- 您现在的位置：买卖IC网 > PDF目录15500 > LTC1142CG (Linear Technology)IC REG CTRLR BUCK PWM CM 28-SSOP PDF资料下载
参数资料
| 型号： | LTC1142CG |
| 厂商： | Linear Technology |
| 文件页数： | 4/20页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM CM 28-SSOP |
| 标准包装： | 47 |
| PWM 型： | 电流模式 |
| 输出数： | 2 |
| 频率 - 最大： | 250kHz |
| 占空比： | 100% |
| 电源电压： | 3.5 V ~ 18 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： | 28-SSOP（0.209"，5.30mm 宽） |
| 包装： | 管件 |
| 产品目录页面： | 1332 (CN2011-ZH PDF) |
LTC1142/LTC1142L/LTC1142HV
ELECTRICAL CHARACTERISTICS
– 40 ° C ≤ T A ≤ 85 ° C (Note 5), V 10 = V 24 = 10V, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
LTC1142, LTC1142HV
V 14 = V OUT + 100mV (Forced)
25
mV
V 14 = V OUT – 100mV (Forced)
125
150
175
mV
V SHDN
Shutdown Pin Threshold
0.55
0.8
2
V
t OFF
Off-Time (Note 4)
C T = 390pF, I LOAD = 700mA
3.8
5
6
μ s
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: T J is calculated from the ambient temperature T A and power
dissipation P D according to the following formula:
LTC1142CG: T J = T A + (P D × 95 ° C/ W)
Note 3: This current is for one regulator block. Total supply current is the
sum of Pins 10 and 24 currents. Dynamic supply current is higher due to
the gate charge being delivered at the switching frequency. See the
Note 4: In applications where R SENSE is placed at ground potential, the off-
time increases approximately 40%.
Note 5: The LTC1142/LTC1142L/LTC1142HV are guaranteed to meet
specified performance from 0 ° C to 70 ° C and are designed, characterized
and expected to meet these extended temperature limits, but are not tested
at – 40 ° C and 85 ° C. Guaranteed I-grade parts are available, consult the
factory.
Note 6: The LTC1142L-ADJ allows operation down to V IN = 3.5V.
Applications Information section.
TYPICAL PERFOR A CE CHARACTERISTICS
100
5V Output Efficiency
100
3.3V Output Efficiency
100
5V Efficiency vs Input Voltage
V IN = 6V
98
FIGURE 1 CIRCUIT
V OUT = 5V
95
95
V IN = 5V
96
94
I LOAD = 1A
V IN = 10V
92
V IN = 10V
90
88
I LOAD = 100mA
90
90
86
84
82
85
0.01
0.1
1
2
85
0.01
0.1
1
2
80
0
4
8
12
16
20
100
LOAD CURRENT (A)
1142 G01
3.3V Efficiency vs Input Voltage
40
LOAD CURRENT (A)
Line Regulation
1142 G02
20
INPUT VOLTAGE (V)
Load Regulation
1142 G03
98
96
94
92
90
88
86
84
82
I LOAD = 100mA
FIGURE 1 CIRCUIT
V OUT = 3.3V
I LOAD = 1A
30
20
10
0
– 10
– 20
– 30
FIGURE 1 CIRCUIT
I LOAD = 1A
0
–20
– 40
– 60
– 80
V IN = 6V
V IN = 6V
V OUT = 5V
V OUT = 3.3V
FIGURE 1 CIRCUIT
R SENSE = 0.05 ?
V IN = 12V
V IN = 12V
80
0
4
8
12
16
20
– 40
0
4
8
12
16
20
– 100
0
0.5
1.0
1.5
2.0
2.5
4
INPUT VOLTAGE (V)
1142 G04
INPUT VOLTAGE (V)
1142 G05
LOAD CURRENT (A)
1142 G06
相关PDF资料 |
PDF描述 |
|---|---|
| VI-JTM-EY-B1 | CONVERTER MOD DC/DC 10V 50W |
| SPD62-823M | INDUCTOR PWR SHIELDED 82.0UH SMD |
| VI-JT1-EY-B1 | CONVERTER MOD DC/DC 12V 50W |
| VI-J5N-EY-B1 | CONVERTER MOD DC/DC 18.5V 50W |
| VI-J5L-EY-B1 | CONVERTER MOD DC/DC 28V 50W |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC1142CG#PBF | 功能描述:IC REG CTRLR BUCK PWM CM 28-SSOP 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:2,000 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:1MHz 占空比:50% 电源电压:9 V ~ 10 V 降压:无 升压:是 回扫:是 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:8-TSSOP（0.173"，4.40mm 宽） 包装:带卷 (TR) |
| LTC1142CG#TR | 功能描述:IC REG CTRLR BUCK PWM CM 28-SSOP 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:4,500 系列:PowerWise® PWM 型:控制器 输出数:1 频率 - 最大:1MHz 占空比:95% 电源电压:2.8 V ~ 5.5 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 ~ 125°C 封装/外壳:6-WDFN 裸露焊盘 包装:带卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名称:LM1771SSDX |
| LTC1142CG#TRPBF | 功能描述:IC REG CTRLR BUCK PWM CM 28-SSOP 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) |
| LTC1142HV | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual High Efficiency Synchronous Step-Down Switching Regulators |
| LTC1142HV-ADJ | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual High Efficiency Synchronous Step-Down Switching Regulators |
发布紧急采购，3分钟左右您将得到回复。