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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 A (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
VCC Over current detection resistor CLM 4 3 Current limit circuit OP Amp PWM Comp + + - 1 Collector
IN
5
- + 1.25 V
OSC (110 kHz) 2 GND OUT +
Rev.2.00 Jun 14, 2006 page 1 of 5
M62221L/FP
Pin Arrangement
M62221L 5 4 3 2 1 (Top view) Outline: 5P5T IN VCC GND CLM GND Collector CLM VCC 3 4 (Top view) 6 5 NC IN
NC : No connection
M62221FP Collector 1 2 8 7 NC NC
Outline: PRSP0008DA-A (8P2S-A)
Rev.2.00 Jun 14, 2006 page 2 of 5
M62221L/FP
Absolute Maximum Ratings
(Ta = 25C, unless otherwise noted)
Item Supply voltage Output current Power dissipation Thermal derating Operating ambient temperature Storage temperature Symbol VCC IO Pd K Topr Tstg Ratings 16 100 450 440 4.5 4.4 -20 to +85 -40 to +125 Unit V mA mW mW mW/C mW/C C C Conditions
Ta = 25C Ta > 25C
5-pin SIP 8-pin SOP 5-pin SIP 8-pin SOP
Electrical Characteristics
(Ta = 25C, VCC = 5 V, unless otherwise noted)
Limits Block All block Error Amp. Oscillator CLM Output Item Supply voltage Supply current Output voltage REF line regulation IN input current Oscillator frequency Maximum on duty Current limit voltage Output leakage current Output saturation voltage Symbol VCC ICC VO Vreg-L Iin fOSC TDUTY VTHCLM ICL Vsat Min 4.0 2.85 65 120 -1 Typ 660 3.00 5 100 110 90 150 0.4 Max 15 900 3.15 15 300 155 180 1 0.7 Unit V A V mV A kHz % mV A V VCC - CLM VCC = 12 V, VC = 12 V IO = 100 mA Without load VCC = 4 to 12 V Test Conditions
Rev.2.00 Jun 14, 2006 page 3 of 5
M62221L/FP
Application Circuit (3.0 V Output DC/DC Converter)
VIN (5 V) + RCLM 0.1 100 F
4 VCC
3 CLM 1 k
VOUT (3.0 V, 1 A) 5 IN 100 F + GND 2 M62221 Collector 1
1 k
68 H
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 + 1 - TOFF fOSC (VIN - VCE (sat) - VO) x TON (MAX) lO lO + 1 lO 2 TON TOFF )
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
EIAJ Package Code SIP5-P-240-2.54 JEDEC Code - Weight(g) 0.22 Lead Material Cu Alloy
Plastic 5pin 240mil SIP
D
E
A2 A1 L A
Symbol
1
b e b1
5
E1 b2 c
SEATING PLANE
A A1 A2 b b1 b2 c D E E1 e L
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
JEITA Package Code P-SOP8-4.4x5-1.27
RENESAS Code PRSP0008DA-A
Previous Code 8P2S-A
MASS[Typ.] 0.07g
8
5
HE
*1
E
F
1
Index mark
4
NOTE) 1. DIMENSIONS "*1" AND "*2" DO NOT INCLUDE MOLD FLASH. 2. DIMENSION "*3" DOES NOT INCLUDE TRIM OFFSET.
c
A2 A1
*2
D
Reference Symbol
Dimension in Millimeters
*3 e y
bp
D E A2 A1 A bp c HE e y L
Detail F
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
A
Rev.2.00 Jun 14, 2006 page 5 of 5
L
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