tea1781 NXP Semiconductors, tea1781 Datasheet - Page 24

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

NXP Semiconductors
Table 7.
T
the IC; unless otherwise specified.
[1]
TEA1781_82_1
Preliminary data sheet
Symbol
I
Soft start
t
PGOOD and PWROK
I
V
V
I
Overcurrent protection
V
V
Undervoltage/overvoltage protection
V
V
V
V
Temperature protection
V
V
ENABLE
start(soft)
sink(PGOOD)
sink(PWROK)
amb
trip(H)(PGOOD)
trip(L)(PGOOD)
ref(OCP)
ocp
uvp(VOUT_3V3)
uvp(VOUT_5V)
ovp(VOUT_3V3)
ovp(VOUT_5V)
otp(H)
otp(L)
V
= 25 C; no over temperature; all voltages are measured with respect to ground; currents are positive when flowing into
CS_x
: the “x” stand for either “3V3” or ”5V”.
TEA1781T characteristics
Parameter
current on pin ENABLE
soft start time
sink current on pin
PGOOD
HIGH-level trip voltage on
pin PGOOD
LOW-level trip voltage on
pin PGOOD
sink current on pin
PWROK
reference voltage on pin
OCP
overcurrent protection
voltage
undervoltage protection
voltage on pin
VOUT_3V3
undervoltage protection
voltage on pin VOUT_5V
overvoltage protection
voltage on pin
VOUT_3V3
overvoltage protection
voltage on pin VOUT_5V
HIGH-level
overtemperature
protection voltage
LOW-level
overtemperature
protection voltage
…continued
Conditions
current pulled out of the pin ENABLE to
disable, to move to Protection mode
V
LOW
V
OCP = n.c.
V
protection; OCP = n.c.
V
protection; I
V
protection; I
V
protection during soft start; OCP = n.c.
V
V
PGOOD
PWROK
CS_x
CS_x
CS_x
CS_x
ENABLE
ENABLE
Rev. 01 — 13 February 2009
V
V
V
V
= 0.4 V
= 0.4 V
= 12 V
= 0 V
VOUT
VOUT
VOUT
VOUT
ocp
ocp
activating current
activating current
activating current
activating current
= 100 A
= 50 A
TEA1781T; TEA1782T
GreenChip PC secondary control ICs
[1]
[1]
[1]
[1]
Min
1.0
10
6.0
2.5
2.2
16
1.21
155
320
60
310
2.60
4.00
3.76
6.00
450
320
Typ
-
15
-
2.7
2.4
-
1.25
180
380
80
360
2.80
4.25
4.00
6.40
505
375
© NXP B.V. 2009. All rights reserved.
Max
-
-
3.0
2.7
-
1.29
205
440
105
410
3.00
4.50
4.25
6.80
560
430
20
Unit
mA
ms
mA
V
V
mA
V
mV
mV
mV
mV
V
V
V
V
mV
mV
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