3843D-N 데이터 시트보기 (PDF) - Unspecified

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3843D-N

Fixed Frequency Current Mode PWM Controller.

Unspecified 

HY3842/43/44/45

Electrical characteristics (*VCC=15V, RT=10kΩ, CT=3.3nF, TA=00C to +700C, unless otherwise specified)

Characteristics

Symbol

Test Condition

Min

Typ

Max

Reference Section

Reference Output Voltage

VREF

TJ = 25°C, IREF = 1 mA

4.9

5.0

5.1

Line Regulation

∆VREF

12V ≤ VCC ≤ 25 V

6.0

20

Load Regulation

∆VREF

1 mA ≤ IREF ≤ 20mA

6.0

25

Short Circuit Output Current

ISC

TA = 25°C

-100

-180

Oscillator Section

Oscillation Frequency

Frequency Change with Voltage

Oscillator Amplitude

f

∆f/∆VCC

V(OSC)

TJ = 25°C

12V ≤ VCC ≤ 25 V

(peak to peak)

47

52

57

0.05

1.0

1.6

Error Amplifier Section

Input Bias Current

IBIAS

VFB=3V

-0.1

-2

Input Voltage

VI(E.A)

Vpin1 = 2.5V

2.42

2.5

2.58

Open Loop Voltage Gain

Unity Gain Bandwidth

Power Supply Rejection Ratio

AVOL

UGBW

PSRR

2V ≤ V0 ≤ 4V

Tj=250C, Note 3

12V ≤ VCC ≤ 25 V

65

90

0.5

0.6

60

70

Output Sink Current

ISINK

Vpin2 = 2.7V, Vpin1 = 1.1V

2

7

Output Source Current

High Output Voltage

Low Output Voltage

ISOURCE

VOH

VOL

Vpin2 = 2.3V, Vpin1 = 5V

Vpin2 = 2.3V, RL = 15KΩ to GND

Vpin2 = 2.7V, RL = 15KΩ to PIN 8

-0.5

-1.0

5.0

6.0

0.8

1.1

Current Sense Section

Gain

GV

(Note 1 & 2)

2.85

3.0

3.15

Maximum Input Signal

Supply Voltage Rejection

VI(MAX)

SVR

V pin1 = 5V (Note1)

12V ≤ VCC ≤ 25 V (Note 1)

0.9

1.0

1.1

70

Input Bias Current

IBIAS

Vpin3 = 3V

-3.0

-10

Output Section

Low Output Voltage

VOL

ISINK = 20 mA

ISINK = 200 mA

0.08

0.4

1.4

2.2

High Output Voltage

VOH

ISINK = 20 mA

ISINK = 200 mA

13

13.5

12

13.0

Rise Time

tR

TJ = 25°C, CL = 1nF (Note 3)

45

150

Fall Time

tF

TJ = 25°C, CL = 1nF (Note 3)

35

150

Undervoltage Lockout Section

Start Theshold

VTH(ST)

HY3842D-N/44D-N

14.5

16.0

17.5

HY3843D-N/45D-N

7.8

8.4

9.0

Min. Operating Voltage

VOPR(min) HY3842D-N/44D-N

8.5

10

11.5

(After Turn On)

HY3843D-N/45D-N

7.0

7.6

8.2

PWM Section

Max. Duty Cycle

D(MAX)

HY3842D-N/43D-N

95

97

100

HY3844D-N/45D-N

47

48

50

Min. Duty Cycle

D(MAX)

0

Total Standby Current

Start−Up Current

HY3843D-N, HY3845D-N

IST

HY3842D-N, HY3844D-N

0.17

0.3

0.17

0.3

Operating Supply Current

ICC (OPR)

Vpin3 = Vpin2 = 0V

Zener Voltage

VZ

ICC=25 mA

* Adjust VCC above the start threshold before setting it to 15V.

Note 1: Parameter measured at trip point of latch with Vpin2=0.

Note 2: Gain defined as A=∆Vpin1/∆Vpin3 ; 0 ≤ Vpin3 ≤ 0.8V.

Note 3: These parameters, although guaranteed, are not 100% tested in production.

13

17

30

38

Unit

V

mV

mA

KHz

%

V

µA

V

dB

MHz

dB

mA

mA

V

V/V

V

dB

µA

V

nS

V

V

%

mA

V

2

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