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参数资料
| 型号： | LTC1143CS |
| 厂商： | Linear Technology |
| 文件页数： | 6/20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： | -40°C ~ 85°C |
| 封装/外壳： | 16-SOIC（0.154"，3.90mm 宽） |
| 包装： | 管件 |
| 其它名称： | LTC1143CSW LTC1143CSW-ND |
LTC1143/LTC1143L
LTC1143L-ADJ
PI N FU N CTIO N S
V IN3 (Pin 13): Supply Pin, 3.3V Section. Must be closely
decoupled to 3.3V power ground Pin 3.
C T3 (Pin 14): External capacitor C T3 from Pin 14 to ground
sets the operating frequency for the 3.3V section. (The
actual frequency is also dependent upon the input voltage.)
I TH3 (Pin 15): Gain Amplifier Decoupling Point, 3.3V
Section. The 3.3V section current comparator threshold
increases with the Pin 15 voltage.
SENSE – 3 (Pin 16): Connects to internal resistive
divider which sets the output voltage for the 3.3V
section. Pin 16 is also the (–) input for the current
comparator on the 3.3V section.
LTC1143L-ADJ
SENSE + 1 (Pin 1): The (+) Input to the Section 1 Current
Comparator. A built-in offset between Pins 1 and 16 in
conjunction with R SENSE 1 sets the current trip threshold
for section 1.
V FB1 (Pin 2): This pin serves as the feedback pin from an
external resistive divider used to set the output voltage for
section 1.
GND1 (Pin 3): Section 1 Ground. Two independent ground
lines must be routed separately from other grounds to: 1)
the (–) terminal of the section 1 output capacitor and 2) the
cathode of the Schottky diode D1 and (–) terminal of C IN1
(see Figure 1).
P-DRIVE 1 (Pin 4): High Current Drive for Top P-Channel
MOSFET, Section 1. Voltage swing at this pin is from V IN1
to ground.
V IN2 (Pin 5): Supply Pin, Section 2. Must be closely
decoupled to power ground Pin 11.
C T2 (Pin 6): External capacitor C T2 from Pin 6 to ground sets
the operating frequency for section 2. (The actual frequency
is also dependent upon the input voltage.)
6
I TH2 (Pin 7): Gain Amplifier Decoupling Point, Section 2.
The section 2 current comparator threshold increases
with the Pin 7 voltage.
SENSE – 2 (Pin 8): Pin 8 is the (–) input for the current
comparator on section 2.
SENSE + 2 (Pin 9): The (+) Input to the Section 2 Current
Comparator. A built-in offset between Pins 9 and 8 in
conjunction with R SENSE 2 sets the current trip threshold
for section 2.
V FB2 (Pin 10): This pin serves as the feedback pin from an
external resistive divider used to set the output voltage for
section 2.
GND2 (Pin 11): Section 2 Ground. Two independent
ground lines must be routed separately from other grounds
to: 1) the (–) terminal of section 2 output capacitor and 2)
the cathode of the Schottky diode D2 and (–) terminal of
C IN2 (see Figure 1).
P-DRIVE 2 (Pin 12): High Current Drive for Top P-Channel
MOSFET, Section 2. Voltage swing at this pin is from V IN2
to ground.
V IN1 (Pin 13): Supply Pin, Section 1. Must be closely
decoupled to power ground Pin 3.
C T1 (Pin 14): External capacitor C T1 from Pin 14 to ground
sets the operating frequency for section 1. (The actual
frequency is also dependent upon the input voltage.)
I TH1 (Pin 15): Gain Amplifier Decoupling Point, Section 1.
The section 1 current comparator threshold increases
with the Pin 15 voltage.
SENSE – 1 (Pin 16): Pin 16 is the (–) input for the
current comparator on section 1.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC1143CS#PBF | 功能描述:IC REG CTRLR BUCK PWM CM 16-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: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) |
| LTC1143CS#TR | 功能描述:IC REG CTRLR BUCK PWM CM 16-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) |
| LTC1143CS#TRPBF | 功能描述:IC REG CTRLR BUCK PWM CM 16-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: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) |
| LTC1143L | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual High Efficiency SO-16 Step-Down Switching Regulator Controllers |
| LTC1143L-ADJ | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual High Efficiency SO-16 Step-Down Switching Regulator Controllers |
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