Control. FA5510P Datasheet

FA5510P Datasheet PDF

Part FA5510P
Description CMOS IC For Switching Power Supply Control
Feature FA551X series FA5510P (N), FA5511P (N) FA5514P (N), FA5515P (N) ■ Description The FA551X series are .
Manufacture ETC
Datasheet
Download FA5510P Datasheet

FA551X series FA5510P (N), FA5511P (N) FA5514P (N), FA5515P FA5510P Datasheet
FA5510P Datasheet




FA5510P
FA551X series
CMOS IC
For Switching Power SupplyFCAo5n5tr1oXl
FA5510P (N), FA5511P (N)
FA5514P (N), FA5515P (N)
Description
The FA551X series are the PWM type switching power supply
control ICs that can directly drive power MOSFET. These ICs
use a CMOS device with high dielectric strength (30V) to
implement low power consumption. These ICs contain many
function in a small 8-pin package. With these ICs, a high-
performance and compact power supply can be created
because not many external discrete components are needed.
Features
• Low current consumption by CMOS process with high
dielectric strength (30V)
• Standby current of 2µA or less (at Vcc=14V), and operating
current of 1.5mA (typ)
• Overvoltage protection function detecting the Vcc voltage
• A drive circuit for connecting a power MOSFET directly
• Output peak current: ±1.5A
• Pulse-by-pulse overcurrent limiting function
• Overload protection function (latch or non-latch mode selectable)
• Output ON-OFF function by external signal
• Latch-mode overvoltage shutdown function
• Undervoltage lockout function (16.5V ON / 9V OFF)
• Reference voltage output (5V)
• 8-pin package (DIP/SOP)
Block diagram
FA5510P (N), FA5511P (N)
CS(8)
VCC(6)
REF
(7)
5V VCC
ENB
5V REF
3.5V
FB
(2)
Dmax
FA5510: 46%
FA5511: 70%
0.8V/0.68V 5.2µA
0.95mA
15.5V
15.5V UVLO
8.5V/7.9V
0.8V
4V
PWM
16.5V/9V
ENB
OUT
(5)
OUT
PUT
OSC
RT CT
+0.24V
R
QB
SQ
FF
GND
(4)
5V Controlled block
RT(1) IS+(3)
FA5514P (N), FA5515P (N)
CS(8)
VCC(6)
REF
(7)
5V VCC
ENB
5V REF
3.5V
FB
(2)
Dmax
FA5514: 46%
FA5515: 70%
0.8V/0.68V 5.2µA
0.95mA
15.5V
15.5V UVLO
8.5V/7.9V
0.8V
4V
PWM
16.5V/9V
ENB
OUT
(5)
OUT
PUT
OSC
RT CT
-0.17V
R
QB
SQ
FF
GND
(4)
5V Controlled block
RT(1)
IS-(3)
Dimensions, mm
SOP-8
8
5
14
4.9
0.4±0.1 1.27
DIP-8
8
5
1
4
9.3
1.5±0.3
2.54
0.46±0.1
7.62
0~15˚
0.25+–00.1.05
0~15˚
Pin Pin
Function
No. symbol
1 RT
Oscillator timing
resistor
2 FB
Feedback
3 IS
Overcurrent
detection
4 GND Ground
5 OUT Output
6 VCC
7 REF
8 CS
Power supply
Reference voltage
Soft-start and
ON/OFF control
Description
Setting oscillation frequency
Input of PWM comparator
Input of the overcurrent
limiting function
Ground
Output for driving a power
MOSFET
Power supply
Reference voltage output (5V)
Soft-start, ON/OFF function and
latch-mode shutdown operations
Type
FA5510P
FA5510N
FA5511P
FA5511N
FA5514P
FA5514N
FA5515P
FA5515N
Max. duty
cycle (typ.)
46%
70%
46%
70%
Polarity of overcurrent Package
detection
+ DIP-8
SOP-8
+ DIP-8
SOP-8
– DIP-8
SOP-8
– DIP-8
SOP-8
1



FA5510P
FA551X
Absolute maximum ratings
Item
Supply Voltage
Low impedance source (ICC>15mA)
Internal zener clamp (ICC<15mA)
Output peak current
FB pin input voltage
IS pin input voltage
REF pin source current
CS pin sink current
Total power dissipation (Ta=25˚C)
Ambient temperature
Maximum junction temperature
Storage temperature
Symbol
VCC1
VCC2
IOUT
VFB
VIS
IREF
ICS
Pd
Ta
Tj
Tstg
Rating
30
Self limiting
±1.5
–0.3 to 5.0
–0.3 to 5.0
–10
+2.0
800 (DIP-8)
400 (SOP-8)
–30 to +85
125
–40 to +150
Note: There are cases where the IC cannot output the rating current depending on Vcc voltage or temperature.
Unit
V
V
A
V
V
mA
mA
mW
˚C
˚C
˚C
Maximum power dissipation curve
400mW (SOP)
800mW (DIP)
0
–30 25
85 125
Ambient temperature Ta [˚C]
Recommended operating conditions
Item
Supply voltage
Oscillation frequency
REF-GND capacitor
Soft start capacitor
Symbol
VCC
fOSC
Cref
CS
Min.
10
10
0.1
0.01
Typ.
0.47
Max.
28
500
1
Unit
V
kHz
µF
µF
2




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