Fujitsu MB3829PFV-G-BND System power supply ic for mobile telephone Datasheet

March 1998
Edition 1.0
DATA SHEET
MB3829
System Power Supply IC for Mobile Telephone
DESCRIPTION
This power supply IC incorporates a 4 - channel series regulator and a battery
backup function. It is a multi - function power supply IC with an output control
function and momentary power - loss detection circuit, which are both
required for mobile telephones. It also incorporates a speaker amplifier and a
buzzer driver. Since it has a built - in power system suitable for mobile
telephones, it promises equipment downsizing.
48-PIN PLASTIC LQFP
(FPT-48P-M05)
FEATURES
Power consumption during standby
: 0.22 mW (typ.)
4 - channel low - saturation voltage type
series regulator
: 6 W typ. for channels 1 - 3
20 W typ. for channel 4
Battery backup function
Momentary power - loss and power - restoration functions
ON/OFF switch circuit with an operating error prevention function
BTL amplifier for driving the speaker
: Output power= 90 mW typ.
Buzzer driver to permit changing the sound volume : 200 mA max.
Power supply voltage drops are accurately detected.
Hysteresis is provided for detection voltage.
Watchdog timer stop function is provided (inhibit pin).
Watchdog monitoring time and reset time are set independently.
This device contains circuitry to protect the inputs against
damage due to high static voltages or electric fields.
However, it is advised that normal precautions be taken to
avoid application of any voltage higher than maximum rated
voltages to this high impedance circuit.
Copyright
ã 1998 by FUJITSU LIMITED
1
MB3829
PIN ASSIGNMENT
37: SB
38: CHOICE
39: INH
40: CK
41: RESET
42: CTW
43: CTP
44: CT1
45: ON1
46 : ON2
47 : OFF
Power Controller section
48 : VCC2
Voltage monitoring section
OUT1 : 1
36 : IN
NC : 2
35 : BP
OUT4 : 3
34 : FB
SS : 4
33 : GND4
VCC1 : 5
32 : GND3
(TOP VIEW)
OUT2 : 6
31 : OUTB
CTL2 : 7
30 : OUTA
OUT3 : 8
29 : VCC4
CTL3 : 9
28 : CLK
GND6 : 24
GND5 : 23
VO1 : 22
VO2 : 21
VO3 : 20
VCC5 : 19
VCC3 : 18
25 : IN3
VREF : 17
GND1 :12
TOUT : 16
26 : IN2
CT3 :15
GND2 :11
CT2 : 14
27 : IN1
CLR : 13
BATT1 : 10
(FPT - 48P - M05)
2
Speaker Amp section
Sunder section
MB3829
PIN DESCRIPTION
Pin No.
Power supply
control section
Sounder section
Pin Symbol
I/O
Description
1
OUT1
O
REG1 output pin (3.0 V)
2
NC
-
Unconnected pin (open)
3
OUT4
O
REG4 output pin (3.0 V)
4
SS
-
VREF slow - start capacitance connection pin
5
VCC1
-
Power supply pin for power supply control section
6
OUT2
O
REG2 output pin (3.0 V)
7
CTL2
I
REG2 control pin
In REG1 operating
H level: REG2 operation; L level: REG2 OFF
8
OUT3
O
REG3 output pin (3.0 V)
9
CTL3
I
REG3 control pin
In REG1 operating
H level: REG3 operation; L level: REG3 OFF
10
BATT1
-
Backup battery connection pin
11
GND2
-
Ground pin
12
GND1
-
Ground pin
13
CLR
I
Reset pin for momentary power - loss detection and power restoration section
14
CT2
-
Pin for connecting momentary power - loss evaluation time
setup capacitor
15
CT3
-
Pin for connecting momentary power - loss evaluation time
setup capacitor and resistor
16
TOUT
O
17
VREF
O
Pin for reference voltage output
18
VCC3
-
Power supply pin for momentary power - loss detection and
power - restoration section
19
VCC5
-
Power supply pin for sounder section
20
VO3
O
Output 3 pin (open collector)
21
VO2
O
Output 2 pin (open collector)
22
VO1
O
Output 1 pin (open collector)
23
GND5
-
Ground pin
24
GND6
-
25
IN3
I
Pin for momentary power - loss detection and output (open drain)
Ground pin
Control input 3 pin (H level: VO3 operation)
(Continue)
3
MB3829
(Continued)
Pin No.
Sounder section
Speaker amplifier
section
Voltage monitoring
section
Power supply
control section
4
Pin Symbol
I/O
Description
26
IN2
I
Control input 2 pin (H level: Vo2 operation)
27
IN1
I
Control input 1 pin (H level: Vo1 operation)
28
CLK
I
Clock input pin
29
VCC4
-
Power supply pin for speaker amplifier section
30
OUTA
O
Output A pin
31
OUTB
O
Output B pin
32
GND3
-
Ground pin
33
GND4
-
Ground pin
34
FB
I
Inverted input pin
35
BP
-
Bypass pin
36
IN
I
Non - inverted input pin
37
SB
I
Control input pin (H level: speaker amplifier operation)
38
CHOICE
-
Earphone selection control pin
39
INH
I
Inhibit pin
40
CK
I
Clock input pin
41
RESET
O
Reset output pin
42
CTW
-
Pin for watchdog timer monitoring time setup
43
CTP
-
Pin for power - on reset hold time setup
44
CT1
-
Pin for connecting ON time setup capacitor
45
ON1
I
ON1 pin
46
ON2
I
ON2 pin
47
OFF
I
OFF pin
48
VCC2
-
Power supply pin for ON/OFF switch section
33
GND3 GND4
32
+
FB
34
-
29
VCC4
Bias generator
+ -
IN 36
BP 35
+ Refernce Voltage
38
OUTAOUTB CHOICE
30 31
Control
Speaker amp.
CTP
43
RESET
41
MB3793- 27A
INH
39
CTW
42
timer
Watchdog
40
CK
IN1 IN2 IN3 CLK
27 26 25 28
er
Sound driv-
23
VCC5 GND5
19
1K
GND6
24
momentary power- loss detection and
power- restoration section
Backup section
+
SS 4
++
-
VREF 17
(1.26V)
SB 37
Q
-REG4
+
REG3
REG2
OUT3
(3.0V)
8
+
R
S
OUT2
(3.0V) CTL3
6 9
-
REG1
OUT1 CTL2
(3.0V)
1 7
+
OFF 47
ON/OFF switch
11
12
-
ON2 46
ON1 45
VCC2 48
CT1 44
GND2
GND1
20 VO3
21 VO2
22 VO1
15 CT3
14 CT2
18 VCC3
16 TOUT
13 CLR
10 BATTI
(3.18V)
3 OUT4
(3.0V)
5 VCC1
MB3829
BLOCK DIAGRAM
5
MB3829
Function Descriptions
1. Power supply control section
(1) Reference voltage circuit
The reference voltage circuit generates a temperature- compensated, stable voltage (» 1.26 V). The generated
reference voltage is used as the power supply control section reference voltage or bias.
(2) Series regulator section
A 4 - channel series regulator incorporating a low - saturation output transistor is used. All four channels provide an
output voltage of 3.0 V. Their characteristics are described below.
REG1 is suitable for a microcontroller power supply because it is connected to a power - on reset circuit. It is
controlled by the ON/OFF switch section.
ON/OFF control of REG2 and REG3 is exercised independently by the CTL2 and CTL3 pins while REG1 is ON.
REG4 operates at all times and is therefore suitable for data backup.
REGs 1 through 4 incorporate an overcurrent - protection circuit (REG1 to REG3 » - 100 mA, REG4 » - 25 mA).
(3) Battery backup section
When the main battery is installed, the series regulator recharges a button - type lithium secondary battery, which is
often used to provide backup for clocks and memory. When the main battery is not installed, the backup battery
supplies power to clocks and the battery via a built - in diode. Since the recharging series regulator is set at 3.18 V,
this battery backup section is suitable for manganese and lithium batteries.
(4) ON/OFF switch section
When a time - setup capacitance and resistance are connected to the CT1 pin, the ON1 pin makes it possible to set
the power supply button activation time. This feature prevents turning ON a mobile telephone accidentally.
The ON2 and OFF pins provide a method of exercising direct ON/OFF control of the regulator.
ON time setting calculation formula: TON » - CT1 x RT1 x ln (1 - 1.26V/VCC2)
(5) Momentary power - loss function and power - restoration section
When a time - setup capacitance and resistance are connected to the CT3 pin, a momentary Vcc loss, which may be
caused by battery replacement, etc., will be detected so as to deliver output to the TOUT pin. At power restoration,
the operating state before the momentary power loss is recovered.
After a momentary power loss, the CLR pin resets the prevailing state so that the momentary power - loss detection
circuit retains the latch circuit state.
Momentary power - loss detection time calculation formula: TOFF » - CT3 x RT3 x ln (1 - (2.3V - 0.27V)/2.3V)
6
MB3829
(6) ON/OFF setup conditions for individual channels
ON/OFF switching
section
ON2
OFF
L
H
H
CTL2
CTL3
´
´
L
L
H
L
L
REG1
REG2
REG3
REG4
Battery
backup
ON
ON
OFF (standby mode)
OFF
OFF
ON
OFF
ON
L
H
OFF
ON
H
H
ON
ON
2. Speaker amplifier section
A BTL - output type amplifier is used to drive the speaker directly. The typical output power is as high as 90 mW (at
32 W), and the SB pin provides ON/OFF control.
The CHOICE pin controls earphone selection.
3. Sounder section
This section incorporates three low - saturation output transistors for driving the buzzer. IN1, IN2, and IN3 are used
to select the output transistor.
4. Voltage monitoring section
This section incorporates the REG1 output voltage detection function and watchdog timer function. It outputs a reset
signal to the RESET pin. Further, the detection time varies with the capacitance connected to the CTP and CTW
pins.
7
MB3829
ABSOLUTE MAXIMUM RATINGS
Parameter
Common to all
sections
Power supply control
amplifier
Unit
Value
Condition
Power-supply voltage
VCC
—
10
V
Power dissipation
PD
TA £ +25°C
860*
mW
Storage temperature
Tstg
—
- 50 to +125
°C
IO1 to IO3
—
- 60
mA
IO4
- 12
mA
Output current
IO
150
mA
Output current
IO1
Duty = 50%
240
mA
IO2
Duty = 50%
120
mA
IO3
Duty = 50%
60
mA
IOL, IOH
DC
- 10 to 10
mA
Output current
section
Speaker
Symbol
section
Sounder section
Voltage monitoring
section
Reset output current
*: Value as mounted on double-sided epoxy board 10 ´ 10 cm
NOTE: Permanent device damage may occur if the above Absolute Maximum Ratings are exceeded. Functional operation should be
restricted to the conditions as detailed in the operational sections of this data sheet. Exposure to absolute maximum rating conditions
for extended periods may affect device reliability.
RECOMMENDED OPERATING CONDITIONS(1)
Parameter
Common
to all sections
8
Symbol
Condition
Power supply voltage
VCC
Power supply voltage buildup time
Operation temperrature
Value
Unit
Min.
Typ.
Max.
—
3.49
—
8.0
V
TVCC
—
50
—
—
mS/V
TA
—
- 30
25
85
°C
MB3829
RECOMMENDED OPERATING CONDITIONS(2)
Power
supply
control
section
Speaker
amplifier
section
Sounder
section
Voltage
monitoring
section
Parameter
Symbol
Condition
Control input voltage
VI
Value
Unit
Min.
Typ.
Max.
—
0
—
VCC
V
IO1 to IO3
—
- 50
—
—
mA
IO4
—
- 10
—
—
mA
Backup current
IBATT1
—
—
—
200
mA
CLR input pulse width
TCLR
—
200
—
—
ns
OFF input pulse width
TOFF
CT3 = 2.2 mF, RT3 = 1MW
10
—
—
ms
ON2 input pulse width
TON2
—
10
—
—
ms
ON setting
time setup
Capacitance
CT1
—
—
1.5
—
mF
Resistance
RT1
—
—
1
—
MW
Momentary
power - loss
time setup
Capacitance
CT3
—
—
2.2
—
mF
Resistance
RT3
—
—
1
—
MW
Control input voltage
VI
—
0
—
VCC
V
Amplifier input voltage
VIN
—
0.3
—
VCC - 0.8
V
Load resistance
RL
—
8
32
200
W
Gain setting range
AV
When Non - INV input
6
24
36
dB
When INV input
- 26
- 20
36
dB
Output current
Control input voltage
VI
—
0
—
VCC
V
Output current
IO1
Duty = 50%
—
—
200
mA
IO2
Duty = 50%
—
—
100
mA
IO3
Duty = 50%
—
—
50
mA
IOL, IOH
—
-3
—
3
mA
Reset/hold time setup capacitance
CTP
—
0.001
—
10
mF
Clock monitoring time setup
capacitance
CTW
—
0.001
—
1
mF
Clock monitoring time setting
TWD
—
0.1
—
1500
ms
RESET output current
Note: The recommended operating conditions are the recommended values guaranteeing normal LSI operations. The specified
values for electrical characteristics are guaranteed when the conditions in the ”Condition” column, as well as the recommended
operating conditions, are met.
9
MB3829
ELECTRICAL CHARACTERISTICS
1. Power supply control section
(VCC1,2,3 = +3.6V, TA = +25°C)
Parameter
Reference Reference voltage
voltage
section
Constant
Voltage
Controller
(REG1)
Output voltage
Max.
Unit
1.26
1.29
V
VO
IO=0mA
2.90
3.00
3.13
V
VO
IO= - 50mA
2.90
3.00
3.13
V
—
0.15
0.27
V
*
—
1
2
%
Line
VCC=3.49V to 8V,IO= - 10mA
—
10
50
mV
Load
IO=0mA to - 50mA
—
10
50
mV
R.R
VIN=0.2Vrms,
f=25Hz
*
38
50
—
dB
IO= - 10mA
f=1kHz
*
23
35
—
dB
*
—
250
410
ms
D VO/VO
IO= - 22mA, VCC=3V
TA= - 30 to +85 °C
Rise time
TR
C=10mF, R=60W
Output voltage
VO
IO=0mA
2.90
3.00
3.13
V
VO
IO= - 50mA
2.90
3.00
3.13
V
—
0.25
0.45
V
*
—
1
2
%
Output saturation voltage
Temperature regulation of
output voltage
VSAT
D VO/VO
IO= - 40mA, VCC=3V
TA= - 30 to +85 °C
Input stability
Line
VCC=3.49V to 8V,IO= - 10mA
—
10
50
mV
Load stability
Load
IO=0mA to - 50mA
—
10
50
mV
Ripple removal ratio
R.R
VIN=0.2Vrms,
IO= - 10mA
f=25Hz
*
38
50
—
dB
f=1kHz
*
23
35
—
dB
Input - on condition
VON
-
2.0
—
VCC
V
Input - off condition
VOFF
-
0
—
0.8
V
Input current
Rise time
*: Guaranteed by design
10
Typ.
1.23
VSAT
Ripple removal ratio
Min.
IO=0mA
Temperature regulation of
output voltage
Load stability
Value
Condition
VREF
Output saturation voltage
Input stability
Constant
Voltage
Controller
(REG2,3)
Symbol
IIH
VI=3.0V
—
17
30
mA
IIL
VI=0.4V
1
2
3
mA
TR
C=10mF, R=60W
—
250
410
ms
*
MB3829
(VCC1,2,3 = +3.6V, TA = +25°C)
Parameter
Constant
Voltage
Controller
(REG4)
Output voltage
Output saturation voltage
Temperature regulation of
output voltage
ON/OFF
switch
section
Typ.
Max.
Unit
IO=0mA
2.90
3.00
3.13
V
VO
IO= - 10mA
2.90
3.00
3.13
V
—
0.05
0.1
%
—
1
2
mV
—
10
50
mV
VSAT
IO= - 2mA, VCC=3V
TA= - 30 to +85 °C
Line
VCC=3.49V to 8V
Load stability
Load
IO=0mA to - 10mA
Rise time
Min.
VO
D VO/VO
Output leakage current
Value
Condition
Input stability
Ripple removal ratio
Backup
Section
Symbol
R.R
ILEAK
TR
*
VIN=0.2Vrms,
f=25Hz
*
IO= - 2mA
f=1kHz
*
VCC1=0 to 2.97V,
VBATT1=0V, VO4=3V
C=10mF, R=300W, SS=1nF
*
—
10
50
dB
38
50
—
dB
4
16
—
V
—
1.2
10
mA
—
900
1450
ms
3.10
3.18
3.25
V
—
- 1.18
- 0.59
mA
0.52
0.57
0.62
V
—
2.1
10
mA
Output voltage
VBATT1
IBATT1=0mA
Charging current
IBATT1
VBATT1=2.0V
Output saturation voltage
D VO
VCC1=0V, IO4= - 20mA
Output leakage current
ILEAK
VCC1=0 to 2.97V,
VBATT1=3V, VO4: Short circuited to VBATT1
Input - on condition
VON
-
2.0
—
VCC
V
Input - off condition
VOFF
-
0
—
0.8
V
—
17
30
mA
1
2
3
mA
1.21
1.26
1.31
V
Input current
IIH
VI=3.0V
IIL
VI=0.4V
*
Threshold voltage
VTH
CT1 pin
CT3 output resistance
RON
OFF=H
0.5
1
1.5
kW
ON setup time
TON
CT1=1.5mF, RT1=1MW
550
650
750
ms
*: Guaranteed by design
11
MB3829
(VCC1,2,3 = +3.6V, TA = +25°C)
Parameter
Instantaneous Detection voltage
Detection/
Instantaneous detection time
Power
Restoration
Input - on condition
Section
Input - off condition
Input current
Power
supply
control
section
Symbol
Condition
Value
Min.
Typ.
Max.
Unit
VTHL
VCC pin
1.90
2.2
2.5
V
TOFF
CT3=2.2mF, RT3=1MW
4.0
4.7
5.5
s
VON
CLR pin
2.0
—
VCC
V
VOFF
CLR pin
0
—
0.8
V
IIH
VI=3.0V
—
17
30
mA
IIL
VI=0.4V
1
2
3
mA
Output leakage current
ILEAK
VCC1,2,3 = VO=8V
—
—
10
mA
Output saturation voltage
VSAT
IO=100mA
—
0.1
0.3
V
ICC1
REG1 to REG3 : OFF
IO4= - 100mA
IBATT1= - 200mA
—
60
90
mA
ICC2
REG2,3 : OFF
IO1= - 11mA, IO4= - 100mA
IBATT1= - 200mA
—
160
240
mA
—
190
280
mA
—
360
530
mA
—
160
240
mA
Stand - bycurrent
Power - off current
Power - oncurrent
Power - oncurrent
Power - oncurrent
ICC3
ICC4
ICC5
REG3 : OFF
IO1= - 11mA, IO2= - 30mA
IO4= - 100mA
IBATT1= - 200mA
IO1= - 11mA, IO2= - 40mA
IO3= - 12mA, IO4= - 100mA
IBATT1= - 200mA
IO1 to IO4, IBATT1 : No load
Note: The Icc1 to Icc5 values for the whole power supply control section represent the sum of Vcc1 to Vcc3 pin current values except the load
current.
12
MB3829
2. Speaker amplifier section
(VCC1,2,3 = +3.6V, TA = +25°C)
Parameter
Speaker
amplifier
section
Voltage gain
Release voltage gain
AV
Value
Condition
Non - INV input
*
Unit
Min.
Typ.
Max.
22
24
26
dB
AVO
f £ 100 Hz
—
80
—
dB
Output power
PD
RL = 32 W, THD = 10 %
60
90
—
mW
Output voltage
VO
No load
3.8
5.5
—
V
- 50
—
50
mV
—
0.5
1.0
%
33
45
—
dB
—
—
0.25
s
16
18
20
dB
1.4
2.75
—
V
—
—
0.25
s
Offset voltage between output
VOO
Distortion rate of all high frequencies
THD
Ripple extraction ratio
Earphone
Symbol
PSRR
Rise time
TR
Voltage gain
AVI
Output voltage
VOI
Rise time
TR
PO ³ 25 mW
-
*
PO ³ 25 mW, BP=4.7mF *
No load
PO ³ 6 mW, BP=4.7mF
*
Input impedance
RIN
-
20
30
50
kW
Input - ON condition
VON
-
2.0
—
VCC
V
Input - OFF condition
VOFF
-
0
—
0.8
V
Input current
IIH
VSB=3.0V
—
17
30
mA
IIL
VSB=0.4V
—
0
1
mA
—
0
10
mA
Power - supply current at standby
ICC1
Power - supply current at no load
(Speaker mode)
ICC2
When no signal
—
3
5
mA
Power - supply current at no load
(Earphone mode)
ICC3
When no signal
—
1.5
2.5
mA
-
Speaker ON condition
VSON
-
0
—
0.8
V
Earphone ON condition
VEON
-
2.0
—
VCC
V
*: Guaranteed by design
13
MB3829
3. Sounder
(VCC5 = +3.6V, TA = +25°C)
Parameter
Condition
Value
Min.
Typ.
Max.
Unit
VO1
IO1 = 200 mA
—
0.3
0.5
V
VO2
IO2 = 100 mA
—
0.3
0.5
V
VO3
IO3 = 50 mA
—
0.3
0.5
V
Output leakage current
ILEAK
VCC1,2,3=VO = 8 V
—
—
10
mA
Input - ON condition
VON
-
2.0
—
VCC
V
Input - OFF condition
VOFF
-
0
—
0.8
V
Output voltage
Input current
14
Symbol
IIH
VI = 3.3 V
—
34
60
mA
IIL
VI = 0.4 V
2
4
6
mA
—
2
10
mA
Power - supply current at standby
ICC1
Power - supply current at no load
ICC2
VIN1 = 3.0 V, CLK Duty = 50%
—
3.0
4.5
mA
ICC3
VIN2 = 3.0 V, CLK Duty = 50%
—
1.5
2.3
mA
ICC4
VIN3 = 3.0 V, CLK Duty = 50%
—
0.8
1.2
mA
-
MB3829
4. Voltage monitoring section
(OUT1 = +3.0V, TA = +25°C)
Parameter
Symbol
Detection voltage
Detection voltage hysteresis width
CK input threshold voltage
CK input hysteresis width
Inhibit input voltage
Input current
Reset output voltage
Reset output minimum voltage
CK
IHB
Value
Condition
Min.
Typ.
Max.
Unit
VSL
OUT1 fall
2.70
2.75
2.81
V
VSH
OUT1 rise
2.76
2.81
2.87
V
VSHYS
VSH - VSL
35
65
95
mV
VCIH
-
0.6
1.2
1.8
V
VCIL
-
0.4
0.9
1.4
V
VCHYS
-
0.1
0.3
0.6
V
VIIH
-
1.8
—
—
V
VIIL
-
—
—
0.8
V
IINH
VIN = OUT1
—
0
1.0
mA
IINL
VIN = GND
- 1.0
0
—
mA
VOH
IRESET = - 3mA
2.5
2.8
—
V
VOL
IRESET = +3mA
—
0.12
0.4
V
VCCL
IRESET = +50mA
—
0.8
1.2
V
Power - on reset hold time
tPR
CTP = 0.1mF
25
70
115
ms
Watchdog timer monitoring time
tWD
CTW=0.01mF, CTP=0.1mF
8
16
24
ms
Watchdog timer reset time
tWR
CTP = 0.1mF
1.5
5
8.5
ms
Clock input pulse width
tCKW
-
*
500
—
—
ns
Clock input pulse cycle
tCKT
-
*
20
—
—
ms
RESET rise time
tr *1
CL = 50pF
*
2.0
—
500
ns
RESET fall time
tr *1
CL = 50pF
*
—
—
500
ns
Delay time from OUT1
TPD
*
—
2
20
ms
OUT1 input pulse width
TPI
1.2V to 2.5V *
16
—
—
ms
-
*1: The voltage range prevailing during RESET output rise/fall time measurement is from 10% to 90%
*: Guaranteed by design
15
MB3829
TYPICAL CHARACTERISTICS CURVE
Allowable dissipation vs. ambient temperature curve
Allowable dissipation PD [mW]
1000
800
LQFP
600
400
200
0
- 40
- 20
0
20
40
60
Ambient temperature TA [°C]
16
80
100
MB3829
VOLTAGE MONITORING SECTION TIMING CHART
OUT1
VSH
VSL
VCCL
t
CKW
CK
INH
CTP
VH
CTW
VL
t
PR
RESET
(1)
(2)
t
WD
(3) (4) (5)
t
WR
(6) (7)
t
PR
(8)
(9)
(10)
(11)
(12)
(13) (14)
17
MB3829
DESCRIPTION OF OPERATION
(The numbers in the timing diagram correlate to the numbers (1) to (13) below.)
(1) When the REG1 output voltage (OUT1) is about 0.8 V (VCCL), the reset signal is output.
(2) When OUT1 reaches a level higher than the detection voltage (VSH), the power - on reset/hold time setup capacitor (CTP) begins to charge. The VSH value is 2.81 V.
(3) When the power - on reset/hold time setup pin (CTP) voltage rises above the threshold level (Vth), the reset
clears (RESET pin voltage changes from L level to H level). The Vth value is about 1.9 V.
The power - on reset/hold time (tPR) is expressed by the following equation.
Also, the watchdog timer monitoring time setup capacitor (CTW) begins to charge.
tPR [ms] » A x CTP [mF]
A » 700
(4) When the watchdog timer monitoring time setup pin (CTW) voltage reaches the Hi level (VH), the CTW changes
from the charged state to the discharged state. The VH value is about the reference voltage of 1.24 V.
(5) When a clock pulse input is applied to the clock pin (CK) and then the next clock pulse input is applied (positive
edge trigger) to the CK pin during a CTW discharge, switching from the discharged state to the charged state
occurs.
(6) If a clock pulse input is not delivered to the clock pin (CK) within the watchdog timer monitoring time (tWD), the
CTW pin voltage falls below the Lo level (VL) so the reset signal is output (RESET pin voltage changes from H
level to the L level).
The VL value is about 0.24 V.
The watchdog timer monitoring time (tWD) is expressed by the following equation.
tWD [ms] » B x CTW [mF]
B » 1600
(7) When the CTP is recharged to raise the CTP pin voltage above Vth, the reset clears, allowing the watchdog timer
to start running.
The watchdog timer monitoring reset time (tWR) is expressed by the following equation.
tWR [ms] » D x CTP [mF]
B » 50
(8) When the OUT1 drops below the fall period detection voltage (VSL), the CTP pin voltage falls so that the reset
signal is output (RESET pin voltage changes from H level to the L level).
The VSL value is about 2.75 V.
(9) When the OUT1 rises above VSH, CTP charging starts.
(10) When the CTP pin voltage rises above Vth, the reset clears, causing the watchdog timer to start running.
(11) When the inhibit signal is input (Hi level), the watchdog timer operation is forcibly stopped.
In this case, only the watchdog timer stops and the OUT1 monitoring operations ((8) to (10)) are performed. If
the inhibit input does not clear, the watchdog timer does not operate.
(12) When the inhibit input clears (becomes Lo level), the watchdog timer begins to operate.
(13) When the REG1 output turns OFF and OUT1 falls below VSL, the reset signal is output.
18
MB3829
REG SECTION RISE TIMING REQUIREMENTS
VCC
ON2
CTL2
CTL3
TR
REG1
90%
TR
REG2
90%
TR
REG3
90%
TR
90%
REG4
SPEAKER AMPLIFIER SECTION RISE TIMING REQUIREMENTS
VCC4=VSB CHOICE=”L” (BP=4.7mF)
Speaker output = 25mW
Speaker output
TR
VCC4=VSB =CHOICE
(BP=4.7mF)
Earphone output = 6mW
Earphone output
0V
TR
19
20
1.5mF
3.6V
0.1mF
10mF
Control
signal
Control
signal
1M W
VCC2
(3.6V)
CT1
SS
4
1mF
2.2kW
29
36 IN
VCC4
35 BP
37 SB
VREF
17 (1.26V)
OFF
47
46 ON2
3.6V
12
11
OUT1
1
CTL2
7
34
FB
15kW
32
33
30
31
GND3 GND4 OUTA OUTB
CTL3
9
43
41
39
INH
Control
signal
CTP RESET
40
CK
26
25
Control
signal
27
OUT4
3
3.6V
28
19
23
24
CLK VCC5 GND5 GND6
Sounder section
IN1 IN2 IN3
From
microcontroller
42
CTW
Voltage monitoring
section
MB3829
8
OUT3
Voltage control section
OUT2
6
Control
signal
Power- on reset signal
(to microcontroller)
Control
signal
38
CHOICE
Speaker amplifier section
VCC2 GND1 GND2
45 ON1
44
48
Control
signal
VO3 20
VO2 21
VO1 22
CT2 14
CT3 15
CLR 13
TOUT 16
VCC3 18
BATTI 10
(3.18V)
VCC1 5
100kW
OUT1
(3.0V)
Backup battery
Memory
Receiver
150W
50W
10W
20pF
15mF
2.2mF
Buzzer
1kW
VCC5
1MW
Momentary powerloss detection signal
(to microcontroller)
From
microcontroller
3.6V
3.6V
Transmitter
Microcontroller
MB3829
APPLICATION CIRCUIT
MB3829
USAGE PRECAUTIONS
1. Device settings must not exceed the maximum ratings.
Usage under conditions exceeding absolute maximum ratings may permanently damage LSI devices.
Note also that in normal operation usage within recommended operating conditions is preferred, and that the
reliability of LSI devices may be adversely affected when used outside these conditions.
2. Devices should be used within recommended operating conditions.
Recommended operating conditions are recommended values within which the LSI device is warranted to operate
normally.
Rated values of electrical characteristics are warranted within the range of recommended operating conditions and
within the conditions listed in the condition column for each parameter.
3. The PC board ground line must be designed by taking the common impedance.
4. Guard against static electricity.
The semiconductor containers must be protected against static electricity or made of conductive materials.
When storing or transporting a component - mounted PC board, place it in a conductive bag or container.
Ensure that the workbenches, tools, and measuring instruments are grounded.
Workers must be grounded via a series resistance of 250 kW to 1 MW.
ORDERING INFORMATION
Part number
MB3829PFV- G - BND
Package
Remarks
Plastic, LQFP, 48 - pin
(FPT - 48P - M05)
21
MB3829
PACKAGE DIMENSIONS
48-LEAD PLASTIC FLAT PACKAGE
(CASE No.: FPT-48P-M05)
36
.354±.008 SQ
(9.00±0.20)
.276±.004 SQ
(7.00±0.10)
+.008
.059 - .004
(MOUNTING HEIGHT)
(1.50+0.20 )
- 0.10
25
37
24
.315(8.00)
NOM
.217(5.50)
REF
INDEX
13
48
LEAD No.
”A”
+.002
.005 - .001
(0.127 +0.05 )
- 0.02
12
1
+.003
.007 - .001
(0.18+0.08 )
- 0.03
.0197±.0031
(0.50±0.08)
Details of “A” part
.004±.004
(STAND OFF
(0.10±0.10) HEIGHT)
.004(0.10)
ã1991 FUJITSU LIMITED F48013S-2C
22
0°to10°
.020±.008
(0.50±0.20)
Dimensions in
inches (millimeters)
MB3829
MEMO
All Rights Reserved.
Circuit diagrams utilizing Fujitsu products are included as a means of illustrating
typical semiconductor applications. Complete information sufficient for construction purposes is not necessarily given.
The information contained in this document has been carefully checked and is
believed to be reliable. However, Fujitsu assumes no responsibility for inaccuracies.
The information contained in this document does not convey any license under the
copyrights, patent rights or trademarks claimed and owned by Fujitsu.
Fujitsu reserves the right to change products or specifications without notice.
No part of this publication may be copied or reproduced in any form or by any
means, or transferred to any third party without prior written consent of Fujitsu.
23
MB3829
For further information please contact:
Japan
FUJITSU LIMITED
Corparate Grobal Business Support Div.,
Electronic Devices
4 - 1 - 1 Kamikodanaka, Nakahara- ku, Kawasaki- shi,
Kanagawa - ken 211 - 8588, Japan
Tel: (044) 754 - 3763
FAX: (044) 754 - 3329
North and South America
FUJITSU MICROELECTRONICS, INC.
Integrated Circuits Division
3545 North First Street
San Jose, CA 95134-1804, USA
Tel: (408) 922 - 9000
FAX:(408) 922 - 9179
Europe
FUJITSU MIKROELEKTRONIK GmbH
Am Siebenstein 6-10,
63303 Dreieich-Buchschlag,
Germany
Tel: (06103) 690-0
FAX: (06103) 690-122
Asia
FUJITSU MICROELECTRONICS ASIA PTE LIMITED
#05 - 08, 151 Lorong Chuan
New Tech Park
Singapore 556741
Tel: (65) 281 - 0770
FAX: (65) 281 - 0220
ã FUJITSU LIMITED 1998
24
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