TPS92690-Q1 Datasheet, PDF (1/41 Pages) Texas Instruments – N-Channel Controller for Dimmable LED Drives

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TPS92690-Q1
SLVSCU0 – NOVEMBER 2015
TPS92690-Q1 N-Channel Controller for Dimmable LED Drives
With Low-Side Current Sense
1 Features
•1 TPS9260-Q1 is an Automotive Grade Product
That is AEC-Q100 Grade 1 Qualified
• Input Voltage Range from 4.5 to 75 V
• Adjustable Current Sense (50 to 500 mV)
• Low-Side Current Sensing
• 2-Ω MOSFET Gate Driver
• Input Undervoltage Protection
• Output Overvoltage Protection
• Cycle-by-Cycle Current Limit
• PWM Dimming Input
• Programmable Oscillator Frequency
• External Synchronization Capability
• Slope Compensation
• Programmable Soft-Start Function
• HTSSOP (PWP), 16-Pin, Exposed Pad Package
2 Applications
• LED Drivers
• Constant Current Regulator: Boost, Cuk, Flyback,
and SEPIC
3 Description
The TPS92690-Q1 device is a high-voltage, low-side
NFET controller with an adjustable output current
sense resistor voltage. Ideal for LED drivers, it
contains all of the features needed to implement
current regulators based on boost, SEPIC, flyback,
and Cuk topologies.
Output current regulation is based on peak current-
mode control supervised by a control loop. This
methodology eases the design of loop compensation
while providing inherent input voltage feed-forward
compensation. The TPS92690-Q1 device includes a
high-voltage start-up regulator that operates over a
wide input range between 4.5 and 75 V. The PWM
controller is designed for high-speed capability
including an oscillator frequency range up to 2 MHz.
The TPS92690-Q1 device includes an error amplifier,
precision reference, cycle-by-cycle current limit, and
thermal shutdown.
The TPS92690-Q1 device is AEC-Q100 Grade 1
qualified.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS92690-Q1
HTSSOP (16)
5.00 mm × 4.40 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Application
V_IN
V_OUT
V_OUT
TPS92690
1 nDIM
VIN 16
2 OVP
3 RT
VCC 15
IS 14
4 SYNC GATE 13
5 SS/SD PGND 12
6 COMP CSP 11
7 AGND IADJ 10
8 ILIM
VREF 9
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.