TPS61161QDRVRQ1 ,Automotive White LED Driver with Digital and PWM Brightness Control in 2mm x 2mm QFN Package 6-WSON -40 to 125Features 3 DescriptionWith a 40-V rated integrated switch FET, the1• Qualified for Automotive Appli ..
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TPS61161QDRVRQ1
Automotive White LED Driver with Digital and PWM Brightness Control in 2mm x 2mm QFN Package 6-WSON -40 to 125
VIN SW
CTRL
TPS61161–Q1
ON/OFF
DIMMING
CONTROL
38 V MaxHm
Fm
220 nF
setFm
L1: TDK VLCF5020T-220MR75-1
C1: Murata GRM188R61E105K
3 V to 18 VIProduct
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TPS61161-Q1SLVSA18A –SEPTEMBER 2009–REVISED JULY 2015
TPS61161-Q1 White Led Driver with Digital and Pwm Brightness Control for up to 10
LEDsIn Series Features 3 DescriptionWith a 40-V rated integrated switch FET, the Qualifiedfor Automotive Applications TPS61161-Q1isa boost converter that drives upto• 2.7-Vto 18-V Input Voltage Range 10 LEDsin series. The boost converter runsat 600-• 38-V Open LED Protection for10 LEDs kHz fixed switching frequencyto reduce output ripple,
improve conversion efficiency, and allow for the use• 200-mV Reference Voltage With ±2% Accuracy of small external components.• Flexible Digital and PWM Brightness Control
The default white LED currentis set with the external• Built-In Soft Start sensor resistor Rset, and the feedback voltageis• Upto 90% Efficiency regulated to 200 mV, as shown in the typical• 2-mm× 2-mm× 0.8-mm 6-pin QFN (DRV) application. During the operation, the LED current canPackage With Thermal Pad be controlled using the 1-wire digital interface
(EasyScale™ protocol) through the CTRL pin.
Alternatively,a pulse width modulation (PWM) signal
2 Applicationscan be appliedto the CTRL pin through which the• Automotive Cluster Backlighting duty cycle determines the feedback reference• High-Brightness LED Lighting voltage. In either digital or PWM mode, the
TPS61161-Q1 does not burst the LED current;• White LED Backlighting Media Form Factor
therefore,it does not generate audible noises on theDisplays output capacitor. For maximum protection, the device
features integrated open LED protection that disables
the TPS61161-Q1 to prevent the output from
exceeding the absolute maximum ratings during open
LED conditions.
The TPS61161is availableina space-saving, 2-mm 2-mm QFN (DRV) package with thermal pad.
Device Information(1)(1) Forall available packages, see the orderable addendumat
the endofthe data sheet.
Typical Application
