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.
| 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 |
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