Fujitsu MB39A104 manual Electrical Characteristics, Parameter, Pin No, Conditions, Unit, Continued

MB39A104

■ ELECTRICAL CHARACTERISTICS

(VCC = VCCO = 12 V, VREF = 0 mA, Ta = +25 °C)

Parameter

Symbol

Pin No

Conditions

Value

Unit

Min

Typ

Max

Output voltage

VREF

17

Ta = +25 °C

4.95

5.00

5.05

V

1.Reference

Output voltage

ΔVREF/

17

Ta = 0 °C to +85 °C



0.5*



%

block [REF]

temperature

voltage

VREF

variation

Input stability

Line

17

VCC = 7 V to 19 V



3

10

mV

Load stability

Load

17

VREF = 0 mA to −1 mA



1

10

mV

Short-cuircuit

IOS

17

VREF = 1 V

−50

−25

−12

mA

output current

voltage lockout

protection circuit

block [UVLO]

Threshold

VTLH

17

VREF =

2.6

2.8

3.0

V

2.Under

voltage

VTHL

17

VREF =

2.4

2.6

2.8

V

Hysteresis

VH

17





0.2 *



V

width

3.Short-circuit

detection block

[SCP Logic]

Threshold

VTH

8



0.68

0.73

0.78

V

voltage

Input source

ICSCP

8



−1.4

−1.0

−0.6

∝A

current

Reset voltage

VRST

17

VREF =

2.4

2.6

2.8

V

4.Short-circuit

detection block

[SCP Comp]

Threshold

VTH

8



2.8

3.1

3.4

V

voltage

5.Triangular

wave oscillator

block [OSC]

Oscillation

fOSC

13

CT = 100 pF, RT = 24 kΩ

450

500

550

kHz

frequency

Frequency

ΔfOSC/

13

Ta = 0 °C to +85 °C



1*



%

temperature

fOSC

variation

6.Soft-

start

block

[CS1, CS2]

Charge current

ICS

11, 14

CS1 = CS2 = 0 V

−14

−10

−6

∝A

7.Error amplifier

[Error Amp1,

Error Amp2]

Threshold

VTH

9, 16

FB1 = FB2 = 2 V

1.227

1.240

1.253

V

voltage

bolck

Input bias

IB

10, 15

−INE1 = −INE2 = 0 V

−120

−30



nA

current

Voltage gain

AV

9, 16

DC



100*



dB

(Continued)

6