MITSUMI
Microminiature Low-Power Consumption Low-Saturation Regulator MM1385
Microminiature Low-Power Consumption Low-Saturation Regulator
Monolithic IC MM1385
Outline
This IC is a microminiature stabilized power supply device featuring an output voltage precision of within 2%
and output currents of up to 200mA; the input/output voltage difference at 50mA is only 0.1V.
This chip is provided with an output noise reduction pin and output on/off control pin, and is ideal for use in
portable equipment.
Features
1. No-load input current
95A typ.
2. I/O voltage difference
0.1V typ.(Io=50mA)
3. Ripple rejection ratio
70dB typ.
4. Output current
150mA max.
5. Output noise voltage
35Vrms typ.
6. Output voltage rank
2~3.3V(0.1V step), 3.5V/3.8V/4V/4.2V/4.5V/4.8V/5V/5.2V
7. Output on/off control
High ON, Low OFF
Package
SOT-25A (MM1385 N)
*
The output voltage rank appears in the boxes.
Pin Assignment
1
3
5
2
4
SOT-25A
(TOP VIEW)
Applications
1. Cordless phones
2. Portable phones, PHS
3. Portable minidiscs
4. Other portable equipment which uses batteries
1
C
ONT
2
GND
3
NOISE
4
V
OUT
5
V
IN
MITSUMI
Microminiature Low-Power Consumption Low-Saturation Regulator MM1385
Block Diagram
Absolute Maximum Ratings
Recomnended Operating Conditions
Item
Symbol
Ratings
Units
Storage temperature
T
STG
-40~+125
C
Operating temperature
T
OPR
-20~+75
C
Power supply current
V
CC
-0.3~+12
V
Output current
I
OUT
200
mA
Power consumption
Pd
150
mW
Item
Symbol
Ratings
Units
Operating temperature
Top
-20~+75
C
Output current
Iop
0~150
mA
Operating voltage
Vop
1.8~12
V
MITSUMI
Microminiature Low-Power Consumption Low-Saturation Regulator MM1385
Measuring Circuit
Electrical
Electrical Characteristics
(Except where noted otherwise,Ta=25C)
Item
Symbol
Measurement conditions
Min. Typ. Max. Units
Output voltage
Vo
V
IN
=Vo+1V, Io=30mA,
V
OUT
V
No-load consumption current
Iccq1
V
IN
=Vo+1V, Io=0mA
95
190
A
Input current while off
Iccq2
V
IN
=Vo+1V, V
CONT
=0V
0.1
A
I/O voltage difference
Vd min.
V
IN
=Vo-0.2V, Io=50mA
0.1
0.2
V
Input fluctuations
V1
V
IN
=Vo+1V~10V, Io=50mA
10
20
mV
Load fluctuation
V2
V
IN
=Vo+1V, Io=0~100mA
30
60
mV
Output voltage temperature coefficient
Vo/ T
Tj=-20~+75C, V
IN
=Vo+1V, Io=30mA
100
ppm/C
Ripple rejection rate
RR
V
IN
=Vo+1V, Io=30mA, V
RIPPLE
=1V
P-P
, f=120Hz
50
70
dB
Output noise voltage
Vn
V
IN
=Vo+1V, f=20~80kHz, Io=30mA, Cn=0.01F
Vrms
C
ONT
pin current while on
I
ON
V
CONT
=1.6V
5
10
A
C
ONT
pin high level
H
1.6
V
C
ONT
pin low level
L
-0.3
0.4
V
V
OUT
-2%
V
OUT
+2%
35
(3V item)
V
IN
+0.3V
Output Voltage Rank
Rank
Voltage
Rank
Voltage
W
5.2V
G
3.1V
A
5.0V
H
3.0V
Q
4.9V
J
2.9V
Z
4.8V
K
2.8V
X
4.6V
L
2.7V
B
4.5V
M
2.6V
V
4.2V
N
2.5V
C
4.0V
P
2.4V
Y
3.8V
R
2.3V
I
3.6V
S
2.2V
D
3.5V
T
2.1V
E
3.3V
U
2.0V
F
3.2V
MITSUMI
Microminiature Low-Power Consumption Low-Saturation Regulator MM1385
No-load input current
Ripple rejection rate
(V
IN
=4V, I
O
=30mA, Vripple=1V, C
OUT
=4.7F)
0
2
4
6
8
10
0
0.5
1
0
2
6
8
10
1.5
2
Input voltage (V)
Consuption current
(mA)
10
100
1k
10k
100k
1M
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
Frequency (Hz)
Ripple rejection rate
(Hz)
Consuption current (V
IN
=4V)
Output noise voltage
(V
IN
=4V, I
O
=30mA, C
OUT
=4.7F)
0
0
0
20
40
60
80 100 120 140 160
0
1
2
3
4
5
6
7
8
9
Output current (mA)
Consuption current
(mA)
0.1
0.01
0.001
0
20
40
60
80
100
Noise pin capacitance (
F)
Output noise
voltage (
Vrms)
I/O voltage difference (V
IN
=2.8V)
Input fluctuation (I
O
=30mA)
0
0
0.05
0.1
0.15
0.2
0.25
0.3
0
20 40 60 80 100 120 140 160 180 200
Output current (mA)
I/O voltage difference
(V)
4
5
6
7
8
9
10 11 12 13 14
-20
-10
0
10
20
Input voltage (V)
Input fiuctuation
(mV)
Current limit (V
IN
=4V)
Load fluctuation rate (V
IN
=4V)
0
50
100
150
200
250
300
0
0.5
1
1.5
2
2.5
3
3.5
Output current (mA)
Output voltage (V)
0
20 40 60 80 100 120 140 160 180 200
-60
-50
-40
-30
-20
-10
0
10
20
Output current (mA)
Load fiuctuation rate
(mV)
Characteristics
(Represent data. H rank)
ESR Stable region
V
IN
=0~12V, C
OUT
=4.7uF
(Ceramic, ESR=0.02
at 100kHz)
1000
100
10
1
0.1
1
10
0.1
0.01
100
I
O
Output current (mA)
ESR (
)
Stable Region
Instability Region
Instability Region
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