SG1526J/883B 데이터 시트보기 (PDF) - Microsemi Corporation

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SG1526J/883B

REGULATING PULSE WIDTH MODULATOR

Microsemi Corporation 

SG1526/SG2526/SG3526

ELECTRICAL CHARACTERISTICS (continued)

Parameter

Test Conditions

Oscillator Section (Note 4)

Initial Accuracy

Voltage Stability

Temperature Stability (Note 9)

Minimum Frequency (Note 9)

Maximum Frequency

Sawtooth Peak Voltage

Sawtooth Valley Voltage

Error Amplifier Section (Note 5)

T

J

=

25°C

VIN = 8 to 35V

Over Operating TJ

R

T

=

150KΩ,

C

T

=

20µF

RT = 2KΩ, CT = 1.0nF

VIN = 35V

V = 8V

IN

Input Offset Voltage

Input Bias Current

RS ≤ 2KΩ

Input Offset Current

DC Open Loop Gain

RL ≥ 10MΩ, TJ = 25°C

High Output Voltage

VPIN1 - VPIN2 ≥ 150mV, ISOURCE = 100µA

Low Output Voltage

VPIN2 - VPIN1 ≥ 150mV, ISINK = 100µA

Common Mode Rejection

RS ≤ 2KΩ

Supply Voltage Rejection

VIN = 8V to 35V

PWM Comparator Section (Note 4)

Minimum Duty Cycle

Maximum Duty Cycle

V

= 0.4V

COMPENSATION

VCOMPENSATION = 3.6V

Digital Ports (SYNC, SHUTDOWN, and RESET)

HIGH Output Voltage

ISOURCE = 40µA

LOW Output Voltage

HIGH Input Current

ISINK = 3.6mA

V = 2.4V

IH

LOW Input Current

VIL = 0.4V

Current Limit Comparator Section (Note 6)

Sense Voltage

Input Bias Current

RS ≤ 50Ω, TJ = 25°C

Soft-Start Section

Error Clamp Voltage

RESET = 0.4V

CS Charging Current

RESET = 2.4V

Output Drivers (each output) (Note 7)

HIGH Output Voltage

LOW Output Voltage

Collector Leakage

Rise Time

Fall Time

I

= 20mA

SOURCE

ISOURCE = 100mA

ISINK = 20mA

I = 100mA

SINK

VC = 40V

CL = 1000pF

C = 1000pF

L

Power Consumption Section (Note 8)

Standby Current

SHUTDOWN = 0.4V

SG1526/2526

SG3526

Units

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

±3 ±8

±3 ±8 %

0.5 1.0

0.5 1.0 %

7 10

5 10 %

1.0

1.0 Hz

350

350

KHz

3.0 3.5

3.0 3.5 V

0.5 1.0

0.5 1.0

V

25

2 10 mV

-350 -1000

-350 -2000 nA

35 100

35 200 nA

64 72

60 72

dB

3.6 4.2

3.6 4.2

V

0.2 0.4

0.2 0.4 V

70 94

70 94

dB

66 80

66 80

dB

0

0%

45 49

45 49

%

2.4 4

2.4 4

V

0.2 0.4

0.2 0.4 V

-125 -300

-125 -300 µA

-225 -500

-225 -500 µA

90 100 110 80 100 120 mV

-3 -10

-3 -10 µA

0.1 0.4

0.1 0.4 V

50 100 200 50 100 200 µA

12.5 13.5

12.5 13.5

V

12 13

12 13

V

0.2 0.3

0.2 0.3 V

1.2 2

1.2 2 V

50 150

50 150 µA

0.3 0.6

0.3 0.6 µs

0.1 0.2

0.1 0.2 µs

18 30

18 30 mA

Note 3. IL = 0mA

Note 4.

F

OSC

=

40KHz

(R

T

=

4.12KΩ

±1%,

C

T

=

.01µF

±1%,

R

D

=

0Ω)

Note 5. VCM = 0 to 5.2V

Note 6. VCM = 0 to 12V

Note 7. VC = 15V

Note 8. V = 35V

IN

Note 9. These parameters, although guaranteed over the recom-

mended operating conditions, are not tested in production.

Rev 1.1a

Copyright © 1994

11861 Western Avenue ∞ Garden Grove, CA 92841

3

(714) 898-8121 ∞ FAX: (714) 893-2570

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