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Details for LM3670MF-3.3/NOPB by Texas Instruments
Electronic & Electrical Components > Semiconductors - ICs > Power Management
IC DC DC CONVERTER FULL REEL
LM3670MF-3.3/NOPB image

LM3670MF-3.3/NOPB by Texas Instruments

IC DC DC CONVERTER FULL REEL
Features
0.1-u00b5A Typical Shutdown Current
1-MHz PWM Fixed Switching Frequency (Typical)
15-u00b5A Typical Quiescent Current
350-mA Maximum Load Capability
Adjustable Output Voltages (VOUT): 0.7 V to 2.5 V
Automatic PFM and PWM Mode Switching
Current Overload Protection
Fixed Output Voltages: 1.2 V, 1.5 V, 1.6 V, 1.8 V, 1.875 V, 3.3V
Input Voltage Range: 2.5 V to 5.5 V
Internal Soft Start
Internal Synchronous Rectification for High Efficiency
Low Dropout Operation u2013 100% Duty Cycle Mode
Only Three Tiny Surface-Mount External
Operates from a Single Li-Ion Cell or Three-Cell NiMH/NiCd Batteries
Part Information
LM3670MF-3.3/NOPB image
RoHS Compliant
Description
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.
Specifications
Topology:
Buck (Step Down)
Input Voltage Min:
2.5V
Input Voltage Max:
5.5V
DC / DC Converter IC Case:
SOT-23
No. of Pins:
5Pins
Output Current:
350mA
Output Voltage Nom.:
3.3V
Switching Frequency:
1MHz
Operating Temperature Max:
85°C
Product Range:
-
Automotive Qualification Standard:
-
RoHS Phthalates Compliant:
Yes
MSL:
MSL 1 - Unlimited
SVHC:
No SVHC (27-Jun-2018)
Accuracy %:
4%
Adjustable Output Voltage Min:
0.7V
Base Number:
3670
Frequency:
1MHz
No. of Outputs:
1Outputs
Operating Temperature Min:
-40°C
Operating Temperature Range:
-40°C to +85°C
Output Voltage:
3.3V
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)
Alternate Descriptions
STEP-DOWN DC/DC CONVERTER, 5-SOT-23; Topology:Buck (Step Down); Input Voltage Min:2.5V; Input Voltage Max:5.5V; DC / DC Converter IC Case:SOT-23; No. of Pins:5Pins; Output Current:350mA; Switching Frequency:1MHz; Product Range:- RoHS Compliant: Yes Newark Electronics
Conv DC-DC Single Step Down 2.5V to 5.5V 5-Pin SOT-23 T/R Avnet America
Conv DC-DC Single Step Down 2.5V to 5.5V 5-Pin SOT-23 T/R Avnet Europe