MAP3621

MAP3621 – 1-CH Average Current Control Buck Controller for LED Backlight Datasheet Version 1.0 MAP3621 1-CH Average Current Control Buck Controller for LED Backlight General Description Features MAP3621 is a single channel average-mode current control buck controller for LED backlight application. It does not require an additional dimming MOSFET and utilizes constant off-time control and average current control feedback without external loop compensation or high-side current sensing. MAP3621 features ±1% CS voltage accuracy and has dedicated Independent analog dimming input up to 3.3V. It can be powered from 8.5V ~ 18V supply. MAP3621 provides MOSFET DS short (FLT output), sense resistor short protection, SCP and UVLO. MAP3621 is available 14 leads SOIC with Halogenfree (fully RoHS compliant).  8.5V to 18V Input Voltage Range  Average-Mode Current Control  Mixed Programmable Constant Off-time  Up to 3.3V Analog Dimming  1% CS Voltage Accuracy  Direct PWM Dimming Input  Fault Output - MOSFET Drain-Source Short  Short Circuit Protection  Sense Resistor Short Protection  UVLO  14 Leads SOIC Package with Halogen-free Applications  High Brightness white LED backlighting for LCD TVs  General LED lighting applications Ordering Information Part Number MAP3621SIRH Top Marking MAP3621 Ambient Temperature Range -40℃ to +85℃ 1 Typical Application Package 14Leads SOIC RoHS Status Halogen Free VIN MAP3621 TOFF1 VCC TOFF2 GATE VCC CS PGND MODE FLT MODE ...