LM5008EVAL: 10V @ 300mA, 12 ~ 95V in

Summary

The LM5008 Step down switching regulator features all of the functions needed to implement low cost, efficient, Buck bias regulators. This high voltage regulator contains a 100V, 0.5A N-channel Buck switch.

The regulator is based on hysteretic control scheme using an on-time inversely proportional to input voltage (VIN). This feature allows the operating frequency to remain relatively constant with load and input voltage voltage variations. The hysteretic control requires no control loop compensation, while providing fast load transient response. Additional protection features include: Thermal Shutdown, VCC undervoltage lockout and maximum duty–cycle limiter.

LM5008 can be used in numerous applications to efficiently regulate step down higher voltage inputs. This regulator is well suited for 48V telecom and the new 42V automotive power bus ranges.

Specifications

Manufacturer	Texas Instruments
Category	AC/DC and DC/DC Conversion
Sub-Category	DC/DC SMPS - Single Output
Eval Board Part Number	296-LM5008EVAL/NOPB-ND
Eval Board Supplier	Texas Instruments
Eval Board	Normally In Stock
Topology	Step Down
Outputs and Type	1 Non-Isolated
Voltage Out: Factory Set	10 V
Current Out	300 mA
Voltage In	12 ~ 95 V
Efficiency @ Conditions	>90%, 15V in, 10V @ 120 ~ 300 mA >85%, 30V in, 10V @ 100 ~ 300 mA >80%, 70V in, 10V @ 150 ~ 300 mA >80%, 50V in, 10V @ 100 ~ 300 mA >75%, 90V in, 10V @ 120 ~ 300 mA
Voltage Out Range	- Not Given
Features	Current Limit (Adj. or Fixed) Thermal Protection Under Voltage Protection, Brown-Out
Switching Frequency	250 kHz
Standby Current [Typical]	76 µA
Quiescent Current [Typical]	485 µA
Component Count + Extras	13 + 3
Internal Switch	Yes
Design Author	Texas Instruments
Application / Target Market	Automotive Telecom
Standby Current [Maximum]	150 µA
Quiescent Current [Maximum]	675 µA
Main I.C. Base Part	LM5008
Date Created By Author
Date Added To Library	2011-03