NTE1729 datasheet(2/4 Pages) NTE | Integrated Circuit Pulse Width Modulator (PWM) Control Circuit

2 page

Electrical Characteristics: (VCC = +15V, f = 10kHz, –20° ≤ TA ≤ +70°C, unless otherwise specified)

Parameter

Symbol

Test Conditions

Min

Typ

Max

Unit

Reference Section

Output Voltage

Vref

Iref = 1mA, TA = +25°C

4.75

5.0

5.25

Line Regulation

REGIN

≤ VCC ≤ 40V, Iref = 1mA,

TA = +25°C

–

Load Regulation

REGL

1mA

≤ Iref ≤ 10mA, TA = +25°C

–

Temperature Coefficient

Vref

–20

° ≤ TA ≤ +85°C, Iref = 1mA

–

0.01

0.03

°C

Short–Circuit Output Current

Ishort

Vref = 0, TA = +25°C, Note 2

–

Oscillator Section

Frequency

fOSC

CT = 0.01µF, RT = 12kΩ, TA = +25°C

–

kHz

Standard Deviation of Frequency

≤ VCC ≤ 40V, CT, RT, Const.,

TA = +25°C, Note 1

–

Frequency Change with Temperature

° ≤ TA ≤ +70°C, CT = 0.01µF,

RT = 12kΩ

–

Frequency Change with Voltage

≤ VCC ≤ 40V, CT = 0.01µF,

RT = 12kΩ, TA = +25°C

–

Dead–Time Control Section

Input Bias Current

≤ VI ≤ 5.25V

–

–2

–10

µA

Maximum Duty Cycle (Each Output)

VI = 0

–

Input Threshold Voltage

Vth

Zero Duty Cycle

–

3.0

3.3

Maximum Duty Cycle

–

Error Amplifier Section

Input Offset Voltage

VIO

VOAMP = 2.5V

–

Input Offset Current

IIO

VOAMP = 2.5V

–

250

Input Bias Current

VOAMP = 2.5V

–

0.2

1.0

Common Mode Input

Low

VICM

≤ VCC ≤ 40V

–0.3

–

Voltage

High

VCC–2

–

Open–Loop Voltage Amplification

VOAMP = 0.5V to 3.5V, TA = +25°C

–

Unity Gain Bandwidth

TA = +25°C

500

830

–

kHz

Common Mode Rejection Ratio

CMRR

VCC = 40V, TA = +25°C

–

Output Sink Current

VOAMP = 0.7V

0.3

0.7

–

Output Source Current

VOAMP = 3.5V

–2

–10

–

PWM Section

Input Threshold Voltage

Zero Duty Cycle

–

4.0

4.5

Input Sink Current

V(Pin3) = 0.7V

0.3

0.7

–

Output Section

Collector Cutoff Current

ICER

VCE = 40V, VCC = 40V

–

100

µA

Emitter Cutoff Current

VCC = VC = 40V

–

–100

µA

Collector Saturation Voltage

VCE(sat) IC = 200mA, VE = 0, Common Emitter

0.95

1.3

VCE(on)

IE = 200mA, VC = 15V, Emitter Follower

–

1.6

2.5

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