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PDF NE5560 Data sheet ( Hoja de datos )

Número de pieza NE5560
Descripción Switched-mode power supply control circuit
Fabricantes Philipss　
Logotipo Philipss Logotipo



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Philips Semiconductors
Switched-mode power supply control circuit
Product specification
NE/SE5560
DESCRIPTION
The NE/SE5560 is a control circuit for use in switched-mode power
supplies. This single monolithic chip incorporates all the control and
housekeeping (protection) functions required in switched-mode
power supplies, including an internal temperature-compensated
reference source, internal Zener references, sawtooth generator,
pulse-width modulator, output stage and various protection circuits.
FEATURES
• Stabilized power supply
• Temperature-compensated reference source
• Sawtooth generator
• Pulse-width modulator
• Remote on/off switching
• Current limiting
• Low supply voltage protection
• Loop fault protection
• Demagnetization/overvoltage protection
• Maximum duty cycle clamp
• Feed-forward control
• External synchronization
ORDERING INFORMATION
DESCRIPTION
16-Pin Plastic Dual In-Line Package (DIP)
16-Pin Plastic Small Outline Large (SOL) Package
16-Pin Plastic Dual In-Line Package (DIP)
16-Pin Cerdip Dual In-Line Package (CERDIP)
ABSOLUTE MAXIMUM RATINGS
SYMBOL
Supply1
PARAMETER
VCC Voltage-forced mode
ICC Current-fed mode
Output transistor (at 20-30V max)
IOUT
Output current
Collector voltage (Pin 15)
Max. emitter voltage (Pin 14)
TA Operating ambient temperature range
SE5560
NE5560
TSTG
Storage temperature range
NOTES:
1. Does not include current for timing resistors or capacitors.
PIN CONFIGURATION
D, F, N Packages
VCC 1
VZ 2
FEEDBACK 3
GAIN 4
MODULATOR 5
16 FEEDFORWARD
15 OUTPUT (COLL)
14 OUTPUT (EMIT)
13 DEMAG: OVERVOLTAGE
12 GND
DUTY CYCLE CONTROL 6
RT 7
CT 8
11 CURRENT LIMITING
10 REMOTE ON/OFF
9 EXTERNAL SYNC
SL00360
Figure 1. Pin Configuration
TEMPERATURE RANGE
0 to 70°C
0°C to 70°C
-55°C to 125°C
-55°C to 125°C
ORDER CODE
NE5560N
NE5560D
SE5560N
SE5560F
DWG #
SOT38-4
SOT162-1
SOT38-4
0582B
RATING
+18
30
40
VCC+1.4V
+5
-55 to +125
0 to 70
-65 to +150
UNIT
V
mA
mA
V
V
°C
°C
°C
1994 Aug 31
1 853-0125 13721

1 page




NE5560 pdf
Philips Semiconductors
Switched-mode power supply control circuit
Product specification
NE/SE5560
MAXIMUM PIN VOLTAGES
NE5560
Pin No
Function
Maximum Voltage
1 VCC
2 VZ
3 Feedback
4 Gain
See Note 1
Do not force (8.4V)
VZ
5 Modulator
6 Duty Cycle Control
7 RT
8 CT
9 External Sync
10 Remote On/Off
11 Current Limiting
12 GND
VZ
VZ
Current force mode
VZ
VZ
VCC
GND
13 Demagnetization/Overvoltage
VCC
14 Output (Emit)
VZ
15 Output (Collector)
VCC+2VBE
16 Feed-forward
VCC
NOTES:
1. When voltage-forced, maximum is 18V; when current-fed, maximum is 30mA. See voltage-/current-fed supply characteristic curve.
TYPICAL PERFORMANCE CHARACTERISTICS
Open-Loop Gain
60
50
Error Amplifier
Open-Loop Phase
0
–30
40 –60
30 –90
20 –120
10 –150
0
1k
10k 100k
1M
FREQUENCY (Hz)
10M
–180
1k
10k 100k
1M
FREQUENCY (Hz)
Figure 3. Typical Performance Characteristics
10M
SL00362
1994 Aug 31
5

5 Page





NE5560 arduino
Philips Semiconductors
Switched-mode power supply control circuit
Product specification
NE/SE5560
1994 Aug 31
δ MAX (%)
100
90
80
R1
70
60
50 R2
40
30
20
10
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
R2
R1 * R2
Figure 12. Graph for Determining δMAX
2
DUTY
CYCLE
6 CONTROL
12
δ (%)
80
70 δMAX 90%
60 δMAX 70%
50
40 δMAX 50%
30 δMAX 30%
20
10
103 2 3 4 5 6 7 8 9 104
R1 + R2
2 (Ω)
Figure 13. Soft-Start Minimum Duty Cycle vs R1 + R2
0.6V
0.48V
from
PWM
START
STOP
RESET
OF OUTPUT
BISTABLE
11
Figure 14. Current Protection Input
11
SL00371
SL00372
SL00373

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