参数资料
| 型号： | SC2443MLTRT |
| 厂商： | Semtech |
| 文件页数： | 9/22页 |
| 文件大小： | 0K |
| 描述： | IC DUAL SYNC STP-DN CTRLR 24MLPQ |
| 标准包装： | 1 |
| 应用： | 控制器，DDR |
| 输入电压： | 4.75 V ~ 16 V |
| 输出数： | 2 |
| 输出电压： | 可调至 0.5V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-MLPQ |
| 供应商设备封装： | 24-MLPQ（4x4） |
| 包装： | 标准包装 |
| 产品目录页面： | 1358 (CN2011-ZH PDF) |
| 其它名称： | SC2443MLDKR |
SC2443
Pin Descriptions
Pin #
2
3
4
5
6
7
8
9
0
2
3
4
5
6
7
8
9
20
2
22
23
24
Pin Name
IN -
COMP
SYNC
AGND
REF
REFIN
COMP2
IN2-
CS2-
CS2+
SS2/EN2
AVCC
BST2
GDH2
GDL2
PGND
PVCC
GDL
GDH
BST
SS /EN
CS +
CS -
ROSC
THPAD
Pin Function
Inverting Input of the Error Amplifier for the Step-down Controller .
The Error Amplifier Output for Step-down Controller .
Edge-triggered Synchronization Input. When not synchronized, tie this pin to a voltage above .5V
or the ground. An external clock (frequency > frequency set with ROSC) at this pin synchronizes the
controllers.
Analog Signal Ground
Buffered Output of the Internal 0.5V Reference. The non-inverting input of the error amplifier for the
step-down converter is internally connected to this pin
An external Reference voltage is applied to this pin.The non-inverting input of the error amplifier for
the step-down converter 2 is internally connected to this pin.
The Error Amplifier Output for Step-down Controller 2.
Inverting Input of the Error Amplifier for the Step-down Controller 2. Tie to AVCC for two-phase single
output applications.
The Inverting Input of the Current-sense Amplifier/Comparator for the Controller 2.
The Non-inverting Input of the Current-sense Amplifier/Comparator for the Controller 2.
An external capacitor tied to this pin sets (i) the soft-start time (ii) output overload latch off time for
step-down converter 2. Pulling this pin below 0.7V shuts off the gate drivers for the second controller.
Leave open for two-phase single output applications.
Power Supply Voltage for the Analog Portion of the Controllers.
Bootstrapped Supply for the High-side Gate Drive 2.
Gate Drive Output for the High-side N-channel MOSFET of Output 2.
Gate Drive Output for the Low-side N-channel MOSFET of Output 2.
Ground Supply for All the Gate drivers.
Power Supply Voltage for Low-side MOSFET Drivers.
Gate Drive Output for the Low-side N-channel MOSFET of Output .
Gate Drive Output for the High-side N-channel MOSFET of Output .
Bootstrapped Supply for the High-side Gate Drive .
An external capacitor tied to this pin sets (i) the soft-start time (ii) output overload latch off time for
buck converter . Pulling this pin below 0.7V shuts off the gate drivers for the first controller.
The Non-inverting Input of the Current-sense Amplifier/Comparator for the Controller .
The Inverting Input of the Current-sense Amplifier/Comparator for the Controller
An external resistor connected from this pin to GND sets the oscillator frequency
Solder to the Analog ground plane of the PCB.
9
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PDF描述 |
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| SC2446ITETRT | IC SYNC STEP DOWN CTRLR 28-TSSOP |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SC2446 | 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:Dual-Phase Single or Two Output Synchronous Step-Down Controllers |
| SC2446A | 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:Dual-Phase, Single or Dual Output Synchronous Step-Down Controller |
| SC2446AEVB | 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:Dual-Phase, Single or Dual Output Synchronous Step-Down Controller |
| SC2446AITSTRT | 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:Dual-Phase, Single or Dual Output Synchronous Step-Down Controller |
| SC2446EVB | 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:Dual-Phase Single or Two Output Synchronous Step-Down Controllers |
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