tea1533p NXP Semiconductors, tea1533p Datasheet - Page 4

• Manufacturer Part Number: tea1533p
• Description: Greenchip Smps Control Ic
• Manufacturer: NXP Semiconductors

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CTRL
V CC
GND
1
2
3
2.5 V
TEA1533AP
S1
TEA1533P
I prot(CTRL)
M-level
burst
detect
1
FREQUENCY
internal
supply
CONTROL
MANAGEMENT
TEMPERATURE
CONTROLLED
OSCILLATOR
PROTECTION
POWER-ON
VOLTAGE
SUPPLY
RESET
UVLO start
OVER-
PROTECTION
MAXIMUM
ON-TIME
(TEA1533AP)
V CC < 4.5 V
or UVLO
Fig.2 Block diagram.
PROTECTION
UVLO
DEMAG
SHORT
UP/DOWN
COUNTER
LOGIC
LOGIC
S
R
S
R
Q
Q
Q
Q
CURRENT SOURCE
OCP
START-UP
100
mV
VALLEY
winding
short
mV
50
PROTECTION
blank
VOLTAGE
OCP
LEB
OVER-
DRIVER
0.88 V
OVERPOWER
PROTECTION
clamp
I prot(DEM)
start
soft
S2
I ss
0.5 V
MGU506
8
7
4
6
5
DRAIN
HVS
n.c.
DEM
DRIVER
I sense