TPS65137AS Datasheet, PDF (1/20 Pages) Texas Instruments – 250mA Dual Outputs AMOLED Display Power Supply

TPS65137AS
www.ti.com
SLVSB21B – AUGUST 2011 – REVISED SEPTEMBER 2013
250mA Dual Outputs AMOLED Display Power Supply
Check for Samples: TPS65137AS
FEATURES
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• 2.5 V to 4.8 V Input Voltage Range
• 0.8% Output Voltage Accuracy V_POS
• Excellent Line Transient Regulation
• 250 mA Output Current
• Fixed 4.6 V V_POS Output Voltage
• Digitally Programmable V_NEG, –2.2V to –5.2V
• –4.9V Default Value for V_NEG
• Short Circuit Protection
• Thermal Shutdown
• 3mm × 3mm 10-Pin QFN Package
DESCRIPTION
The TPS65137AS is designed to drive AMOLED
displays (Active Matrix Organic Light Emitting Diode)
requiring positive and negative voltage supply rails.
The device integrates a boost converter with LDO
post regulator and an inverting buckboost converter
suitable for battery operated products. The digital
control pin (CTRL) allows programming the negative
output voltage in digital steps. The TPS65137AS
uses a novel technology enabling excellent line and
load regulation. This is required to avoid disturbance
of the AMOLED display by the input voltage
disturbances occurring during transmit periods in
mobile phones.
APPLICATIONS
• Active Matrix OLED
TYPICAL APPLICATION
V_IN
2.5V to 4.8V
C1
4.72F
EN and
Program V_NEG
C4
100nF
L1
4.7uH
VIN ^TPS65137AS SWP
PGND
OUTP
CTRL
OUTN
CT
GND
CB
SWN
L2
4.72H
C5
4.72F
V_POS
4.6V/250mA
C2
4.72F
V_NEG
-4.9V/250mA
C3
4.72F
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Texas 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.
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