Technical Specifications
Parameters and characteristics for this part
| Specification | L5991AD13TR |
|---|---|
| Clock Sync | False |
| Control Features | Current Limit, Frequency Control, Soft Start |
| Duty Cycle (Max) [Max] | 93 % |
| Frequency - Switching [Max] | 1 MHz |
| Function | Step-Up/Step-Down |
| Mounting Type | Surface Mount |
| Number of Outputs | 1 |
| Operating Temperature [Max] | 150 °C |
| Operating Temperature [Min] | -40 °C |
| Output Configuration | Positive, Isolation Capable |
| Output Phases | 1 |
| Output Type | Transistor Driver |
| Package / Case | 16-SOIC |
| Package / Case [x] | 0.154 in |
| Package / Case [y] | 3.9 mm |
| Supplier Device Package | 16-SO |
| Synchronous Rectifier | True |
| Topology | Flyback |
| Voltage - Supply (Vcc/Vdd) [Max] | 20 V |
| Voltage - Supply (Vcc/Vdd) [Min] | 7.6 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Cut Tape (CT) | 1 | $ 1.83 | |
| 10 | $ 1.65 | |||
| 25 | $ 1.55 | |||
| 100 | $ 1.32 | |||
| 250 | $ 1.24 | |||
| 500 | $ 1.09 | |||
| Digi-Reel® | 1 | $ 1.83 | ||
| 10 | $ 1.65 | |||
| 25 | $ 1.55 | |||
| 100 | $ 1.32 | |||
| 250 | $ 1.24 | |||
| 500 | $ 1.09 | |||
| Tape & Reel (TR) | 2500 | $ 1.09 | ||
Description
General part information
L5991 Series
This primary controller I.C., developed in BCD60II technology, has been designed to implement off line or DC-DC power supply applications using a fixed frequency current mode control.
Based on a standard current mode PWM controller this device includes some features such as programmable soft start, IN/OUT synchronization, disable (to be used for over voltage protection and for power management), precise maximum Duty Cycle Control, 100ns leading edge blanking on current sense, pulse by pulse current limit, overcurrent protection with soft start intervention, and Standby function for oscillator frequency reduction when the converter is lightly loaded.
Documents
Technical documentation and resources