MB3789 Просмотр технического описания (PDF) - Fujitsu

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Компоненты Описание

производитель

MB3789

Switching Regulator Controller

Fujitsu 

MB3789

s ABSOLUTE MAXIMUM RATINGS

Parameter

Symbol

Condition

Rating

Min.

Max.

(Ta = +25°C)

Unit

Power supply voltage

VCC

—

—

20

V

Power dissipation

Operating temperature

Storage temperature

PD

Ta +25°C

—

Top

—

–30

Tstg

—

–55

440*

mW

+85

°C

+125

°C

* : When mounted on a 10 cm-square double-side epoxy board.

WARNING: Semiconductor devices can be permanently damaged by application of stress (voltage, current,

temperature, etc.) in excess of absolute maximum ratings. Do not exceed these ratings.

s RECOMMENDED OPERATING CONDITIONS

Parameter

Power supply voltage

Reference voltage output

current

Error amp. input voltage

Output current

Timing resistance

Timing capacitance

Oscillation frequency

Operating temperature

Symbol

Condition

VCC1

VCC2

IOR

VI

IO+

IO–

RT

CT

fOSC

TOP

—

—

—

CB = 4700 pF, t 2 µs

CB = 4700 pF, t 2 µs

—

—

—

—

Min.

3.0

—

–50

–0.2

–70

—

10

470

1

–30

Value

Typ.

5.0

6.0

–30

—

–40

40

39

1000

20

+25

(Ta = +25°C)

Unit

Max.

18

V

18

V

—

µA

VCC – 1.8 V

—

mA

70

mA

200

kΩ

6800

pF

200

kHz

+85

°C

WARNING: The recommended operating conditions are required in order to ensure the normal operation of the

semiconductor device. All of the device’s electrical characteristics are warranted when the device is

operated within these ranges.

Always use semiconductor devices within their recommended operating condition ranges. Operation

outside these ranges may adversely affect reliability and could result in device failure.

No warranty is made with respect to uses, operating conditions, or combinations not represented on

the data sheet. Users considering application outside the listed conditions are advised to contact their

FUJITSU representatives beforehand.

7

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