Mitsubishi M62273GP 5-pin sot-23 3v system fixed output voltage dc-dc converter Datasheet

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
1
GND
2
IN
3
5
CLM
4
Vcc
FEATURES
Outline 5P2X-A
(SOT-23)
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
<TYPE NAME & OUTPUT VOLTAGE>
APPLICATIONS
CD-ROM, portable equipments, general electric products
TYPE NAME
OUTPUT VOLTAGE
M62270GP
M62271GP
M62272GP
M62273GP
M62274GP
M62275GP
M62276GP
3.3V
3.0V
2.7V
2.4V
2.1V
1.8V
1.5V
BLOCK DIAGRAM
VCC
CLM
4
3
CURRENT LIMIT
CIRCUIT
OP Amp
PWM Comp
IN
1 Collector
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
Parameter
Conditions
Ratings
Unit
Vcc
Supply Voltage
16
V
Io
Output Current
100
mA
Pd
Power Dissipation
Ta=25C
200
mW
Ta>25C
2.0
mW/C
KTHETA Thermal Derating Ratio
Topr
Operating Ambient Temperature
-20 to +85
C
Tstg
Storage Temperature
-40 to +125
C
ELECTRICAL CHARACTERISTICS (Ta=25C, Vcc=5V, unless otherwise noted)
Block
Symbol
Vcc
Icc
Parameter
Conditions
Max
4.0
-
500
15
700
M62271GP
3.15
2.85
3.30
3.00
3.45
3.15
M62272GP
2.57
2.70
2.83
M62273GP
M62274GP
2.28
2.40
2.52
V
V
2.00
2.10
2.20
V
M62275GP
1.71
1.80
1.89
V
M62276GP
1.42
1.50
1.58
5
30
V
mV
-
100
300
µA
65
110
160
120
150
180
KHz
mV
Vcc = 12V, Vc = 12V
-1
90
-
1
µA
Io = 100mA
-
1.2
2.0
V
Supply Voltage
No load
Supply Current
Error
Amp.
Vreg-L
Iin
Output Voltage
REF Line Regulation
Output
TDUTY Maximum ON Duty
Output Leakage Current
ICL
Vsat
Vcc= 4 to 12V
IN Input Current
Oscillator
fosc Oscillator Frequency
CLM
VTHCLM Current Limit Voltage
Output Saturation Voltage
Min
Units
Typ
M62270GP
Vo
Limits
Vcc - CLM
( 2 /3)
V
µA
V
V
%
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)
RCLM
0.1ohm
VIN (5V)
+
100µF
5
CLM
4
Vcc
1Kohm
VOUT(3.3V,1A)
3 IN
M62270 Collector 1
+
100µF
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
TON
TOFF
(TON+TOFF)MAX
TOFF(MIN)
TON(MAX)
L(MIN)
Ipk
RCLM
•
•
•
•
EXPRESSIONS
VO+VF
VIN - VCE(sat) - VO
1
fosc
fosc:110KHz(Vcc=5V)
( TON + TOFF ) / ( 1 + TON )
TOFF
1
fosc - TOFF
( VIN - VCE(sat) - VO ) TON(MAX)
∆Io
∆Io
Io + 1
2
0.15 ∆VCLM: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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