SOT-23-5
0.6 V to 4.5 V
1.5 A
1 Output
企业名:深圳市中立信电子科技有限公司
类型:贸易/代理/分销
电话:
0755-23956688
0755-23956688
手机:13410226883
联系人:叶先生/王先生
邮箱:sales@zlxele.com
地址:广东深圳深圳市福田区彩田路彩虹新都大厦彩荟阁7A室
1 Features 3 Description
The LM2831 regulator is a monolithic, high1•
Space-Saving SOT-23 Package
frequency, PWM step-down DC-DC converter in a 5-
• Input Voltage Range of 3 V to 5.5 V pin SOT-23 and a 6-Pin WSON package. The
• Output Voltage Range of 0.6 V to 4.5 V LM2831 provides all the active functions to provide
• 1.5-A Output Current local DC-DC conversion with fast transient response
and accurate regulation in the smallest possible PCB • High Switching Frequencie
area. With a minimum of external components, the
– 1.6 MHz (LM2831X) LM2831 is easy to use. The ability to drive 1.5-A
– 0.55 MHz (LM2831Y) loads with an internal 130-mΩ PMOS switch using
state-of-the-art 0.5-μm BiCMOS technology results in – 3 MHz (LM2831Z) the best power density available. The world-class
• 130-mΩ PMOS Switch control circuitry allows on-times as low as 30 ns, thus
• 0.6-V, 2% Internal Voltage Reference supporting exceptionally high frequency conversion
over the entire 3 V to 5.5 V input operating range, • Internal Soft Start
down to the minimum output voltage of 0.6 V.
• Current Mode, PWM Operation Switching frequency is internally set to 550 kHz, 1.6
• Thermal Shutdown MHz, or 3 MHz, allowing the use of extremely small
• Overvoltage Protection surface mount inductors and chip capacitors. Even
though the operating frequency is high, efficiencies of
2 Applications up to 93% are easy to achieve. External shutdown is
included, featuring an ultra-low standby current of 30
• Local 5 V to Vcore Step-Down Converters nA. The LM2831 utilizes current-mode control and
• Core Power in HDDs internal compensation to provide high-performance
regulation over a wide range of operating conditions. • Set-Top Boxes
Additional features include internal soft-start circuitry
• USB Powered Devices to reduce inrush current, pulse-by-pulse current limit,
• DSL Modems thermal shutdown, and output overvoltage protection.
企业名:深圳市中立信电子科技有限公司
类型:贸易/代理/分销
电话:
0755-23956688
0755-23956688
手机:13410226883
联系人:叶先生/王先生
邮箱:sales@zlxele.com
地址:广东深圳深圳市福田区彩田路彩虹新都大厦彩荟阁7A室