FAN53541UCX データシートの表示（PDF） - ON Semiconductor

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FAN53541UCX

2.4 MHz, 5 A TinyBuck™ Synchronous Buck Regulator

ON Semiconductor 

Electrical Characteristics

Minimum and maximum values are at VIN=2.7 V to 5.5 V, and TA=-40°C to +85°C, unless otherwise noted. Typical values are

at TA=25°C, VIN=5 V, and VOUT=1.2 V.

Symbol

Power Supplies

Parameter

IQ Quiescent Current

I SD Shutdown Supply Current

VUVLO Under-Voltage Lockout Threshold

VUVHYST Under-Voltage Lockout Hysteresis

Logic Pins

VIH High-Level Input Voltage

VIL Low-Level Input Voltage

VLHYST Logic Input Hysteresis Voltage

IIN Input Bias Current

IOUTL PGOOD Pull-Down Current

IOUTH PGOOD HIGH Leakage Current

VOUT Regulation

VREF

Output Reference DC Accuracy,

Measured at FB Pin

VOUT

ILOAD

Load Regulation

VOUT

VIN

Line Regulation

IREF FB Pin Leakage Current

VOUT Transient Response

Power Switch and Protection

RDS(ON)P P-Channel MOSFET On Resistance

RDS(ON)N N-Channel MOSFET On Resistance

ILIMPK P-MOS Peak Current Limit

TLIMIT Thermal Shutdown

THYST Thermal Shutdown Hysteresis

VSDWN Input OVP Shutdown

Frequency Control

fSW Oscillator Frequency

fMODE MODE Pin Synchronization Range

Soft-Start and Output Discharge

tSS

Regulator Enable to Regulated VOUT

(Rising PGOOD)

RDIS Output Discharge Resistance

Condition

Min. Typ. Max. Unit

ILOAD=0, MODE=0 (AUTO PFM/PWM)

ILOAD=0, MODE=1 (Forced PWM)

EN=GND

VIN Rising

VIN Falling

15

50 200 µA

8

30 100 mA

0.1 10 µA

2.67 2.80 V

2.1 2.3

V

365

mV

Input Tied to GND or 1 kΩ Resistor to VIN

VPGOOD=0.4 V

VPGOOD=VIN

1.05

1

140

0.01

0.01

V

0.4 V

mV

1.00 µA

mA

1.00 µA

TA=25°C, Forced PWM

TA=-40°C to 85°C, Forced PWM

AUTO PFM/PWM

MODE=VIN (Forced PWM)

0.792 0.800 0.808 V

0.787 0.800 0.813 V

0.784 0.800 0.824 V

–0.02

%/A

2.7 V ≤ VIN ≤ 5.5 V, IOUT(DC)=1.5 A

FB=0.8 V

ILOAD Step 0.1 A to 1.5 A, tR=100 ns

-0.16

%/V

1

nA

-30

mV

Open Loop

Closed Loop

Rising Threshold

Falling Threshold

33

mΩ

28

mΩ

5.8 7.5 8.8 A

8

A

155

°C

20

°C

6.1

V

5.5 5.8

V

External Square-Wave, 30% to 70% Duty

Cycle

2.1 2.4 3.0 MHz

525 600 700 kHz

EN=0 V

1.2

ms

175

Ω

© 2013 Semiconductor Components Industries, LLC.

FAN53541 • Rev. 1.1

5

www.fairchildsemi.com

www.onsemi.com

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