TPS54352-EP Datasheet, PDF (1/35 Pages) Texas Instruments – 4.5-V TO 20-V INPUT, 3-A OUTPUT SYNCHRONOUS PWM SWITCHES

TPS54352-EP, TPS54353-EP, TPS54354-EP
TPS54355-EP, TPS54356-EP, TPS54357-EP
www.ti.com ....................................................................................................................................................... SLVS684A – JANUARY 2007 – REVISED JULY 2009
4.5-V TO 20-V INPUT, 3-A OUTPUT SYNCHRONOUS PWM SWITCHES
WITH INTEGRATED FET (SWIFT™)
FEATURES
1
•2 100-mΩ, 4.5-A Peak MOSFET Switch for High
Efficiency at 3-A Continuous Output Current
• Use External Low-Side MOSFET or Diode
• Fixed-Output Versions – 1.2 V/1.5 V/1.8 V/
2.5 V/3.3 V/5 V
• Internally Compensated for Low Parts Count
• Synchronize to External Clock
• 180° Out-of-Phase Synchronization
• Wide Pulse Width Modulation (PWM)
Frequency – Fixed 250 kHz,
500 kHz, or Adjustable 250 kHz to 700 kHz
• Internal Slow Start
• Load Protected by Peak Current Limit and
Thermal Shutdown
• Adjustable Undervoltage Lockout
• 16-Pin PowerPAD™ Thin Shrink Small-Outline
Package (TSSOP) (PWP)
APPLICATIONS
• Industrial and Commercial Low-Power
Systems
• LCD Monitors and TVs
• Computer Peripherals
• Point-of-Load Regulation for High
Performance DSPs, FPGAs, ASICs, and
Microprocessors
SUPPORTS DEFENSE, AEROSPACE,
AND MEDICAL APPLICATIONS
• Controlled Baseline
• One Assembly/Test Site
• One Fabrication Site
• Available in Military (–55°C/125°C)
Temperature Range⁽¹⁾
• Extended Product Life Cycle
• Extended Product-Change Notification
• Product Traceability
(1) Additional temperature ranges are available - contact factory
SIMPLIFIED SCHEMATIC
TPS54356
SYNC
VIN
PWRGD
ENA
BIAS
BOOT
PH
Input
Voltage
LSG
PGND
VSENSE
PWRPAD
Output
Voltage
100
95
90
85
80
75
70
65
60
55
50
0
EFFICIENCY
vs
OUTPUT CURRENT
V_I = 6 V
V_I = 12 V
V_I= 12 V
V_O= 3.3 V
f_s = 500 kHz
1
2
3
4
I_O − Output Current − A
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.
SWIFT, PowerPAD are trademarks of Texas Instruments.
2
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 © 2007–2009, Texas Instruments Incorporated