FAN7554DTF Fairchild Semiconductor, FAN7554DTF Datasheet - Page 4

• Manufacturer Part Number: FAN7554DTF
• Description: IC CTRLR PWM CURRENT MODE 8SOIC
• Manufacturer: Fairchild Semiconductor

Specifications of FAN7554DTF

• Pwm Type: Current Mode
• Number Of Outputs: 1
• Frequency - Max: 500kHz
• Duty Cycle: 98%
• Voltage - Supply: 9 V ~ 30 V
• Buck: No
• Boost: No
• Flyback: Yes
• Inverting: No
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: Yes
• Operating Temperature: -25°C ~ 85°C
• Package / Case: 8-SOIC (3.9mm Width)
• Frequency-max: 500kHz
• Output Current: 1 A
• Switching Frequency: 500 KHz
• Mounting Style: SMD/SMT
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 25 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: FAN7554DTFTR; FAN7554DTF_NL; FAN7554DTF_NLTR; FAN7554DTF_NLTR

FAN7554
Electrical Characteristics
(Ta = 25 C, Vcc=16V, Rt=10k , Ct=3.3nF unless otherwise specified)
4
Parameter
< REFERENCE SECTION >
Reference output voltage
Line regulation
Load regulation
Short circuit output current
< OSCILLATOR SECTION >
Oscillation frequency
Frequency change with Vcc
Ramp high voltage
Ramp low voltage
Discharge current
< PWM SECTION >
Sense threshold voltage
Feedback threshold voltage
Feedback source current
Max. duty cycle
Min. duty cycle
< PROTECTION SECTION >
Shutdown delay current
Shutdown feedback voltage
Over current protection
Over voltage protection
< ON/OFF CONTROL SECTION >
Off mode sink current
Off threshold voltage
< SOFT-START SECTION >
Soft start current
Soft start limit voltage
<OUTPUT SECTION>
Low output voltage1
High output voltage1
Low output voltage2
High output voltage2
Rising time (Note1)
Falling time (Note1)
<UVLO SECTION>
Start threshold voltage
Min. operating voltage
V
V
Symbol
V
V
V
D
D
LIM(S/S)
Idisch
OPR(M)
F
V
V
V
V
F
V
V
V
I
V
V
TH(FB)
TH(ST)
V
TH(IS)
V
V
V
(MAX)
SINK
I
I
(MIN)
I
I
OSC
OSC1
OVP
S/S
OH1
OH2
REF
OFF
REF1
REF2
SC
SD
OL1
OL2
FB
t
t
RH
OC
SD
RL
R
F
T
Vcc =12V ~ 25V
Iref =1mA ~ 20mA
T
T
Vcc = 12V ~ 25V
V
V
V
V
4V
V
V
V
V
V
Vcc = 16V
V
V
V
Vcc = 18V, Io = -200mA
T
T
j
j
j
j
j
RT/CT
FB
IS
FB
FB
IS
FB
FB
FB
CC
CC
CC
=25 C , Iref =1mA
= 25 C
= 25 C
= 25 C, C
= 25 C, C
= 0V
> 1.5V,
= 5V
= 0V, V
> 5V
< V
< V
= 5V, V
= 18V, I
= 18V, I
= 18V, I
V
FB
= 3.3V
TH(FB)
TH(FB)
Conditions
V
t
S/S
S/S
L
L
on
O
O
O
SD
= 1nF
= 1nF
-
-
-
-
-
-
-
, V
= 50mA
= -50mA
= 200mA
> 500nS
= 5V
= 0V
S/S
= 5V
Min.
4.90
13.2
6.1
0.8
0.2
3.5
5.4
1.6
1.2
8.2
45
92
30
13
12
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Typ.
5.00
0.05
0.15
0.1
2.8
1.2
1.0
0.3
1.0
1.5
1.1
5.2
1.5
50
95
34
15
14
80
40
15
6
6
5
6
2
4
9
-
-
Max.
5.10
0.18
16.2
10.2
1.0
9.4
1.2
0.4
6.5
6.6
2.4
1.8
0.4
2.5
20
25
55
98
38
17
16
0
-
-
-
-
-
-
-
-
Unit
kHz
mV
mV
mA
mA
mA
mA
uA
ns
ns
%
%
%
V
A
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V