LM3668SD-2833/NOPB Semiconductors - ICs by Texas Instruments

DC/DC DUAL 3.3V 1A 12LLP FULL REEL

Status: Unknown
Series: -
RoHS: Unknown
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The LM3668 is a synchronous buck-boost DC-DC converter optimized for powering low voltage circuits from a Li-Ion battery and input voltage rails between 2.5 V and 5.5 V. It has the capability to support up to 1-A output current over the output voltage range. The LM3668 regulates the output voltage over the complete input voltage range by automatically switching between buck or boost modes depending on the input voltage. The LM3668 has 2 N-channel MOSFETS and 2 Pchannel MOSFETS arranged in a topology that provides continuous operation through the buck and boost operating modes. There is a MODE pin that allows the user to choose between an intelligent automatic PFM-PWM mode operation and forced PWM operation. During PWM mode, a fixedfrequency 2.2 MHz (typical) is used. PWM mode drives load up to 1 A. Hysteretic PFM mode extends the battery life through reduction of the quiescent current to 45 µA (typical) at light loads during system standby. Internal synchronous rectification provides high efficiency. In shutdown mode (EN pin pulled low), the device turns off and reduces battery consumption to 0.01 µA (typical). A high switching frequency of 2.2 MHz (typical) allows the use of tiny surface-mount components including a 2.2-µH inductor, a 10-µF input capacitor, and a 22-µF output capacitor.

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Prices starting from US$0.89

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Specifications

Topology Synchronous Buck-Boost
Input Voltage Min 2.8V
Input Voltage Max 5.5V
No. of Outputs 1Outputs
DC / DC Converter IC Case WSON
No. of Pins 12Pins
Output Current 1A
Output Voltage Min 2.8V
Output Voltage Max 3.3V
Switching Frequency 2.5MHz
Operating Temperature Max 85°C
Product Range -
Automotive Qualification Standard -
MSL MSL 1 - Unlimited
SVHC No SVHC (27-Jun-2018)
Operating Temperature Min -40°C
Output Voltage 3.3V
Primary Input Voltage 5.5V


Frequently Asked Questions

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The LM3668SD-2833/NOPB is listed under Electronic & Electrical Components > Semiconductors - ICs > Power Management.

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This part has not been flagged as RoHS Compliant.

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