B3845AP 查看數據表（PDF） - Bay Linear

零件编号

产品描述 (功能)

生产厂家

B3845AP

Current Mode PWM Controller

Bay Linear 

B384X

Electrical Characteristics

(VCC = 15V;RT = 10Ω, CT = 3.3nF, TA=0 °C to +70°C, unless otherwise specified)

Parameter

Symbol Conditions

MIN

CURRENT SENSE SECTION

Gain

GV

(Note 1 & 2)

2.85

Maximum input Signal

VI(MAX) V1 = 5V (Note 1)

0.9

Power Supply Rejection

Ratio

PSRR 12V≤VCC≤25V

Input Bias Current

IBIAS

UNDER-VOLTAGE LOCKOUT SECTION

Start Threshold

VTH(ST)

B3842/B3844

B3843/B3845

14.5

7.8

Min-Operating Voltage

(after Turn On)

VOPR(MIN)

B3842/B3844

B3843/B3845

8.5

7.0

PWM SECTION

Max Duty Cycle

D(MAX) B3842/B3844

B3843/B3845

95

47

Min Duty Cycle

D (MIN)

-

TOTAL STANDBY CURRENT

Start-Up Current

IST

B3842A/43A/44A/45A

B3842A1/43A1/44A1/45A1

-

Operating Supply Current ICC(OPR) V3=V2=ON

-

Zener Voltage

VZ

ICC

30

TYP MAX UNIT

3

3.15 V/V

1

1.1

V

70

-

dB

-3

-10

µA

16

17.5

V

8.4

9

10

11.5

V

7.6

8.2

97

48

100

50

%

-

0

%

0.17

0.3

mA

0.45

1

14

17

mA

38

-

V

Block Diagram

Bay Linear, Inc 2478 Armstrong Street, Livermore, CA 94550 Tel: (925) 989-7144, Fax: (925) 940-9556

www.baylinear.com

Share Link: