M62292FP [MITSUBISHI]
3.3V, 1.8V FIXED 2-OUTPUT VOLTAGE DC-DC CONVERTER; 3.3V ， 1.8V固定2 ，输出电压DC -DC转换器
| 型号： | M62292FP |
| 厂家： | 
Mitsubishi Group |
| 描述： | 3.3V, 1.8V FIXED 2-OUTPUT VOLTAGE DC-DC CONVERTER |
| 文件： | 总4页 (文件大小：34K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MITSUBISHI(Standard Linear ICs)
M62292FP
3.3V, 1.8V FIXED 2-OUTPUT VOLTAGE DC-DC CONVERTER
DESCRIPTION
M62293FP is 3.3V and 1.8V fixed stable 2-output step-down DC-DC
converter.
PIN CONFIGURATION(TOP VIEW)
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.
Cout1
GND
Cout2
Vcc
IN1
1
2
3
4
8
7
6
5
RESET
Cd
IN2
FEATURES
● 3.3V and 1.8V step-down converter
Outline 8P2S-A
● 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
APPLICATION
application system with microprocessor and ASIC
BLOCK DIAGRAM
Vcc
Cd
IN1;3.3V
25µA
RESET
Vref
1.25V
0.6µA
Vcc
comparator
(3.3V detect)
comparator
(Vcc detect)
oscillator
(110kHz)
Cout2
Cout1
PWM comp.
PWM comp.
op amp
op amp
GND
IN2(1.8V)
IN1(3.3V)
( 1 / )
4
000131
MITSUBISHI(Standard Linear ICs)
M62292FP
3.3V, 1.8V FIXED 2-OUTPUT VOLTAGE DC-DC CONVERTER
ABSOLUTE MAXIMUM RATINGS(Ta=25C,unless otherwise noted)
Symbol
Vcc
Parameter
Conditions
Ratings
16
Unit
V
Supply voltage
Output current(DC-DC converter block)
Io
ch1,ch2
mA
mA
mW
30
6
IoRESET Output current(Reset block)
440
Pd
Power dissipation
Ta=25˚C
Ta >25˚C
Thermal derating
4.4
mW/˚C
Kq
Topr
Operating temperature
Storage temperature
-20 ~+85
-40 ~+125
˚C
˚C
Tstg
ELECTRICAL CHARACTERISTICS(Ta=25C,Vcc=5V,unless otherwise noted)
Limits
Block
Symbol
Parameter
Test condition
Unit
Min.
4.0
Typ. Max.
5.0
1.5
15
V
All
Blocks
Vcc
Icc
Supply voltage
Supply current
Without load
-
2.8
mA
DC-DC Converter Block
Vo1
ch1 output
ch2 output
Vcc=4~12V
ch1
3.15
3.30 3.45
1.80 1.89
Output voltage
V
Vo2
1.71
Error Amp.
Vreg-L Line regulation
-
-
5
15
450
300
160
-
mV
µA
Iin
Iin
Input current 1
150
100
110
90
-
Input current 2
ch2
µA
fosc
65
-
KHz
Oscillator
Output
Oscillator frequency
%
V
TDUTY Maximum ON duty
ICL
Output leakage current
Output saturation voltage
Vcc=12V, Vc=12V
1
-1
-
-
Io=10mA,Darlington connection
1.2
2.0
Vsat
V
Reset circuit Block
Vs1
Detecting voltage 1
hysterisys voltage 1
Detecting voltage 2
Hysterisys voltage 2
Cd output current
Delay time
Vcc=5V detection
V
mV
V
3.6
30
3.8
50
4.0
80
DVs1
Vs2
ch1output(3.3V)detection
2.46
30
2.58 2.70
50 80
-0.6 -0.3
mV
µA
DVs2
Reset
Circuit
IPD
-1.1
5
tpd
IOC
VOL
VOH
Cd=4700pF
10
20
msec
RESET output current
RESET LOW voltage
RESET High voltage
Vcc=5V, Vo=1/2 X Vcc
-40
-
-25
-17
µA
V
IoRESET=4mA
0.2Vo1
-
V
0.8Vo1
4
( 2 / )
000131
MITSUBISHI(Standard Linear ICs)
M62292FP
3.3V, 1.8V FIXED 2-OUTPUT VOLTAGE DC-DC CONVERTER
RESET BLOCK timing chart
5V
3.85V
3.80V
0V
t
t
t
3.3V
2.63V
2.58V
0V
Vo1
td
td
td
0V
td : RESET Delay Time •••
td(msec) = 2.13 ´ 10-3´ Cd(pF)
( 3 /4 )
000131
MITSUBISHI(Standard Linear ICs)
M62292FP
3.3V, 1.8V FIXED 2-OUTPUT VOLTAGE DC-DC CONVERTER
APPLICATION CIRCUIT (3.3V and 1.8V 2-output voltage DC-DC converter
VIN(5V)
+
Cin
Vcc
R2
R1
VOUT1(3.3V)
Co1
Q1
D1
IN1
IN2
Cout1
Cout2
+
+
L1
M62292FP
R4
R3
Q2
VOUT2(1.8V)
Co2
D2
RESET Cd
GND
L2
3.3V LINE
1.8V LINE
MCU etc.
THE EXPRESSION OF CIRCUIT CONSTANTS
Constants
Expressions
VO+VF
TON
VIN - VCE(sat) - VO
TOFF
1
fosc
(TON+TOFF)MAX
TOFF(MIN)
TON(MAX)
L(MIN)
fosc:110KHz(Vcc=5V)
TON
)
1 +
( TON + TOFF ) /
(
TOFF
1
- TOFF
fosc
( VIN - VCE(sat) - VO ) ´ TON(MAX)
DIo
1
2
DIo
Io +
Ipk
note:
• VF
• Vsat : Output saturation voltage of an external switching transistor.
• DIO : Set to 1/3 to 1/5 of maximum output current.
: Forward voltage drop of an external diode
• Choose an external transistor, diode and inductor with peak current rating
approximately greater than "Ipk".
( 4 /4 )
000131
相关型号：
©2020 ICPDF网 联系我们和版权申明