MB3821 データシートの表示（PDF） - Fujitsu

部品番号

コンポーネント説明

メーカー

MB3821

2-ch DC/DC Converter IC With Synchronous Rectifier

Fujitsu 

MB3821

(Continued)

Parameter

Threshold voltage

VT temperature stability

Input bias current

Voltage gain

Frequency bandwidth

Output voltage

Output source current

Output sink current

Threshold voltage

Symbol

Pin

No.

Conditions

VTH 6,19 FB = 1.6 V

∆VT

/VT

6,19 Ta = –30°C to +85°C

IB 5,20 −IN = 0 V

AV 6,19 DC

BW 6,19 AV = 0 dB

VOH 6,19

—

VOL

ISOURCE

ISINK

6,19

—

6,19 FB = 1.6 V

6,19 FB = 1.6 V

VTL 8,11 Duty cycle = 0 %

VTH 14,17 Duty cycle = Dtr

(VCC = 16 V, SEL =0 V, Ta = +25°C)

Min.

Value

Typ.

Unit

Max.

1.235 1.260 1.285 V

—

0.5*

—%

–200

60

—

VREF –

0.3

—

—

1.5

1.2

–50

100

800*

—

0.8

–90

6.0

1.3

— nA

— dB

— kHz

—

V

1.0 V

–45 µA

— mA

—

V

—

1.9

2.0 V

Maximum duty cycle

SEL = 0 V 85

90

95 %

Dtr

8,11, CT = 500 pF

14,17 RT = 10 kΩ

SEL = 5 V 89

94

99 %

Output voltage

(Main side)

VOH

8,17

VS = 16 V

IO = –30 mA

CB –

1.4

CB = 22 V

VOL 8,17

IO = 30 mA —

Output voltage

(Synchronous rectifier side)

Diode voltage

CTL input voltage

VOH

VOL

VDIODE

VIH

VIL

11,14 IO = –30 mA

11,14 IO = 30 mA

13 IO = 10 mA

18 IC active mode

18 IC standby mode

Input current

ICTL

18 CTL = 5 V

Standby current

Power supply current

ICCS

23 CTL = 0 V

23

SEL = 0 V

(Normal mode)

ICC

23

SEL = 5 V

(Low power mode)

*: Standard design value.

VB –

1.4

—

—

2.0

—

—

—

—

—

CB –

1.1

VS +

1.1

VB –

1.1

0.1

1.0

—

—

50

—

5.2

1.0

—

V

VS +

1.4

V

—

V

0.5 V

1.1 V

—

V

1.0 V

80 µA

10 µA

7.8 mA

1.5 mA

7

Share Link: