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.
2.
3.
4.
5.
6.
7.
No-load input current
I/O voltage difference
Ripple rejection ratio
Output current
Output noise voltage
Output voltage rank
Output on/off control
95µA typ.
0.1V typ.(Io=50mA)
70dB typ.
150mA max.
35µVrms typ.
2~3.3V(0.1V step), 3.5V/3.8V/4V/4.2V/4.5V/4.8V/5V/5.2V
High ON, Low OFF
Pin Assignment
Ph
as
1.
2.
3.
4.
Cordless phones
Portable phones, PHS
Portable minidiscs
Portable equipment which uses batteries
ed
4
1
2
3
C
ONT
GND
NOISE
V
OUT
V
IN
3
4
5
5
1
2
SOT-25A
(TOP VIEW)
O
Applications
ut
SOT-25A (MM1385 N)
The output voltage rank appears in the boxes.
*
Pr
Package
od
uc
ts
MITSUMI
Microminiature Low-Power Consumption Low-Saturation Regulator MM1385
Block Diagram
Absolute Maximum Ratings
Item
Storage temperature
Operating temperature
Power supply current
Output current
Power consumption
Symbol
T
STG
T
OPR
V
CC
Pd
I
OUT
od
200
150
0~150
1.8~12
uc
Ratings
-20~+75
Units
°C
°C
V
mA
mW
-40~+125
-0.3~+12
Ph
as
Recomnended Operating Conditions
Item
Symbol
Top
Iop
Vop
Ratings
-20~+75
Units
°C
mA
V
Operating temperature
Output current
Operating voltage
ed
O
ut
Pr
ts
MITSUMI
Microminiature Low-Power Consumption Low-Saturation Regulator MM1385
Electrical Characteristics
Item
Output voltage
No-load consumption current
Input current while off
I/O voltage difference
Input fluctuations
Load fluctuation
Output voltage temperature coefficient
Ripple rejection rate
Output noise voltage
C
ONT
pin current while on
C
ONT
pin high level
C
ONT
pin low level
(Except where noted otherwise,Ta=25°C)
Symbol
Vo
Iccq1
Iccq2
Vd min.
V1
V2
Vo/ T
RR
Vn
I
ON
H
L
Measurement conditions
V
IN
=Vo+1V, Io=30mA,
V
IN
=Vo+1V, Io=0mA
V
IN
=Vo+1V, V
CONT
=0V
V
IN
=Vo-0.2V, Io=50mA
V
IN
=Vo+1V~10V, Io=50mA
V
IN
=Vo+1V, Io=0~100mA
Tj=-20~+75°C, V
IN
=Vo+1V, Io=30mA
V
IN
=Vo+1V, Io=30mA, V
RIPPLE
=1V
P-P
, f=120Hz
V
IN
=Vo+1V, f=20~80kHz, Io=30mA, Cn=0.01µF
V
CONT
=1.6V
1.6
50
0.1
10
30
100
70
35
(3V item)
Min. Typ. Max. Units
V
OUT
-2%
V
OUT
95
V
OUT
+2%
V
µA
µA
V
mV
mV
ppm/°C
dB
µVrms
190
0.1
0.2
20
60
5
10
V
IN
+0.3V
µA
V
V
ts
ut
Voltage
5.2V
5.0V
4.9V
4.8V
4.6V
4.5V
4.2V
4.0V
3.8V
3.6V
3.5V
3.3V
3.2V
-0.3
0.4
Output Voltage Rank
Ph
as
Rank
W
A
Q
Z
X
B
V
C
Y
I
D
E
F
Rank
G
H
J
K
L
M
N
P
R
S
T
U
Voltage
3.1V
3.0V
2.9V
2.8V
2.7V
2.6V
2.5V
2.4V
2.3V
2.2V
2.1V
2.0V
ed
O
Pr
od
Measuring Circuit
uc
MITSUMI
Microminiature Low-Power Consumption Low-Saturation Regulator MM1385
Characteristics
(Represent data. H rank)
No-load input current
Consuption current
(mA)
2
1.5
1
0.5
0
0
2
4
6
8
10
Ripple rejection rate
(V
IN
=4V, I
O
=30mA, Vripple=1V, C
OUT
=4.7µF)
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
Ripple rejection rate
(Hz)
10
100
1k
10k
100k
1M
Input voltage (V)
Frequency (Hz)
Consuption current (V
IN
=4V)
9
8
7
6
5
4
3
2
1
0
Output noise voltage
(V
IN
=4V, I
O
=30mA, C
OUT
=4.7µF)
Output noise
voltage (µVrms)
100
60
40
20
Consuption current
(mA)
od
0
0.001
uc
0.01
0.1
0
20
40
60
80 100 120 140 160
I/O voltage difference (V
IN
=2.8V)
0.3
0.25
0.2
0.15
0.1
0.05
0
I/O voltage difference
(V)
Input fiuctuation
(mV)
ut
O
ed
0 20 40 60 80 100 120 140 160 180 200
Pr
20
10
0
-10
-20
4
300
20
10
0
-10
-20
-30
-40
-50
-60
Output current (mA)
Noise pin capacitance (µF)
Input fluctuation (I
O
=30mA)
5
Current limit (V
IN
=4V)
3.5
3
2.5
2
1.5
1
0.5
0
as
Output current (mA)
Load fluctuation rate (V
IN
=4V)
Load fiuctuation rate
(mV)
Output voltage (V)
0
Ph
50
100
150
200
250
0 20 40 60 80 100120140160180200
Output current (mA)
ESR Stable region
1000
V
IN
=0~12V, C
OUT
=4.7uF
(Ceramic, ESR=0.02Ω at 100kHz)
Instability Region
ESR (Ω)
100
10
1
0.1
0.01
Instability Region
0.1
1
10
100
Stable Region
I
O
Output current (mA)
ts
6
7
8
9 10 11 12 13 14
80
Input voltage (V)
Output current (mA)
PCB设计
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
