Part Number: LM5015

Function: High Voltage Monolithic Two-Switch Forward DC-DC Regulator

Package: HTSSOP-14EP (Exposed Pad) Type

Manufacturer: Texas Instruments

Pinouts:

 

Description

The LM5015 high voltage switch mode regulator features all the functions necessary to implement efficient high voltage Two-Switch Forward and Two-Switch Flyback regulators, using a minimum of external components. This easy to use regulator integrates high side and low side 75 Volt N-Channel MOSFETs with a minimum 1 Amp peak current limit.

The voltage across the MOSFETs employed in the two-switch topology is clamped to the input voltage, allowing the input voltage range to approach the rating of the MOSFETs. The regulator control method is based on current mode control providing inherent ease of loop compensation and line feed-forward for superior rejection of input transients.

A forward DC-DC regulator is an electronic circuit that is used to convert an input DC voltage to a different output DC voltage level. It is a type of DC-DC converter that operates by transferring energy from the input to the output through an inductor and a transformer.

The operation of a forward DC-DC regulator can be controlled by varying the duty cycle of the switching signal. By adjusting the on-time and off-time of the switch, the amount of energy transferred from the input to the output can be regulated, allowing the output voltage to be maintained at a constant level even when the input voltage or load current changes.

Features

• Dual Integrated 75V N-Channel MOSFETs
• Ultra-Wide Input Voltage Range: 4.25V to 75V
• Integrated High Voltage Bias Regulator
• Adjustable Output Voltage
• 1.5% Feedback Reference Accuracy
• Current Mode Control with Selectable Compensation
• Wide Bandwidth Error Amplifier
• Integrated Current Sensing and Limiting
• 50% Maximum Duty Cycle Limit
• Single Resistor Oscillator Programming
• Oscillator Synchronization Capability
• Programmable Soft-Start
• Enable / Under-Voltage Lockout (UVLO) Pin
• Thermal Shutdown

Other data sheets are available within the file:

LM5015MH/NOPB, LM5015MHE/NOPB, LM5015MHX/NOPB

LM5015 Datasheet PDF Download

Part Number: LP2950

Function: Adjustable Micropower Voltage Regulators with Shutdown

Package: TO-92 Type

Manufacturer: Texas Instruments

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Description

The LP2950 and LP2951 devices are bipolar, low-dropout voltage regulators that can accommodate a wide input supply-voltage range of up to 30 V. The easy-to-use, 3-pin LP2950 is available in fixed-output voltages of 5 V, 3.3 V, and 3 V. However, the 8-pin LP2951 is able to output either a fixed or adjustable output from the same device. By tying the OUTPUT and SENSE pins together, and the FEEDBACK and VTAP pins together, the LP2951 outputs a fixed 5 V, 3.3 V, or 3 V (depending on the version). Alternatively, by leaving the SENSE and VTAP pins open and connecting FEEDBACK to an external resistor divider, the output can be set to any value between 1.235 V to 30 V.

Pinouts:

Features

1. Wide Input Range: Up to 30 V

2. Rated Output Current of 100 mA

3. Low Dropout: 380 mV (Typ) at 100 mA

4. Low Quiescent Current: 75 μA (Typ)

5. Tight Line Regulation: 0.03% (Typ)

6. Tight Load Regulation: 0.04% (Typ)

7. High VO Accuracy
(1) 1.4% at 25°C
(2) 2% Over Temperature

8. Can Be Used as a Regulator or Reference

9. Stable With Low ESR (>12 mΩ) Capacitors

10. Current- and Thermal-Limiting Features

11. LP2950 Only (3-Pin Package) – Fixed-Output Voltages of 5 V, 3.3 V, and 3 V

12. LP2951 Only (8-Pin Package) – Fixed- or Adjustable-Output Voltages:

13. 5 V/ADJ, 3.3 V/ADJ, and 3 V/ADJ
(1) Low-Voltage Error Signal on Falling Output
(2) Shutdown Capability
(3) Remote Sense Capability for Optimal

14. Output Regulation and Accuracy

 

Applications:

1. Applications with High-Voltage Input

2. Power Supplies

Official Homepage: https://www.ti.com/product/LP2950

 

 

Other data sheets are available within the file: LP-2950

 

LP2950 Datasheet PDF