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| 型號(hào)： | TC2575-12.0VAT |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 3.2 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, PSFM5 |
| 封裝： | TO-220, 5 PIN |
| 文件頁(yè)數(shù)： | 1/26頁(yè) |
| 文件大小： | 172K |
| 代理商： | TC2575-12.0VAT |
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TC2575
TC2575-1 3/13/00
2001 Microchip Technology Inc.
DS21398A
1.0A Step-Down Switching Regulator
GENERAL DESCRIPTION
The TC2575 series of regulators are monolithic inte-
grated circuits ideally suited for easy and convenient design
of a step–down switching regulator (buck converter). All
circuits of this series are capable of driving a 1.0A load with
excellent line and load regulation. These devices are avail-
able in fixed output voltages of 3.3V, 5.0V, 12V, and
an adjustable output version.
These regulators were designed to minimize the num-
ber of external components to simplify the power supply
design. Standard series of inductors optimized for use with
the TC2575 are offered by several different inductor manu-
facturers.
Since the TC2575 converter is a switch-mode power
supply, its efficiency is significantly higher in comparison
with popular three-terminal linear regulators, especially with
higher input voltages. In many cases, the power dissipated
is so low, that no heatsinking is required or its size can be
reduced dramatically.
The TC2575 features include a guaranteed
±4% toler-
ance on output voltage within specified input voltages and
output load conditions, and
±10% on the oscillator frequency
(
±2% over 0°C to +125°C). External shutdown is included,
featuring 80
A (typical) standby current. The output switch
includes cycle-by-cycle current limiting, as well as thermal
shutdown for full protection under fault conditions.
FEATURES
s
3.3V, 5.0V, 12V, and Adjustable Output Versions
s
Adjustable Version Output Voltage Range of
1.23V to 37V
±4% Max. Over Line and Load Conditions
s
Guaranteed 1.0 A Output Current
s
Wide Input Voltage Range; 4.75V to 40V
s
Requires Only 4 External Components
s
52kHz Fixed Frequency Internal Oscillator
s
TTL Shutdown Capability, Low Power Standby Mode
s
High Efficiency
s
Uses Readily Available Standard Inductors
s
Thermal Shutdown and Current Limit Protection
APPLICATIONS
s
Simple and High-Efficiency Step-Down
(Buck) Regulator
s
Efficient Pre–Regulator for Linear Regulators
s
On–Card Switching Regulators
s
Positive to Negative Converters (Buck–Boost)
s
Negative Step-Up Converters
s
Power Supply for Battery Chargers
ORDERING INFORMATION
Part
Temperature
Number
Package
Range
TC2575-3.3VAT
5-Pin TO-220
–40 to +125
°C
TC2575-5.0VAT
5-Pin TO-220
–40 to +125
°C
TC2575-12.0VAT* 5-Pin TO-220
–40 to +125
°C
TC2575VAT**
5-Pin TO-220
–40 to +125
°C
PIN CONFIGURATIONS
5-Pin TO-220
Note: * Contact factory for availability
** ADJ = 1.23 To 37V.
GND
V
IN
OUTPUT
FEEDBACK
ON/OFF
1 2 34 5
TC2575
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TC2575-3.3VAT | 制造商:TELCOM 制造商全稱:TelCom Semiconductor, Inc 功能描述:1.0A Step-Down Switching Regulator |
| TC2575-5.0VAT | 制造商:TELCOM 制造商全稱:TelCom Semiconductor, Inc 功能描述:1.0A Step-Down Switching Regulator |
| TC2575VAT | 制造商:TELCOM 制造商全稱:TelCom Semiconductor, Inc 功能描述:1.0A Step-Down Switching Regulator |
| TC258 | 制造商:MCM 功能描述:6FT DC POWER CORD STRAIGHT 2.5X5.5 18 AWG |
| TC258B | 制造商:Datak Corporation 功能描述: |
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