tea1533t NXP Semiconductors, tea1533t Datasheet - Page 4

• Manufacturer Part Number: tea1533t
• Description: Greenchiptmii Smps Control Ic
• Manufacturer: NXP Semiconductors

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CTRL
V CC
GND
2
3
6
2.5 V
TEA1533AT
S1
TEA1533T
I prot(CTRL)
M-level
burst
detect
1
FREQUENCY
internal
supply
CONTROL
MANAGEMENT
CONTROLLED
TEMPERATURE
OSCILLATOR
PROTECTION
POWER-ON
VOLTAGE
SUPPLY
RESET
OVER-
UVLO start
PROTECTION
MAXIMUM
ON-TIME
(TEA1533AT)
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
12, 13
0.5 V
MGU500
14
11
7
9
DRAIN
HVS
n.c.
DEM
DRIVER
I sense