CP34063 datasheet(3/10 Pages) CERAMATE

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CP34063

1.5A,Step-Up/Down/Inverting Switching Regulators

* All specs and applications shown above subject to change without prior notice.

1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU ,

TAOYUAN, TAIWAN

Email: server@ceramate.com.tw

ELECTRICAL CHARACTERISTICS (VCC = 5.0 V, TA = Tlow to Thigh [Note 4], unless otherwise specified.)

Characteristics

Symbol

Min

Typ

Max

Unit

OSCILLATOR

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

fosc

kHz

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

Ichg

µA

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

Idischg

140

220

260

µA

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)

250

300

350

OUTPUT SWITCH (Note 5)

Saturation Voltage, Darlington Connection

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

VCE(sat)

–

1.0

1.3

Saturation Voltage (Note 6)

(ISW = 1.0 A, RPin 8 = 82 Ω to VCC, Forced β ] 20)

VCE(sat)

–

0.45

0.7

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

hFE

120

–

Collector Off–State Current (VCE = 40 V)

IC(off)

–

0.01

100

µA

COMPARATOR

Threshold Voltage

TA = 25°C

TA = Tlow to Thigh

Vth

1.225

1.21

1.25

–

1.27

1.29

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

Regline

–

1.4

5.0

Input Bias Current (Vin = 0 V)

IIB

–

–40

–400

TOTAL DEVICE

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

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

ICC

–

2.5

4.0

5. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient temperature as possible.

6. If the output switch is driven into hard saturation (non–Darlington configuration) at low switch currents (

≤ 300 mA) and high driver currents

(

≥ 30 mA), it may take up to 2.0 µs for it to come out of saturation. This condition will shorten the off time at frequencies ≥ 30 kHz, 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 recommended:

Forced

b of output switch :

IC output

IC driver – 7.0 mA *

w 10

* The 100

Ω resistor in the emitter of the driver device requires about 7.0 mA before the output switch conducts.

4. Tlow = 0°C for CP34063

Tel:886-3-3214525

Http: www.ceramate.com.tw

Fax:886-3-3521052

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Rev 1.

1 Jul.18,2003

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