 (CN2011-ZH PDF) 其它名称:296-25628-2 |
| LTC1144CN8PBF | 制造商:Linear Technology 功能描述:LTC1144CN8PBF |
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