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参数资料
| 型号： | LTC1147CS8-5#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 3/16页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM CM 8-SOIC |
| 标准包装： | 100 |
| PWM 型： | 电流模式 |
| 输出数： | 1 |
| 占空比： | 100% |
| 电源电压： | 3.5 V ~ 14 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： | 8-SOIC（0.154"，3.90mm 宽） |
| 包装： | 管件 |
| 产品目录页面： | 1332 (CN2011-ZH PDF) |
LTC1147-3.3
LTC1147-5/LTC1147L
ELECTRICAL CHARACTERISTICS
T A = 25 ° C, V IN = 10V, V SHDN = 0V, unless otherwise noted.
SYMBOL
V 5 – V 4
PARAMETER
Current Sense Threshold Voltage (Note 6)
LTC1147-3.3, LTC1147L-3.3
LTC1147–5
LTC1147L
CONDITIONS
V SENSE– = V OUT + 100mV (Forced)
V SENSE– = V OUT – 100mV (Forced)
V SENSE– = V OUT + 100mV (Forced)
V SENSE– = V OUT – 100mV (Forced)
V SENSE– = 5V, V6 = V OUT /4 + 25mV (Forced)
V SENSE– = 5V, V6 = V OUT /4 – 25mV (Forced)
MIN
130
130
130
TYP
25
150
25
150
25
150
MAX
170
170
170
UNITS
mV
mV
mV
mV
mV
mV
V 6
SHDN Pin Threshold
LTC1147-3.3/LTC1147-5/LTC1147L-3.3
0.5
0.8
2
V
I 6
SHDN Pin Input Current
LTC1147-3.3/LTC1147-5/LTC1147L-3.3
0V < V SHDN < 8V, V IN = 16V
1.2
5
μ A
I 2
C T Pin Discharge Current
V OUT in Regulation, V SENSE
V OUT = 0V
– =V
OUT
50
70
2
90
10
μ A
μ A
t OFF
t r , t f
Off-Time (Note 3)
Driver Output Transition Times
C T = 390pF, I LOAD = 700mA
C L = 3000pF (Pin 8), V IN = 6V
4
5
100
6
200
μ s
ns
– 40 ° C ≤ T A ≤ 85 ° C (Note 4), V IN = 10V, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V 6
Feedback Voltage (LTC1147L)
V IN = 9V
q
1.20
1.25
1.30
V
V OUT
Regulated Output Voltage
V IN = 9V
LTC1147-3.3/LTC1147L-3.3
LTC1147-5
I LOAD = 700mA
I LOAD = 700mA
q
q
3.17
4.85
3.33
5.05
3.43
5.20
V
V
I Q
Input DC Supply Current (Note 2)
LTC1147 Series
(Note 5)
Normal Mode
Sleep Mode
Sleep Mode (LTC1147-5)
Shutdown
4V < V IN < 12V
4V < V IN < 12V
5V < V IN < 12V
V SHDN = 2.1V, 4V < V IN < 12V
1.6
160
160
10
2.4
260
260
22
mA
μ A
μ A
μ A
LTC1147L Series
Normal Mode
Sleep Mode
Shutdown (LTC1147L-3.3)
3.5V < V IN < 12V
3.5V < V IN < 12V
V SHDN = 2.1V, 3.5V < V IN < 12V
1.6
160
10
2.4
260
22
mA
μ A
μ A
V 5 – V 4
Current Sense Threshold Voltage (Note 6)
LTC1147-3.3
LTC1147-5
LTC1147L
V SENSE – = V OUT + 100mV (Forced)
V SENSE – = V OUT – 100mV (Forced)
V SENSE – = V OUT + 100mV (Forced)
V SENSE – = V OUT – 100mV (Forced)
V SENSE– = 5V, 6V = V OUT /4 + 25mV (Forced)
V SENSE– = 5V, 6V = V OUT /4 – 25mV (Forced)
q
q
125
125
125
25
150
25
150
25
150
185
185
185
mV
mV
mV
mV
mV
mV
V 6
SHDN Pin Threshold
LTC1147-3.3/LTC1147-5/LTC1147L-3.3
0V < V SHDN < 8V, V IN = 16V
0.5
0.8
2
V
t OFF
Off-Time (Note 3)
C T = 390pF, I LOAD = 700mA
3.8
5
6.5
μ s
The q denotes specifications which apply over the full specified
temperature range.
Note 1: T J is calculated from the ambient temperature T A and power
dissipation P D according to the following formulas:
LTC1147CN8-3.3/LTC1147CN8-5: T J = T A + (P D )(110 ° C/W)
LTC1147LIS/LTC1147IS8/LTC1147LCS/
LTC1147CS8-3.3/LTC1147CS8-5: T J = T A + (P D )(150 ° C/W)
Note 2: 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 LTC1147C 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 and 85 ° C. The
LTC1147I is guaranteed to meet the extended temperature limits.
Note 5: The LTC1147L/LTC1147L-3.3 allow operation to V IN = 3.5V.
Note 6: The LTC1147L is tested with external feedback resistors resulting
in a nominal output voltage of 2.5V.
sn1147 1147fds
3
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| LTC1147HVCS8-3.3 | 功能描述:IC REG CTRLR BUCK PWM CM 8-SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:500kHz 占空比:96% 电源电压:4 V ~ 36 V 降压:无 升压:是 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 125°C 封装/外壳:24-WQFN 裸露焊盘 包装:带卷 (TR) |
| LTC1147HVCS8-3.3#PBF | 功能描述:IC REG CTRLR BUCK PWM CM 8-SOIC RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:4,000 系列:- PWM 型:电压模式 输出数:1 频率 - 最大:1.5MHz 占空比:66.7% 电源电压:4.75 V ~ 5.25 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:-40°C ~ 85°C 封装/外壳:40-VFQFN 裸露焊盘 包装:带卷 (TR) |
| LTC1147HVCS8-3.3#TR | 功能描述:IC REG CTRLR BUCK PWM CM 8-SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:500kHz 占空比:96% 电源电压:4 V ~ 36 V 降压:无 升压:是 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 125°C 封装/外壳:24-WQFN 裸露焊盘 包装:带卷 (TR) |
| LTC1147HVCS8-3.3#TRPBF | 功能描述:IC REG CTRLR BUCK PWM CM 8-SOIC RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:4,000 系列:- PWM 型:电压模式 输出数:1 频率 - 最大:1.5MHz 占空比:66.7% 电源电压:4.75 V ~ 5.25 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:-40°C ~ 85°C 封装/外壳:40-VFQFN 裸露焊盘 包装:带卷 (TR) |
| LTC1147I | 制造商:LINER 制造商全称:Linear Technology 功能描述:High Efficiency Step-Down Switching Regulator Controllers |
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