FAN4800IM Datasheet FAN4800IN, FAN4800IM, FAN4800IMX | P4-P6

FAN4800 Low Start-Up Current PFC/PWM Controller Combos

FAN4800 Rev. 1.0.5 4

Absolute Maximum Ratings

The “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed.

The device should not be operated at these limits. The parametric values defined in the Electrical Characteristics

tables are not guaranteed at the absolute maximum ratings.

Symbol Parameter Min. Max. Unit

V

CC

Positive Supply Voltage 20 V

I

EAO

PFC transconductance current error amplifier

output

0 5.5 V

V

ISENSE

I

SENSE

Voltage -3.0 0.7 V

Voltage on Any Other Pin GND-0.3 V

CC

+0.3 V

I

REF

I

REF

Current 10 mA

I

AC

I

AC

Input Current 1 mA

I

PFC_OUT

Peak PFC OUT Current, Source or Sink 1 A

I

PWM_OUT

Peak PWM OUT Current, Source or Sink 1 A

PFC OUT, PWM OUT Energy per Cycle 1.5 µJ

T

J

Junction Temperature 150 °C

T

STG

Storage Temperature Range -65 150 °C

T

A

Operating Temperature Range -40 125 °C

T

L

Lead Temperature (Soldering,10 seconds) 260 °C

θ

JA

Thermal Resistance (θ

JA

) Plastic DIP 80 °C/W

FAN4800 Low Start-Up Current PFC/PWM Controller Combos

FAN4800 Rev. 1.0.5 5

Electrical Characteristics

Unless otherwise stated, these specifications apply: V

CC

= 15V, R

T

= 52.3KΩ, C

T

= 470pF, T

A

= -40°C to 125°C.

Symbol Parameter Condition Min. Typ. Max. Unit

VOLTAGE ERROR AMPLIFIER

V

FB

Input Voltage Range

(1)

0 6 V

gm1 Transconductance 50 70 90 µmho

V

ref

(PFC) Feedback Reference Voltage T

A

= 25°C 2.45 2.50 2.55 V

I

b

(V

EAO

) Input Bias Current

(2)

-1.00 -0.05 mA

V

EAO

(H) Output High-Voltage 5.8 6.0 V

V

EAO

(L) Output Low-Voltage 0.1 0.4 V

I

sink

(V) Sink Current

T

A

= 25°C, V

FB

= 3V

V

EAO

= 6.0V

-35 -20 µA

I

source

(V) Source Current

T

A

= 25°C, V

FB

= 1.5V

V

EAO

= 1.5V

30 40 µA

G

V

Open Loop Gain

(1)(3)

50 60 dB

PSRR1 Power Supply Rejection Ratio

(1)

11V < V

CC

< 16.5V 50 60 dB

CURRENT ERROR AMPLIFIER

V

IEAO

Input Voltage Range

(1)

-1.5 0.7 V

gm2 Transconductance 50 85 100 µmho

V

offset

Input Offset Voltage T

A

= 25°C 25 mV

I

beao

Input Bias Current

(1)

-1 µA

I

EAO

(H) Output High-Voltage 4.00 4.25 V

I

EAO

(L) Output Low-Voltage 1.0 1.2 V

I

sink

(I) Sink Current I

SENSE

= +0.5, I

EAO

= 4.0V -65 -35 µA

I

source

(I) Source Current I

SENSE

= -0.5, I

EAO

= 1.5V 35 75 µA

Gi Open Loop Gain

(1)

60 70 dB

PSRR2 Power Supply Rejection Ratio

(1)

11V < V

CC

< 16.5V 60 75 dB

PFC OVP COMPARATOR

Vovp Threshold Voltage T

A

= 25°C 2.70 2.78 2.90 V

HY(ovp) Hysteresis T

A

= 25°C 230 350 mV

LOW-POWER DETECT COMPARATOR

V

th

(lp) Threshold Voltage T

A

= 25°C 0.15 0.30 0.40 V

VCC OVP COMPARATOR

V

CC_OVP

Threshold Voltage T

A

= 25°C 17.5 17.9 18.5 V

HY(V

CC_OVP

) Hysteresis T

A

= 25°C 1.40 1.50 1.65 V

TRI-FAULT DETECT

t

d(F)

Time to Fault Detect HIGH

(1)

V

FB

= V

Fault

Detect LOW to

V

FB

= Open. 470pF from V

FB

to GND

2 4 ms

F(L) Fault Detect LOW 0.4 0.5 0.6 V

FAN4800 Low Start-Up Current PFC/PWM Controller Combos

FAN4800 Rev. 1.0.5 6

Electrical Characteristics (Continued)

Unless otherwise stated, these specifications apply: V

CC

= 15V, R

T

= 52.3kΩ, C

T

= 470pF, T

A

= -40°C to 125°C.

Symbol Parameter Condition Min. Typ. Max. Unit

PFC I

LIMIT

COMPARATOR

V

th(cs)

Threshold Voltage -1.10 -1.00 -0.90 V

V

th(cs)

-V

gm

(PFC I

LIMIT

V

TH

– Gain Modulator

Output)

5 100 mV

t

d(pfc_off)

Delay to Output

(1)

250 ns

DC I

LIMIT

COMPARATOR

V

th(DC)

Threshold Voltage 0.95 1.00 1.05 V

t

d

(pwm_off) Delay to Output

(1)

250 ns

V

IN

OK COMPARATOR

V

th(OK)

Threshold Voltage 2.10 2.45 V

HY(OK) Hysteresis 0.8 1.0 1.2 V

GAIN MODULATOR

G1

Gain

(3)

I

AC

= 100μA, V

RMS

= 0,

V

FB

= 1V, T

A

= 25°C

0.70 0.84 0.95

Gain

(3)

G2

I

AC

= 100μA, V

RMS

= 1.1V,

V

FB

= 1V, T

A

= 25°C

1.80 2.00 2.20

G3

I

AC

= 150μA, V

RMS

= 1.8V,

V

FB

= 1V, T

A

= 25°C

0.90 1.00 1.10

G4

I

AC

= 300μA, V

RMS

= 3.3V,

V

FB

= 1V, T

A

= 25°C

0.25 0.32 0.40

BW Band Width

(1)

I

AC

= 100μA10 MHz

Vo(gm)

Output Voltage

= 3.5kΩ x (I

SENSE

– I

OFFSET

)

I

AC

= 250μA, V

RMS

= 1.1V,

V

FB

= 2V, T

A

= 25°C

0.80 1.00 1.20 V

OSCILLATOR

f

osc1

Initial Accuracy T

A

= 25°C 68 81 kHz

Δf

osc1

Voltage Stability 11V < V

CC

< 16.5V 1 %

Δf

osc2

Temperature Stability 2 %

f

osc2

Total Variation Line, Temp 66 84 kHz

V

ramp

Ramp Valley to Peak Voltage

(1)

2.75 V

t

dead

PFC Dead Time 685 ns

I

dis

CT Discharge Current V

RAMP2

= 0V, V

RAMP1

= 2.5V 6.5 15.0 mA

REFERENCE

V

ref1

Output Voltage T

A

= 25°C, I(V

REF

) = 1mA 7.4 7.5 7.6 V

ΔV

ref1

Line Regulation 11V < V

CC

< 16.5V 10 25 mV

ΔV

ref2

Load Regulation 0mA < I(V

REF

) < 7mA 10 20 mV

ΔV

ref4

Temperature Stability 0.4 %

V

ref2

Total Variation

(1)

Line, Load, Temperature 7.35 7.65 V

ΔV

ref5

Long Term Stability

(1)

T

J

= 125°C, 1000 hours 5 25 mV

FAN4800IM

FAN4800IM

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