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34063AM

1.5A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER

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Data Sheet

1.5A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER AZ34063A

Electrical Characteristics

(VCC=5.0 V, TA=-40 to 85oC, unless otherwise specified.)

Parameter

Symbol

Conditions

OSCILLATOR

Frequency

fOSC

VPIN5=0V, CT=1.0nF

TA=25oC

Charge Current

ICHG

VCC=5.0V to 36V, TA=25oC

Discharge Current

IDISCHG VCC=5.0V to 36V, TA=25oC

Discharge to Charge Current

Ratio

IDISCHG/ICHG

Pin 7 to VCC, TA=25oC

Min Typ Max Unit

30 38 45 KHz

30 38 45 µA

180 240 290 µA

5.2 6.5 7.5

Current Limit Sense Voltage VIPK(sense) ICHG=IDISCHG, TA=25oC

OUTPUT SWITCH (Note 3)

Saturation Voltage,

Dalington Connection

VCE(sat)

ISW=1.0A, Pins 1, 8 connected,

Common Emitter

Saturation Voltage (Note 4.)

VCE(sat)

ISW=1.0A, RPIN8=82Ω to VCC,

Forced β=20, Common Emitter

DC Current Gain

Collector Off-State Current

COMPARATOR

Threshold Voltage

Threshold Voltage Line

Regulation

hFE

IC(off)

ISW=1.0A, VCE=5.0V,

TA=25oC

VCE=36V

VTH

REGLINE

TA=25oC

TA=-40 to 85oC

VCC=3.0V to 36V

250 300 350 mV

1.0 1.3 V

0.45 0.7 V

50 75

0.01 100 µA

1.225 1.250 1.275

1.21 1.250 1.29 V

1.4 5 mV

Input Bias Current

TOTAL DEVICE

Supply Current

IIB

VIN=0V

VCC=5.0V to 36V, CT=1.0nF,

ICC

VPIN7=VCC, VPIN5 > VTH,

VPIN2=GND, other pins open

-20 -400 nA

4 mA

Note 3: Low duty cycle pulse technique are used during test to maintain junction temperature as close to ambient temperature

as possible.

Note 4: If the output switch is driven into hard saturation (non-Darlington configuration) at low switch currents (≤ 300mA) and

high driver currents (≥ 30mA), it may take up to 2.0us for it to come out of saturation. This condition will shorten the off time

at frequencies 30KHz, and is magnified at high temperatures. This condition does not occur with a Darlington configuration,

since the output switch cannot saturate. If a non-Darlington configuration is used, the following output drive condition is rec-

ommended:

Sep. 2006 Rev. 1. 3

BCD Semiconductor Manufacturing Limited

5

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