tea1553t NXP Semiconductors, tea1553t Datasheet - Page 3

• Manufacturer Part Number: tea1553t
• Description: Tea1553t Greenchip Ii Smps Control Ic
• Manufacturer: NXP Semiconductors

NXP Semiconductors
5. Block diagram
TEA1553T_1
Product data sheet
Fig 1. Block diagram of TEA1553T
VCOADJ
CSTART
STDBY
LOCK
CTRL
GND
V
CC
9
11
4
1
14
15
13
TEA1553T
300
300
S1
I VCOADJ
I prot(CTRL)
5.6 V
5.6 V
V mains(oper)(en)
CONTROLLED
OSCILLATORS
1
FREQUENCY
VOLTAGE
MINIMUM FREQ.
ENABLING AND
CONTROL
TIMING
2.5 V
OVERTEMPERATURE
POWER-ON
INTERNAL
RESET
PROTECTION
LOCK
DETECT
SUPPLY
MANAGEMENT
SUPPLY
UVLO
ENABLE/DISABLE
PROTECTION
MAXIMUM
ON-TIME
START
Rev. 01 — 3 July 2007
LOGIC
LOGIC
UVLO
4.5 V
VCC
S
R
R
S
Q
Q
Q
Q
CURRENT SOURCE
80 mV
VALLEY
START UP
+
OVERPOWER
PROTECTION
ADVANCED
BLANK
OVERVOLTAGE
PROTECTION
OVERPOWER
PROTECTION
0.88 V
COUNTERS
UP/DOWN
LEB
GreenChip II SMPS control IC
DRIVER
+
S3
CLAMP
I AOP
0.5 V
5 V/1 mA
S2
TEA1553T
(MAX)
5.6 V
I startup(soft)
© NXP B.V. 2007. All rights reserved.
300
014aaa004
0.5 V
6, 7
16
12
8
2
5
3
DRAIN
HVS
DEM
OVPFCAP
DRIVER
ISENSE
VCC5V
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