L2800(Old_V) Просмотр технического описания (PDF) - Unisonic Technologies

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Компоненты Описание

производитель

L2800
(Rev.:Old_V)

SWITCHING REGULATOR CONTROLLER(LOW VOLTAGE)

Unisonic Technologies 

UTC L2800

LINEAR INTEGRATED CIRCUIT

Oscillation Frequency vs.Maximum Duty Cycle

100

Vcc=2V

CT=270pF

Ta=+25℃

80

60

40

20

0

10K

100K

1M

Oscillation frequency ,fosc (Hz)

Output Pin Voltage and Current Waveforms (Reference Data)

(V) 2V

6

4

VOUT

2

Vcc=2V

CT=270pF

RT=1.0kΩ

0

(mA)

50

IOUT 0

-50

0

10mV

200ns

0.4

0.8

1.2

1.6

2.0

t

(μs)

Note:The OFF delay time of VOUT depends on

the characteristics of the external transistor.

UTC

Vcc

22μH

UTC L2800 5

IOUT

4

390Ω

VOUT

10μF

(5V)

18kΩ

2kΩ

-IN

Measurement Circuit Diagram

UNISONIC TECHNOLOGIES CO., LTD. 7

QW-R121-010,A

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