Philips Semiconductors
Product specification
Switched-mode power supply control circuit
NE/SE5561
DESCRIPTION
The NE5561/SE5561 is a control circuit for use in switched-mode
power supplies. It contains an internal temperature- compensated
supply, PWM, sawtooth oscillator, overcurrent sense latch, and
output stage. The device is intended for low cost SMPS applications
where extensive housekeeping functions are not required.
PIN CONFIGURATION
D, FE, N Packages
V
CC
V
Z
1
2
3
4
8
7
6
5
GND
OUTPUT
CURRENT SENSE
R
T
,
C
T
FEATURES
FEEDBACK
GAIN
鈥?/div>
Micro-miniature (D) package
鈥?/div>
Pulse-width modulator
鈥?/div>
Current limiting (cycle-by-cycle)
鈥?/div>
Sawtooth generator
鈥?/div>
Stabilized power supply
鈥?/div>
Double pulse protection
鈥?/div>
Internal temperature-compensated reference
ORDERING INFORMATION
DESCRIPTION
8-Pin Plastic Dual In-Line Package (DIP)
8-Pin Plastic Dual In-Line Package (DIP)
8-Pin Ceramic Dual In-Line Package (CERDIP)
8-Pin Small Outline (SO) Package
Figure 1. Pin Configuration
APPLICATIONS
鈥?/div>
Switched-mode power supplies
鈥?/div>
DC motor controller inverter
鈥?/div>
DC/DC converter
TEMPERATURE RANGE
0 to +70擄C
-55 to +125擄C
-55 to +125擄C
0 to +70擄C
ORDER CODE
NE5561N
SE5561N
SE5561FE
NE5561D
DWG #
SOT97-1
SOT97-1
0580A
SOT96-1
BLOCK DIAGRAM
R
T
,
C
T
5
REF
VOLTAGE
SAWTOOTH
GENERATOR
V
CC
+
ERROR
AMP
FEEDBACK
3
鈥?/div>
PWM
R
GAIN
4
7
S
LATCH
OUTPUT
0.5V
鈥?/div>
STABILIZED
SUPPLY
1
8
GND
8.2V
2
V
Z
CURRENT
SENSE
6
+
V
CC
SL00385
Figure 2. Block Diagram
1994 Aug 31
1
853-0889 13721
NE5561N相關(guān)型號PDF文件下載
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