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

9a. External NPN Switch

9b. External NPN Saturated Switch

(See Note 8)

8

7

6

1

2

R

R ³ 0 for

8. 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 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.

8

7

6

1

2

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Http: www.ceramate.com.tw

Fax:886-3-3521052

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1 Jul.18,2003