TPS561201 Datasheet, PDF (1/25 Pages) Texas Instruments – 4.5-V to 17-V Input, 1-A Synchronous Step-Down Voltage Regulator in 6-Pin SOT-23

Product
Folder
Order
Now
Technical
Documents
Tools &
Software
Support &
Community
TPS561201, TPS561208
SLVSC95 – APRIL 2017
TPS56120x 4.5-V to 17-V Input, 1-A Synchronous Step-Down Voltage Regulator in 6-Pin
SOT-23
1 Features
•1 TPS561201 and TPS561208 1-A Converter
Integrated 140-mΩ and 84-mΩ FETs
• D-CAP2™ Mode Control With Fast Transient
Response
• Input Voltage Range: 4.5 V to 17 V
• Output Voltage Range: 0.76 V to 7 V
• Pulse-Skip Mode (TPS561201) or Continuous
Current Mode (TPS561208)
• 580-kHz Switching Frequency
• Low Shutdown Current Less than 10 µA
• 2% Feedback Voltage Accuracy (25°C)
• Startup from Pre-Biased Output Voltage
• Cycle-by-Cycle Overcurrent Limit
• Hiccup-Mode Overcurrent Protection
• Non-Latch UVP and TSD Protections
• Fixed Soft-Start: 1.0 ms
• Create a Custom Design Using the TPS56120x
With the WEBENCH^® Power Designer
2 Applications
• Digital TV Power Supply
• High Definition Blu-ray™ Disc Players
• Networking Home Terminal
• Digital Set-Top Box (STB)
• Surveillance
3 Description
The TPS561201 and TPS561208 are simple, easy-to-
use, 1-A synchronous step-down converters in SOT-
23 package.
The devices are optimized to operate with minimum
external component counts and also optimized to
achieve low standby current.
These switch mode power supply (SMPS) devices
employ D-CAP2 mode control providing a fast
transient response and supporting both low
equivalent series resistance (ESR) output capacitors
such as specialty polymer and ultra-low ESR ceramic
capacitors with no external compensation
components.
The TPS561201 operates in pulse skip mode, which
maintains high efficiency during light load operation.
The TPS561201 and TPS561208 are available in a 6-
pin 1.6 × 2.9 (mm) SOT (DDC) package and
specified from –40°C to 125°C of junction
temperature.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS561201
TPS561208
SOT (6)
1.60 mm × 2.90 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Schematic
VOUT
COUT
TPS561201
1
GND
6
VBST
2 _SW
5
EN
VIN
3 _VIN
4
VFB
CIN
EN
VOUT
Copyright © 2017, Texas Instruments Incorporated
100%
90%
80%
70%
60%
50%
40%
30%
20%
10%
0
0.001
TPS561201 Efficiency
0.01
0.1
Output Current (A)
Vout = 1.05 V
Vout = 1.5 V
Vout = 3.3 V
Vout = 5 V
1
D001
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.