TPS61162D_016 Datasheet, PDF (1/31 Pages) Texas Instruments – TPS61162D Dual-Channel WLED Drivers for Smart Phones

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TPS61162D
SLVSC13A – JULY 2013 – REVISED MARCH 2016
TPS61162D Dual-Channel WLED Drivers for Smart Phones
1 Features
•1 2.7-V to 6.5-V Input Voltage
• Integrated 1.5-A/40-V MOSFET
• 1.2-MHz Switching Frequency
• Dual Current Sinks of up to 30-mA Current Each
• 1% Typical Current Matching and Accuracy
• 26.5-V Overvoltage Protection Threshold
• Adaptive Boost Output to WLED Voltages
• Very Low Voltage Headroom Control (90 mV)
• Flexible Digital and PWM Brightness Control
• One-Wire Control Interface (EasyScale™)
• PWM Dimming Control Interface
• Up to 100:1 PWM Dimming Ratio
• Up to 10-Bit Dimming Resolution
• Up to 90% Efficiency
• Built-in Soft Start
• Built-in WLED Open and Short Protection
• Thermal Shutdown
• Supports 4.7-µH Inductor Application
2 Applications
• Smart Phones
• PDAs, Handheld Computers
• GPS Receivers
• Backlight for Small and Media Form Factor LCD
Display With Single-Cell Battery Input
3 Description
The TPS61162D is a dual-channel WLED driver
which provides highly integrated solutions for single-
cell Li-ion-battery-powered smart-phone backlighting.
The device has a built-in high efficiency boost
regulator with integrated 1.5-A/40-V power MOSFET
and can support as low as 2.7-V input voltage. With
two high current-matching capability current sink
regulators, the device can drive up to 7s2p WLED
diodes. The boost output can automatically adjust to
the WLED forward voltage, allowing very low voltage
headroom control, thus improving LED strings
efficiency effectively.
The TPS61162D supports both the PWM dimming
interface and one-wire digital EasyScale dimming
interface and can realize 9-bit brightness code
programming.
The TPS61162D integrates built-in soft start,
overvoltage, and overcurrent protection, as well as
thermal shutdown protections.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (MAX)
TPS61162D
DSBGA (9)
1.336 mm × 1.336 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
2.7 V to 6.5 V
VBAT
C1
1 µF
R2
10
C3
1 µF
Typical Application
L1
4.7µ H
SW
VIN
D1
C2
1 µF
Enable /
Disable
PWM
Dimming
C4
330 nF
EN
TPS61162D
PWM
COMP
IFB1
IFB2
GND
ISET
R1
63.4 k
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.