Suitable for Storage Devices, with Built-in DC-DC Converter and Reset for Switching Low-noise Products
Compound Power Supply IC
MM3485 Series
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Announced on September 24, 2010 |
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■Overview
The <MM3485 Series> are power ICs developed with a built-in DC-DC converter 2ch and reset circuit featuring reverse-phase control for noise reduction and including reset and regulator functions (B-rank), making them suitable for storage devices.
§ Features
1. |
Built-in 2ch DC/DC converter and reset circuit |
2. |
DC/DC converter realizes reduced noise with reverse-phase control |
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With A-rank products, the DC/DC converter can be switched ON/OFF independently |
4. |
For B-rank products, a 2.5V regulator is built-in |
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Feedback resistor and phase compensation built-in to allow a circuit construction with few parts. |
§ Main specifications
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Power supply voltage range |
4.5 to 5.5V |
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DC/DC Output voltage |
1.25V/3.4(A-rank), 1.25V/3.3V(B-rank) |
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DC/DC Output current |
800 mA (both A and B rank) |
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Oscillation frequency |
1MHz (A-rank), 1.5MHz (B-rank) |
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Reset detection voltage |
1.0V/2.9V (monitors each output, both A and B-rank) |
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Reset delay |
50ms (A-rank)/150ms (B-rank)
(With external capacitor of 0.1uF) |
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External dimensions |
6.5×6.4×1.1(Unit:mm) |
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Package |
TSOP-20 |
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