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参数资料
| 型号： | RC5057MT |
| 厂商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分类： | 稳压器 |
| 中文描述： | SWITCHING CONTROLLER, 345 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封装： | SOIC-16 |
| 文件页数： | 12/23页 |
| 文件大小： | 215K |
| 代理商： | RC5057MT |
RC5057
PRODUCT SPECIFICATION
2
REV. 1.2.0 2/10/00
Pin Assignments
Pin Denitions
Pin Number
Pin Name
Pin Function Description
1
ENABLE/SS
Output Enable/Softstart. A logic LOW on this pin will disable the output. An
internal current source allows for open collector control. This pin also doubles as
soft start.
2
PWRGD
Power Good Flag. An open collector output that will be logic LOW if the output
voltage is not within ±12% of the nominal output voltage setpoint.
3
IFB
Current Feedback. Pin 3 is used in conjunction with pin 10, as the input for the
current feedback control loop. Layout of these traces is critical to system
performance. See Application Information for details.
4
VFB
Voltage Feedback. Pin 4 is used as the input for the voltage feedback control
loop. See Application Information for details regarding correct layout.
5
VCCA
Analog VCC. Connect to system 5V supply and decouple with a 0.1F ceramic
capacitor.
6
GNDP
Power Ground. Return pin for high currents flowing in pin 8 (VCCP). Connect to
a low impedance ground.
7
LODRV
Low Side FET Driver. Connect this pin to the gate of an N-channel MOSFET for
synchronous operation. The trace from this pin to the MOSFET gate should be
<0.5".
8
VCCP
Power VCC. For both high side and low side FET drivers. Connect to system 12V
supply, and decouple with a 4.7F tantalum and a 0.1F ceramic capacitor.
9
HIDRV
High Side FET Driver. Connect this pin to the gate of an N-channel MOSFET.
The trace from this pin to the MOSFET gate should be <0.5".
10
SW
High side driver source and low side driver drain switching node. Together
with IFB pin allows FET sensing for current.
11
GNDA
Analog Ground. Return path for low power analog circuitry. This pin should be
connected to a low impedance system ground plane to minimize ground loops.
12–16
VID0-4
Voltage Identification Code Inputs. These open collector/TTL compatible inputs
will program the output voltage over the ranges specified in Table 2. Pull-up
resistors are internal to the controller.
1
2
3
4
5
6
7
8
9
10
11
12
16
15
14
13
RC5057
ENABLE/SS
PWRGD
IFB
VFB
VCCA
GNDP
LODRV
VCCP
VID0
VID1
VID2
VID3
VID4
GNDA
SW
HIDRV
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相关代理商/技术参数 |
参数描述 |
|---|---|
| RC5057N | 功能描述:开关变换器、稳压器与控制器 DIP-16 RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| RC5058 | 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:High Performance Programmable Synchronous DC-DC Controller for Multi-Voltage Platforms |
| RC5058M | 功能描述:开关变换器、稳压器与控制器 SOIC-24 RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| RC5058MT | 功能描述:开关变换器、稳压器与控制器 SOIC-24 RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| RC5060 | 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:ACPI Switch Controller |
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