TPS84259_14 Datasheet, PDF (1/32 Pages) Texas Instruments – 4.5-V to 40-V Input, 15-W, Negative Output, Integrated Power Solution

TPS84259
www.ti.com
SLVSBA0B – AUGUST 2012 – REVISED SEPT 2013
4.5-V to 40-V Input, 15-W, Negative Output, Integrated Power Solution
Check for Samples: TPS84259
FEATURES
1
• Complete Integrated Power Solution Allows
Small Footprint, Low-Profile Design
• Wide Input Voltage Range from 4.5 V to 40 V
• Output Adjustable from –3.0 V to –17 V
• Supplies up to 2-A of Output Current
• 45-V Surge Capability
• Synchronizes to an External Clock
• Adjustable Slow-Start
• Programmable Undervoltage Lockout (UVLO)
• Output Overcurrent Protection
• Over Temperature Protection
• Operating Temperature Range: –40°C to 85°C
• Enhanced Thermal Performance: 14°C/W
• Meets EN55022 Class B Emissions
• For Design Help visit
http://www.ti.com/TPS84259
APPLICATIONS
• Industrial and Motor Controls
• Automated Test Equipment
• Bipolar Amplifiers in Audio/Video
• High Density Power Systems
DESCRIPTION
The TPS84259 is an easy-to-use negative output
voltage power module that combines a 15-W DC/DC
converter with an inductor, and passives into a low
profile, QFN package. This total power solution allows
as few as five external components and eliminates
the loop compensation and magnetics part selection
process.
The 9x11x2.8 mm QFN package is easy to solder
onto a printed circuit board. Its compact design also
contains fewer components and possesses excellent
power dissipation capability. The TPS84259 offers
the flexibility and the feature-set of a discrete design
and is ideal for powering a wide range of ICs and
analog circuits requiring a negative output voltage.
Advanced packaging technology affords a robust and
reliable power solution, compatible with standard
QFN mounting and testing techniques.
Figure 2. SIMPLIFIED APPLICATION
V_IN
C_IN
TPS84259
VIN
VOUT
VOUT_PT
A_VOUT
INH/UVLO
RT
-V_OUT
C_OUT
Figure 1. Safe Operating Current
CLK
STSEL
2.2
2
1.8
1.6
1.4
1.2
1
0.8
0.6
0.4
0.2
0
5
V_O = –3.3 V
V_O = –5 V
V_O = –12 V
V_O = –15 V
10
15
20
25
30
35
40
Input Voltage (V)
G000
SS
VADJ
GND
R_SET
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.
ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more
susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
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.
Copyright © 2012–2013, Texas Instruments Incorporated