Micropower Step-Up DC/DC Converter with 350mA Peak Current Limit


Product details


Vin (Min) (V) 2.2 Vin (Max) (V) 7 Vout (Min) (V) 1.24 Vout (Max) (V) 21 Switch current limit (Typ) (A) 0.35 Regulated outputs (#) 1 Switching frequency (Min) (kHz) 600 Switching frequency (Max) (kHz) 2500 Iq (Typ) (mA) 0.235 Features Enable Duty cycle (Max) (%) 76 Operating temperature range (C) -40 to 85 Rating Catalog open-in-new Find other Boost converters (integrated switch)

Package | Pins | Size

SOT-23 (DBV) 5 5 mm² 2.9 x 1.6 open-in-new Find other Boost converters (integrated switch)


  • 350mA, 0.7Ω, Internal Switch
  • Uses Small Surface Mount Components
  • Adjustable Output Voltage up to 21V
  • 2.2V to 7V Input Range
  • Input Undervoltage Lockout
  • 0.01µA Shutdown Current
  • Small 5-Lead SOT-23 Package

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The LM2703 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 22V switch allows for output voltages as high as 21V. 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 LM2703 is ideal for LCD panels requiring low current and high efficiency as well as white LED applications for cellular phone back-lighting. The LM2703 can drive up to 4 white LEDs from a single Li-Ion battery.

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Same functionality and pinout but is not an equivalent to the compared device:
LM2704 ACTIVE Micropower Step-up DC/DC Converter with 550mA Peak Current Limit Higher (550-mA) switch current limit.
LM2705 ACTIVE Micropower step-up DC/DC converter with 150mA peak current limit 150-mA Switch current limit.

Technical documentation

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Type Title Date
* Datasheet LM2703 Micropower Step-Up DC/DC Converter with 350mA Peak Current Limit datasheet (Rev. F) May 01, 2013
User guides AN-1277 LM2703/LM2704 Evaluation Board (Rev. A) Apr. 29, 2013

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SOT-23 (DBV) 5 View options

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