The LM2704 is a micropower step-up DC/DC in a small 5-lead SOT-23 package. A current limited, fixed off-time control scheme conserves operating current resulting in high efficiency over a wide range of load conditions. The 21V switch allows for output voltages as high as 20V. The low 400ns off-time permits the use of tiny, low profile inductors and capacitors to minimize footprint and cost in space-conscious portable applications. The LM2704 is ideal for LCD panels requiring low current and high efficiency as well as white LED applications for cellular phone back-lighting. The LM2704 can drive up to 8 white LEDs from a single Li‐Ion battery.

• 550mA, 0.7?, Internal Switch
• Uses Small Surface Mount Components
• Adjustable Output Voltage up to 20V
• 2.2V to 7V Input Range
• Input Undervoltage Lockout
• 0.01μA Shutdown Current
• Small 5-Lead SOT-23 Package

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• Vin (Min) (V)
• 2.2
• Vin (Max) (V)
• 7
• Vout (Min) (V)
• 1.24
• Vout (Max) (V)
• 20
• Switch current limit (Typ) (A)
• 0.55
• Regulated outputs (#)
• 1
• Switching frequency (Min) (kHz)
• 600
• Switching frequency (Max) (kHz)
• 2500
• Iq (Typ) (mA)
• 0.235
• Features
• Enable
• Duty cycle (Max) (%)
• 76
• Rating
• Catalog

LM2704的完整型号有：LM2704MF-ADJ/NOPB，以下是这些产品的关键参数及官网采购报价：

LM2704MF-ADJ/NOPB，工作温度：-40 to 85，封装：SOT-23 (DBV)-5，包装数量MPQ：1000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SN，TI官网LM2704MF-ADJ/NOPB的批量USD价格：.778（1000+）

LM2704EV — 具有 550mA 峰值电流限制的微功耗升压 DC DC 转换器

LM2704, Micropower Step-Up DC/DC Converter with 550mA Peak Current Limit

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