NTE7159 데이터 시트보기 (PDF) - NTE Electronics

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NTE7159

Integrated Circuit Switch Mode Power Supply Controller

NTE Electronics 

Electrical Characteristics (Cont’d): (TA = +25°C, VCC = 12V unless otherwise specified)

Parameter

Symbol

Test Conditions

Min Typ Max Unit

Current Limitation Section

First Current Limitation Threshold

Second Current Limitation Threshold

Thresholds Difference

Lock–Out Threshold on Pin2

Capacitor C2 Discharge Current

Capacitor C2 Charge Current

Maximum Input Bias Current

VIM1

VIM2

∆VIM

VC2

IDC2

ICC2

IBI(max)

VIM2 – VIM1

Pin3

558 600 642 mV

837 900 963 mV

– 300 – mV

2.25 2.55 2.85 V

– 10 – µA

– 45 – µA

– 0.2 – µA

Pin Connection Diagram

Transformer Demagnetizatin

Sensing Input

1

Secondary Pulses Input 2

Power Transistor Current

Limitation Input

3

GND 4

16 Power Supply

15 Positive Output Stage Supply

14 Power Output

13 GND

GND 5

12 GND

Error Amplifier Input (Inverting) 6

11 Oscillator Resistor

Error Amplifier Output 7

10 Oscillator Capacitor

Overload Integration Capacitor 8

9 Soft–Start Capacitor

16

9

1

8

.787 (20.0) Max

.201

(5.1)

.100 (2.54) .130 (3.3) Min

.280 (7.1)

.335 (8.5)

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