AIC1579 Ver la hoja de datos (PDF) - Analog Intergrations

Número de pieza

componentes Descripción

Fabricante

AIC1579

Step-Down Switching Regulator Controller

Analog Intergrations 

AIC1579/L

ELECTRICAL CHARACTERISTICS (VCC= 12V, Ta=25°C, unless otherwise

specified.)

PARAMETER

TEST CONDITIONS SYMBOL MIN. TYP. MAX. UNIT

VCC Supply Current

Nominal Supply

Power-On Reset

VCC Threshold

Oscillator

Frequency

Max. Duty Cycle

UGATE Open

VOCSET=4.5V

IVCC

2.3

mA

10.4 V

160 200 240 KHz

100 %

Internal Reference Voltage

Reference Voltage

AIC1579

AIC1579L

1.96 2.00 2.04

1.27 1.30 1.33

V

Error Amplifier

DC Gain

Gain-Bandwidth Product

GBW

76

dB

11

MHz

Slew Rate

SR

6

V/µS

Gate Driver

Upper Gate Source

Upper Gate Sink

Protection

OCSET Current Source

SS Current

VOCSET =4.5VDC

RUGATE

RUGATE

8

12

Ω

5.5 10

Ω

IOCSET

170

200

230

µA

ISS

10

µA

TYPICAL PERFORMANCE CHARACTERISTICS

Efficiency vs. Load Current

100

90

Vo=3.5V

OCSET Current vs. Temperature

200

80

Vo=2.0V

198

70

60

Vo=1.3V

196

Tc=134ppm/ C@ 0~100°C

50

40

30

1 2 3 4 IO5UT (A6) 7 8 9 10 11

194

192

-40 -20 0 20 40 60 80 100 120 140 160

Temperature (°C)

4

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