TPS61093 Datasheet, PDF (1/20 Pages) Texas Instruments – LOW INPUT BOOST CONVERTER WITH INTEGRATED POWER DIODE AND INPUT/OUTPUT ISOLATION

TPS61093
www.ti.com.......................................................................................................................................................................................... SLVS992 – SEPTEMBER 2009
LOW INPUT BOOST CONVERTER WITH INTEGRATED POWER DIODE AND
INPUT/OUTPUT ISOLATION
FEATURES
1
• Input Range: 1.6-V to 6-V
• Integrated Power Diode and Isolation FET
• 20-V Internal Switch FET With 1.1-A Current
• Fixed 1.2-MHz Switching Frequency
• Efficiency at 15-V Output up to 88%
• Over Load and Over Voltage Protection
• Programmable Soft Start-up
• Load Discharge Path After IC Shutdown
• 2.5 × 2.5 × 0.8 mm SON Package
APPLICATIONS
• Glucose Meter
• OLED Power Supply
• 3.3-V to 12-V, 5-V to 12-V Boost Converter
DESCRIPTION
The TPS61093 is a 1.2-MHz, fixed-frequency boost
converter designed for high integration and high
reliability. The IC integrates a 20-V power switch,
input/output isolation switch, and power diode. When
the output current exceeds the over load limit, the
IC’s isolation switch opens up to disconnect the
output from the input. This protects the IC and the
input supply. The isolation switch also disconnects
the output from the input during shutdown to minimize
leakage current. When the IC is shutdown, the output
capacitor is discharged to a low voltage level by
internal diodes. Other protection features include
1.1-A peak over-current protection (OCP) at each
cycle, output over voltage protection (OVP), thermal
shutdown, and under voltage lockout (UVLO).
With its 1.6-V minimum input voltage, the IC can be
powered by two alkaline batteries, a single Li-ion
battery, or 3.3-V and 5-V regulated supply. The
output can be boosted up to 17-V. The TPS61093 is
available in 2.5 mm × 2.5 mm SON package with
thermal pad.
V_I 1.6 V to 6 V
L1
C1
4.7 mF
C3 100 nF
10 mH
TPS61093
VIN
CP1
CP2
EN
SS
SW
VO
OUT
FB
GND
C2 0.1 mF
V_O 15 V/50 mA
R1
294 kW
C4
1 mF
R3
200 kW
C5
1 mF
R2
10.2 kW
Figure 1. Typical Application
T_A
–40°C to 85°C
ORDERING INFORMATION⁽¹⁾
PART NUMBER⁽²⁾
TPS61093DSK
PACKAGE MARKING
OAP
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
web site at www.ti.com
(2) The DSK package is available in tape and reel. Add R suffix (TPS61093DSKR) to order quantities of 3000 parts per reel, or add T suffix
(TPS61093DSKT) to order 250 parts per reel.
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 © 2009, Texas Instruments Incorporated