LM5118MH Semiconductors - ICs by Texas Instruments

BUCK/BOOST CONTROL 3~75V POWERWISE

Electronic & Electrical Components>Semiconductors - ICs>Power Management

Status:	Unknown
Series:	-
RoHS:	Unknown

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The LM5118 wide voltage range Buck-Boost switching regulator controller features all of the functions necessary to implement a high performance, cost efficient Buck-Boost regulator using a minimum of external components. The BuckBoost topology maintains output voltage regulation when the input voltage is either less than or greater than the output voltage, making it especially suitable for automotive applications. The LM5118 operates as a buck regulator while the input voltage is sufficiently greater than the regulated output voltage and gradually transitions to the buck-boost mode as the input voltage approaches the output. This dual mode approach maintains regulation over a wide range of input voltages with optimal conversion efficiency in the buck mode and a glitch-free output during mode transitions. This easy-to-use controller includes drivers for the high side buck MOSFET and the low side boost MOSFET. The regulators control method is based upon current mode control utilizing an emulated current ramp. Emulated current mode control reduces noise sensitivity of the pulse-width modulation circuit, allowing reliable control of the very small duty cycles necessary in high input voltage applications. Additional protection features include current limit, thermal shutdown and an enable input. The device is available in a power enhanced HTSSOP-20 package featuring an exposed die attach pad to aid thermal dissipation.

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Specifications

Supply Voltage Min	4.75V
Supply Voltage Max	14V
No. of Outputs	1 Output, 1Outputs
Duty Cycle (%)	80%
Controller IC Case Style	HTSSOP
No. of Pins	20Pins
Switching Frequency	575kHz
Topology	Buck-Boost
Operating Temperature Min	-40°C
Operating Temperature Max	125°C
Product Range	-
Automotive Qualification Standard	-
RoHS Phthalates Compliant	Yes
MSL	MSL 1 - Unlimited
SVHC	No SVHC (27-Jun-2018)
Frequency	500kHz
Input Voltage Max	75V
Input Voltage Min	3V
Operating Temperature Range	-40°C to +125°C
Output Current	2.7A
Output Current Max	2.7A
Output Voltage Max	70V
Output Voltage Min	1.23V
Primary Input Voltage	75V
Termination Type	Surface Mount Device
Voltage Regulator Type	Adjustable

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The LM5118MH is listed under Electronic & Electrical Components > Semiconductors - ICs > Power Management.

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