TEA1751L Ver la hoja de datos (PDF) - NXP Semiconductors.
Número de pieza
componentes Descripción
Fabricante
TEA1751L
NXP Semiconductors.
TEA1751L Datasheet PDF : 29 Pages
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NXP Semiconductors
5. Block diagram
TEA1751T; TEA1751LT
GreenChip III SMPS control IC
VINSENSE 7
PFCCOMP 6
VOSENSE 9
PFCSENSE 11
PFCAUX 8
PFCDRIVER
FBDRIVER
1.12 V
3.5 V
LOW
VIN
PFC DRIVER
PFC GATE
12
DRV
13
FB DRIVER
DRV
FB GATE
EXT PROT
80 μA
1.25 V
5 LATCH
BOOST
LATCH
RESET
MAX PFC PROT
PROT
ENABLE PFC
LOW
POWER
2.50 V
15 μA
2.7 V
3.7 V
BOOST
VoOVP
LOW VIN
VoSTART FB
VoSHORT
1.25 V
PFC
PROT
PFC
OSC
VCC GOOD
VoSTART FB
LOW POWER
EXT PROT
TIMEOUT
EXT PROT
OTP
OvpFB
LATCH RESET
OCP
500 mV
BLANK
PFC DRIVER
ENABLE PFC
TIMEOUT
TON MAX
VoSHORT
VUVLO
60 μA
SOFT START
START STOP PFC
PROT
EXT PROT
Vstartup
Vth(UVLO)
VALLEY
DETECT
TIMER 4 μs
PFCGATE
ZCS
OTP
CHARGE
TIMER 50 μs
100 mV
16
R
Q
S
R
Q
S
TON MAX
FB
OSC
PROT
ENABLE
FB
Freq
Red.
LOW
POWER
TIME
OUT
2.5 V
3.5 V
30 μA
3
SMPS
CONTROL
Freq. Red.
STARTFB
START STOP
OPP MIN OCP
PFC
S (TEA1751L only)
S
S
S
LATCHED
PROTECTION
R
FB
DRIVER
BLANK
10
S (TEA1751 only)
S SAFE
S RESTART
R PROTECTION
CHARGE
PROT
VCC GOOD
ENABLE FB
START FB
START
SOFT
60 μA
CONTROL
CHARGE
VALLEY
OPP
OPP
DETECT
INTERNAL
OvpFB
OVP
COUNTER
SUPPLY
4
Vstartup
FB GATE
ZCS
Vth(UVLO) TEMP
OTP
1
80 mV
2
FBCTRL
FBSENSE
FBAUX
HV
VCC
GND
014aaa299
Fig 1.
Remark:
For the TEA1751L the time-out is latched.
For the TEA1751 the time-out is safe restart.
Block diagram
TEA1751T_LT_2
Product data sheet
Rev. 02 — 23 December 2009
© NXP B.V. 2009. All rights reserved.
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