L5991D
PWM Controller, 16V-14V supply, 1 MHz, 1.5A out, NSOIC-16
| Manufacturer | STMICROELECTRONICS |
|---|---|
| Manufacturer Part No | L5991DCopy |
| Manufacturer Standard Lead Time | 19 weeks |
| Newark Part No. | 38Y7872 |
| Your Part Number | |
| Technical Datasheet |
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| Quantity | Price |
|---|---|
| 1+ | $2.280 |
| 10+ | $1.900 |
| 100+ | $1.600 |
| 500+ | $1.490 |
| 1000+ | $1.410 |
| 2500+ | $1.380 |
| 10000+ | $1.350 |
Product Information
| Manufacturer | STMICROELECTRONICS |
|---|---|
| Manufacturer Part No | L5991DCopy |
| Manufacturer Standard Lead Time | 19 weeks |
| Newark Part No. | 38Y7872 |
| Technical Datasheet | |
| Power Supply Controller Type | Primary Side Controller |
| No. of Channels | 1Channels |
| Control Mode | Current Mode Control |
| Supply Voltage Min | 14V |
| Supply Voltage Max | 16V |
| IC Case / Package | NSOIC |
| No. of Pins | 16Pins |
| IC Mounting | Surface Mount |
| Switching Frequency Typ | - |
| Switching Frequency Min | - |
| Switching Frequency Max | 1MHz |
| Duty Cycle Min | 0% |
| Duty Cycle Max | 93% |
| Topology | Boost, Flyback |
| Operating Temperature Min | -40°C |
| Operating Temperature Max | 150°C |
| Product Range | - |
| Qualification | - |
| MSL | MSL 3 - 168 hours |
| SVHC | No SVHC (25-Jun-2025) |
| Automotive Qualification Standard | - |
| Controller IC Case Style | NSOIC |
| Frequency | 1MHz |
| Input Voltage | - |
| Output Current | 1.5A |
| Output Voltage | - |
Product Overview
The L5991D is a Primary Pulse Width Modulation (PWM) Controller with standby. It is 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.
- Current-mode control PWM
- Fully latched PWM logic with double pulse suppression
- Programmable duty cycle
- Standby function
- Programmable soft-start
- Primary overcurrent fault detection with re-start delay
- PWM UVLO with hysteresis
- IN/OUT Synchronization
- Latched disable
- Internal 100ns leading edge blanking of current sense
Technical Specifications
| Power Supply Controller Type | Primary Side Controller |
|---|---|
| Control Mode | Current Mode Control |
| Supply Voltage Max | 16V |
| No. of Pins | 16Pins |
| Switching Frequency Typ | - |
| Switching Frequency Max | 1MHz |
| Duty Cycle Max | 93% |
| Operating Temperature Min | -40°C |
| Product Range | - |
| MSL | MSL 3 - 168 hours |
| Automotive Qualification Standard | - |
| Frequency | 1MHz |
| Output Current | 1.5A |
| No. of Channels | 1Channels |
|---|---|
| Supply Voltage Min | 14V |
| IC Case / Package | NSOIC |
| IC Mounting | Surface Mount |
| Switching Frequency Min | - |
| Duty Cycle Min | 0% |
| Topology | Boost, Flyback |
| Operating Temperature Max | 150°C |
| Qualification | - |
| SVHC | No SVHC (25-Jun-2025) |
| Controller IC Case Style | NSOIC |
| Input Voltage | - |
| Output Voltage | - |
Technical Docs (2)
Legislation and Environmental
| US ECCN: | EAR99 |
|---|---|
| EU ECCN: | Unknown |
| RoHS Compliant: | Yes RoHS |
| RoHS Phthalates Compliant: | Yes RoHS |
| SVHC: | No SVHC (25-Jun-2025) |
| Download Product Compliance Certificate | Product Compliance Certificate |