TPS61087-Q1_16 Datasheet, PDF (1/30 Pages) Texas Instruments – TPS61087-Q1 650-kHz or 1.2-MHz, 18.5-V Step-Up DC-DC Converter With 3.2-A Switch

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TPS61087-Q1
SLVSB50B – DECEMBER 2011 – REVISED JUNE 2016
TPS61087-Q1 650-kHz or 1.2-MHz, 18.5-V Step-Up DC-DC Converter With 3.2-A Switch
1 Features
•1 Qualified for Automotive Applications
• 2.5-V to 6-V Input Voltage Range
• 18.5-V Boost Converter With 3.2-A Switch Current
• 650-kHz or 1.2-MHz Selectable Switching
Frequency
• Adjustable Soft Start
• Thermal Shutdown
• Undervoltage Lockout
• 10-Pin VQFN Package with Wettable Flanks
2 Applications
• Automotive Infotainment Clusters
– Instrument Clusters, Head Units
– Radio, Navigation
– Audio Amplifiers
• Automotive Body Electronics
– Body Control Modules
– Gateway
• Telemetrics and eCall
• Advanced Driver Assistance System (ADAS)
3 Description
The TPS61087-Q1 is a high-frequency, high-
efficiency DC-to-DC converter with an integrated
3.2‑A, 0.13-Ω power switch capable of providing an
output voltage up to 18.5 V. The selectable frequency
of 650 kHz or 1.2 MHz allows the use of small
external inductors and capacitors, and provides fast
transient response. The external compensation
allows optimizing the application for specific
conditions. A capacitor connected to the soft-start pin
minimizes inrush current at start-up.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS61087-Q1
VSON (10)
3.00 mm x 3.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Schematic
L
3.3 mH
V_IN
2.5 V to 6 V
Cin
2* 10 mF
16 V
Cby
1 mF
16 V
8
IN
3 _EN
SW ⁶
7
SW
9 _FREQ
4 _AGND
5 _PGND
2
FB
COMP ¹
SS ¹⁰
TPS61087-Q1
D
SL22
R1
200 kW
Css
100 nF
Rcomp
100 kW
Ccomp
820 pF
R2
18 kW
V_S
15 V/500 mA
Cout
4* 10 mF
25 V
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.