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參數(shù)資料
| 型號： | RC5051 |
| 廠商： | Fairchild Semiconductor Corporation |
| 英文描述： | Programmable Synchronous DC-DC Controller for Low Voltage Microprocessors(用于低電壓微處理器的可編程同步DC-DC控制器) |
| 中文描述： | 可編程同步DC - DC控制器為低電壓微處理器（用于低電壓微處理器的可編程同步的DC - DC控制器） |
| 文件頁數(shù)： | 2/16頁 |
| 文件大?。?/td> | 141K |
| 代理商： | RC5051 |
RC5051
PRODUCT SPECIFICATION
2
REV. 1.0.4 4/2/01
Pin Assignments
Pin Definitions
Pin Number Pin Name
1
Pin Function Description
Oscillator Capacitor Connection
the internal oscillator frequency. Layout of this pin is critical to system performance.
See Application Information for details.
Output Enable
. A logic LOW on this pin will disable the output. An internal pull-up
resistor allows for either open collector or TTL compatibility.
Power Good Flag
. An open collector output that will be at logic LOW if the output
voltage is not within
±
12% of the nominal output voltage setpoint.
High Side Current Feedback
. Pins 4 and 5 are used as the inputs for the current
feedback control loop. Layout of these traces is critical to system performance. See
Application Information for details.
Voltage Feedback
. Pin 5 is used as the input for the voltage feedback control loop and
as the low side current feedback input. See Application Information for details regarding
correct layout.
Analog VCC
. Connect to system 5V supply and decouple with a 0.1
capacitor.
Power VCC for low side FET driver
. Connect to system 5V supply and place a 1
ceramic capacitor for decoupling and local charge storage.
VID4 Input
. A logic 1 on this open collector/TTL input will enable the VID3–VID0 inputs
to set the output from 2.1V to 3.5V, and a logic 0 will set the output from 1.3V to 2.05V,
as shown in Table 1. Pullup resistors are internal to the controller.
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".
Power Ground
. Return pin for high currents flowing in pins 7 and 13 (VCCP and
VCCQP). Connect to a low impedance ground.
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".
Power VCC
. For high side FET driver. VCCQP must be connected to a voltage of at
least VCCA + V
GS,ON
(MOSFET), and place a 1
and local charge storage. See Application Information for details
Digital Ground
. Return path for digital logic. Connect to a low impedance system
ground plane to minimize ground loops.
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.
Reference Voltage Test point
. This pin provides access to the DAC output and should
be decoupled to ground using 0.1
μ
F capacitor. No load should be connected.
Voltage Identification Code Inputs
. These open collector/TTL compatible inputs will
program the output voltage over the ranges specified in Table 1. Pull-up resistors are
internal to the controller.
CEXT
. Connecting an external capacitor to this pin sets
2
ENABLE
3
PWRGD
4
IFB
5
VFB
6
VCCA
μ
F ceramic
7
VCCP
μ
F
8
VID4
9
LODRV
10, 11
GNDP
12
HIDRV
13
VCCQP
μ
F ceramic capacitor for decoupling
14
GNDD
15
GNDA
16
VREF
17-20
VID0-VID3
1
2
3
4
5
6
8
7
VID0
VID1
VID2
VID3
VREF
GNDA
GNDD
VCCQP
20
19
18
17
16
15
13
9
12
10
11
65-5051-02
14
CEXT
ENABLE
PWRGD
IFB
VFB
VCCA
VCCP
RC5051
VID4
GNDP
HIDRV
GNDP
LODRV
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|---|---|
| RC5051M | Current-Mode SMPS Controller |
| RC5054 | Programmable Synchronous DC-DC Converter Controller for Low Voltage Microprocessors |
| RC5054A | Programmable Synchronous DC-DC Converter Controller for Low Voltage Microprocessors |
| RC5054AM | |
| RC5057 | High Performance Programmable Synchronous DC-DC Controller for Low Voltage Microprocessors |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| RC5051B WAF | 制造商:Fairchild Semiconductor Corporation 功能描述: |
| RC5051M | 功能描述:DC/DC 開關控制器 DC-DC Converter Prog Sync RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| RC5051M_32 | 功能描述:開關變換器、穩(wěn)壓器與控制器 DC-DC Converter Prog Sync RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| RC5051MT | 功能描述:開關變換器、穩(wěn)壓器與控制器 Prog Sync DC-DC Low Voltage UPS RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| RC5051MT_32 | 功能描述:開關變換器、穩(wěn)壓器與控制器 Prog Sync DC-DC Low Voltage UPS RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
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