1FEATURES
• Ideal for Single Stage Designs
• Supports Isolated and Non-Isolated
Topologies
• Phase-Cut TRIAC Dimmable
• Few External Components Mode Operation
• Wide Duty Cycle Range for Wide-Input Voltage
or Dimming Range
• Convenient 5-V Reference Output
• Undervoltage Lockout for Safe Operation
• Operation to 1-MHz
• 0.4-A Source/0.8-A Sink FET Driver
• Low 100-μA Startup Current

APPLICATIONS
• Residential LED Lighting Drivers for A19
E12/E26/27, GU10, MR16, PAR30/38 Integral
Lamps
• Drivers for Wall Sconces, Pathway Lighting
and Overhead Lighting
• Drivers for Wall Washing, Architectural and Display Lighting

DESCRIPTION
The TPS92001/2 family of general LED lighting PWM
controllers contains control and drive circuitry
required for off-line isolated or non-isolated LED
lighting applications.
The controllers can support Phase Cut TRIAC
dimming with minimal external components. The
controllers can also be implemented for stage
conversion where the power factor (PF) exceeds
regulatory requirements for lighting. These controllers
also have an accessible 5-V reference that could be
used to power a microcontroller or other low power
peripheral components. The controllers operate in
fixed frequency current mode switching with minimal
external parts count. Internally implemented circuits
include undervoltage lockout featuring startup current
less than 100 μA, logic to ensure latched operation, a
PWM comparator, and a totem pole output stage to
sink or source peak current. The output stage,
suitable for driving N-Channel MOSFETs, is low in
the off state. Oscillator frequency and maximum duty
cycle are programmed with two resistors and a
capacitor.
The TPS92001/2 family also features full cycle soft start. The family offers UVLO thresholds and
hysteresis levels for off-line and DC-to-DC systems.
The TPS92001/2 is offered in the 8-pin MSOP (DGK)
and 8-pin SOIC (D) packages. The small MSOP
package makes the device ideally suited for
applications where board space and height are at a
premium.