SG3825CQ Просмотр технического описания (PDF) - Microsemi Corporation

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SG3825CQ

HIGH-SPEED CURRENT-MODE PWM

Microsemi Corporation 

PRODUCT DATABOOK 1996/1997

SG1825C/SG2825C/SG3825C

HIGH-SPEED CURRENT-MODE PWM

NOT RECOMMENDED FOR NEW DESIGNS

R E C O M M E N D E D O P E R A T I N G C O N D I T I O N S (Note 2)

Parameter

Symbol

Recommended Operating Conditions

Min.

Typ.

Max.

Supply Voltage Range

Voltage Amp Common Mode Range

Ramp Input Voltage Range

Current Limit / Shutdown Voltage Range

Source / Sink Output Current

Continuous

Pulse, 500ns

Voltage Reference Output Current

Oscillator Frequency Range

Oscillator Charging Current

Oscillator Timing Resistor

Oscillator Timing Capacitor

Operating Ambient Temperature Range:

SG1825C

SG2825C

SG3825C

Note 2. Range over which the device is functional.

10

30

1.5

5.5

0

5.0

0

4.0

200

1.0

1

10

4

1500

0.030

3

RT

1

100

CT

0.470

10

TA

0

70

TA

-25

85

TA

-55

125

Units

V

V

V

V

mA

A

mA

kHz

mA

kΩ

nF

°C

°C

°C

E L E C T R I C A L C H A R A C T E R I S T I C S (Note 3)

(Unless otherwise specified, these specifications apply over the operating ambient temperatures for SG3825C with 0°C ≤ TA ≤ 70°C, SG2825C with

-25°C ≤ TA ≤ 85°C, SG1825C with -55°C ≤ TA ≤ 125°C, and VIN=VC=15V. Low duty cycle pulse testing techniques are used which maintains junction

and case temperatures equal to the ambient temperature.)

Parameter

Reference Section

Output Voltage

Line Regulation

Load Regulation

Temperature Stability (Note 3)

Total Output Range (Note 3)

Output Noise Voltage (Note 3)

Long Term Stability (Notes 3 &4)

Short Circuit Current

Oscillator Section (Note 5)

Initial Accuracy

Voltage Stability

Temperature Stability (Note 3)

Total Frequency Limits (Note 3)

Minimum Frequency

Maximum Frequency

Clock High Level

Clock Low Level

Ramp Peak Voltage

Ramp Valley Voltage

Valley-to-Peak Amplitude

Symbol

Test Conditions

TJ = 25°C, IL = 1mA

VIN = 10 to 30V

IL = 1 to 10mA

Over Operating Temperature

Over Line, Load, and Temperature

f = 10Hz to 10kHz, IL = 0mA

TJ = 125°C, t = 1000hrs

VREF = 0V

TJ = 25°C, CCLK ≤ 10pF

VIN = 10 to 30V

Over Rated Operating Temperature

Over Line and Temperature

RT = 100KΩ, CT = 0.01µF

RT = 1KΩ, CT = 470pF

ICLK = -1mA

ICLK = -1mA

SG1825C/2825C

SG3825C

Units

Min. Typ. Max. Min. Typ. Max.

5.05 5.10 5.15 5.05 5.10 5.15

2 15

2 15

5 15

5 15

0.2 0.4

0.2 0.4

5.00

5.20 5.00

5.20

50 200

50

5 25

5 25

-15 -50 -100 -15 -50 -100

V

mV

mV

mV/°C

V

µV RMS

mV

mA

370 400 430 370 400 430

0.2 2

0.2 2

58

58

350

450 350

450

4

4

1.5

1.5

3.9 4.5

3.9 4.5

2.3 2.9

2.3 2.9

2.6 2.8 3.0 2.6 2.8 3.0

0.7 1.0 1.25 0.7 1.0 1.25

1.6 1.8 2.0 1.6 1.8 2.0

kHz

%

%

kHz

kHz

MHz

V

V

V

V

V

Note 3. This parameter is guaranteed by design and process control, but is not 100% tested in production.

Note 4. This parameter is non-accumulative, and represents the random fluctuation of the reference voltage within some error band when observed

over any 1000 hour period of time.

Copyright © 1994

Rev. 1.3a

3

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