tda3681 NXP Semiconductors, tda3681 Datasheet - Page 19

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

Philips Semiconductors
TEST AND APPLICATION INFORMATION
Test information
2004 Mar 31
Multiple voltage regulator with switch and
ignition buffer
(1) A minimum capacitor of 220 nF on the supply lines V
(2) A minimum capacitor of 1 F for backup supply is required for stability.
(3) Capacitor represents the typical input capacitance of CMOS logic connected to the reset and hold outputs.
V
V
V
ENSW
EN1/3
V
IGNIN
V
V
EN4
V
P1
P2
BU
10 k
220 nF
220 nF
R6
C1
C7
enable input power switch
enable input regulator 1/3
enable input regulator 4
(1)
(1)
(2)
supply voltage 2
supply voltage 1
C8
47 nF
C10
100 F
C11
1 nF
Fig.10 Test circuit of TDA3681J and TDA3681JR.
ignition input
reset delay
capacitor
C13
1000 F
C14
1000 F
backup
3
8
14
5
17
11
10
9
P1
and V
TDA3681JR
TDA3681J
P2
13
is required for stability.
ground
19
16
15
12
1
2
4
7
6
regulator 2
output
regulator 1
output
regulator 3
output
regulator 4
output
reset
output
hold output
ignition output
power switch output
100 nF
100 nF
100 nF
100 nF
100 nF
C15
C16
C17
C18
C19
R3
10 k
C2
10 F
C3
10 F
C4
10 F
C5
10 F
C6
10 F
(3)
(3)
8.5 V
3.3 V
5 V
5 V
C9
50 pF
C12
50 pF
mgl911
Product specification
TDA3681
R
12 k
R
5 k
R
10 k
R
5 k
R
5 k
L(SW)
L(REG2)
L(REG1)
L(REG3)
L(REG4)