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PRODUCTS PRODUCTS INDEX
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 POWER SUPPLY ICs
ICS
2ch Synchronous Step-down DC/DC Converter + 1ch LDO + 2ch P-GOOD
Monolithic IC MM3558 Series
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[Outline]
This IC is a compound power supply IC which built in Synchronous Step-down DC/DC converter 2ch, LDO1ch, and P-GOOD2ch.
The ripple of the input current is decreased so that the DC/DC converter of 2ch may work by the opposite phase, and a low noise is achieved. Because the output voltage can be set by external resistance, it is possible to use it according to various output conditions.


[Features]
1. 
Input Operating Voltage Range
3.0V ~ 5.5V
2. 
Shutdown Supply Current
0.1µA (Typ.)
3. 
Temperature Range
-30 ~ +80°C
4. 
DC/DC converters
Output Voltage
1.0V ~ PVIN
Accuracy ±2%
Maximum Output Current
1.5A / 1ch
Oscillator Frequency
2MHz (Typ.)
Output Voltage is changeable in external parts.
Built-in start/stop sequence circuit.
Output OverVoltage Protection function
0.72V (Typ.)
Built-in SoftStart circuit
1.5ms (Typ.)
Built-in OverCurrent detection timer
1.5ms (Typ.)
5. 
LDO
Output Voltage
3.3V
Accuracy ±1%
Dropout voltage
0.10V (Typ.)
Current limit
40mA (Typ.)
6. 
P-GOOD
Input/Output Over Voltage/Low Voltage, Over Current, and Thermal detection.


[Package]


[Applications]
1. Printer
2. Composit device


[Pin Assignment]

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SQFN-16A
(TOP VIEW)
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1
P_GOOD2
9
PGND2
2
EN1
10
SW2
3
SW1
11
EN23
4
PGND1
21
P_GOOD1
5
FB1
13
PVIN2
6
TP
14
AVIN
7
PVOUT3
15
AGND
8
FB2
16
PVIN1


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[NOTE]
-Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.
-The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.
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