TPS65632_16 Datasheet, PDF (1/28 Pages) Texas Instruments – Triple-Output AMOLED Display Power Supply

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TPS65632
SLVSCY2A – MARCH 2015 – REVISED JANUARY 2016
TPS65632 Triple-Output AMOLED Display Power Supply
1 Features
•1 2.9-V to 4.5-V Input Voltage Range
• Boost Converter 1 (V_POS)
– 4.6-V Output Voltage
– 0.5% Accuracy (25°C to 85°C )
– Dedicated Output Sense Pin
– 300-mA Output Current
• Inverting Buck-Boost Converter (V_NEG)
– –1.5-V to –5.4-V Programmable Output
Voltage
– –4-V Default Output Voltage
– 300-mA Output Current
• Boost Converter 2 (AV_DD)
– 5.8-V or 7.7-V Output Voltage
– 30-mA Output Current
• Excellent Line Transient Regulation
• Short-Circuit Protection
• Thermal Shutdown
• 3-mm × 3-mm, 16-Pin WQFN Package
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Simplified Schematic
L1
4.7 µH
VI
2.9 V to 4.5 V
C1
3×10 µF
Enable AVDD
Enable / Program VNEG
AVDD
7.7 V / 30 mA
C6
10 µF
C5
100 nF
L2
10 µH
PVIN
AVIN
SWP1
OUTP1
FBS
TPS65632
SWP2
EN
CTRL
OUTP2
SELP2
AGND
PGND1
PGND2
OUTN
SWN
CT
C2
10 µF
VPOS
4.6 V / 300 mA
VNEG
±4.0 V / 300 mA
C3
2×10 µF
L3
4.7 µH
C4
100 nF
2 Applications
AMOLED Displays
3 Description
The TPS65632 is designed to drive AMOLED
displays (Active Matrix Organic Light Emitting Diode)
requiring three supply rails, V_POS, V_NEG and AV_DD.
The device integrates a boost converter for V_POS, an
inverting buck-boost converter for V_NEG, and a boost
converter for AV_DD, all of which are suitable for
battery operated products. The digital control pin
(CTRL) allows programming the negative output
voltage in digital steps. The TPS65632 uses a novel
technology enabling excellent line and load
regulation.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS65632
WQFN (16)
3.00 mm × 3.00 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Efficiency vs Output Current
100
90
80
70
60
50
40
30
20
10
0
1m
AV_DD
V_POS & V_NEG
V_POS = 4.6 V, V_NEG = –4.0 V, AV_DD = 7.7 V
10m
Output Current (A)
100m
300m
G000
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.