AP34063 datasheet(3/11 Pages) DIODES

3 / 11 page

AP34063

UNIVERSAL DC/DC CONVERTER

AP34063 Rev. 2

3 of 11

MARCH 2007

www.diodes.com

Electrical Characteristics ( V

CC = 5.0V, unless otherwise specified.)

Characteristics

Symbol

Min

Typ

Max

Unit

OSCILLATOR

Frequency (VPin 5 = 0V, CT = 1.0nF, TA = 25°C)

fosc

kHz

Charge Current (VCC = 5.0V to 40V, TA = 25°C)

Ichg

Discharge Current (VCC = 5.0V to 40V, TA = 25°C)

Idischg

140

200

260

Discharge to Charge Current Ratio (Pin 7 to VCC, TA = 25°C)

Idischg / Ichg

5.2

6.5

7.5

Current Limit Sense Voltage (Ichg = Idischg, TA = 25°C)

Vipk (sense)

300

400

450

OUTPUT SWITCH (Note 3)

Saturation Voltage, Darlington Connection

(ISW = 1.0A, Pins 1,8 connected)

VCE (sat)

1.0

1.3

Saturation Voltage, Darlington Connection

(ISW = 1.0A, ID = 50mA, Forced ß ≈ 20)

VCE (sat)

0.45

0.7

DC Current Gain (ISW = 1.0A, VCE = 5.0V, TA = 25°C)

hFE

Collector Off-State Current (VCE = 40V)

IC (off)

0.01

100

COMPARATOR

Vth

1.225

1.25

1.275

Threshold Voltage

TA = 25°C

TA = 0

oC ~ 70oC

1.21

1.29

Threshold Voltage Line Regulation (VCC = 3.0V to 40V)

Regline

1.4

6.0

TOTAL DEVICE

Supply Current (VCC = 5.0V to 40V, CT =1.0nF, Pin 7 = VCC,

VPin 5 > Vth Pin 2 = Gnd, remaining pins open)

ICC

3.5

1.25V

Reference

Regulator

Ipk

Oscillator

100

Comparator

(Bottom View)

Gnd

Timing

Capacitor

Switch

Emitter

Switch

Collector

Drive

Collector

Ipk

Sense

VCC

Comparator

Inverting

Input

Representative Schematic Diagram

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