LM3670MF-ADJ/NOPB Semiconductors - ICs by Texas Instruments

DC/DC CONV ADJ SOT-23-5 POWERWISE

Status: Unknown
Series: -
RoHS: Unknown
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The LM3670 step-down DC-DC converter is optimized for powering ultralow voltage circuits from a single Li-Ion cell or three-cell NiMH/NiCd batteries. It provides up to 350-mA load current, over an input voltage range from 2.5 V to 5.5 V. There are several different fixed voltage output options available as well as an adjustable output voltage version. The device offers superior features and performance for mobile phones and similar portable applications with complex power management systems. Automatic intelligent switching between pulse width modulation (PWM) low-noise and pulse frequency modulation (PFM) low-current mode offers improved system control. During full-power operation, a fixed-frequency 1-MHz (typical) PWM mode drives loads from approximately 70 mA to 350 mA maximum, with up to 95% efficiency. Hysteretic PFM mode extends the battery life through reduction of the quiescent current to 15 µA (typical) during light current loads and system standby. Internal synchronous rectification provides high efficiency (90% to 95% typical at loads between 1 mA and 100 mA). In shutdown mode (enable (EN) pin pulled low) the device turns off and reduces battery consumption to 0.1 µA (typical). The LM3670 is available in a 5-pin SOT-23 package. A high switching frequency (1 MHz typical) allows use of tiny surface-mount components. Only three external surface-mount components, an inductor and two ceramic capacitors, are required.
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Specifications

Topology Buck (Step Down)
Input Voltage Min 2.5V
Input Voltage Max 5.5V
No. of Outputs 1Outputs
DC / DC Converter IC Case SOT-23
No. of Pins 5Pins
Output Current 350mA
Output Voltage Min 700mV
Output Voltage Max 3.3V
Switching Frequency 1.3MHz
Operating Temperature Max 85°C
Product Range -
Automotive Qualification Standard -
MSL MSL 1 - Unlimited
SVHC No SVHC (27-Jun-2018)
Adjustable Output Voltage Min 0.7V
Base Number 3670
Frequency 1MHz
Logic Function Number 3670
Operating Temperature Min -40°C
Operating Temperature Range -40°C to +85°C
Primary Input Voltage 5.5V
Supply Voltage Min 2.5V
Switch Output Current Isw Max 750mA
Termination Type Surface Mount Device
Voltage Regulator Type Step Down (Buck)

Alternative Descriptions

Miniature Step-Down DC-DC Converter for Ultra Low Voltage Circuits | Texas Instruments
DC/DC CONV, ADJ, SOT-23-5, POWERWISE | Farnell

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