Product Summary
The LM3670MF-1.8 is a step-down DC-DC converter. It is optimized for powering ultra-low voltage circuits from a single Li-Ion cell or 3 cell NiMH/NiCd batteries. The LM3670MF-1.8 provides up to 350 mA load current, over an input voltage range from 2.5V to 5.5V. There are several different fixed voltage output options available as well as an adjustable output voltage version. The applications of the LM3670MF-1.8 include Mobile phones, Hand-Held Radios, Personal Digital Assistants, Palm-top PCs, Portable Instruments, Battery Powered Devices.
Parametrics
LM3670MF-1.8 absolute maximum ratings: (1)VIN Pin: Voltage to GND: -0.2V to 6.0V; (2)EN Pin: Voltage to GND: -0.2V to 6.0V; (3)FB, SW Pin: (GND-0.2V) to (VIN + 0.2V); (4)Junction Temperature (TJ-MAX): -45 to +125℃; (5)Storage Temperature Range: -45 to +150℃; (6)Maximum Lead Temperature (Soldering, 10 sec.): 260℃.
Features
LM3670MF-1.8 features: (1)VOUT = adj (.7V min), 1.2, 1.5, 1.6, 1.8, 1.875, 2.5, 3.3V; (2)2.5V≤VIN≤5.5V; (3)15 μA typical quiescent current; (4)350 mA maximum load capability; (5)1 MHz PWM fixed switching frequency (typ.); (6)Automatic PFM/PWM mode switching; (7)Available in fixed output voltages as well as an adjustable version; (8)SOT23-5 package; (9)Low drop out operation - 100% duty cycle mode; (10)Internal synchronous rectification for high efficiency; (11)Internal soft start; (12)0.1 μA typical shutdown current; (13)Operates from a single Li-Ion cell or 3 cell NiMH/NiCd batteries; (14)Only three tiny surface-mount external components required (one inductor, two ceramic capacitors); (15)Current overload protection.
Diagrams
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![]() LM3670MF-1.8 |
![]() National Semiconductor (TI) |
![]() DC/DC Switching Controllers |
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![]() LM3670MF-1.8/NOPB |
![]() National Semiconductor (TI) |
![]() DC/DC Switching Controllers |
![]() Data Sheet |
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![]() LM3670MF-1.8EV |
![]() National Semiconductor (TI) |
![]() Power Management IC Development Tools LM3670 EVAL BOARD |
![]() Data Sheet |
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![]() LM3670MF-1.875/NOPB |
![]() National Semiconductor (TI) |
![]() DC/DC Switching Controllers |
![]() Data Sheet |
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![]() LM3670MF-1.875 |
![]() National Semiconductor (TI) |
![]() DC/DC Switching Controllers |
![]() Data Sheet |
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