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參數資料
| 型號： | LM20333AMHE |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩壓器 |
| 英文描述： | 6 A SWITCHING REGULATOR, 240 kHz SWITCHING FREQ-MAX, PDSO20 |
| 封裝： | TSSOP-20 |
| 文件頁數： | 2/6頁 |
| 文件大小： | 526K |
| 代理商： | LM20333AMHE |
Connection Diagram
30077402
Top View
eTSSOP-20 Package
Ordering Information
Order Number
Package Type
NSC Package Drawing
Package Marking
Supplied As
LM20333AMH
eTSSOP-20
MXA20A
20333AMH
73 Units per Rail
LM20333AMHE
250 Units per Tape and Reel
LM20333AMHX
2500 Units per Tape and Reel
Pin Descriptions
Pin(s)
Name
Description
Application Information
1
SS/TRK
Soft-Start or Tracking control input
An internal 4.5 A current source charges an external capacitor to set
the soft-start rate. The PWM can track to an external voltage ramp with
a low impedance source. If left open, an internal 1 ms SS ramp is
activated.
2
FB
Feedback input to the error amplifier
from the regulated output
This pin is connected to the inverting input of the internal
transconductance error amplifier. An 800 mV reference is internally
connected to the non-inverting input of the error amplifier.
3
PGOOD
Power good output signal
Open drain output indicating the output voltage is regulating within
tolerance. A pull-up resistor of 10 k
to 100 k is recommended if this
function is used.
4
COMP
Output of the internal error amplifier and
input to the Pulse Width Modulator
The loop compensation network should be connected between the
COMP pin and the AGND pin.
5,6,15,16
VIN
Input supply voltage
Nominal operating range: 4.5V to 36V.
7,8,13,14
SW
Switch pin
The drain terminal of the internal Synchronous Rectifier power
NMOSFET and the source terminal of the internal Control power
NMOSFET.
9,10,11
GND
Ground
Internal reference for the power MOSFETs.
12
AGND
Analog ground
Internal reference for the regulator control functions.
17
BOOT
Boost input for bootstrap capacitor
An internal diode from VCC to BOOT charges an external capacitor
required from SW to BOOT to power the Control MOSFET gate driver.
18
VCC
Output of the high voltage linear
regulator. The VCC voltage is regulated
to approximately 5.5V.
VCC tracks VIN up to about 7.2V. Above VIN = 7.2V, VCC is regulated
to approximately 5.5 Volts. A 0.1 F to 1 F ceramic decoupling
capacitor is required. The VCC pin is an output only.
19
EN
Enable or UVLO input
An external voltage divider can be used to set the line undervoltage
lockout threshold. If the EN pin is left unconnected, a 2 A pull-up
current source pulls the EN pin high to enable the regulator.
www.national.com
2
LM20333A
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LM20333AMHX | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:36V, 3A Synchronous Buck Regulator with Frequency Synchronization |
| LM20333EVAL | 功能描述:電源管理IC開發工具 LM20333 EVAL BOARD RoHS:否 制造商:Maxim Integrated 產品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| LM20333EVAL/NOPB | 功能描述:電源管理IC開發工具 LM2033 EVAL BOARD RoHS:否 制造商:Maxim Integrated 產品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| LM20333MH | 制造商:Texas Instruments 功能描述:Conv DC-DC Single Step Down 4.5V to 36V 20-Pin TSSOP EP Rail 制造商:Texas Instruments 功能描述:BUCK REG, 3A, ADJ, POWERWISE, 20TSSOP 制造商:Texas Instruments 功能描述:BUCK REG, 3A, ADJ, POWERWISE, 20TSSOP; Primary Input Voltage:36V; No. of Outputs:1; Output Voltage:32V; Output Current:3A; Voltage Regulator Case Style:TSSOP; No. of Pins:20; Operating Temperature Min:-40C; Operating Temperature ;RoHS Compliant: Yes |
| LM20333MH/NOPB | 功能描述:直流/直流開關轉換器 36V,3A SYNC BUCK REG RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
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