MITSUMI
Driver IC for Vibrators MM1426
Driver IC for Vibrators
Monolithic IC MM1426
Outline
This IC was developed as a driver for vibrator motors, and has an output voltage set at 1.3V.
The input voltage is monitored, and if a constant voltage is not input the output is turned off.
Features
1. Compact package for small mounting area.
2. In addition to output control through the input voltage, the IC can be turned on and off through the CONT pin.
3. Good ripple rejection.
4. Output currents of up to 150mA.
5. Operating voltage of up to 12V.
6. Output voltage is available in 0.1V steps from 1.2V to 2.0V.
Package
SOT-25A
Applications
Pin Assignment
Cellular phones, PHS, game, pagers.
1
2
3
5
4
SOT-25
MITSUMI
1
CONT
2
GND
3
N.C
4
V
OUT
5
V
IN
MITSUMI
Driver IC for Vibrators MM1426
Output voltage is not output when input voltage
is less than input voltage detection value.
Note that consumption current flows even
when output voltage is OFF due to input
voltage detection. Turn output OFF with the
CONT pin in order to suppress consumption
current completely.
Pin Description
MITSUMI
Pin No. Pin name
Functions
Equivalent circuit diagram
1
CONT
Output voltage on/off-control pin
Connect cont-terminal with V
IN
,
when it is not used.
2
GND
GND pin
3
N.C
4
V
OUT
Regulator Output pin
5
V
IN
Voltage-supply input pin
V
CONT
Output
L
OFF
H
ON
Equivalent Circuit Diagram
MITSUMI
Driver IC for Vibrators MM1426
MITSUMI
Electrical Characteristics
(Except where noted otherwise, Ta=25C)
Item
Symbol
Measurement conditions
Min. Typ. Max. Unit
Output voltage
Vo
V
IN
=3.5V Io=30mA
-3%
V
O
+3%
V
No-Load input current
Iccq1
V
IN
=3.5V Io=0mA
120
240
A
Input current 1 (OFF)
Iccq2
V
IN
=1.8V V
CONT
=1.6V
80
160
A
Input current 2 (OFF)
Iccq3
V
IN
=3.5V V
CONT
=0V
0.1
A
Line regulation
V1
V
IN
=3V~5V Io=30mA
10
20
mV
Load regulation
V2
V
IN
=3.5V Io=0~100mA
30
60
mV
Vo temperature coefficient
Vo/ T
Tj=-20~+75C V
IN
=3.5V
100
ppm/C
Io=30mA
Ripple rejection
RR
V
IN
=3.5V f=120Hz
55
70
dB
V
RIPPLE
=1V
P-P
, Io=30mA
V
IN
low detector voltage
V
S
L
V
IN
=H L Io=30mA
2.0
2.1
2.2
V
V
IN
low detector voltage
V
S
L/ T
Tj=-20~+75C V
IN
=H L Io=30mA
200
ppm/C
temperature coefficient
V
IN
high detector voltage
V
S
H
V
IN
=L H Io=30mA
2.6
2.8
V
High threshold voltage
Vonh
V
IN
=H L, L H
500
mV
Cont terminal current
I
ON
V
CONT
=1.6V
5
10
A
High threshold voltage
H
1.6
V
IN
+0.3
V
Low threshold voltage
L
-0.3
0.4
V
Absolute Maximum Ratings
Item
Symbol
Ratings
Unit
Operating temperature
T
OPR
-20~+75
C
Storage temperature
T
STG
-40~+125
C
Supply voltage
V
CC
-0.3~+12
V
Output current
I
OUT
200
mA
Power dissipation
Pd
150 (Alone)
mW
Recommended Operating Conditions
Item
Symbol
Ratings
Unit
Operating temperature
T
OPR
-20~75
C
Output current
I
OP
0~150
mA
Operating voltage
V
OP
1.8~12
V
MITSUMI
Driver IC for Vibrators MM1426
MITSUMI
Application Circuits
Timing Chart
2.6V
2.1V
0V
1.3V
0V
H
L
V
IN
CONT
V
OUT
NOTE 1 : This regulator is not internally compensated and thus requires an external output-capacitor (C
OUT
) for
stability.
Measuring Circuit
MITSUMI
Driver IC for Vibrators MM1426
MITSUMI
Characteristics
Output current (mA)
60
40
20
-20
-40
-60
0
0
20
40
60
80
100 120 140
Load regulation (mV)
V
IN
(V)
10
5
-5
-10
0
4
6
8
10
12
Line regulation (mV)
Output current (mA)
1.5
1.25
0.75
0.5
0.25
0
1
0
100
200
300
Output voltage (V)
Temperature (
C)
800
700
500
400
300
200
100
0
600
0
25
50
75
100
125
Alone
On Board
57x31x0.8mm
Allowable loss (mW)
Temperature (
C)
2
1.75
1.25
1
0.75
0.5
0.25
0
1.5
25
75
125
175
Output voltage (V)
Load regulation
Line regulation
Current limit
Thermal shutdown
Allowable loss
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