LM3668SD-2833/NOPB

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Series Information for LM3668SD-2833/NOPB - Texas Instruments

Description

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

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

Alternate Descriptions

Avnet America

Conv DC-DC Single Non-Inv/Inv/Step Up/Step Down 2.5V to 5.5V 12-Pin LLP EP T/R

Avnet America product

Avnet Europe

Conv DC-DC Single Non-Inv/Inv/Step Up/Step Down 2.5V to 5.5V 12-Pin LLP EP T/R

Avnet Europe product

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