- 您现在的位置：买卖IC网 > PDF目录1826 > LTC1149CS#PBF (Linear Technology)IC REG CTRLR BUCK PWM CM 16-SOIC PDF资料下载
参数资料
| 型号： | LTC1149CS#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： | 1 |
| 频率 - 最大： | 250kHz |
| 占空比： | 100% |
| 电源电压： | 最高 48V |
| 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： | 1333 (CN2011-ZH PDF) |
LTC1149
LTC1149-3.3/LTC1149-5
ELECTRICAL C HARA C TERISTICS
T A = 25 ° C, V IN = 12V, V 10 = 0V (Note 2), unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V 9 – V 8
Current Sense Threshold Voltage
LTC1149
V 8 = 5V, V 10 = 1.32V (Forced)
25
mV
LTC1149-3.3
LTC1149-5
V 8 = V OUT – 100mV
V 8 = 3.5V (Forced)
V 8 = V OUT – 100mV
V 8 = 5.3V (Forced)
V 8 = V OUT – 100mV
q
q
q
130
130
130
150
25
150
25
150
170
170
170
mV
mV
mV
mV
mV
V 10
Shutdown 1 Threshold
LTC1149-3.3, LTC1149-5
0.5
0.8
2
V
V 15
I 15
Shutdown 2 Threshold
Shutdown 2 Input Current
V 15 = 5V
0.8
1.4
18
2
25
V
μ A
I 6
t OFF
t r , t f
C T Pin Discharge Current
Off-Time (Note 4)
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, 13), 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 5), unless otherwise noted.
SYMBOL
V 10
PARAMETER
Feedback Voltage LTC1149 Only
CONDITIONS
MIN
1.2
TYP
1.25
MAX
1.3
UNITS
V
V OUT
Regulated Output Voltage
V IN = 9V
LTC1149-3.3
LTC1149-5
I LOAD = 700mA
I LOAD = 700mA
3.17
4.85
3.33
5.05
3.43
5.2
V
V
I 2
Input DC Supply Current (Note 3)
Normal Mode
Burst Mode
Shutdown
V IN = 12V
V IN = 48V
V IN = 12V
V IN = 48V
V IN = 12V, V 15 = 2V
V IN = 48V, V 15 = 2V
2.0
2.2
0.6
0.8
135
300
3.2
3.5
1.05
1.30
230
520
mA
mA
mA
mA
μ A
μ A
V CC
Internal Regulator Voltage
V IN = 12V to 48V
9.75
10.25
11
V
(Sets MOSFET Gate Drive Levels)
I 3 = 20mA
V 9 – V 8
Current Sense Threshold Voltage
Low Threshold (Forced)
25
mV
High Threshold (Forced)
125
150
175
mV
V 15
Shutdown 2 Threshold
0.8
1.4
2
V
t OFF
Off-Time (Note 4)
C T = 390pF, I LOAD = 700mA, V IN = 10V
3.8
5
6
μ s
The q denotes specifications which apply over the full operating
temperature range.
Note 1: T J is calculated from the ambient temperature T A and power
dissipation P D according to the following formulas:
LTC1149CN, LTC1149CN-3.3, LTC1149CN-5: T J = T A + (P D )(70 ° C/W)
LTC1149CS, LTC1149CS-3.3, LTC1149CS-5: T J = T A + (P D )(110 ° C/W)
Note 2: Pin 10 is a shutdown pin on the LTC1149-3.3 and LTC1149-5
fixed output voltage versions and must be at ground potential for testing.
Note 3: Dynamic supply current is higher due to the gate charge being
delivered at the switching frequency. The allowable operating frequency
may be limited by power dissipation at high input voltages. See Typical
Performance Characteristics and Applications Information.
Note 4: In applications where R SENSE is placed at ground potential, the off-
time increases approximately 40%.
Note 5: The LTC1149, LTC1149-3.3, and LTC1149-5 are not tested and
not quality assurance sampled at – 40 ° C and 85 ° C. These specifications
are guaranteed by design and/or correlation.
3
相关PDF资料 |
PDF描述 |
|---|---|
| LTC1159CG-5#PBF | IC REG CTRLR BUCK PWM CM 20-SSOP |
| LTC1174CN8-3.3#PBF | IC REG BUCK INV 3.3V 1A 8DIP |
| LTC1235CSW#TRPBF | IC MPU SUPERVISRY CIRCUIT 16SOIC |
| LTC1261CS | IC REG SWITCHED CAP INV 14SOIC |
| LTC1262IS8 | IC DC/DC CONV FLASHMEM 12V 8SOIC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC1150 | 制造商:LINER 制造商全称:Linear Technology 功能描述:15V CHOPPER STABILIZED OPERATIONAL AMPLIFIER WITH INTERNAL CAPACITORS |
| LTC1150_03 | 制造商:LINER 制造商全称:Linear Technology 功能描述:【15V Zero-Drift Operational Amplifier with Internal Capacitors |
| LTC1150C | 制造商:LINER 制造商全称:Linear Technology 功能描述:+-15V Chopper Stabilized Operational Amplifier with Internal Capacitors |
| LTC1150CH | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Chopper-Stabilized Operational Amplifier |
| LTC1150CJ8 | 制造商:LINER 制造商全称:Linear Technology 功能描述:15V CHOPPER STABILIZED OPERATIONAL AMPLIFIER WITH INTERNAL CAPACITORS |
发布紧急采购，3分钟左右您将得到回复。