TPS92001 Datasheet, PDF (1/14 Pages) Texas Instruments – GENERAL PURPOSE LED LIGHTING PWM CONTROLLER

TPS92001, TPS92002
www.ti.com
SLUSA24 – FEBRUARY 2010
GENERAL PURPOSE LED LIGHTING PWM CONTROLLER
Check for Samples: TPS92001, TPS92002
FEATURES
1
• 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
DEVICE
NUMBER
TPS92001
TPS92002
TURN-ON
THRESHOLD (V)
10
15
TURN-OFF
THRESHOLD (V)
8
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
EMI
Filter
TRIAC
Dimming
Control
TPS92001/2
Linear
Regulator
1 CS
REF 8
2 SS
VDD 7
3 RTC
GD 6
4 RTD
GND 5
UDG-10003
1
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Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2010, Texas Instruments Incorporated