MITSUMI
Composite Regulator MM1448
Composite Regulator
Monolithic IC MM1448
Outline
This IC was developed as a composite power supply for the RF section of mobile telephones. It is composed
of three normal voltage regulator circuits, of which the output of one circuit is divided for two switching
circuits.
The regulator output voltage is fixed, and each can be set between 2.0V and 5.0V according to the
customer's needs. Output noise voltage noise reduction is made possible by using the noise reduction pin.
Also, switch pins are provided to control each output, making this an ideal IC for use in portable equipment.
Features
1. Input/output voltage difference
Vo1 : 0.2V max. Vo2 : 0.2V max. Vo3 : 0.3V max.
2. Output noise voltage
Vo1 : 30Vrms typ. Vo2 : 30Vrms typ. Vo3 : 30Vrms typ.
3. Output voltage precision
Vo1, Vo2, Vo3 : 3%
4. No-load input current
Vo1 : 170A typ. Vo2 : 170A typ. Vo3 : 170A typ.
5. Input voltage
12V max.
6. Max. output current
200mA max.
7. Output ON/OFF control
High : ON, Low : OFF
Package
VSOP-16
Applications
1. Mobile telephones, PHS
2. Video cameras
3. Portable communication equipment
4. Battery-powered portable equipment
MITSUMI
Rank Table
Rank
Regulator Output Voltage
V
O
1
V
O
2
V
O
3
X
2.5 0.08
2.8 0.08
3.0 0.08
B
2.8 0.08
2.8 0.08
3.0 0.08
C
2.9 0.08
2.9 0.08
2.9 0.08
MITSUMI
Composite Regulator MM1448
MITSUMI
Equivalent Circuit Diagram
Absolute Maximum Ratings
Item
Symbol
Rating
Unit
Storage Temperature
T
STG
-40~+125
C
Operating Temperature
T
OPR
-20~+75
C
Power Supply Voltage
V
IN
-0.3~+12
V
Output Current (1 circuit)
I
O (
n
)
200
mA
Power Consumption
Pd
400 (IC only)
mW
Recommended Operating Conditions
Item
Symbol
Rating
Unit
Operating Temperature
T
OP
-20~75
C
Operating Voltage
V
OP
1.8~12
V
Regulator Output Current (1 circuit)
I
O (
n
)
0~100
mA
Pin Assignment
VSOP-16
(TOP VIEW)
1
3
7
6
2
4 5
8
16
13
11
15 14
12
9
10
1
V
O
1
9
V
O
2
2
NS1
10
GND
3
PS1
11
PS4
4
V
IN
12
V
O
4
5
PS3
13
NC
6
NS3
14
V
O
5
7
PS2
15
PS5
8
NS2
16
V
O
3
MITSUMI
Composite Regulator MM1448
MITSUMI
Electrical Characteristics
Typical model : MM1448B (Except where noted otherwise, Ta=25C, V
IN
=4V, C
IN
=10F, C
VO (
n
)
=4.7F+1
, C
ns (
n
)
=0.01F)
Item
Symbol
Measurement conditions
Min. Typ. Max. Unit
Standby current
Iins
V
PS
1=V
PS
2=V
PS
3=0V
0
3
A
No-load (unload)
Operating currents 1~3
I
IN
1~3
V
PS
1=3V, V
PS
2=V
PS
3=V
PS
4~V
PS
5=0V
170
350
A
(for 1 circuit; all
V
PS
2=3V, V
PS
1=V
PS
3=V
PS
4~V
PS
5=0V
3 circuits the same)
V
PS
3=3V, V
PS
1=V
PS
2=V
PS
4~V
PS
5=0V
V
O
1
Output voltage
V
O
1
Io1=30mA
2.72
2.80
2.88
V
Minimum input/
output voltage difference
Vdmin1
V
IN
=2.6V, Io1=30mA
0.20
V
Load fluctuation
VLo1
Io1=0~100mA
60
mV
Input fluctuation
VLi1
V
IN
=4.0~8.0V, Io1=30mA
20
mV
Output voltage
temperature coefficient
V
O
1/ T
Tj=-20~75C, I
O
1=30mA
100
ppm/C
Ripple rejection rate
RR1
f=120Hz, V
RIPPLE
=1V
P-P
, Io1=30mA
50
60
dB
Output noise voltage
Vn1
f=10Hz~10kHz, Io1=30mA, Cns1=0.01F
30
60
Vrms
Output rise time
TdH1
Io1=30mA, V
PS
1=0 4V
0.04
0.8
ms
V
O
2
Output voltage
V
O
2
Io2=30mA
2.72
2.80
2.88
V
Minimum input/
output voltage difference
Vdmin2
V
IN
=2.6V, Io2=30mA
0.20
V
Load fluctuation
VLo2
Io2=0~100mA
60
mV
Input fluctuation
VLi2
V
IN
=4.0~8.0V, I
O
2=30mA
20
mV
Output voltage
temperature coefficient
V
O
2/ T
Tj=-20~75C, I
O
2=30mA
100
ppm/C
Ripple rejection rate
RR2
f=120Hz, V
RIPPLE
=1V
P-P
, Io2=30mA
50
60
dB
Output noise voltage
Vn2
f=10Hz~10kHz, Io2=30mA, Cns2=0.01F
30
60
Vrms
Output rise time
TdH2
Io2=30mA, V
PS
2=0 4V
0.04
0.8
ms
V
O
3
Output voltage
V
O
3
Io3=30mA
2.92
3.00
3.08
V
Minimum input/
output voltage difference
Vdmin3
V
IN
=2.8V, Io3=30mA
0.20
V
Load fluctuation
VLo3
Io3=0~100mA
60
mV
Input fluctuation
VLi3
V
IN
=4.0~8.0V, I
O
3=30mA
20
mV
Output voltage
temperature coefficient
V
O
3/ T
Tj=-20~75C, I
O
3=30mA
100
ppm/C
Ripple rejection rate
RR3
f=120Hz, V
RIPPLE
=1V
P-P
, Io3=30mA
50
60
dB
Output noise voltage
Vn3
f=10Hz~10kHz, Io3=30mA, Cns3=0.01F
30
60
Vrms
Output rise time
TdH3
Io3=30mA, V
PS
3=0 4V
0.04
0.8
ms
V
O
4
Output voltage
V
O
4
Io3=Io4=20mA, Io5=40mA
2.82
V
O
3
V
Output current
I
O
4
V
O
4=2.72V, Io3=Io5=0mA
50
mA
Output rise time
TdH4
Io4=20mA, C
VO
4=1F, V
PS
4=0 4V
0.02
0.1
ms
Reactive current
Iq4
I
O
4=20mA, V
O
3=3V
0.5
0.8
mA
V
O
5
Output voltage
V
O
5
Io3=Io4=20mA, Io5=40mA
2.82
V
O
3
V
Output current capacity
I
O
5
V
O
5=2.72V, Io3=Io4=0mA
80
mA
Output rise time
TdH5
Io5=40mA, C
OUT
5=1F, V
PS
5=0 4V
0.02
0.1
ms
Reactive current
Iq5
I
O
5=40mA, V
O
3=3V
2
2.8
mA
PS output control pin
Psn pin OFF voltage
V
OFF
0.4
V
Psn pin ON voltage
V
ON
1.6
V
Psn pin inflow current
I
PS
n
V
PS
n=1.6V
10
A
MITSUMI
Composite Regulator MM1448
MITSUMI
Note 1: Output capacitance definitely is required to perform regulator and switch phase compensation. Also,
please note that oscillation may occur depending on the ESR value.
Note 2: Vo pin output noise voltage is reduced using NS pin capacitance value. Even if there is no need to
take output noise voltage into consideration, connection of a capacitor is recommended for stable
operation and improvement of AC characteristics.
Note 3: The cause of oscillation is due to set wiring and capacitance changes in capacitor caused by
temperatures changes, so please take extra care in placing the wires.
Measurement Circuit
Input-Output Differential Voltage
Line Regulation
250
200
150
100
50
0
0
50
100
150
Output current (mA)
Input-Output
Differential Voltage (mV)
20
10
0
-10
-20
4
6
8
10
12
V
IN
(V)
Line regulation (mV)
Characteristics
MITSUMI
Composite Regulator MM1448
MITSUMI
Output Current
ESR Stable Region
4
3
1
2
0
0
100
200
300
Output current (mA)
Output voltage (V)
I
OUT
(mA)
ESR (
)
1000
100
1
0.1
10
0.01
0.01
0.1
1
10
100
Area of stable operation (Stable Region)
Unmeasurement Region
Instability Region
I
O
4 (5) -
V
O
34 (35)(V
O
3=3V)
I
O
(A)
5.00E-01
4.00E-01
3.00E-01
2.00E-01
1.00E-01
0.00E+00
0
0.02
0.04
0.06
0.08
0.1
V
O
(V)
V
O
4
V
O
5
I
O
4 (5) -
Iq
4 (5)(V
O
3=3V)
I
O
(A)
6.00E-03
5.00E-03
4.00E-03
3.00E-03
2.00E-03
1.00E-03
0.00E+00
0
0.02
0.04
0.06
0.08
0.1
Iq (A)
V
O
4
V
O
5
Load Regulation
Thermal Shutdown
60
40
20
0
-40
-20
-60
0
50
100
Output current (mA)
Load regulation (mV)
4
3
1
2
0
0
50
100
150
200
Temperature (
C)
Output voltage (V)
Note: Reference data
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