34063CM データシートの表示（PDF） - BCD Semiconductor

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34063CM

0.8A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER

BCD Semiconductor 

Preliminary Datasheet

0.8A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER

AZ34063C

Electrical Characteristics

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

Parameter

Symbol

Conditions

Min Typ Max Unit

OSCILLATOR

Frequency

fOSC

VPin 5 = 0 V,

CT = 1.0 nF 30 38 45 KHz

TA = 25oC

CT = 330 pF 75 88 100 KHz

Charge Current

ICHG

VCC = 5.0 V to 36 V, TA = 25oC 30 38 45 PA

Discharge Current

IDISCHG VCC = 5.0 V to 36 V, TA = 25oC 180 240 290 PA

Discharge to Charge IDISCHG/ICHG Pin 7 to VCC, TA = 25oC

Current Ratio

5.2 6.5 7.5

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

OUTPUT SWITCH (Note 3)

Saturation Voltage,

Dalington Connection

VCE(sat) ISW = 0.8 A,

Pins 1, 8 connected

Saturation Voltage (Note 4)

DC Current Gain

Collector Off-State Current

COMPARATOR

VCE(sat)

hFE

IC(off)

ISW = 0.8 A, RPin 8 = 82 : to

VCC, Forced E = 20

ISW = 0.8 A,

VCE = 5.0 V,

VCE = 36 V

Threshold Voltage

Threshold Voltage Line

Regulation

VTH

REGLINE

TA = 25oC

TA = -40 to 85oC

VCC = 3.0 V to 36 V

250 300 350 mV

1.0 1.3 V

0.45 0.8 V

50 75

0.01 100 PA

1.225 1.250 1.275 V

1.21

1.29

1.4 5 mV

Input Bias Current

TOTAL DEVICE

Supply Current

IIB

VIN = 0 V

ICC

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

Pin 7 = VCC, VPin 5 > VTH,

Pin 2 = 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 (d 300mA) and

high driver currents (t 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:

Apr. 2005 Rev. 1. 2

BCD Semiconductor Manufacturing Limited

5

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