FAN5350 データシートの表示（PDF） - Fairchild Semiconductor

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FAN5350

3MHz, 600mA Step-Down DC-DC Converter in Chip-Scale and MLP Packaging

Fairchild Semiconductor 

Electrical Characteristics

Minimum and maximum values are at VIN = 2.7V to 5.5V, TA = -40°C to +85°C, CIN = COUT = 4.7µF, L = 1µH, unless

otherwise noted. Typical values are at TA = 25°C, VIN =3.6V.

Symbol

Parameter

Conditions

Min. Typ. Max. Units

Power Supplies

IQ

Quiescent Current

Device is not switching, EN=VIN

Device is switching, EN=VIN

16

µA

18

25

µA

I(SD) Shutdown Supply Current

VIN = 3.6V, EN = GND

0.05 1.00 µA

VUVLO

Rising Edge

Under-Voltage Lockout Threshold

Falling Edge

1.8

2.1

V

1.75

1.95

V(ENH) Enable HIGH-Level Input Voltage

V(ENL) Enable LOW-Level Input Voltage

I(EN) Enable Input Leakage Current

Oscillator

EN = VIN or GND

1.2

V

0.4

V

0.01 1.00 µA

f0SC Oscillator Frequency

Regulation

2.5

3.0

3.5 MHz

VO Output Voltage Accuracy

tSS Soft-Start

Output Driver

ILOAD = 0 to 600mA

CCM

EN = 0 -> 1

1.775 1.820 1.865 V

1.784 1.820 1.856 V

300 µs

RDS(on)

ILIM

PMOS On Resistance

NMOS On Resistance

PMOS Peak Current Limit

VIN = VGS = 3.6V

VIN = VGS = 3.6V

Open-Loop(2)

180

mΩ

170

mΩ

650

800

900 mA

TTSD Thermal Shutdown

CCM Only

150

°C

THYS Thermal Shutdown Hysteresis

20

°C

Note:

2. The Electrical Characteristics table reflects open-loop data. Refer to Operation Description and Typical

Characteristic for closed-loop data.

© 2007 Fairchild Semiconductor Corporation

FAN5350 Rev. 1.0.3

5

www.fairchildsemi.com

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