APW7077 datasheet(4/21 Pages) ANPEC

4 / 21 page

Rev. A.4 - Sep, 2005

APW7077/A

www.anpec.com.tw

Electrical Characteristics

APW7077A

Symbol

Parameter

Test Condition

Min

Typ

Max

Unit

Step-Up Section

VIN

Minimum Operating Input

Voltage

VOUT = VDD

0.9

VDD

Operating Voltage

VIN = VDD

1.9

5.5

Start-up Voltage

Io<10mA, VOUT = VDD (<5.5V)

0.9

VOUT = 12V, Io<10mA, VDD = VIN

1.9

2.0

fSW

Operating Frequency

VDD = 3.3V, VFB = 0.5V

270

300

330

KHZ

Oscillator Frequency Line

Regulation

2.0V<VDD<5.5V

±1.2

DMAX

Maximum Duty Cycle

VFB = 0.5V

Maximum Duty Line Regulation 2.0V<VDD<5.5V

±0.5

Power MOSFET

ISOURCE EXT Output Source Current

Duty

≤5%, EXT = V

DD-0.4V

-70

-110

-150

ISINK

EXT Output Sink Current

Duty

≤5%, EXT = 0.4V

120

160

Control Section

Output Voltage Range

External Divider

2.0

VFB

Feedback Voltage

ILOAD = 0mA

0.98

1.02

Feedback Voltage Line

Regulation

2.0V<VDD<5.5V

±0.1

IFB

Feedback Input Current

VFB = 1.4V

0.03

TSS

Soft-start Time

Soft-start Threshold Voltage

Duty = 50%

1.65

Soft-start Hysteresis Voltage

150

VDD = VCE = 3.3V, VFB = 0.5V

150

230

µA

Operating Current

VDD = VCE = 3.3V, VFB = 1.1V

100

150

µA

IOFF

Stand-by Current

VDD = VCE = 3.3V, VFB = 1.3V

µA

Switch-off Current

VDD = 3.3V, VCE = 0V

µA

VCE

Logic LOW (VIL)

0.7

Logic HIGH(VIH)

1.2

ICE

CE Pin Input Current

VCE = 0V

µA

VCE = 3.3V

0.07

(for all values TA = 25

°C, VOUT= 3.3V, unless otherwise noted)

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