tea1541 NXP Semiconductors, tea1541 Datasheet - Page 5

• Manufacturer Part Number: tea1541
• Description: Smps Control Ic With Synchronization Function
• Manufacturer: NXP Semiconductors

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CTRL
GND
V CC
1
2
3
S1
I CTRL
3.5 V
TEA1541
DETECTOR
AND-HOLD
burst
detect
SAMPLE-
SYNC.
mains ok
(internal
control)
information)
(frequency
internal
supply
MANAGEMENT
TEMPERATURE
CONTROLLED
PROTECTION
OSCILLATOR
FREQUENCY
POWER-ON
VOLTAGE
CONTROL
SUPPLY
(internal
control)
RESET
UVLO
OVER-
CONTROL
BURST
start
PROTECTION
information)
MAXIMUM
(frequency
ON-TIME
Fig.2 Block diagram.
OCP
PCS
SHORT-CIRCUIT
PROTECTION
CONTINUOUS
PROTECTION
UVLO
MODE
DEM
700 mV
LOGIC
S
R
Q
OCP
OCP
100 mV
50 mV
winding
OVERVOLTAGE
PROTECTION
short-
circuit
blank
PCS
I DEM
LEB
information)
880 mV
(frequency
DRIVER
SIMULATION
Clamp
START-UP
CURRENT
CURRENT
PRIMARY
SOURCE
OVERPOWER
PROTECTION
S2
soft
start
I SS
(internal
control)
MDB083
8
7
4
6
5
VIN
HVS
DEM
DRIVER
I sense