Mitsubishi M62294FP Datasheet

MITSUBISHI(Standard Linear ICs)

3.3V, 2.0V FIXED 2-OUTPUT VOLTAGE DC-DC CONVERTER

DESCRIPTION

PIN CONFIGURATION

(

TOP VIEW)

Outline 8P2S-A

M62293FP is 3.3V and 2.5V fixed stable 2-output step-down DC-DC
converter.
It is possible to simplify peripheral circuit and to design compact and low
cost sets because this device includes peripheral devices in small size
8pin package.
The IC also has Reset circuit with time delay that monitors power
supply(Vcc=5V) and one regulator output(Vout1=3.3V;IN1 terminal),
therefore an application system is protected system errors.
Especially this is most suitable for application sysytem with
microprocessor and ASIC.

FEATURES

•3.3V and 2.0V step-down converter

•4 to 15V wide input supply voltage (Vcc=5V typ.)

•Reset circuit with time delay monitors
supply voltage(Vcc=5V)and regulator output (3.3V)

•110kHz fixed frequency oscillator without peripheral devices

•8pin SOP package

M62294FP

Cout1

GND
Cout2

Vcc

1
2
3
4

8
7

6
5

IN1
RESET
Cd

IN2

APPLICATION

application system with microprocessor and ASIC

BLOCK DIAGRAM

Vref

1.25V

comparator

(3.3V detect) (Vcc detect)

oscillator

(110kHz)

Cout1

Vcc Cd

IN1;3.3V

25µA

RESET

0.6µA

comparator

Vcc

Cout2

PWM comp.

op amp op amp

4

( 1 / )

IN2(2.0V)

IN1(3.3V)

PWM comp.

GND

000131













MITSUBISHI(Standard Linear ICs)

M62294FP

3.3V, 2.0V FIXED 2-OUTPUT VOLTAGE DC-DC CONVERTER



ABSOLUTE MAXIMUM RATINGS(Ta=25C,unless otherwise noted)

Symbol Parameter Conditions Ratings Unit

Vcc

Io

Pd Power dissipation

Kθ
Topr
Tstg

Supply voltage
Output current(DC-DC converter block)
Output current(Reset block)IoRESET mA

Thermal derating
Operating temperature
Storage temperature

ch1,ch2

Ta=25ºC

Ta>25ºC

ELECTRICAL CHARACTERISTICS(Ta=25C,Vcc=5V,unless otherwise noted)

16 V
30

6

440 mW

4.4

-20~+85

-40~+125

mA

mW/ºC

ºC
ºC

Block Parameter Test condition

All
Blocks

DC-DC Converter Block

Error Amp.

Oscillator

Output

Reset circuit Block

Reset
Circuit

Symbol

Vcc

Icc

Vo1
Vo2

Vreg-L

Iin

fosc

TDUTY

Vsat

Vs1

∆ Vs1

Vs2

∆ Vs2

Supply voltage
Supply current

Output voltage V
Line regulation

Input current 1
Input current 2
Oscillator frequency
Maximum ON duty
Output leakage current Vcc=12V, Vc=12VICL
Output saturation voltage Io=10mA,Darlington connection

Detecting voltage 1
hysterisys voltage 1
Detecting voltage 2
Hysterisys voltage 2
Cd output currentIPD
Delay time Cd=4700pFtpd msec
RESET output current
RESET LOW voltageVOL
RESET High voltageVOH

Without load

ch1 output
ch2 output
Vcc=4~12V

ch1
ch2

Vcc=5V detection

ch1output(3.3V)detection

Vcc=5V, Vo=1/2 X VccIOC µA-25-40 -17
IoRESET=4mA

Limits

Min. Typ. Max.

4.0 V

3.15 3.30 3.45

1.90 2.00 2.10

150 450

65 KHz

110

-1

3.6 4.0

2.46 2.70

-1.1

0.8Vo1

2.58

-0.6

5 20

15

5.0

1.5

2.8

5 15

160

90



1.2 2.0 V

3.8
5030 80

5030 80

10

1

-0.3

0.2Vo1

Unit

mA

mV
µA
µAIin 100 300

%

V

V

mV

V
mV
µA

V
V

( 2 / )

4

000131