FAN6520A_06 datasheet(5/15 Pages) FAIRCHILD

部件名	FAN6520A

功能描述	Single Synchronous Buck PWM Controller

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制造商	FAIRCHILD [Fairchild Semiconductor]

网页	http://www.fairchildsemi.com

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FAN6520A Rev. 1.0.5

5

Electrical Specifications

VCC = 5V and TA = 25°C, using the circuit shown in Figure 1 unless otherwise noted. The • denotes specifications that

apply over the full operating temperature range.

Notes:

1. All limits at operating temperature extremes are guaranteed by design, characterization, and statistical quality

control.

2. AC specifications guaranteed by design/characterization (not production tested).

Symbol Parameter

Conditions

Min.

Typ.

Max.

Units

Supply Current

IVCC

VCC Current

HDRV, LDRV open

•

1.5

2.4

3.8

mA

Power-On Reset

POR

Rising VCC POR Threshold

•

4.00

4.22

4.45

V

VCC POR Threshold Hysteresis

170

mV

Oscillator

FOSC

Frequency

FAN6520A

•

250

300

340

kHz

FAN6520AI

•

230

300

340

kHz

ΔV

OSC

Ramp Amplitude

•

1.5

Vp-p

Reference

VREF

Reference Voltage

TA = 0 to 70°C

•

788

800

812

mV

FAN6520AI

•

780

800

820

mV

Error Amplifier

DC Gain

88

dB

GBWP

Gain – Bandwidth Product

15

MHz

S/R

Slew Rate

8

V/µs

Gate Drivers

RHUP

HDRV Pulll-Up Resistance

2.5

Ω

RHDN

HDRV Pull-Down Resistance

2.0

Ω

RLUP

LDRV Pull-Up Resistance

2.5

Ω

RLDN

LDRV Pull-Down Resistance

1.0

Ω

Protection/Disable

IOCSET

OCSET Current Source

FAN6520A

•

17

20

22

μA

FAN6520AI

•

142024

μA

VDISABLE Disable Threshold

800

mV

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