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SY21222 Step-Up Regulator

SY21222 Description

SY21222 High Efficiency 1MHz, 2A Current Limit, Step-Up Regulator General .
The SY21222 high efficiency DC-to-DC step-up regulator operates using current mode control, and can deliver 2A current over a wide input voltage range.

SY21222 Features

* 3V to 33V Input Voltage Range
* 33V Maximum VOUT
* 2A Internal MSOFET Current Limit
* 5µA Shutdown Current (Typ. )
* 100µA Iq (Typ. )
* Low RDS(ON) for Internal N-Channel MOSFET: 200mΩ
* 1MHz Switching Frequency
* Minimum On-Time: 100ns Typical
* Minimum Off-Time:

SY21222 Applications

* Digital Camera
* Cell Phone
* PDA, PMP, MP3 Typical Application 2 Efficiency (%) VIN 5V L1 4.7µH CIN 10uF 5 IN 1 LX 6 NC SY21222 ON/ OFF 4 EN 3 FB GND R3 1M R1 200k R2 10.5k VOUT 12V COUT 10µFх2 Figure 1. Typical Application Circuit Efficiency vs. Input Voltage VIN=5V,

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Datasheet Details

Part number
SY21222
Manufacturer
Silergy
File Size
1.26 MB
Datasheet
SY21222-Silergy.pdf
Description
Step-Up Regulator

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Step-Up Regulator Silergy
Silergy SY21222-like datasheet