Renesas M62221FP 3.0 v fixed output voltage dc/dc converter Datasheet

M62221L/FP
3.0 V Fixed Output Voltage DC/DC Converter
REJ03D0847-0200
Rev.2.00
Jun 14, 2006
General Description
The M62221 is a general purpose DC/DC converter which provides a 3.0 V fixed output voltage.
It is possible to simplify the peripheral circuit and to design compact and low cost sets because this IC, housed in a
small 5 or 8-pin package includes necessary peripheral components.
Especially this is most suitable for CD-ROM, Disk Drive sets and PDA as a converter from 5 V to 3.0 V.
Features
•
•
•
•
•
Wide operation supply voltage range…... 4 to 15 V
Low power consumption……………….. 900 µA (max.)
Built-in oscillator without external components (110 kHz typ.)
Built-in over current protection circuit
Small size 5-pin SIP and 8-pin SOP packages
Applications
CD-ROM, PDA, general purpose electric products
Block Diagram
Over current
detection resistor
VCC
CLM
4
3
Current limit
circuit
IN
5
−
OP
Amp
+
1.25 V
PWM Comp
1
Collector
+
+
−
OSC
(110 kHz)
2
GND
OUT
+
Rev.2.00 Jun 14, 2006 page 1 of 5
M62221L/FP
Pin Arrangement
M62221L
M62221FP
5
IN
4
VCC
3
CLM
2
GND
1
Collector
Collector
1
8
NC
GND
2
7
NC
CLM
3
6
NC
VCC
4
5
IN
NC : No connection
(Top view)
(Top view)
Outline: 5P5T
Outline: PRSP0008DA-A (8P2S-A)
Rev.2.00 Jun 14, 2006 page 2 of 5
M62221L/FP
Absolute Maximum Ratings
(Ta = 25°C, unless otherwise noted)
Item
Supply voltage
Symbol
VCC
Ratings
16
Unit
V
Output current
Power dissipation
Conditions
IO
Pd
100
450
mA
mW
Ta = 25°C
5-pin SIP
Thermal derating
Kθ
440
4.5
mW
mW/°C
Ta > 25°C
8-pin SOP
5-pin SIP
Operating ambient temperature
Topr
4.4
−20 to +85
mW/°C
°C
Storage temperature
Tstg
−40 to +125
°C
8-pin SOP
Electrical Characteristics
(Ta = 25°C, VCC = 5 V, unless otherwise noted)
Limits
Block
Item
Symbol
Min
Typ
Max
Unit
Test Conditions
Supply voltage
VCC
4.0

15
V
Supply current
Output voltage
ICC
VO

2.85
660
3.00
900
3.15
µA
V
Without load
REF line regulation
IN input current
Vreg-L
Iin


5
100
15
300
mV
µA
VCC = 4 to 12 V
Oscillator
Oscillator frequency
Maximum on duty
fOSC
TDUTY
65

110
90
155

kHz
%
CLM
Output
Current limit voltage
Output leakage current
VTHCLM
ICL
120
−1
150

180
1
mV
µA
Output saturation voltage
Vsat

0.4
0.7
V
All block
Error
Amp.
Rev.2.00 Jun 14, 2006 page 3 of 5
VCC − CLM
VCC = 12 V, VC = 12 V
IO = 100 mA
M62221L/FP
Application Circuit (3.0 V Output DC/DC Converter)
RCLM
0.1 Ω
VIN (5 V)
+
100 µF
4
3
VCC
CLM
1 kΩ
VOUT (3.0 V, 1 A)
5 IN
100 µF
M62221
Collector 1
1 kΩ
+
GND
2
68 µH
Figure 1 Example of the M62221L/FP Application Circuit
• Current limit detection:
When the voltage drop between pin 3 and pin 4 becomes more than 150 mV, the current limit detection circuit
begins operating. The peak switch current "Ipk" is limited to 150 mV/RCLM. In the example of application
(Figure 1), the current is limited to 1.5 A.
The Expression of Circuit Constants
Constants
TON
TOFF
(TON + TOFF) MAX
TOFF (MIN)
TON (MAX)
L (MIN)
lpk
RCLM
Expressions
VO + VF
VIN − VCE (sat) − VO
1
fOSC: 110 kHz (VCC = 5 V)
fOSC
(TON + TOFF) / ( 1 +
TON
TOFF
)
1
− TOFF
fOSC
(VIN − VCE (sat) − VO) × TON (MAX)
∆lO
lO +
1
∆lO
2
0.15
∆VCLM: 150 mV (VCC = 5 V)
Ipk
Note: VF: Forward voltage drop of an external diode.
Vsat: Output saturation voltage of an external switching transistor.
∆IO: It should be set between 1/3 and 1/5 of maximum output current.
An external transistor, diode and inductor should have a peak current capability of greater than "Ipk".
Rev.2.00 Jun 14, 2006 page 4 of 5
M62221L/FP
Package Dimensions
5P5T
Plastic 5pin 240mil SIP
EIAJ Package Code
SIP5-P-240-2.54
Weight(g)
0.22
JEDEC Code
–
Lead Material
Cu Alloy
D
L
A1
A
A2
E
Symbol
1
b
e
5
E1
b2
A
A1
A2
b
b1
b2
c
D
E
E1
e
L
c
b1
SEATING PLANE
JEITA Package Code
P-SOP8-4.4x5-1.27
RENESAS Code
PRSP0008DA-A
MASS[Typ.]
0.07g
E
5
*1
HE
8
Previous Code
8P2S-A
Dimension in Millimeters
Min
Nom
Max
6.1
–
–
–
–
1.4
–
–
4.0
0.4
0.5
0.6
1.1
1.2
1.5
0.75
0.85
1.15
0.22
0.27
0.34
11.7
11.9
11.5
1.77
1.97
2.17
0.6
0.7
0.8
–
–
2.54
–
–
3.0
F
1
NOTE)
1. DIMENSIONS "*1" AND "*2"
DO NOT INCLUDE MOLD FLASH.
2. DIMENSION "*3" DOES NOT
INCLUDE TRIM OFFSET.
4
Index mark
c
A2
*2
A1
D
L
A
Reference
Symbol
*3
e
bp
y
D
E
A2
A1
A
bp
c
Detail F
HE
e
y
L
Rev.2.00 Jun 14, 2006 page 5 of 5
Dimension in Millimeters
Min Nom Max
4.8 5.0 5.2
4.2 4.4 4.6
1.5
0.05
1.9
0.35 0.4 0.5
0.13 0.15 0.2
0°
10°
5.9 6.2 6.5
1.12 1.27 1.42
0.1
0.2 0.4 0.6
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