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Fuji Electric

FA5301BP Datasheet Preview

FA5301BP Datasheet

Bipolar IC For Switching Power Supply Control

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FFAA53051B3P(0N)1BP(N)
s Description
The FA5301BP(N) is a bipolar IC containing basic circuits
necessary for PWM-type switching power supply control.
This IC switches an external transistor according to external
synchronizing pulses.
s Features
• External synchronization input terminal
• Wide supply voltage range (VCC =7 to 22V)
• Open-collector output
• Soft-start from standby mode
• Double protection of output transistor by overcurrent limiting
and cutoff functions
• Output ON/OFF control function
• Not many external discrete components needed
s Applications
• Switching power supply for general equipment
(Optimum for TV, display, and other monitor devices)
Bipolar IC
For Switching Power Supply Control
s Dimensions, mm
SOP-16
16
9
18
9.9±0.1
0.42±0.07
DIP-16
16
1.27±0.2
9
0.33
0.65
1
0.81
19.4
8
1.5
s Block diagram
2.54±0.25
0.5±0.1
7.6
0~15˚
0.3+–00.1.05
0~15˚
Pin Pin
No. symbol
Description
1 IN (–) Inverting input to error amplifier
2 IN (+) Non-inverting input to error
amplifier
3 ER.OUT Error amplifier output
4 FB
Feedback input
5 IS
Overcurrent detection
6 CD
Overcurrent cutoff delay
capacitor
7 GND
Ground
8 ON/OFF Output ON/OFF control
9 OUT
Output
10 DT
Dead time adjustment
11 CT
Oscillator timing capacitor
12 CSY
External synchronizing signal
detection capacitor
13 SYNC External synchronization input
14 CSO
PWM soft-start capacitor
15 REF
Reference voltage output (5V)
16 VCC
Power supply
1




Fuji Electric

FA5301BP Datasheet Preview

FA5301BP Datasheet

Bipolar IC For Switching Power Supply Control

No Preview Available !

FA5301BP(N)
s Absolute maximum ratings
s Recommended operating conditions
Item
Supply voltage
Output voltage
Error amplifier output
current
Error amplifier input
voltage
Overcurrent detection
terminal input voltage
Feedback terminal input voltage
Output ON/OFF terminal
input voltage
Synchronizing terminal
input voltage
Total power dissipation
Symbol
VCC
VO
IOM
VI
VIS
VFB
VON/OFF
VSYNC
Pd
Operating temperature
Storage temperature
Topr
Tstg
Rating
22
22
5
Unit
V
V
mA
5V
20 V
20 V
6V
6V
1000 (DIP-16) *1
400 (SOP-16) *2
–20 to +85
–40 to +150
mW
°C
°C
Item
Supply voltage
Error amplifier input voltage
Output current
Error amplifier feedback resistor
Oscillator timing capacitor
Oscillator timing resistor
Free run oscillation frequency
Synchronized frequency
Frequency ratio
fOSC fSYNC *3
fSYNC
Symbol Min.
VCC
7
VI 0
IO
RNF
33
CT 100
RT 8.2
fOSC
1
fSYNC
1
CSY=OV –35
CSY: –30
Capacitor
is connected
to GND
Max.
20
VREF-2
20
10,000
220
200
200
–5
+10
Unit
V
V
mA
k
pF
k
kHz
kHz
%
%
Notes:
*1 Derating factor Ta > 25°C : 10.0mW/°C (on PC board)
*2 Derating factor Ta > 25°C : 4.0mW/°C (on PC board)
*3 Consider the tolerance of
fosc – fSYNC
fSYNC
s Electrical characteristics (Ta = 25°C, VCC = 9V, RT = 47k, CT = 1000pF)
Reference voltage section
Item
Output voltage
Line regulation
Load current regulation
Output voltage variation by temperature fluctuation
Output current at output short-circuit
Symbol
VREF
LINE
LOAD
VTC1
VTC2
IOS
Test condition
IOR = 1mA
VCC = 8 to 20V
IOR = 0.1 to 2mA
Ta = –20 to +25°C
Ta = +25 to +85°C
Min.
4.75
Typ.
5.00
10
10
1
1
25
Max.
5.25
25
25
Unit
V
mV
mV
%
%
mA
Oscillator section
Item
Oscillation frequency
Frequency variation by line voltage fluctuation
Frequency variation by temperature fluctuation
Input current to synchronizing signal terminal
Input current to synchronizing signal detection terminal
Threshold voltage of synchronizing signal detection terminal
Symbol
fOSC
fdV
fdt1
fdt2
ISYNC1
ISYNC2
ICSY1
ICSY2
VTH CSY
Test condition
CT = 1,000pF, RT = 47k
VCC = 8 to 20V
Ta = +25 to –20°C
Ta = +25 to +85°C
VSYNC = 1V
VSYNC = –0.5V
Pin 12 = 0V, VSYNC = –0.5V
Pin 12 = 1V, VSYNC = 1V
Min.
20
–2
–2
–65
Typ.
21
300
–60
–130
200
0.7
Max.
22
2
+2
+2
600
–300
–260
400
1.0
Unit
kHz
%
%
%
µA
µA
µA
µA
V
Error amplifier section
Item
Input offset voltage
Input bias current
Common-mode input voltage
Open-loop voltage gain
Unity-gain bandwidth
Common-mode signal rejection ratio
Maximum output voltage
Output sink current
Symbol
VIO
II
VCM
AV
GB
CMRR
VOM+
VOM–
IOM–
Test condition
IOM = –50µA
IOM = 50µA
VOM = 1V
Min.
–10
0
70
170
Typ.
95
0.8
80
4
240
Max. Unit
10 mV
1 µA
VREF–2 V
dB
MHz
dB
V
0.5 V
µA
2


Part Number FA5301BP
Description Bipolar IC For Switching Power Supply Control
Maker Fuji Electric
Total Page 5 Pages
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