REJ03D0849-0201 Rev.2.01 Nov 14, 2007
Page 1 of 5
M6227xGP
5-Pin SOT-23 3 V System Fixed Output Voltage DC/DC Converter
REJ03D0849-0201
Rev.2.01
Nov 14, 2007
Description
M6227xGP is an integrated circuit designed as fixed output voltage general purpose DC/DC converter.
Integrating peripheral components in ultra small 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 500 µA ( typ.)
Especially this is most suitable for CD-ROM, and so on as converter from 5 to 3 V system.
Features
• Wide operation power supply voltage range…….. 4 V to 15 V (VCC = 5 V typ.)
• Low power consumption………………………… 500 µA max. (VCC = 5 V t yp., at no load)
• Built-in oscillator without peripheral components (110 kHz typ.)
• Built-in over current protection circuit
• Ultra small 5-pin SOT23 package
Applications
CD-ROM, portable equipments, general electric products
Block Diagram
Collecto
r
+
−+
+
−
OP
Amp
1.25 V
IN
45
1
2
GND
CLM
VCC
PWM Comp
3
Current limit
circuit
OSC.
(110 kHz)
M6227xGP
REJ03D0849-0201 Rev.2.01 Nov 14, 2007
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Pin Arrangement
M6227xGP
V
CC
IN
GND
Collector
output CLM
(Top view)
Outline: SOT-23, PLSP0005ZA-A (SOT-25)
1
2
3
5
4
Type Name & Output Voltage
Type Name Output Voltage
M62270GP 3.3 V
M62271GP 3.0 V
M62272GP 2.7 V
M62273GP 2.4 V
M62274GP 2.1 V
M62275GP 1.8 V
M62276GP 1.5 V
M6227xGP
REJ03D0849-0201 Rev.2.01 Nov 14, 2007
Page 3 of 5
Absolute Maximum Ratings
(Ta = 25°C, unless othe rwise noted)
Item Symbol Ratings Unit Conditions
Supply voltage VCC 16 V
Output current IO 100 mA
Power dissipation Pd 200 mW Ta = 25°C
Thermal derating ratio Kθ 2.0 mW/°C Ta > 25°C
Operating ambient temperature Topr −20 to +85 °C
Storage temperature Tstg −40 to +125 °C
Electrical Characteristics
(Ta = 25°C, VCC = 5 V, unless otherwise no ted)
Limits
Block
Item
Symbol Min Typ Max
Units
Conditions
Supply voltage VCC 4.0 15 V Supply current ICC 500 700 µA No load
3.15 3.30 3.45 V M62270GP
2.85 3.00 3.15 V M62271GP
2.57 2.70 2.83 V M62272GP
2.28 2.40 2.52 V M62273GP
2.00 2.10 2.20 V M62274GP
1.71 1.80 1.89 V M62275GP
Output voltage VO
1.42 1.50 1.58 V M62276GP
REF line regulation Vreg-L 5 30 mV VCC = 4 to 12 V
Error
Amp.
IN input current Iin 100 300 µA
Oscillator Oscillator frequency fOSC 65 110 160 kHz
CLM Current limit voltage VTHCLM 120 150 180 mV VCC − CLM
Maximum on duty TDUTY 90 %
Output leakage current ICL −1 1 µA VCC = 12 V, VC = 12 V
Output
Output saturation voltage Vsat 1.2 2.0 V IO = 100 mA
M6227xGP
REJ03D0849-0201 Rev.2.01 Nov 14, 2007
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Application Circuit (3.3 V Output DC/DC Converter; M62270GP)
100 µF
0.1 Ω
M62270
VIN (5 V)
VOUT (3.3 V, 1 A)
100 µF
IN
V
CC
CLM
GND
Collector
RCLM
1 kΩ
1 kΩ
47 µH
2
1
3
45
+
+
Figure 1 Example of Application Circuit of M62270GP
• Current limit detection:
When the voltage drop between 4-pin and 5-pin becomes 150 mV or more, current limit detection circuit starts to
operate. In the example of application (Figure 1), the current is limited to 1 . 5 A.
The Expression of Circuit Constants
Constants Expressions
(T
ON
+ T
OFF
) /
( )
T
ON
T
OFF
1 +
(V
IN
− V
CE (sat)
− V
O
)
× T
ON (MAX)
∆l
O
V
O
+ V
F
V
IN
− V
CE (sat)
− V
O
− T
OFF
1
f
OSC
(T
ON
+ T
OFF
)
MAX
T
OFF (MIN)
T
ON (MAX)
lpk
L
(MIN)
R
CLM
T
ON
T
OFF
l
O
+ ∆l
O
1
2
∆V
CLM
: 150 mV (V
CC
= 5 V)
0.15
Ipk
1
f
OSC
f
OSC
: 110 kHz (V
CC
= 5 V)
Note: 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".
M6227xGP
REJ03D0849-0201 Rev.2.01 Nov 14, 2007
Page 5 of 5
Package Dimensions
SOT-25
RENESAS CodeJEITA Package Code Package Name
MaxNomMin
Dimension in Millimeters
Symbol
Reference
0.1
1.3
0.6
MASS[Typ.]
A
E
D
A
b
c
θ
1
H
E
L
L
1
y
Z
A
2
0.2
0
3.1
0.95
0.6
0
°
15
°
PLSP0005ZA-ASC-74A
0.1
2.7 2.9
1.81.5 1.6
0.50.3 0.4
1.21.0 1.1
0.20.07 0.1
3.02.6 2.8
0.015 g
0.8
1.9 ± 0.2
D
θ
Z
b
y
E
L
1
L
H
E
A
2
A
A
1
c
e
e
Unit: mm
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