SG1524B View Datasheet(PDF) - Microsemi Corporation

Part Name

Description

Manufacturer

SG1524B

REGULATING PULSE WIDTH MODULATOR

Microsemi Corporation 

SG1524B/SG2524B/SG3524B

ELECTRICAL CHARACTERISTICS (continued)

Parameter

Test Conditions

SG1524B/2524B

Min. Typ. Max.

SG3524B

Min. Typ. Max.

Units

Oscillator Section (Note 4)

Initial Accuracy

Voltage Stability

Temperature Stability (Note 7)

Minimum Frequency (Note 7)

Maximum Frequency

Sawtooth Peak Voltage

Sawtooth Valley Voltage

Clock Amplitude

Clock Pulse Width

T

J

=

25°C

VIN = 7V to 40V

Over Operating Range

RT = 150KΩ, CT = 0.1µF

RT = 2KΩ, CT = 470pF

VIN = 40V

VIN = 7V

42 45 48 40 45 50 KHz

0.1 1

0.1 1 %

12

12 %

50 140

50 120 Hz

400 600

400 600

KHz

3.5 3.9

3.5 3.9 V

0.6 1

0.6 1

V

3.0 4.0

3.0 4.0

V

0.2 0.5 1.2 0.2 0.5 1.2 µs

Error Amplifier Section (Note 5)

Input Offset Voltage

Input Bias Current

RS ≤ 2KΩ

Input Offset Current

DC Open Loop Gain

Output Low Level

Output High Level

Common Mode Rejection

Supply Voltage Rejection

Gain-Bandwidth Product (Note 7 )

RL ≥10MΩ

ISINK = 100µA; VPIN 1 - VPIN 2 ≥ 150mV

I

SOURCE

=

100µA;

V

PIN

2

-

V

PIN

1

≥

150mV

VCM = 2.3V to VREF

V = 7V to 40V

IN

TJ = 25°C

P.W.M. Comparator (Note 4)

Minimum Duty Cycle

Maximum Duty Cycle

VCOMP = 0.5V

V = 3.9V

COMP

Current Limit Amplifier Section (Note 6)

0.5 5

15

1

60 78

0.2 0.5

3.8 4.2

70 90

76 100

12

2 10

1 10

1

60 78

0.2 0.5

3.8 4.2

70 90

76 100

12

mV

µA

µA

dB

V

V

dB

dB

MHz

0

0%

45 49

45 49

%

Sense Voltage

Input Bias Current

180 200 220 170 200 230 mV

-3 -10

-3 -10 µA

Shutdown Input Section

HIGH Input Voltage

HIGH Input Current

LOW Input Voltage

V

= 5.0V

SHUTDOWN

2.0

2.0

V

0.1 1

0.1 1 mA

0.6

0.6 V

Output Section (each transistor)

Collector Leakage Current

Collector Saturation Voltage

Emitter Output Voltage

Emitter Voltage Rise Time (Note 7)

Collector Voltage Fall Time

Power Consumption

Standby Current

VCE = 60V

IC = 10mA

IC = 100mA

IE = 10mA

IE = 100mA

RE = 2KΩ, TA = 25°C

RC = 2KΩ, TA = 25°C

VIN = 40V, VSHUTDOWN = 2.0V

50

50 µA

0.2 0.4

0.2 0.4 V

1.0 2.0

1.0 2.0 V

17.5 19

17.5 19

V

17 18

17 18

V

0.2 0.5

0.2 0.5 µs

0.1 0.2

0.1 0.2 µs

5 12

5 12 mA

Note 4. FOSC = 45KHz (RT = 2700Ω, CT = .01µF)

Note 5. VCM = 2.3V to VREF

Note 6. VCM = 0V to 17.5V

Note 7. These parameters, although guaranteed over the recommended operating conditions, are not tested in production.

Rev 1.3a

Copyright  2000

11861 Western Avenue ∞ Garden Grove, CA 92841

3

(714) 898-8121 ∞ FAX: (714) 893-2570

Share Link: