SG1525A 데이터 시트보기 (PDF) - Microsemi Corporation

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SG1525A

Regulating Pulse Width Modulator

Microsemi Corporation 

Electrical Characteristics (continued)

Electrical Characteristics (continued)

Parameter

Test Conditions

Oscillator Section2

Initial Accuracy

TJ = 25C

Voltage Stability

Temperature Stability1

Minimum Frequency1

Maximum Frequency1

VIN = 8V to 35V

MIN ≤ TJ ≤ MAX

RT = 150kΩ, CT = 0.1μF

RT = 2 kΩ, CT = 1nF

Current Mirror

IRT = 2mA

Clock Amplitude

Clock Width

TJ = 25C

Sync Threshold

Sync Input Current

Sync Voltage = 3.5V

Error Amplifier Section (VCM = 5.1V)

Input Offset Voltage

Input Bias Current

Input Offset Current

DC Open Loop Gain

RL ≥ 10MΩ, TJ = 25C

Output Low Level

Output High Level

Common Mode Rejection VCM = 1.5V to 5.2 V

Supply Voltage Rejection VIN = 8V to 35V

PWM Comparator Section2

Minimum Duty Cycle

Maximum Duty Cycle

Input Threshold2

VCOMP = 0.6V

VCOMP = 3.6V

Zero Duty Cycle

Maximum Duty Cycle

Input Bias Current

Soft-Start Section

Soft Start Current

VSHUTDOWN = 0V

Soft Start Voltage

VSHUTDOWN = 2V

Shutdown Input Current

VSHUTDOWN = 2.5V

SG1525A/2525A

SG1527A/2527A

Min Typ Max

37.6 40 42.4

±0.3 ±1

±3 ±6

150

350

1.7 2.0 2.2

3.0 3.5

0.3 0.5 1.0

1.2 2.0 2.8

1.0 2.5

0.5

5

1

10

1

60 75

0.2 0.5

3.8 5.6

60 75

50 60

0

45 49

0.6 0.9

3.3 3.6

0.05 2.0

25 50 80

0.4 0.6

0.4 1.0

SG3525A/SG3527A

Min Typ Max

37.6 40 42.4

±1 ±2

±3 ±6

150

350

1.7 2.0 2.2

3.0 3.5

0.3 0.5 1.0

1.2 2.0 2.8

1.0 2.5

2

10

1

10

1

60 75

0.2 0.5

3.8 5.6

60 75

50 60

0

45 49

0.6 0.9

3.3 3.6

0.05 2.0

25 50 80

0.4 0.6

0.4 1.0

Units

kHz

%

%

Hz

kHz

mA

V

µs

V

mA

mV

µA

µA

dB

V

V

dB

dB

%

%

V

V

µA

µA

V

mA

5

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