FAN21SV04_12 datasheet(5/18 Pages) FAIRCHILD

Numer części	FAN21SV04

Szczegółowy opis	TinyBuck??4 A, 24 V Single-Input Integrated Synchronous Buck Regulator

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Producent	FAIRCHILD [Fairchild Semiconductor]

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FAN21SV04 • Rev. 1.0.3

5

Electrical Characteristics

Recommended operating conditions and using the circuit shown in Figure 1, with VIN, VIN_Reg=12 V, unless

otherwise noted.

Parameter

Conditions

Min.

Typ.

Max.

Units

Power Supplies

Operating Current

(VIN+VIN_Reg)

VIN=12 V, 5V_Reg Open, CLK Open,

fSW=500 KHz, No Load

22

30

mA

VIN_Reg Operating Current

EN=High, 5 V_Reg Open, CLK Open,

fSW=500 KHz

11

mA

VIN_Reg Quiescent Current

EN=High, FB=0.9 V

4

5

mA

VIN_Reg Standby Current

EN=0, VIN=12 V

1

mA

5V_Reg Output Voltage

Internal VCC Regulator, No Load,

6.5 V<VIN_Reg<24 V

4.7

5.0

5.3

V

5V_Reg Max. Current Load

VIN_Reg=12 V

5

mA

VIN_Reg UVLO Threshold

Rising VIN, VIN=VIN_Reg

5.6

6.3

V

Falling VIN, VIN=VIN_Reg

5

V

Reference

Reference Voltage measured

at FB (See Figure 4 for

Temperature Coefficient)

FAN21SV04MPX, TA=25°C

794

800

806

mV

FAN21SV04EMPX, TA=25°C

795

800

805

Oscillator

Frequency

RT=50 k

Ω to GND (Master Mode)

255

300

345

KHz

RT=24 k

Ω to GND (Master Mode)

540

600

660

Frequency in Slave Mode

Compared to Master Mode

RT=24 k

Ω to 50 kΩ to 5 V_Reg

(Slave Mode)

-15

+15

%

Minimum On Time

(2)

40

65

ns

Duty Cycle

VIN=6.5 V, fSW=600 KHz

80

85

%

Ramp Amplitude,

Peak–to-Peak

(2)

VIN=16 V, 1.8 VOUT, RT=30 k

Ω,

RRAMP=200 k

Ω

0.5

V

Minimum Off Time

(2)

100

150

ns

Synchronization

CLK Output Pulse Width

Master (RT to GND)

70

85

100

ns

CLK Output Sink Current

Master, VCLK=0.4 V

0.25

0.35

mA

CLK Output Source Current

Master, VCLK=2 V

-2.5

-2.0

mA

CLK Input Pulse Width

Slave: VCLK > 2 V

50

ns

CLK Input Source Current

Slave: VCLK=1 V

-230

-200

-170

µA

CLK Input Threshold, Rising

Slave

1.73

1.83

1.93

V

Soft-Start

VOUT to Regulation (T0.8)

Frequency=500 KHz

2.5

ms

Fault Enable/SSOK (T1.0)

3.1

ms

Error Amplifier

DC Gain

(2)

VIN_Reg > 6.5 V

80

85

dB

Gain Bandwidth Product

(2)

12

15

MHz

Output Voltage Swing (VCOMP)

0.4

4.0

V

Output Current, Sourcing

5V_Reg=5 V, VCOMP=2.2 V

1.5

2.2

2.5

mA

Output Current, Sinking

5V_Reg=5 V, VCOMP=1.2 V

0.8

1.2

1.5

mA

FB Bias Current

VFB=0.8 V, TA=25°C

-850

-650

-450

nA

Note:

2.

Specifications guaranteed by design and characterization; not production tested.

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Fairchild Semiconductor	FAN21SV04EMPX	793Kb / 18P	TinyBuck??4A, 24V Single-Input Integrated Synchronous Buck Regulator
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FAN21SV04 Arkusz danych(PDF) 5 Page - Fairchild Semiconductor

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