tea1781 NXP Semiconductors, tea1781 Datasheet - Page 26

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

NXP Semiconductors
Table 8.
T
the IC; unless otherwise specified.
TEA1781_82_1
Preliminary data sheet
Symbol
I-Control 12 V
V
Pins VOUT_12V and VOUT_STB
I
Enable Normal mode
V
Digital control pin PS_OFF
V
Enable
V
I
Soft start
t
PowerGood and PowerOK
I
OPTO control
I
Overcurrent protection (OCP levels for 12 V2 are half the values given below)
V
V
pd
prot(ENABLE)
start(soft)
sink(PGOOD)
OPTO
amb
ref(12V)
EN_NM
trip
ENABLE
ref(OCP_12V)
ref(OCP_STB)
= 25 C; no over temperature; all voltages are measured with respect to ground; currents are positive when flowing into
TEA1782T characteristics
Parameter
reference voltage
(12 V)
pull-down current
voltage on pin
EN_NM
trip voltage
voltage on pin
ENABLE
protection current
on pin ENABLE
soft start time
sink current on pin
PGOOD
current on pin
OPTO
reference voltage
on pin OCP_12V
reference voltage
on pin OCP_STB
Conditions
V
Standby mode;
V
system to Standby mode
Normal mode
Standby mode
Normal mode
Standby mode
Normal mode; Protection mode
V
V
Standby mode
Normal mode
system restart
…continued
CS_x
OUT_12V
PGOOD
OPTO
= V
= 5 V
= 0.4 V
VOUT
= V
Rev. 01 — 13 February 2009
OUT_STB
+ 100 mV
= 0.4 V
TEA1781T; TEA1782T
GreenChip PC secondary control ICs
[1]
Min
11.7
11.5
4
1.14
1.18
0.66
1.0
1.4
10.5
3.8
10
6.0
0
600
4.5
40
Typ
12.1
11.9
6
1.20
0.70
1.2
1.7
11.0
4.2
15
-
-
1.23
450
3.5
30
Max
12.4
12.3
8
1.26
0.74
1.4
2.0
11.5
4.6
20
-
I
(Normal
mode)
1.28
© NXP B.V. 2009. All rights reserved.
OPTO
300
2.5
20
Unit
V
V
mA
V
V
V
V
V
V
ms
mA
mA
mA
mA
V
26 of 32
A