HV9912NG-G
LED Driver 16-Pin SOIC N
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Part Number : HV9912NG-G
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Package/Case : SOIC-16
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Brands : Microchip Technology
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Components Categories : LED Drivers
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Datesheet : HV9912NG-G DataSheet (PDF)
Overview of HV9912NG-G
The HV9912 is a current mode control LED driver IC designed to control single switch PWM converters (buck, boost, buck-boost or SEPIC) in a constant frequency mode. The controller uses a peak current-mode control scheme with programmable slope compensation and includes an internal transconductance amplifier to control the output current in closed loop enabling high output current accuracy (in the case of buck and buck-boost converters, the output current can be sensed using a high side current sensor like the HV7800). In the constant frequency mode, multiple HV9912 ICs can by synchronized to each other or to an external clock using the SYNC pin. Programmable MOSFET current limit enables current limiting during input under voltage and output overload conditions. The IC also includes a 0.2A source and 0.4A sink gate driver that makes the HV9912 suitable for high power applications. An internal 90V linear regulator powers the IC eliminating the need for a separate power supply for the IC. The IC also provides a FAULT output, which can be used to disconnect the LEDs in case of a fault condition using an external disconnect FET. HV9912 also provides a TTL compatible, low-frequency PWM dimming input that can accept an external control signal with a duty ratio of 0-100% and a frequency of up to a few kilohertz. The HV9912 includes hiccup protection from both short and open circuits, with automatic recovery after the fault condition is cleared.The HV9912 is a pin compatible replacement to HV9911. It is compatible with existing HV9911 designs which have an input voltage of less than 90V by changing ROVP1, ROVP, and RT.
Key Features
- Buck
- Boost
- Buck-boost and SEPIC
- Works with high side current sensors
- Closed loop control of output current
- High PWM dimming ratio
- Internal 90V linear regulator (can be extended using external Zener diodes)
- Internal 2% voltage reference (0°C < TA < 85°C)
- Constant frequency operation
- Programmable slope compensation
- Linear & PWM dimming
- +0.2A/-0.4A gate drive
- Hiccup mode protection for both short circuit and open circuit conditions
- Synchronization capability
- Pin compatible with HV9911
Specifications
The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.
Product Category | LED Lighting Drivers | RoHS | Details |
Mounting Style | SMD/SMT | Package / Case | SOIC-Narrow-16 |
Number of Outputs | 1 Output | Output Current | 18 uA |
Input Voltage, Min | 9 V | Input Voltage, Max | 90 V |
Topology | Boost, Buck, SEPIC | Operating Frequency | 580 kHz |
Output Voltage | Adjustable | Minimum Operating Temperature | - 40 C |
Maximum Operating Temperature | + 85 C | Features | PWM Dimming, Short Circuit and Thermal Protection |
Brand | Microchip Technology | For Use With | High Current LEDs |
High Level Output Current | 200 mA | Input Voltage | 9 V to 90 V |
Low Level Output Current | 400 mA | Moisture Sensitive | Yes |
Number of Channels | 1 Channel | Pd - Power Dissipation | 1.2 W |
Product Type | LED Lighting Drivers | Factory Pack Quantity | 45 |
Subcategory | Driver ICs | Supply Current - Max | 1.5 mA |
Unit Weight | 0.019312 oz |
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