Microchip HV9912NG-G-M901

Manufacturer No:

HV9912NG-G-M901

Manufacturer:

Microchip

Package:

16-SOIC (0.154, 3.90mm Width)

Description:

SWITCH-MODE LED DRIVER IC WITH HIGH CURRENT ACCURACY

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HV9912NG-G-M901 information

Microchip HV9912NG-G-M901 technical specifications, attributes, parameters and parts with similar specifications to Microchip HV9912NG-G-M901.

Type
Parameter

Topology
Boost, SEPIC, Buck-Boost

+Vin min (V)
9.0

+Vin max (V)
100

Output Current
External FET

Dimming
PWM / Linear

Package
SOIC-16

Product Type
DC/DC

VOUT
0

llim Typ (A)
0

llim Max (A)
0

lq Typ
1.5mA

Vfb (V)
0

VEN (V)
0

Oja (C/W)
82

Download datasheets and manufacturer documentation for Microchip HV9912NG-G-M901.

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.

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

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