78LXX

LINEAR INTEGRATED CIRCUIT

UNISONICTECHNOLOGIESCO.,LTD

6 of 9

www.unisonic.com.tw

QW-R101-001.AB



ELECTRICAL CHARACTERISTICS (Cont.)

For UTC78L15

(VIN=23V, IOUT=40mA, 0°C<TJ<150°C, C1=0.33μF, Co=0.1μF, unless otherwise specified)

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Output Voltage

VOUT

TJ=25°C

14.70

15

15.30

V

17.5V≤VIN≤30V, IOUT=1mA-40mA

14.55

15.45

V

17.5V≤VIN≤VMAX, IOUT=1mA-70mA

14.55

15.45 V(note 2)

Load Regulation

VOUT

TJ=25°C, IOUT=1mA-100mA

25

150

mV

TJ=25°C, IOUT=1mA-40mA

15

75

mV

Line Regulation

VOUT

17.5V≤VIN≤30V, TJ=25°C

25

150

mV

20V≤VIN≤30V, TJ=25°C

15

75

mV

Quiescent Current

IQ

VIN=23V,IOUT=0mA,TJ=25°C

2.2

6.5

mA

Quiescent Current Change

IQ

20V≤VIN≤30V

1.5

mA

1mA≤IOUT≤40mA

0.1

mA

Output Noise Voltage

eN

10Hz≤f≤100kHz

90

μV

Temperature Coefficient of VOUT

VO/T IOUT=5mA

2.0

mV/

C

Ripple Rejection

RR

18.5V≤VIN≤28.5V, f=120Hz, TJ=25°C

45

dB

Dropout Voltage

VD

TJ=25°C

1.7

V

For UTC78L18

(VIN=27V, IOUT=40mA, 0°C<TJ<150°C, C1=0.33μF, Co=0.1μF, unless otherwise specified)

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Output Voltage

VOUT

TJ=25°C

17.64

18

18.36

V

21V≤VIN≤33V, IOUT=1mA-40mA

17.46

18.54

V

21V≤VIN≤VMAX, IOUT=1mA-70mA

17.46

18.54 V(note 2)

Load Regulation

VOUT

TJ=25°C, IOUT=1mA-100mA

30

180

mV

TJ=25°C, IOUT=1mA-40mA

20

90

mV

Line Regulation

VOUT

21V≤VIN≤33V, TJ=25°C

45

300

mV

22V≤VIN≤33V, TJ=25°C

35

250

mV

Quiescent Current

IQ

VIN=27V, IOUT=0mA, TJ=25°C

2.2

6.5

mA

Quiescent Current Change

IQ

21V≤VIN≤33V

1.5

mA

1mA≤IOUT≤40mA

0.1

mA

Output Noise Voltage

eN

10Hz≤f≤100kHz

150

μV

Temperature Coefficient of VOUT

VO/T IOUT=5mA

2.2

mV/

C

Ripple Rejection

RR

23V≤VIN≤33V, f=120Hz, TJ=25°C

45

dB

Dropout Voltage

VD

TJ=25°C

1.7

V

For UTC78L24

(VIN=33V, IOUT=40mA, 0°C<TJ<150°C, C1=0.33μF, Co=0.1μF, unless otherwise specified)

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Output Voltage

VOUT

TJ=25°C

23.52

24

24.48

V

27V≤VIN≤38V, IOUT=1mA-40mA

23.28

24.72

V

27V≤VIN≤VMAX, IOUT=1mA-70mA

23.28

24.72 V(note 2)

Load Regulation

△

VOUT

TJ=25°C, IOUT=1mA-100mA

41

240

mV

TJ=25°C, IOUT=1mA-40mA

28

120

mV

Line Regulation

△

VOUT

27V≤VIN≤38V, TJ=25°C

160

300

mV

28V≤VIN≤38V, TJ=25°C

150

250

mV

Quiescent Current

IQ

VIN=33V, IOUT=0mA, TJ=25°C

2.2

6.0

mA

Quiescent Current Change

IQ

27V≤VIN≤38V

1.5

mA

1mA≤IOUT≤40mA

0.1

mA

Output Noise Voltage

eN

10Hz≤f≤100kHz

200

μV

Temperature Coefficient of VOUT

VO/T IOUT=5mA

-2.0

mV/

C

Ripple Rejection

RR

27V≤VIN≤38V, f=120Hz, TJ=25°C

45

dB

Dropout Voltage

VD

TJ=25°C

1.7

V

Notes: 1. The Maximum steady state usable output current is dependent on input voltage, heat sinking, lead length

of the package and copper pattern of PCB.

2. Power dissipation<0.5W.