MITSUBISHI <Standard Linear IC>
M6227XGP
5-PIN SOT-23 3V SYSTEM FIXED OUTPUT VOLTAGE DC-DC CONVERTER
DESCRIPTION
M6227XGP is an integrated circuit designed as fixed output voltage
general purpose DC-DC converter.
Integrating peripheral components in ultrasmall 5-pin SOT23 package
allows for simplified external circuit and compact low cost design.
This IC is applicable to portable equipments due to low circuit current
500uA(typ.)
Especially this is most suitable for CD-ROM, and so on as converter
from 5 to 3V system.
PIN CONFIGURATION (TOP VIEW)
COLLECTOR
OUTPUT
GND
1
2
3
5
CLM
IN
4
Vcc
FEATURES
Wide operation power supply voltage range -- 4V to 15V(Vcc=5V typ.)
Low power consumption -- 500µA max.(Vcc=5V typ., at no load)
Built-in oscillator without peripheral components (110KHz typ.)
Built-in overcurrent protection circuit
Ultrasmall 5-pin SOT23 package
Outline 5P2X-A
(SOT-23)
<TYPE NAME & OUTPUT VOLTAGE>
TYPE NAME
OUTPUT VOLTAGE
APPLICATIONS
CD-ROM, portable equipments, general electric products
M62270GP
M62271GP
M62272GP
M62273GP
M62274GP
M62275GP
M62276GP
3.3V
3.0V
2.7V
2.4V
2.1V
1.8V
1.5V
BLOCK DIAGRAM
V
CC
CLM
4
OP Amp
3
CURRENT LIMIT
CIRCUIT
PWM Comp
1
Collector
IN
5
1.25V
OSC.
(110KHz)
2
GND
( 1 /3)
Jan. 2000
MITSUBISHI <Standard Linear IC>
M6227XGP
5-PIN SOT-23 3V SYSTEM FIXED OUTPUT VOLTAGE DC-DC CONVERTER
ABSOLUTE MAXIMUM RATINGS (Ta=25C, unless otherwise noted)
Symbol
Vcc
Io
Pd
Parameter
Supply Voltage
Output Current
Power Dissipation
Ta=25C
Ta>25C
Conditions
Ratings
16
100
200
2.0
-20 to +85
-40 to +125
Unit
V
mA
mW
mW/C
C
C
K
THETA
Thermal Derating Ratio
Topr
Tstg
Operating Ambient Temperature
Storage Temperature
ELECTRICAL CHARACTERISTICS (Ta=25C, Vcc=5V, unless otherwise noted)
Block
Symbol
Vcc
Icc
Parameter
Supply Voltage
Supply Current
No load
M62270GP
M62271GP
M62272GP
Error
Amp.
Vo
Output Voltage
M62273GP
M62274GP
M62275GP
M62276GP
Vreg-L
Iin
REF Line Regulation
IN Input Current
Vcc - CLM
Vcc = 12V, Vc = 12V
Io = 100mA
Vcc= 4 to 12V
-
65
120
-1
-
Conditions
Limits
Min
4.0
-
3.15
2.85
2.57
2.28
2.00
1.71
1.42
Typ
500
3.30
3.00
2.70
2.40
2.10
1.80
1.50
5
100
110
150
90
-
1.2
Max
15
700
3.45
3.15
2.83
2.52
2.20
1.89
1.58
30
300
160
180
1
2.0
Units
V
µA
V
V
V
V
V
V
V
mV
µA
KHz
mV
%
µA
V
Oscillator
fosc Oscillator Frequency
CLM
V
THCLM
Current Limit Voltage
Output
T
DUTY
Maximum ON Duty
Output Leakage Current
I
CL
Vsat
Output Saturation Voltage
( 2 /3)
Jan. 2000
MITSUBISHI <Standard Linear IC>
M6227XGP
5-PIN SOT-23 3V SYSTEM FIXED OUTPUT VOLTAGE DC-DC CONVERTER
1. Application Circuit (3.3V Output DC-DC Converter; M62270GP)
V
IN
(5V)
+
R
CLM
0.1ohm
100µF
4
Vcc
V
OUT
(3.3V,1A)
3 IN
100µF
+
5
CLM
1Kohm
M62270 Collector 1
1Kohm
GND
2
47µH
Fig.1 Example of application circuit of M62270GP
Current Limit Detction:
When the voltage drop between 4pin and 5pin becomes 150mV or more,
Current Limit Detection circuit starts to operate. In the example of application
(fig.1), the current is limited to 1.5A.
2. THE EXPRESSION OF CIRCUIT CONSTANTS
CONSTANTS
T
ON
T
OFF
(T
ON
+T
OFF
)
MAX
T
OFF(MIN)
T
ON(MAX)
L
(MIN)
Ipk
R
CLM
•
•
•
•
EXPRESSIONS
V
O
+V
F
V
IN
- V
CE(sat)
- V
O
1
fosc
fosc:110KHz(Vcc=5V)
( T
ON
+ T
OFF
) / ( 1 + T
ON
)
T
OFF
1
fosc - T
OFF
( V
IN
- V
CE(sat)
- V
O
) T
ON(MAX)
∆
I
o
Io + 1
∆
Io
2
0.15
∆
V
CLM
:150mV(Vcc=5V)
Ipk
VF : Forward voltage drop of an external diode.
Vsat : Output saturation voltage of an external switching transistor.
∆
Io :Set to 1/3 to 1/5 of maximum output current
Choose an external transistor, diode and inductor with peak current rating
greater than "Ipk".
( 3 /3 )
Jan. 2000
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