tda3681 NXP Semiconductors, tda3681 Datasheet - Page 17

• Manufacturer Part Number: tda3681
• Description: Multiple Voltage Regulator With Switch And Ignition Buffer
• Manufacturer: NXP Semiconductors

Philips Semiconductors
Notes
1. Minimum operating voltage, only if V
2. The total quiescent current is measured in the standby mode. Therefore, the enable inputs of regulators 1, 3, 4 and
3. The voltage of the regulator drops as a result of a V
4. The rise and fall times are measured with a 10 k pull-up resistor and a 50 pF load capacitor.
5. The delay time depends on the value of the reset delay capacitor:
6. The delay time depends on the value of the reset delay capacitor:
7. The drop-out voltage of regulators 1 and 2 is measured between pins V
8. At current limit, I
9. The foldback current protection limits the dissipated power at short-circuit (see Fig.8).
10. The drop-out voltage is measured between pins BU and REG2.
11. The drop-out voltage of the power switch is measured between pins V
12. The maximum output current of the power switch is limited to 1.8 A when the supply voltage exceeds 18 V.
13. At short-circuit, I
2004 Mar 31
Ignition buffer
V
V
I
I
t
t
Temperature protection
T
T
OL
OH
PLH
PHL
j(sd)
j(hold)
SYMBOL
OL
OH
Multiple voltage regulator with switch and
ignition buffer
the power switch are grounded and R
of V
regulators 3 and 4 is measured between pins V
of at least 10 ms.
P2
drop.
LOW-level output voltage I
HIGH-level output
voltage
LOW-level sink current
HIGH-level source
current
LOW-to-HIGH
propagation time
HIGH-to-LOW
propagation time
junction temperature for
shutdown
junction temperature for
hold trigger
sc(SW)
m(REGn)
PARAMETER
of the power switch is held constant to a lower value than the continuous current after a delay
is held constant (see Fig.8).
P1
L(REG2)
I
V
V
V
V
IGNOUT
IGNOUT
has exceeded 6.5 V.
IGNOUT
IGNOUT
IGNIN
IGNIN
rising from 1.7 to 2.5 V
falling from 2.5 to 1.7 V
=
= 0 mA
= 0 mA
CONDITIONS
P2
0.8 V
4.5 V
; see Figs 10 and 11.
P1
and REGn.
drop for regulators 1 and 2. Regulators 3 and 4 drop as a result
17
t
t
d(RES)
d(SW)
P1
0
4.5
0.45
0.45
150
150
MIN.
P1
and SW.
=
=
and REGn. The drop-out voltage of
----- -
I
C
ch
----- -
I
C
ch
0.2
5.0
0.8
2.0
160
160
V
V
TYP.
C(th)
C(th)
=
=
C
C
0.8
5.25
500
500
170
170
Product specification
375
750
MAX.
TDA3681
10
10
3
3
s
s
UNIT
V
V
mA
mA
C
C
s
s