tea1781 NXP Semiconductors, tea1781 Datasheet - Page 5

• Manufacturer Part Number: tea1781
• Description: Greenchip Pc Secondary Control Ics
• Manufacturer: NXP Semiconductors

NXP Semiconductors
TEA1781_82_1
Preliminary data sheet
6.2 Pin description
Table 2.
Table 3.
Symbol
FSB_5V
GSB_5V
DF_5V
VSTARTUP
OCP
CS_5V
VOUT_5V
VSENSE_5V
VNTC
ENABLE
PGND_5V
GSF_5V
GND
GND
VDD
GSF_3V3
PGND_3V3
PWROK
VSENSE_3V3
VOUT_3V3
CS_3V3
PGOOD
DF_3V3
GSB_3V3
FSB_3V3
WND_SEC_2
GSR
FSR
Symbol
FSB_12V
GSB_12V
DF_12V
OCP_12V
CS_12V
VOUT_12V1
VOUT_12V2
EN_NM
TEA1781T pin description
TEA1782T Pin description
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
Pin
1
2
3
4
5
6
7
8
Rev. 01 — 13 February 2009
Description
floating supply switch SB_5V
gate driver switch SB_5V
drain voltage of switch SF_5V
start-up voltage connected to rectified secondary winding voltage
overcurrent protection
current sense 5 V output
output voltage 5 V output
sense voltage 5 V output
NTC voltage
enabling Normal mode
power ground 5 V output
gate driver switch SF_5V
ground
ground
supply voltage
gate driver switch SF_3V3
power ground 3V3 output
power OK
sense voltage 3.3 V output
output voltage 3.3 V output
current sense 5 V output
PowerGood (delay setting for power OK)
drain voltage of switch SF_3V3
gate driver switch SB_3V3
gate driver switch SB_3V3
secondary transformer 3.3 V / 5 V winding voltage
gate driver switch SR (3.3 V / 5 V)
floating supply switch SR (3.3 V / 5 V)
Description
floating supply switch SB_12V
gate driver switch SB_12V
drain voltage of switch SF_12V
overcurrent protection 12 V output
current sense 12 V output
output voltage 12 V1 output
output voltage 12 V2 output
enable Normal mode
TEA1781T; TEA1782T
GreenChip PC secondary control ICs
© NXP B.V. 2009. All rights reserved.
5 of 32