LV5769V 查看數據表（PDF） - ON Semiconductor

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LV5769V

1-channel Step-down Switching Regulator

ON Semiconductor 

LV5769V

Recommended Operating Conditions at Ta = 25°C

Parameter

Symbol

Conditions

Supply voltage range

Error amplifier input voltage

Oscillatory frequency

VIN

VFB

FOSC

Ratings

Unit

8.5 to 42

V

0 to 1.6

V

80 to 500 kHz

Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses beyond the Recommended

Operating Ranges limits may affect device reliability.

Electrical Characteristics at Ta = 25°C, VCC = 12V

Parameter

Symbol

Conditions

Reference voltage block

Internal reference voltage

Vref

5V power supply

VDD

Triangular waveform oscillator block

Oscillation frequency

Frequency variation

Oscillation frequency fold back

detection voltage

Oscillation frequency after fold

back

ON/OFF circuit block

FOSC

FOSC DV

VOSC FB

FOSC FB

IC start-up voltage

IC off voltage

Soft start circuit block

VEN on

VEN off

Soft start source current

Soft start sink current

UVLO circuit block

ISS SC

ISS SK

UVLO lock release voltage

UVLO hysteresis

Error amplifier

VUVLO

VUVLO H

Input bias current

Error amplifier gain

Sink output current

Source output current

Current detection amplifier gain

IEA IN

GEA

IEA OSK

IEA OSC

GISNS

over current limiter circuit block

Reference current

Over current detection

comparator offset voltage

Over current detection

comparator common mode

input range

PWM comparator

ILIM

VLIM OFS

Input threshold voltage

(FOSC=125kHz)

Vt max

Vt0

Maximum ON duty

DMAX

Output block

Output stage ON resistance

(the upper side)

Output stage ON resistance

(the under side)

Output stage ON current

(the upper side)

Output stage ON current

(the under side)

RONH

RONL

IONH

IONL

Including offset of E/A

IOUT = 0 to 5mA

RT=220kΩ

VIN = 8.5 to 32V

FB voltage detection after SS ends

EN > 3.5V

EN < 1V, VDD = 5V

FB = 1.0V

FB = 0V

Duty cycle = DMAX

Duty cycle = 0%

Ratings

Unit

min

typ

max

0.654

4.7

0.67

0.686

V

5.2

5.7

V

110

125

1

0.1

1/3FOSC

140 kHz

%

V

kHz

2.5

1.1

4

1000

-10%

-5

VIN-0.45

3.0

1.3

5

2

8

0.7

1400

-100

100

1.5

18.5

3.5

V

1.5

V

6 μA

mA

V

V

100

1800

nA

μA/V

μA

μA

+10% μA

+5 mV

VIN

V

0.9

1.0

1.1

V

0.4

0.5

0.6

V

86

90

95

%

5

Ω

5

Ω

240

mA

240

mA

Continued on next page.

No.A1920-2/9

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