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PDF TDA3609 Data sheet ( Hoja de datos )
| Número de pieza | TDA3609 | |
| Descripción | Multiple voltage regulator with switch and ignition buffers | |
| Fabricantes | NXP Semiconductors | |
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INTEGRATED CIRCUITS
DATA SHEET
TDA3609JR
Multiple voltage regulator with
switch and ignition buffers
Preliminary specification
File under Integrated Circuits, IC01
1997 Aug 15
1 page  
Philips Semiconductors
Multiple voltage regulator with switch and
ignition buffers
Preliminary specification
TDA3609JR
PINNING
SYMBOL
VP
REG1
REG3
EN3
IGN2IN
IGN1IN
IGN1OUT
IGN2OUT
RES
EN1
ENSW
HOLD
CRES
GND
REG2
BU
SW
PIN DESCRIPTION
1 supply voltage
2 regulator 1 output
3 regulator 3 output
4 enable input regulator 3
5 ignition 2 input
6 ignition 1 input
7 ignition 1 output (active LOW)
8 ignition 2 output
9 reset output
10 enable input regulator 1
11 enable input power switch
12 hold output
13 reset delay capacitor
14 ground
15 regulator 2 output
16 back-up
17 power switch output
handbook, halfpage
VP 1
REG1 2
REG3 3
EN3 4
IGN2IN 5
IGN1IN 6
IGN1OUT 7
IGN2OUT 8
RES 9 TDA3609JR
EN1 10
ENSW 11
HOLD 12
CRES 13
GND 14
REG2 15
BU 16
SW 17
MGK606
Fig.2 Pin configuration.
FUNCTIONAL DESCRIPTION
The TDA3609JR is a multiple output voltage regulator with
a power switch, intended for use in car radios with or
without a microcontroller. Because of low-voltage
operation of the car radio, low-voltage drop regulators are
used in the TDA3609JR.
Regulator 2 will switch on when the back-up voltage
exceeds 6.5 V for the first time and will switch off again
when the output voltage of regulator 2 is below 1.9 V (this
is far below an engine start). When regulator 2 is switched
on and the output voltage of this regulator is within its
voltage range, the reset output will be enabled (reset will
go HIGH via a pull-up resistor) to generate a reset to the
microcontroller. The reset cycles can be extended by a
external capacitor at pin 13. The above mentioned start-up
feature is built-in to secure a smooth start-up of the
microcontroller at first connection, without uncontrolled
switching of regulator 2 during the start-up sequence.
The charge of the back-up capacitor can be used to supply
regulator 2 for a short period when the supply falls down
to 0 V (time depends on value of storage capacitor).
The output stages (regulator 1 and 3) of this regulator have
extreme low noise behaviour and good stability. Using
small output capacitors regulator 1 and 3 are made stable.
When both regulator 2 and the supply voltage (VP > 4.5 V)
are available, regulators 1 and 3 can be operated by
means of enable inputs (pins 10 and 4 respectively).
Regulator 1 has a hold output (open collector) indicating
that the output voltage of this regulator is settled (held
HIGH by external pull-up resistor). When the output
voltage of this regulator drops out of regulation (because
of supply voltage drop or high load) the hold output will go
LOW. The hold output signal is only valid when regulator 1
is enabled by its enable input (pin 10).
1997 Aug 15
5
5 Page 
Philips Semiconductors
Multiple voltage regulator with switch and
ignition buffers
Preliminary specification
TDA3609JR
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
Regulator 3 (IREG3 = 5 mA unless otherwise specified)
VO(off)
output voltage off
VO(REG3) output voltage
∆V
∆VL
Iq
SVRR
line regulation
load regulation
quiescent current
supply voltage ripple
rejection
1 mA ≤ IREG3 ≤ 500 mA
7 V ≤ VP ≤ 18 V
7 V ≤ VP ≤ 18 V
1 mA ≤ IREG3 ≤ 500 mA
IR3 = 500 mA
fi = 3 kHz; Vi(p-p) = 2 V
−
4.75
4.75
−
−
−
60
Vd
IREGm3
IREGsc3
drop-out voltage
current limit
short-circuit current
IREG3 = 500 mA;
VP = 5.75 V; note 6
VREG3 > 4.5 V; note 7
RL ≤ 0.5 Ω; note 8
−
0.60
100
Power switch
Vd drop-out voltage
Isw = 1 A; VP = 13.5 V;
note 11
−
Isw = 1.8 A; VP = 13.5 V;
note 11
−
Idc continuous current
VP = 16 V; Vsw = 13.5 V
1.8
Vcl clamping voltage
VP ≥ 17 V
13.5
IM peak current
VP = 17 V; notes 12 and 13 3
Vfb fly back voltage behaviour Isw = −100 mA
−
Isc short-circuit current VP = 14.4 V; Vsw < 1.2 V; −
note 13
1
5.0
5.0
2
20
19
70
1
0.80
400
0.6
1.4
2.0
15.0
−
VP + 3
0.8
Back-up switch
Idc continuous current
Vcl clamping voltage
Ir reverse current
VP ≥ 16.7 V
VP = 0 V; Vbu = 12.4 V
Schmitt trigger for enable input of ignition 1
Vthr rising threshold voltage of
ignition 1 input
Vthf falling threshold voltage of
ignition 1 input
Vhys
ILI
II(clamp)
VIH(clamp)
hysteresis voltage
input leakage current
input clamping current
HIGH-level input clamping
voltage
VIGN1in = 5 V
VIGN1in > 50 V
VIL(clamp) LOW-level input clamping
voltage
0.3 0.35
−−
−−
2.75 3.25
0.8 −
1.5 −
−−
−−
VP −
−0.6 −
MAX.
400
5.25
5.25
50
75
45
−
1.5
−
−
0.85
1.9
−
16.0
−
22
−
−
16
900
3.75
1.3
−
1.0
50
50
0
UNIT
mV
V
V
mV
mV
mA
dB
V
A
mA
V
V
A
V
A
V
A
A
V
mA
V
V
V
µA
mA
V
V
1997 Aug 15
11
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet TDA3609.PDF ] | |
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